lib/uglify.js in uglifier-4.1.6 vs lib/uglify.js in uglifier-4.1.7
- old
+ new
@@ -212,11 +212,11 @@
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
***********************************************************************/
-"use strict";function SymbolDef(scope,orig,init){this.name=orig.name;this.orig=[orig];this.init=init;this.eliminated=0;this.scope=scope;this.references=[];this.replaced=0;this.global=false;this.mangled_name=null;this.undeclared=false;this.id=SymbolDef.next_id++}SymbolDef.next_id=1;SymbolDef.prototype={unmangleable:function(options){if(!options)options={};return this.global&&!options.toplevel||this.undeclared||!options.eval&&(this.scope.uses_eval||this.scope.uses_with)||options.keep_fnames&&(this.orig[0]instanceof AST_SymbolLambda||this.orig[0]instanceof AST_SymbolDefun)},mangle:function(options){var cache=options.cache&&options.cache.props;if(this.global&&cache&&cache.has(this.name)){this.mangled_name=cache.get(this.name)}else if(!this.mangled_name&&!this.unmangleable(options)){var s=this.scope;var sym=this.orig[0];if(options.ie8&&sym instanceof AST_SymbolLambda)s=s.parent_scope;var def;if(def=this.redefined()){this.mangled_name=def.mangled_name||def.name}else this.mangled_name=s.next_mangled(options,this);if(this.global&&cache){cache.set(this.name,this.mangled_name)}}},redefined:function(){return this.defun&&this.defun.variables.get(this.name)}};AST_Toplevel.DEFMETHOD("figure_out_scope",function(options){options=defaults(options,{cache:null,ie8:false});var self=this;var scope=self.parent_scope=null;var labels=new Dictionary;var defun=null;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_Catch){var save_scope=scope;scope=new AST_Scope(node);scope.init_scope_vars(save_scope);descend();scope=save_scope;return true}if(node instanceof AST_Scope){node.init_scope_vars(scope);var save_scope=scope;var save_defun=defun;var save_labels=labels;defun=scope=node;labels=new Dictionary;descend();scope=save_scope;defun=save_defun;labels=save_labels;return true}if(node instanceof AST_LabeledStatement){var l=node.label;if(labels.has(l.name)){throw new Error(string_template("Label {name} defined twice",l))}labels.set(l.name,l);descend();labels.del(l.name);return true}if(node instanceof AST_With){for(var s=scope;s;s=s.parent_scope)s.uses_with=true;return}if(node instanceof AST_Symbol){node.scope=scope}if(node instanceof AST_Label){node.thedef=node;node.references=[]}if(node instanceof AST_SymbolLambda){defun.def_function(node,node.name=="arguments"?undefined:defun)}else if(node instanceof AST_SymbolDefun){(node.scope=defun.parent_scope).def_function(node,defun)}else if(node instanceof AST_SymbolVar){defun.def_variable(node,node.TYPE=="SymbolVar"?null:undefined);if(defun!==scope){node.mark_enclosed(options);var def=scope.find_variable(node);if(node.thedef!==def){node.thedef=def;node.reference(options)}}}else if(node instanceof AST_SymbolCatch){scope.def_variable(node).defun=defun}else if(node instanceof AST_LabelRef){var sym=labels.get(node.name);if(!sym)throw new Error(string_template("Undefined label {name} [{line},{col}]",{name:node.name,line:node.start.line,col:node.start.col}));node.thedef=sym}});self.walk(tw);self.globals=new Dictionary;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_LoopControl&&node.label){node.label.thedef.references.push(node);return true}if(node instanceof AST_SymbolRef){var name=node.name;if(name=="eval"&&tw.parent()instanceof AST_Call){for(var s=node.scope;s&&!s.uses_eval;s=s.parent_scope){s.uses_eval=true}}var sym=node.scope.find_variable(name);if(!sym){sym=self.def_global(node)}else if(sym.scope instanceof AST_Lambda&&name=="arguments"){sym.scope.uses_arguments=true}node.thedef=sym;node.reference(options);return true}var def;if(node instanceof AST_SymbolCatch&&(def=node.definition().redefined())){var s=node.scope;while(s){push_uniq(s.enclosed,def);if(s===def.scope)break;s=s.parent_scope}}});self.walk(tw);if(options.ie8){self.walk(new TreeWalker(function(node,descend){if(node instanceof AST_SymbolCatch){var name=node.name;var refs=node.thedef.references;var scope=node.thedef.defun;var def=scope.find_variable(name)||self.globals.get(name)||scope.def_variable(node);refs.forEach(function(ref){ref.thedef=def;ref.reference(options)});node.thedef=def;node.reference(options);return true}}))}});AST_Toplevel.DEFMETHOD("def_global",function(node){var globals=this.globals,name=node.name;if(globals.has(name)){return globals.get(name)}else{var g=new SymbolDef(this,node);g.undeclared=true;g.global=true;globals.set(name,g);return g}});AST_Scope.DEFMETHOD("init_scope_vars",function(parent_scope){this.variables=new Dictionary;this.functions=new Dictionary;this.uses_with=false;this.uses_eval=false;this.parent_scope=parent_scope;this.enclosed=[];this.cname=-1});AST_Lambda.DEFMETHOD("init_scope_vars",function(){AST_Scope.prototype.init_scope_vars.apply(this,arguments);this.uses_arguments=false;this.def_variable(new AST_SymbolFunarg({name:"arguments",start:this.start,end:this.end}))});AST_Symbol.DEFMETHOD("mark_enclosed",function(options){var def=this.definition();var s=this.scope;while(s){push_uniq(s.enclosed,def);if(options.keep_fnames){s.functions.each(function(d){push_uniq(def.scope.enclosed,d)})}if(s===def.scope)break;s=s.parent_scope}});AST_Symbol.DEFMETHOD("reference",function(options){this.definition().references.push(this);this.mark_enclosed(options)});AST_Scope.DEFMETHOD("find_variable",function(name){if(name instanceof AST_Symbol)name=name.name;return this.variables.get(name)||this.parent_scope&&this.parent_scope.find_variable(name)});AST_Scope.DEFMETHOD("def_function",function(symbol,init){var def=this.def_variable(symbol,init);if(!def.init||def.init instanceof AST_Defun)def.init=init;this.functions.set(symbol.name,def);return def});AST_Scope.DEFMETHOD("def_variable",function(symbol,init){var def=this.variables.get(symbol.name);if(def){def.orig.push(symbol);if(def.init&&(def.scope!==symbol.scope||def.init instanceof AST_Function)){def.init=init}}else{def=new SymbolDef(this,symbol,init);this.variables.set(symbol.name,def);def.global=!this.parent_scope}return symbol.thedef=def});function next_mangled(scope,options){var ext=scope.enclosed;out:while(true){var m=base54(++scope.cname);if(!is_identifier(m))continue;if(member(m,options.reserved))continue;for(var i=ext.length;--i>=0;){var sym=ext[i];var name=sym.mangled_name||sym.unmangleable(options)&&sym.name;if(m==name)continue out}return m}}AST_Scope.DEFMETHOD("next_mangled",function(options){return next_mangled(this,options)});AST_Toplevel.DEFMETHOD("next_mangled",function(options){var name;do{name=next_mangled(this,options)}while(member(name,this.mangled_names));return name});AST_Function.DEFMETHOD("next_mangled",function(options,def){var tricky_def=def.orig[0]instanceof AST_SymbolFunarg&&this.name&&this.name.definition();var tricky_name=tricky_def?tricky_def.mangled_name||tricky_def.name:null;while(true){var name=next_mangled(this,options);if(!tricky_name||tricky_name!=name)return name}});AST_Symbol.DEFMETHOD("unmangleable",function(options){var def=this.definition();return!def||def.unmangleable(options)});AST_Label.DEFMETHOD("unmangleable",return_false);AST_Symbol.DEFMETHOD("unreferenced",function(){return this.definition().references.length==0&&!(this.scope.uses_eval||this.scope.uses_with)});AST_Symbol.DEFMETHOD("definition",function(){return this.thedef});AST_Symbol.DEFMETHOD("global",function(){return this.definition().global});AST_Toplevel.DEFMETHOD("_default_mangler_options",function(options){options=defaults(options,{eval:false,ie8:false,keep_fnames:false,reserved:[],toplevel:false});if(!Array.isArray(options.reserved))options.reserved=[];push_uniq(options.reserved,"arguments");return options});AST_Toplevel.DEFMETHOD("mangle_names",function(options){options=this._default_mangler_options(options);var lname=-1;var to_mangle=[];var mangled_names=this.mangled_names=[];if(options.cache){this.globals.each(collect);if(options.cache.props){options.cache.props.each(function(mangled_name){push_uniq(mangled_names,mangled_name)})}}var tw=new TreeWalker(function(node,descend){if(node instanceof AST_LabeledStatement){var save_nesting=lname;descend();lname=save_nesting;return true}if(node instanceof AST_Scope){node.variables.each(collect);return}if(node instanceof AST_Label){var name;do{name=base54(++lname)}while(!is_identifier(name));node.mangled_name=name;return true}if(!options.ie8&&node instanceof AST_SymbolCatch){to_mangle.push(node.definition());return}});this.walk(tw);to_mangle.forEach(function(def){def.mangle(options)});function collect(symbol){if(!member(symbol.name,options.reserved)){to_mangle.push(symbol)}}});AST_Toplevel.DEFMETHOD("find_colliding_names",function(options){var cache=options.cache&&options.cache.props;var avoid=Object.create(null);options.reserved.forEach(to_avoid);this.globals.each(add_def);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(add_def);if(node instanceof AST_SymbolCatch)add_def(node.definition())}));return avoid;function to_avoid(name){avoid[name]=true}function add_def(def){var name=def.name;if(def.global&&cache&&cache.has(name))name=cache.get(name);else if(!def.unmangleable(options))return;to_avoid(name)}});AST_Toplevel.DEFMETHOD("expand_names",function(options){base54.reset();base54.sort();options=this._default_mangler_options(options);var avoid=this.find_colliding_names(options);var cname=0;this.globals.each(rename);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(rename);if(node instanceof AST_SymbolCatch)rename(node.definition())}));function next_name(){var name;do{name=base54(cname++)}while(avoid[name]||!is_identifier(name));return name}function rename(def){if(def.global&&options.cache)return;if(def.unmangleable(options))return;if(member(def.name,options.reserved))return;var d=def.redefined();def.name=d?d.name:next_name();def.orig.forEach(function(sym){sym.name=def.name});def.references.forEach(function(sym){sym.name=def.name})}});AST_Node.DEFMETHOD("tail_node",return_this);AST_Sequence.DEFMETHOD("tail_node",function(){return this.expressions[this.expressions.length-1]});AST_Toplevel.DEFMETHOD("compute_char_frequency",function(options){options=this._default_mangler_options(options);try{AST_Node.prototype.print=function(stream,force_parens){this._print(stream,force_parens);if(this instanceof AST_Symbol&&!this.unmangleable(options)){base54.consider(this.name,-1)}else if(options.properties){if(this instanceof AST_Dot){base54.consider(this.property,-1)}else if(this instanceof AST_Sub){skip_string(this.property)}}};base54.consider(this.print_to_string(),1)}finally{AST_Node.prototype.print=AST_Node.prototype._print}base54.sort();function skip_string(node){if(node instanceof AST_String){base54.consider(node.value,-1)}else if(node instanceof AST_Conditional){skip_string(node.consequent);skip_string(node.alternative)}else if(node instanceof AST_Sequence){skip_string(node.tail_node())}}});var base54=function(){var leading="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_".split("");var digits="0123456789".split("");var chars,frequency;function reset(){frequency=Object.create(null);leading.forEach(function(ch){frequency[ch]=0});digits.forEach(function(ch){frequency[ch]=0})}base54.consider=function(str,delta){for(var i=str.length;--i>=0;){frequency[str[i]]+=delta}};function compare(a,b){return frequency[b]-frequency[a]}base54.sort=function(){chars=mergeSort(leading,compare).concat(mergeSort(digits,compare))};base54.reset=reset;reset();function base54(num){var ret="",base=54;num++;do{num--;ret+=chars[num%base];num=Math.floor(num/base);base=64}while(num>0);return ret}return base54}();
+"use strict";function SymbolDef(scope,orig,init){this.name=orig.name;this.orig=[orig];this.init=init;this.eliminated=0;this.scope=scope;this.references=[];this.replaced=0;this.global=false;this.mangled_name=null;this.undeclared=false;this.id=SymbolDef.next_id++}SymbolDef.next_id=1;SymbolDef.prototype={unmangleable:function(options){if(!options)options={};return this.global&&!options.toplevel||this.undeclared||!options.eval&&(this.scope.uses_eval||this.scope.uses_with)||options.keep_fnames&&(this.orig[0]instanceof AST_SymbolLambda||this.orig[0]instanceof AST_SymbolDefun)},mangle:function(options){var cache=options.cache&&options.cache.props;if(this.global&&cache&&cache.has(this.name)){this.mangled_name=cache.get(this.name)}else if(!this.mangled_name&&!this.unmangleable(options)){var def;if(def=this.redefined()){this.mangled_name=def.mangled_name||def.name}else{this.mangled_name=next_mangled_name(this.scope,options,this)}if(this.global&&cache){cache.set(this.name,this.mangled_name)}}},redefined:function(){return this.defun&&this.defun.variables.get(this.name)}};AST_Toplevel.DEFMETHOD("figure_out_scope",function(options){options=defaults(options,{cache:null,ie8:false});var self=this;var scope=self.parent_scope=null;var labels=new Dictionary;var defun=null;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_Catch){var save_scope=scope;scope=new AST_Scope(node);scope.init_scope_vars(save_scope);descend();scope=save_scope;return true}if(node instanceof AST_Scope){node.init_scope_vars(scope);var save_scope=scope;var save_defun=defun;var save_labels=labels;defun=scope=node;labels=new Dictionary;descend();scope=save_scope;defun=save_defun;labels=save_labels;return true}if(node instanceof AST_LabeledStatement){var l=node.label;if(labels.has(l.name)){throw new Error(string_template("Label {name} defined twice",l))}labels.set(l.name,l);descend();labels.del(l.name);return true}if(node instanceof AST_With){for(var s=scope;s;s=s.parent_scope)s.uses_with=true;return}if(node instanceof AST_Symbol){node.scope=scope}if(node instanceof AST_Label){node.thedef=node;node.references=[]}if(node instanceof AST_SymbolLambda){defun.def_function(node,node.name=="arguments"?undefined:defun)}else if(node instanceof AST_SymbolDefun){(node.scope=defun.parent_scope).def_function(node,defun)}else if(node instanceof AST_SymbolVar){defun.def_variable(node,node.TYPE=="SymbolVar"?null:undefined);if(defun!==scope){node.mark_enclosed(options);var def=scope.find_variable(node);if(node.thedef!==def){node.thedef=def}node.reference(options)}}else if(node instanceof AST_SymbolCatch){scope.def_variable(node).defun=defun}else if(node instanceof AST_LabelRef){var sym=labels.get(node.name);if(!sym)throw new Error(string_template("Undefined label {name} [{line},{col}]",{name:node.name,line:node.start.line,col:node.start.col}));node.thedef=sym}});self.walk(tw);self.globals=new Dictionary;var tw=new TreeWalker(function(node,descend){if(node instanceof AST_LoopControl&&node.label){node.label.thedef.references.push(node);return true}if(node instanceof AST_SymbolRef){var name=node.name;if(name=="eval"&&tw.parent()instanceof AST_Call){for(var s=node.scope;s&&!s.uses_eval;s=s.parent_scope){s.uses_eval=true}}var sym=node.scope.find_variable(name);if(!sym){sym=self.def_global(node)}else if(sym.scope instanceof AST_Lambda&&name=="arguments"){sym.scope.uses_arguments=true}node.thedef=sym;node.reference(options);return true}var def;if(node instanceof AST_SymbolCatch&&(def=node.definition().redefined())){var s=node.scope;while(s){push_uniq(s.enclosed,def);if(s===def.scope)break;s=s.parent_scope}}});self.walk(tw);if(options.ie8){self.walk(new TreeWalker(function(node,descend){if(node instanceof AST_SymbolCatch){var name=node.name;var refs=node.thedef.references;var scope=node.thedef.defun;var def=scope.find_variable(name)||self.globals.get(name)||scope.def_variable(node);refs.forEach(function(ref){ref.thedef=def;ref.reference(options)});node.thedef=def;node.reference(options);return true}}))}});AST_Toplevel.DEFMETHOD("def_global",function(node){var globals=this.globals,name=node.name;if(globals.has(name)){return globals.get(name)}else{var g=new SymbolDef(this,node);g.undeclared=true;g.global=true;globals.set(name,g);return g}});AST_Scope.DEFMETHOD("init_scope_vars",function(parent_scope){this.variables=new Dictionary;this.functions=new Dictionary;this.uses_with=false;this.uses_eval=false;this.parent_scope=parent_scope;this.enclosed=[];this.cname=-1});AST_Lambda.DEFMETHOD("init_scope_vars",function(){AST_Scope.prototype.init_scope_vars.apply(this,arguments);this.uses_arguments=false;this.def_variable(new AST_SymbolFunarg({name:"arguments",start:this.start,end:this.end}))});AST_Symbol.DEFMETHOD("mark_enclosed",function(options){var def=this.definition();var s=this.scope;while(s){push_uniq(s.enclosed,def);if(options.keep_fnames){s.functions.each(function(d){push_uniq(def.scope.enclosed,d)})}if(s===def.scope)break;s=s.parent_scope}});AST_Symbol.DEFMETHOD("reference",function(options){this.definition().references.push(this);this.mark_enclosed(options)});AST_Scope.DEFMETHOD("find_variable",function(name){if(name instanceof AST_Symbol)name=name.name;return this.variables.get(name)||this.parent_scope&&this.parent_scope.find_variable(name)});AST_Scope.DEFMETHOD("def_function",function(symbol,init){var def=this.def_variable(symbol,init);if(!def.init||def.init instanceof AST_Defun)def.init=init;this.functions.set(symbol.name,def);return def});AST_Scope.DEFMETHOD("def_variable",function(symbol,init){var def=this.variables.get(symbol.name);if(def){def.orig.push(symbol);if(def.init&&(def.scope!==symbol.scope||def.init instanceof AST_Function)){def.init=init}}else{def=new SymbolDef(this,symbol,init);this.variables.set(symbol.name,def);def.global=!this.parent_scope}return symbol.thedef=def});function names_in_use(scope,options){var names=scope.names_in_use;if(!names){scope.names_in_use=names=Object.create(scope.mangled_names||null);scope.cname_holes=[];scope.enclosed.forEach(function(def){if(def.unmangleable(options))names[def.name]=true})}return names}function next_mangled_name(scope,options,def){var in_use=names_in_use(scope,options);var holes=scope.cname_holes;var names=Object.create(null);if(scope instanceof AST_Function&&scope.name&&def.orig[0]instanceof AST_SymbolFunarg){var tricky_def=scope.name.definition();names[tricky_def.mangled_name||tricky_def.name]=true}var scopes=[scope];def.references.forEach(function(sym){var scope=sym.scope;do{if(scopes.indexOf(scope)<0){for(var name in names_in_use(scope,options)){names[name]=true}scopes.push(scope)}else break}while(scope=scope.parent_scope)});var name;for(var i=0,len=holes.length;i<len;i++){name=base54(holes[i]);if(names[name])continue;holes.splice(i,1);scope.names_in_use[name]=true;return name}while(true){name=base54(++scope.cname);if(in_use[name]||!is_identifier(name)||member(name,options.reserved))continue;if(!names[name])break;holes.push(scope.cname)}scope.names_in_use[name]=true;if(options.ie8&&def.orig[0]instanceof AST_SymbolLambda){names_in_use(scope.parent_scope,options)[name]=true}return name}AST_Symbol.DEFMETHOD("unmangleable",function(options){var def=this.definition();return!def||def.unmangleable(options)});AST_Label.DEFMETHOD("unmangleable",return_false);AST_Symbol.DEFMETHOD("unreferenced",function(){return this.definition().references.length==0&&!(this.scope.uses_eval||this.scope.uses_with)});AST_Symbol.DEFMETHOD("definition",function(){return this.thedef});AST_Symbol.DEFMETHOD("global",function(){return this.definition().global});function _default_mangler_options(options){options=defaults(options,{eval:false,ie8:false,keep_fnames:false,reserved:[],toplevel:false});if(!Array.isArray(options.reserved))options.reserved=[];push_uniq(options.reserved,"arguments");return options}AST_Toplevel.DEFMETHOD("mangle_names",function(options){options=_default_mangler_options(options);var lname=-1;if(options.cache&&options.cache.props){var mangled_names=this.mangled_names=Object.create(null);options.cache.props.each(function(mangled_name){mangled_names[mangled_name]=true})}var redefined=[];var tw=new TreeWalker(function(node,descend){if(node instanceof AST_LabeledStatement){var save_nesting=lname;descend();lname=save_nesting;return true}if(node instanceof AST_Scope){descend();if(options.cache&&node instanceof AST_Toplevel){node.globals.each(mangle)}node.variables.each(mangle);return true}if(node instanceof AST_Label){var name;do{name=base54(++lname)}while(!is_identifier(name));node.mangled_name=name;return true}if(!options.ie8&&node instanceof AST_Catch){var def=node.argname.definition();var redef=def.redefined();if(redef){redefined.push(def);def.references.forEach(function(ref){ref.thedef=redef;ref.reference(options);ref.thedef=def})}descend();if(!redef)mangle(def);return true}});this.walk(tw);redefined.forEach(mangle);function mangle(def){if(!member(def.name,options.reserved)){def.mangle(options)}}});AST_Toplevel.DEFMETHOD("find_colliding_names",function(options){var cache=options.cache&&options.cache.props;var avoid=Object.create(null);options.reserved.forEach(to_avoid);this.globals.each(add_def);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(add_def);if(node instanceof AST_SymbolCatch)add_def(node.definition())}));return avoid;function to_avoid(name){avoid[name]=true}function add_def(def){var name=def.name;if(def.global&&cache&&cache.has(name))name=cache.get(name);else if(!def.unmangleable(options))return;to_avoid(name)}});AST_Toplevel.DEFMETHOD("expand_names",function(options){base54.reset();base54.sort();options=_default_mangler_options(options);var avoid=this.find_colliding_names(options);var cname=0;this.globals.each(rename);this.walk(new TreeWalker(function(node){if(node instanceof AST_Scope)node.variables.each(rename);if(node instanceof AST_SymbolCatch)rename(node.definition())}));function next_name(){var name;do{name=base54(cname++)}while(avoid[name]||!is_identifier(name));return name}function rename(def){if(def.global&&options.cache)return;if(def.unmangleable(options))return;if(member(def.name,options.reserved))return;var d=def.redefined();def.name=d?d.name:next_name();def.orig.forEach(function(sym){sym.name=def.name});def.references.forEach(function(sym){sym.name=def.name})}});AST_Node.DEFMETHOD("tail_node",return_this);AST_Sequence.DEFMETHOD("tail_node",function(){return this.expressions[this.expressions.length-1]});AST_Toplevel.DEFMETHOD("compute_char_frequency",function(options){options=_default_mangler_options(options);base54.reset();try{AST_Node.prototype.print=function(stream,force_parens){this._print(stream,force_parens);if(this instanceof AST_Symbol&&!this.unmangleable(options)){base54.consider(this.name,-1)}else if(options.properties){if(this instanceof AST_Dot){base54.consider(this.property,-1)}else if(this instanceof AST_Sub){skip_string(this.property)}}};base54.consider(this.print_to_string(),1)}finally{AST_Node.prototype.print=AST_Node.prototype._print}base54.sort();function skip_string(node){if(node instanceof AST_String){base54.consider(node.value,-1)}else if(node instanceof AST_Conditional){skip_string(node.consequent);skip_string(node.alternative)}else if(node instanceof AST_Sequence){skip_string(node.tail_node())}}});var base54=function(){var leading="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$_".split("");var digits="0123456789".split("");var chars,frequency;function reset(){frequency=Object.create(null);leading.forEach(function(ch){frequency[ch]=0});digits.forEach(function(ch){frequency[ch]=0})}base54.consider=function(str,delta){for(var i=str.length;--i>=0;){frequency[str[i]]+=delta}};function compare(a,b){return frequency[b]-frequency[a]}base54.sort=function(){chars=mergeSort(leading,compare).concat(mergeSort(digits,compare))};base54.reset=reset;reset();function base54(num){var ret="",base=54;num++;do{num--;ret+=chars[num%base];num=Math.floor(num/base);base=64}while(num>0);return ret}return base54}();
/***********************************************************************
A JavaScript tokenizer / parser / beautifier / compressor.
https://github.com/mishoo/UglifyJS2
@@ -255,11 +255,11 @@
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
***********************************************************************/
-"use strict";var EXPECT_DIRECTIVE=/^$|[;{][\s\n]*$/;function is_some_comments(comment){return comment.type=="comment2"&&/@preserve|@license|@cc_on/i.test(comment.value)}function OutputStream(options){var readonly=!options;options=defaults(options,{ascii_only:false,beautify:false,bracketize:false,comments:false,ie8:false,indent_level:4,indent_start:0,inline_script:true,keep_quoted_props:false,max_line_len:false,preamble:null,preserve_line:false,quote_keys:false,quote_style:0,semicolons:true,shebang:true,source_map:null,webkit:false,width:80,wrap_iife:false},true);var comment_filter=return_false;if(options.comments){var comments=options.comments;if(typeof options.comments==="string"&&/^\/.*\/[a-zA-Z]*$/.test(options.comments)){var regex_pos=options.comments.lastIndexOf("/");comments=new RegExp(options.comments.substr(1,regex_pos-1),options.comments.substr(regex_pos+1))}if(comments instanceof RegExp){comment_filter=function(comment){return comment.type!="comment5"&&comments.test(comment.value)}}else if(typeof comments==="function"){comment_filter=function(comment){return comment.type!="comment5"&&comments(this,comment)}}else if(comments==="some"){comment_filter=is_some_comments}else{comment_filter=return_true}}var indentation=0;var current_col=0;var current_line=1;var current_pos=0;var OUTPUT="";var to_utf8=options.ascii_only?function(str,identifier){return str.replace(/[\u0000-\u001f\u007f-\uffff]/g,function(ch){var code=ch.charCodeAt(0).toString(16);if(code.length<=2&&!identifier){while(code.length<2)code="0"+code;return"\\x"+code}else{while(code.length<4)code="0"+code;return"\\u"+code}})}:function(str){var s="";for(var i=0,len=str.length;i<len;i++){if(is_surrogate_pair_head(str[i])&&!is_surrogate_pair_tail(str[i+1])||is_surrogate_pair_tail(str[i])&&!is_surrogate_pair_head(str[i-1])){s+="\\u"+str.charCodeAt(i).toString(16)}else{s+=str[i]}}return s};function make_string(str,quote){var dq=0,sq=0;str=str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g,function(s,i){switch(s){case'"':++dq;return'"';case"'":++sq;return"'";case"\\":return"\\\\";case"\n":return"\\n";case"\r":return"\\r";case"\t":return"\\t";case"\b":return"\\b";case"\f":return"\\f";case"\v":return options.ie8?"\\x0B":"\\v";case"\u2028":return"\\u2028";case"\u2029":return"\\u2029";case"\ufeff":return"\\ufeff";case"\0":return/[0-9]/.test(str.charAt(i+1))?"\\x00":"\\0"}return s});function quote_single(){return"'"+str.replace(/\x27/g,"\\'")+"'"}function quote_double(){return'"'+str.replace(/\x22/g,'\\"')+'"'}str=to_utf8(str);switch(options.quote_style){case 1:return quote_single();case 2:return quote_double();case 3:return quote=="'"?quote_single():quote_double();default:return dq>sq?quote_single():quote_double()}}function encode_string(str,quote){var ret=make_string(str,quote);if(options.inline_script){ret=ret.replace(/<\x2fscript([>\/\t\n\f\r ])/gi,"<\\/script$1");ret=ret.replace(/\x3c!--/g,"\\x3c!--");ret=ret.replace(/--\x3e/g,"--\\x3e")}return ret}function make_name(name){name=name.toString();name=to_utf8(name,true);return name}function make_indent(back){return repeat_string(" ",options.indent_start+indentation-back*options.indent_level)}var might_need_space=false;var might_need_semicolon=false;var might_add_newline=0;var need_newline_indented=false;var need_space=false;var newline_insert=-1;var last="";var mapping_token,mapping_name,mappings=options.source_map&&[];var do_add_mapping=mappings?function(){mappings.forEach(function(mapping){try{options.source_map.add(mapping.token.file,mapping.line,mapping.col,mapping.token.line,mapping.token.col,!mapping.name&&mapping.token.type=="name"?mapping.token.value:mapping.name)}catch(ex){AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]",{file:mapping.token.file,line:mapping.token.line,col:mapping.token.col,cline:mapping.line,ccol:mapping.col,name:mapping.name||""})}});mappings=[]}:noop;var ensure_line_len=options.max_line_len?function(){if(current_col>options.max_line_len){if(might_add_newline){var left=OUTPUT.slice(0,might_add_newline);var right=OUTPUT.slice(might_add_newline);if(mappings){var delta=right.length-current_col;mappings.forEach(function(mapping){mapping.line++;mapping.col+=delta})}OUTPUT=left+"\n"+right;current_line++;current_pos++;current_col=right.length}if(current_col>options.max_line_len){AST_Node.warn("Output exceeds {max_line_len} characters",options)}}if(might_add_newline){might_add_newline=0;do_add_mapping()}}:noop;var requireSemicolonChars=makePredicate("( [ + * / - , .");function print(str){str=String(str);var ch=str.charAt(0);if(need_newline_indented&&ch){need_newline_indented=false;if(ch!="\n"){print("\n");indent()}}if(need_space&&ch){need_space=false;if(!/[\s;})]/.test(ch)){space()}}newline_insert=-1;var prev=last.charAt(last.length-1);if(might_need_semicolon){might_need_semicolon=false;if(prev==":"&&ch=="}"||(!ch||";}".indexOf(ch)<0)&&prev!=";"){if(options.semicolons||requireSemicolonChars(ch)){OUTPUT+=";";current_col++;current_pos++}else{ensure_line_len();OUTPUT+="\n";current_pos++;current_line++;current_col=0;if(/^\s+$/.test(str)){might_need_semicolon=true}}if(!options.beautify)might_need_space=false}}if(!options.beautify&&options.preserve_line&&stack[stack.length-1]){var target_line=stack[stack.length-1].start.line;while(current_line<target_line){ensure_line_len();OUTPUT+="\n";current_pos++;current_line++;current_col=0;might_need_space=false}}if(might_need_space){if(is_identifier_char(prev)&&(is_identifier_char(ch)||ch=="\\")||ch=="/"&&ch==prev||(ch=="+"||ch=="-")&&ch==last){OUTPUT+=" ";current_col++;current_pos++}might_need_space=false}if(mapping_token){mappings.push({token:mapping_token,name:mapping_name,line:current_line,col:current_col});mapping_token=false;if(!might_add_newline)do_add_mapping()}OUTPUT+=str;current_pos+=str.length;var a=str.split(/\r?\n/),n=a.length-1;current_line+=n;current_col+=a[0].length;if(n>0){ensure_line_len();current_col=a[n].length}last=str}var space=options.beautify?function(){print(" ")}:function(){might_need_space=true};var indent=options.beautify?function(half){if(options.beautify){print(make_indent(half?.5:0))}}:noop;var with_indent=options.beautify?function(col,cont){if(col===true)col=next_indent();var save_indentation=indentation;indentation=col;var ret=cont();indentation=save_indentation;return ret}:function(col,cont){return cont()};var newline=options.beautify?function(){if(newline_insert<0)return print("\n");if(OUTPUT[newline_insert]!="\n"){OUTPUT=OUTPUT.slice(0,newline_insert)+"\n"+OUTPUT.slice(newline_insert);current_pos++;current_line++}newline_insert++}:options.max_line_len?function(){ensure_line_len();might_add_newline=OUTPUT.length}:noop;var semicolon=options.beautify?function(){print(";")}:function(){might_need_semicolon=true};function force_semicolon(){might_need_semicolon=false;print(";")}function next_indent(){return indentation+options.indent_level}function with_block(cont){var ret;print("{");newline();with_indent(next_indent(),function(){ret=cont()});indent();print("}");return ret}function with_parens(cont){print("(");var ret=cont();print(")");return ret}function with_square(cont){print("[");var ret=cont();print("]");return ret}function comma(){print(",");space()}function colon(){print(":");space()}var add_mapping=mappings?function(token,name){mapping_token=token;mapping_name=name}:noop;function get(){if(might_add_newline){ensure_line_len()}return OUTPUT}function has_nlb(){var index=OUTPUT.lastIndexOf("\n");return/^ *$/.test(OUTPUT.slice(index+1))}function prepend_comments(node){var self=this;var start=node.start;if(!start)return;if(start.comments_before&&start.comments_before._dumped===self)return;var comments=start.comments_before;if(!comments){comments=start.comments_before=[]}comments._dumped=self;if(node instanceof AST_Exit&&node.value){var tw=new TreeWalker(function(node){var parent=tw.parent();if(parent instanceof AST_Exit||parent instanceof AST_Binary&&parent.left===node||parent.TYPE=="Call"&&parent.expression===node||parent instanceof AST_Conditional&&parent.condition===node||parent instanceof AST_Dot&&parent.expression===node||parent instanceof AST_Sequence&&parent.expressions[0]===node||parent instanceof AST_Sub&&parent.expression===node||parent instanceof AST_UnaryPostfix){var text=node.start.comments_before;if(text&&text._dumped!==self){text._dumped=self;comments=comments.concat(text)}}else{return true}});tw.push(node);node.value.walk(tw)}if(current_pos==0){if(comments.length>0&&options.shebang&&comments[0].type=="comment5"){print("#!"+comments.shift().value+"\n");indent()}var preamble=options.preamble;if(preamble){print(preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g,"\n"))}}comments=comments.filter(comment_filter,node);if(comments.length==0)return;var last_nlb=has_nlb();comments.forEach(function(c,i){if(!last_nlb){if(c.nlb){print("\n");indent();last_nlb=true}else if(i>0){space()}}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," ")+"\n");indent();last_nlb=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");last_nlb=false}});if(!last_nlb){if(start.nlb){print("\n");indent()}else{space()}}}function append_comments(node,tail){var self=this;var token=node.end;if(!token)return;var comments=token[tail?"comments_before":"comments_after"];if(!comments||comments._dumped===self)return;if(!(node instanceof AST_Statement||all(comments,function(c){return!/comment[134]/.test(c.type)})))return;comments._dumped=self;var insert=OUTPUT.length;comments.filter(comment_filter,node).forEach(function(c,i){need_space=false;if(need_newline_indented){print("\n");indent();need_newline_indented=false}else if(c.nlb&&(i>0||!has_nlb())){print("\n");indent()}else if(i>0||!tail){space()}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," "));need_newline_indented=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");need_space=true}});if(OUTPUT.length>insert)newline_insert=insert}var stack=[];return{get:get,toString:get,indent:indent,indentation:function(){return indentation},current_width:function(){return current_col-indentation},should_break:function(){return options.width&&this.current_width()>=options.width},newline:newline,print:print,space:space,comma:comma,colon:colon,last:function(){return last},semicolon:semicolon,force_semicolon:force_semicolon,to_utf8:to_utf8,print_name:function(name){print(make_name(name))},print_string:function(str,quote,escape_directive){var encoded=encode_string(str,quote);if(escape_directive===true&&encoded.indexOf("\\")===-1){if(!EXPECT_DIRECTIVE.test(OUTPUT)){force_semicolon()}force_semicolon()}print(encoded)},encode_string:encode_string,next_indent:next_indent,with_indent:with_indent,with_block:with_block,with_parens:with_parens,with_square:with_square,add_mapping:add_mapping,option:function(opt){return options[opt]},prepend_comments:readonly?noop:prepend_comments,append_comments:readonly||comment_filter===return_false?noop:append_comments,line:function(){return current_line},col:function(){return current_col},pos:function(){return current_pos},push_node:function(node){stack.push(node)},pop_node:function(){return stack.pop()},parent:function(n){return stack[stack.length-2-(n||0)]}}}(function(){function DEFPRINT(nodetype,generator){nodetype.DEFMETHOD("_codegen",generator)}var in_directive=false;var active_scope=null;var use_asm=null;AST_Node.DEFMETHOD("print",function(stream,force_parens){var self=this,generator=self._codegen;if(self instanceof AST_Scope){active_scope=self}else if(!use_asm&&self instanceof AST_Directive&&self.value=="use asm"){use_asm=active_scope}function doit(){stream.prepend_comments(self);self.add_source_map(stream);generator(self,stream);stream.append_comments(self)}stream.push_node(self);if(force_parens||self.needs_parens(stream)){stream.with_parens(doit)}else{doit()}stream.pop_node();if(self===use_asm){use_asm=null}});AST_Node.DEFMETHOD("_print",AST_Node.prototype.print);AST_Node.DEFMETHOD("print_to_string",function(options){var s=OutputStream(options);this.print(s);return s.get()});function PARENS(nodetype,func){if(Array.isArray(nodetype)){nodetype.forEach(function(nodetype){PARENS(nodetype,func)})}else{nodetype.DEFMETHOD("needs_parens",func)}}PARENS(AST_Node,return_false);PARENS(AST_Function,function(output){if(first_in_statement(output)){return true}if(output.option("webkit")){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this){return true}}if(output.option("wrap_iife")){var p=output.parent();return p instanceof AST_Call&&p.expression===this}return false});PARENS(AST_Object,first_in_statement);PARENS(AST_Unary,function(output){var p=output.parent();return p instanceof AST_PropAccess&&p.expression===this||p instanceof AST_Call&&p.expression===this});PARENS(AST_Sequence,function(output){var p=output.parent();return p instanceof AST_Call||p instanceof AST_Unary||p instanceof AST_Binary||p instanceof AST_VarDef||p instanceof AST_PropAccess||p instanceof AST_Array||p instanceof AST_ObjectProperty||p instanceof AST_Conditional});PARENS(AST_Binary,function(output){var p=output.parent();if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Unary)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true;if(p instanceof AST_Binary){var po=p.operator,pp=PRECEDENCE[po];var so=this.operator,sp=PRECEDENCE[so];if(pp>sp||pp==sp&&this===p.right){return true}}});PARENS(AST_PropAccess,function(output){var p=output.parent();if(p instanceof AST_New&&p.expression===this){var parens=false;this.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Call){parens=true;return true}}));return parens}});PARENS(AST_Call,function(output){var p=output.parent(),p1;if(p instanceof AST_New&&p.expression===this)return true;return this.expression instanceof AST_Function&&p instanceof AST_PropAccess&&p.expression===this&&(p1=output.parent(1))instanceof AST_Assign&&p1.left===p});PARENS(AST_New,function(output){var p=output.parent();if(!need_constructor_parens(this,output)&&(p instanceof AST_PropAccess||p instanceof AST_Call&&p.expression===this))return true});PARENS(AST_Number,function(output){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this){var value=this.getValue();if(value<0||/^0/.test(make_num(value))){return true}}});PARENS([AST_Assign,AST_Conditional],function(output){var p=output.parent();if(p instanceof AST_Unary)return true;if(p instanceof AST_Binary&&!(p instanceof AST_Assign))return true;if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Conditional&&p.condition===this)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true});DEFPRINT(AST_Directive,function(self,output){output.print_string(self.value,self.quote);output.semicolon()});DEFPRINT(AST_Debugger,function(self,output){output.print("debugger");output.semicolon()});function display_body(body,is_toplevel,output,allow_directives){var last=body.length-1;in_directive=allow_directives;body.forEach(function(stmt,i){if(in_directive===true&&!(stmt instanceof AST_Directive||stmt instanceof AST_EmptyStatement||stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String)){in_directive=false}if(!(stmt instanceof AST_EmptyStatement)){output.indent();stmt.print(output);if(!(i==last&&is_toplevel)){output.newline();if(is_toplevel)output.newline()}}if(in_directive===true&&stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String){in_directive=false}});in_directive=false}AST_StatementWithBody.DEFMETHOD("_do_print_body",function(output){force_statement(this.body,output)});DEFPRINT(AST_Statement,function(self,output){self.body.print(output);output.semicolon()});DEFPRINT(AST_Toplevel,function(self,output){display_body(self.body,true,output,true);output.print("")});DEFPRINT(AST_LabeledStatement,function(self,output){self.label.print(output);output.colon();self.body.print(output)});DEFPRINT(AST_SimpleStatement,function(self,output){self.body.print(output);output.semicolon()});function print_bracketed(self,output,allow_directives){if(self.body.length>0){output.with_block(function(){display_body(self.body,false,output,allow_directives)})}else{output.print("{");output.with_indent(output.next_indent(),function(){output.append_comments(self,true)});output.print("}")}}DEFPRINT(AST_BlockStatement,function(self,output){print_bracketed(self,output)});DEFPRINT(AST_EmptyStatement,function(self,output){output.semicolon()});DEFPRINT(AST_Do,function(self,output){output.print("do");output.space();make_block(self.body,output);output.space();output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.semicolon()});DEFPRINT(AST_While,function(self,output){output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_For,function(self,output){output.print("for");output.space();output.with_parens(function(){if(self.init){if(self.init instanceof AST_Definitions){self.init.print(output)}else{parenthesize_for_noin(self.init,output,true)}output.print(";");output.space()}else{output.print(";")}if(self.condition){self.condition.print(output);output.print(";");output.space()}else{output.print(";")}if(self.step){self.step.print(output)}});output.space();self._do_print_body(output)});DEFPRINT(AST_ForIn,function(self,output){output.print("for");output.space();output.with_parens(function(){self.init.print(output);output.space();output.print("in");output.space();self.object.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_With,function(self,output){output.print("with");output.space();output.with_parens(function(){self.expression.print(output)});output.space();self._do_print_body(output)});AST_Lambda.DEFMETHOD("_do_print",function(output,nokeyword){var self=this;if(!nokeyword){output.print("function")}if(self.name){output.space();self.name.print(output)}output.with_parens(function(){self.argnames.forEach(function(arg,i){if(i)output.comma();arg.print(output)})});output.space();print_bracketed(self,output,true)});DEFPRINT(AST_Lambda,function(self,output){self._do_print(output)});AST_Exit.DEFMETHOD("_do_print",function(output,kind){output.print(kind);if(this.value){output.space();this.value.print(output)}output.semicolon()});DEFPRINT(AST_Return,function(self,output){self._do_print(output,"return")});DEFPRINT(AST_Throw,function(self,output){self._do_print(output,"throw")});AST_LoopControl.DEFMETHOD("_do_print",function(output,kind){output.print(kind);if(this.label){output.space();this.label.print(output)}output.semicolon()});DEFPRINT(AST_Break,function(self,output){self._do_print(output,"break")});DEFPRINT(AST_Continue,function(self,output){self._do_print(output,"continue")});function make_then(self,output){var b=self.body;if(output.option("bracketize")||output.option("ie8")&&b instanceof AST_Do)return make_block(b,output);if(!b)return output.force_semicolon();while(true){if(b instanceof AST_If){if(!b.alternative){make_block(self.body,output);return}b=b.alternative}else if(b instanceof AST_StatementWithBody){b=b.body}else break}force_statement(self.body,output)}DEFPRINT(AST_If,function(self,output){output.print("if");output.space();output.with_parens(function(){self.condition.print(output)});output.space();if(self.alternative){make_then(self,output);output.space();output.print("else");output.space();if(self.alternative instanceof AST_If)self.alternative.print(output);else force_statement(self.alternative,output)}else{self._do_print_body(output)}});DEFPRINT(AST_Switch,function(self,output){output.print("switch");output.space();output.with_parens(function(){self.expression.print(output)});output.space();var last=self.body.length-1;if(last<0)output.print("{}");else output.with_block(function(){self.body.forEach(function(branch,i){output.indent(true);branch.print(output);if(i<last&&branch.body.length>0)output.newline()})})});AST_SwitchBranch.DEFMETHOD("_do_print_body",function(output){output.newline();this.body.forEach(function(stmt){output.indent();stmt.print(output);output.newline()})});DEFPRINT(AST_Default,function(self,output){output.print("default:");self._do_print_body(output)});DEFPRINT(AST_Case,function(self,output){output.print("case");output.space();self.expression.print(output);output.print(":");self._do_print_body(output)});DEFPRINT(AST_Try,function(self,output){output.print("try");output.space();print_bracketed(self,output);if(self.bcatch){output.space();self.bcatch.print(output)}if(self.bfinally){output.space();self.bfinally.print(output)}});DEFPRINT(AST_Catch,function(self,output){output.print("catch");output.space();output.with_parens(function(){self.argname.print(output)});output.space();print_bracketed(self,output)});DEFPRINT(AST_Finally,function(self,output){output.print("finally");output.space();print_bracketed(self,output)});AST_Definitions.DEFMETHOD("_do_print",function(output,kind){output.print(kind);output.space();this.definitions.forEach(function(def,i){if(i)output.comma();def.print(output)});var p=output.parent();var in_for=p instanceof AST_For||p instanceof AST_ForIn;var avoid_semicolon=in_for&&p.init===this;if(!avoid_semicolon)output.semicolon()});DEFPRINT(AST_Var,function(self,output){self._do_print(output,"var")});function parenthesize_for_noin(node,output,noin){var parens=false;if(noin)node.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){parens=true;return true}}));node.print(output,parens)}DEFPRINT(AST_VarDef,function(self,output){self.name.print(output);if(self.value){output.space();output.print("=");output.space();var p=output.parent(1);var noin=p instanceof AST_For||p instanceof AST_ForIn;parenthesize_for_noin(self.value,output,noin)}});DEFPRINT(AST_Call,function(self,output){self.expression.print(output);if(self instanceof AST_New&&!need_constructor_parens(self,output))return;if(self.expression instanceof AST_Call||self.expression instanceof AST_Lambda){output.add_mapping(self.start)}output.with_parens(function(){self.args.forEach(function(expr,i){if(i)output.comma();expr.print(output)})})});DEFPRINT(AST_New,function(self,output){output.print("new");output.space();AST_Call.prototype._codegen(self,output)});AST_Sequence.DEFMETHOD("_do_print",function(output){this.expressions.forEach(function(node,index){if(index>0){output.comma();if(output.should_break()){output.newline();output.indent()}}node.print(output)})});DEFPRINT(AST_Sequence,function(self,output){self._do_print(output)});DEFPRINT(AST_Dot,function(self,output){var expr=self.expression;expr.print(output);var prop=self.property;if(output.option("ie8")&&RESERVED_WORDS(prop)){output.print("[");output.add_mapping(self.end);output.print_string(prop);output.print("]")}else{if(expr instanceof AST_Number&&expr.getValue()>=0){if(!/[xa-f.)]/i.test(output.last())){output.print(".")}}output.print(".");output.add_mapping(self.end);output.print_name(prop)}});DEFPRINT(AST_Sub,function(self,output){self.expression.print(output);output.print("[");self.property.print(output);output.print("]")});DEFPRINT(AST_UnaryPrefix,function(self,output){var op=self.operator;output.print(op);if(/^[a-z]/i.test(op)||/[+-]$/.test(op)&&self.expression instanceof AST_UnaryPrefix&&/^[+-]/.test(self.expression.operator)){output.space()}self.expression.print(output)});DEFPRINT(AST_UnaryPostfix,function(self,output){self.expression.print(output);output.print(self.operator)});DEFPRINT(AST_Binary,function(self,output){var op=self.operator;self.left.print(output);if(op[0]==">"&&self.left instanceof AST_UnaryPostfix&&self.left.operator=="--"){output.print(" ")}else{output.space()}output.print(op);if((op=="<"||op=="<<")&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="!"&&self.right.expression instanceof AST_UnaryPrefix&&self.right.expression.operator=="--"){output.print(" ")}else{output.space()}self.right.print(output)});DEFPRINT(AST_Conditional,function(self,output){self.condition.print(output);output.space();output.print("?");output.space();self.consequent.print(output);output.space();output.colon();self.alternative.print(output)});DEFPRINT(AST_Array,function(self,output){output.with_square(function(){var a=self.elements,len=a.length;if(len>0)output.space();a.forEach(function(exp,i){if(i)output.comma();exp.print(output);if(i===len-1&&exp instanceof AST_Hole)output.comma()});if(len>0)output.space()})});DEFPRINT(AST_Object,function(self,output){if(self.properties.length>0)output.with_block(function(){self.properties.forEach(function(prop,i){if(i){output.print(",");output.newline()}output.indent();prop.print(output)});output.newline()});else output.print("{}")});function print_property_name(key,quote,output){if(output.option("quote_keys")){output.print_string(key)}else if(""+ +key==key&&key>=0){output.print(make_num(key))}else if(RESERVED_WORDS(key)?!output.option("ie8"):is_identifier_string(key)){if(quote&&output.option("keep_quoted_props")){output.print_string(key,quote)}else{output.print_name(key)}}else{output.print_string(key,quote)}}DEFPRINT(AST_ObjectKeyVal,function(self,output){print_property_name(self.key,self.quote,output);output.colon();self.value.print(output)});AST_ObjectProperty.DEFMETHOD("_print_getter_setter",function(type,output){output.print(type);output.space();print_property_name(this.key.name,this.quote,output);this.value._do_print(output,true)});DEFPRINT(AST_ObjectSetter,function(self,output){self._print_getter_setter("set",output)});DEFPRINT(AST_ObjectGetter,function(self,output){self._print_getter_setter("get",output)});DEFPRINT(AST_Symbol,function(self,output){var def=self.definition();output.print_name(def?def.mangled_name||def.name:self.name)});DEFPRINT(AST_Hole,noop);DEFPRINT(AST_This,function(self,output){output.print("this")});DEFPRINT(AST_Constant,function(self,output){output.print(self.getValue())});DEFPRINT(AST_String,function(self,output){output.print_string(self.getValue(),self.quote,in_directive)});DEFPRINT(AST_Number,function(self,output){if(use_asm&&self.start&&self.start.raw!=null){output.print(self.start.raw)}else{output.print(make_num(self.getValue()))}});DEFPRINT(AST_RegExp,function(self,output){var regexp=self.getValue();var str=regexp.toString();if(regexp.raw_source){str="/"+regexp.raw_source+str.slice(str.lastIndexOf("/"))}str=output.to_utf8(str);output.print(str);var p=output.parent();if(p instanceof AST_Binary&&/^in/.test(p.operator)&&p.left===self)output.print(" ")});function force_statement(stat,output){if(output.option("bracketize")){make_block(stat,output)}else{if(!stat||stat instanceof AST_EmptyStatement)output.force_semicolon();else stat.print(output)}}function need_constructor_parens(self,output){if(self.args.length>0)return true;return output.option("beautify")}function best_of(a){var best=a[0],len=best.length;for(var i=1;i<a.length;++i){if(a[i].length<len){best=a[i];len=best.length}}return best}function make_num(num){var str=num.toString(10),a=[str.replace(/^0\./,".").replace("e+","e")],m;if(Math.floor(num)===num){if(num>=0){a.push("0x"+num.toString(16).toLowerCase(),"0"+num.toString(8))}else{a.push("-0x"+(-num).toString(16).toLowerCase(),"-0"+(-num).toString(8))}if(m=/^(.*?)(0+)$/.exec(num)){a.push(m[1]+"e"+m[2].length)}}else if(m=/^0?\.(0+)(.*)$/.exec(num)){a.push(m[2]+"e-"+(m[1].length+m[2].length),str.substr(str.indexOf(".")))}return best_of(a)}function make_block(stmt,output){if(!stmt||stmt instanceof AST_EmptyStatement)output.print("{}");else if(stmt instanceof AST_BlockStatement)stmt.print(output);else output.with_block(function(){output.indent();stmt.print(output);output.newline()})}function DEFMAP(nodetype,generator){nodetype.DEFMETHOD("add_source_map",function(stream){generator(this,stream)})}DEFMAP(AST_Node,noop);function basic_sourcemap_gen(self,output){output.add_mapping(self.start)}DEFMAP(AST_Directive,basic_sourcemap_gen);DEFMAP(AST_Debugger,basic_sourcemap_gen);DEFMAP(AST_Symbol,basic_sourcemap_gen);DEFMAP(AST_Jump,basic_sourcemap_gen);DEFMAP(AST_StatementWithBody,basic_sourcemap_gen);DEFMAP(AST_LabeledStatement,noop);DEFMAP(AST_Lambda,basic_sourcemap_gen);DEFMAP(AST_Switch,basic_sourcemap_gen);DEFMAP(AST_SwitchBranch,basic_sourcemap_gen);DEFMAP(AST_BlockStatement,basic_sourcemap_gen);DEFMAP(AST_Toplevel,noop);DEFMAP(AST_New,basic_sourcemap_gen);DEFMAP(AST_Try,basic_sourcemap_gen);DEFMAP(AST_Catch,basic_sourcemap_gen);DEFMAP(AST_Finally,basic_sourcemap_gen);DEFMAP(AST_Definitions,basic_sourcemap_gen);DEFMAP(AST_Constant,basic_sourcemap_gen);DEFMAP(AST_ObjectSetter,function(self,output){output.add_mapping(self.start,self.key.name)});DEFMAP(AST_ObjectGetter,function(self,output){output.add_mapping(self.start,self.key.name)});DEFMAP(AST_ObjectProperty,function(self,output){output.add_mapping(self.start,self.key)})})();
+"use strict";var EXPECT_DIRECTIVE=/^$|[;{][\s\n]*$/;function is_some_comments(comment){return comment.type=="comment2"&&/@preserve|@license|@cc_on/i.test(comment.value)}function OutputStream(options){var readonly=!options;options=defaults(options,{ascii_only:false,beautify:false,bracketize:false,comments:false,ie8:false,indent_level:4,indent_start:0,inline_script:true,keep_quoted_props:false,max_line_len:false,preamble:null,preserve_line:false,quote_keys:false,quote_style:0,semicolons:true,shebang:true,source_map:null,webkit:false,width:80,wrap_iife:false},true);var comment_filter=return_false;if(options.comments){var comments=options.comments;if(typeof options.comments==="string"&&/^\/.*\/[a-zA-Z]*$/.test(options.comments)){var regex_pos=options.comments.lastIndexOf("/");comments=new RegExp(options.comments.substr(1,regex_pos-1),options.comments.substr(regex_pos+1))}if(comments instanceof RegExp){comment_filter=function(comment){return comment.type!="comment5"&&comments.test(comment.value)}}else if(typeof comments==="function"){comment_filter=function(comment){return comment.type!="comment5"&&comments(this,comment)}}else if(comments==="some"){comment_filter=is_some_comments}else{comment_filter=return_true}}var indentation=0;var current_col=0;var current_line=1;var current_pos=0;var OUTPUT="";var to_utf8=options.ascii_only?function(str,identifier){return str.replace(/[\u0000-\u001f\u007f-\uffff]/g,function(ch){var code=ch.charCodeAt(0).toString(16);if(code.length<=2&&!identifier){while(code.length<2)code="0"+code;return"\\x"+code}else{while(code.length<4)code="0"+code;return"\\u"+code}})}:function(str){var s="";for(var i=0,len=str.length;i<len;i++){if(is_surrogate_pair_head(str[i])&&!is_surrogate_pair_tail(str[i+1])||is_surrogate_pair_tail(str[i])&&!is_surrogate_pair_head(str[i-1])){s+="\\u"+str.charCodeAt(i).toString(16)}else{s+=str[i]}}return s};function make_string(str,quote){var dq=0,sq=0;str=str.replace(/[\\\b\f\n\r\v\t\x22\x27\u2028\u2029\0\ufeff]/g,function(s,i){switch(s){case'"':++dq;return'"';case"'":++sq;return"'";case"\\":return"\\\\";case"\n":return"\\n";case"\r":return"\\r";case"\t":return"\\t";case"\b":return"\\b";case"\f":return"\\f";case"\v":return options.ie8?"\\x0B":"\\v";case"\u2028":return"\\u2028";case"\u2029":return"\\u2029";case"\ufeff":return"\\ufeff";case"\0":return/[0-9]/.test(str.charAt(i+1))?"\\x00":"\\0"}return s});function quote_single(){return"'"+str.replace(/\x27/g,"\\'")+"'"}function quote_double(){return'"'+str.replace(/\x22/g,'\\"')+'"'}str=to_utf8(str);switch(options.quote_style){case 1:return quote_single();case 2:return quote_double();case 3:return quote=="'"?quote_single():quote_double();default:return dq>sq?quote_single():quote_double()}}function encode_string(str,quote){var ret=make_string(str,quote);if(options.inline_script){ret=ret.replace(/<\x2fscript([>\/\t\n\f\r ])/gi,"<\\/script$1");ret=ret.replace(/\x3c!--/g,"\\x3c!--");ret=ret.replace(/--\x3e/g,"--\\x3e")}return ret}function make_name(name){name=name.toString();name=to_utf8(name,true);return name}function make_indent(back){return repeat_string(" ",options.indent_start+indentation-back*options.indent_level)}var might_need_space=false;var might_need_semicolon=false;var might_add_newline=0;var need_newline_indented=false;var need_space=false;var newline_insert=-1;var last="";var mapping_token,mapping_name,mappings=options.source_map&&[];var do_add_mapping=mappings?function(){mappings.forEach(function(mapping){try{options.source_map.add(mapping.token.file,mapping.line,mapping.col,mapping.token.line,mapping.token.col,!mapping.name&&mapping.token.type=="name"?mapping.token.value:mapping.name)}catch(ex){AST_Node.warn("Couldn't figure out mapping for {file}:{line},{col} → {cline},{ccol} [{name}]",{file:mapping.token.file,line:mapping.token.line,col:mapping.token.col,cline:mapping.line,ccol:mapping.col,name:mapping.name||""})}});mappings=[]}:noop;var ensure_line_len=options.max_line_len?function(){if(current_col>options.max_line_len){if(might_add_newline){var left=OUTPUT.slice(0,might_add_newline);var right=OUTPUT.slice(might_add_newline);if(mappings){var delta=right.length-current_col;mappings.forEach(function(mapping){mapping.line++;mapping.col+=delta})}OUTPUT=left+"\n"+right;current_line++;current_pos++;current_col=right.length}if(current_col>options.max_line_len){AST_Node.warn("Output exceeds {max_line_len} characters",options)}}if(might_add_newline){might_add_newline=0;do_add_mapping()}}:noop;var requireSemicolonChars=makePredicate("( [ + * / - , .");function print(str){str=String(str);var ch=str.charAt(0);if(need_newline_indented&&ch){need_newline_indented=false;if(ch!="\n"){print("\n");indent()}}if(need_space&&ch){need_space=false;if(!/[\s;})]/.test(ch)){space()}}newline_insert=-1;var prev=last.charAt(last.length-1);if(might_need_semicolon){might_need_semicolon=false;if(prev==":"&&ch=="}"||(!ch||";}".indexOf(ch)<0)&&prev!=";"){if(options.semicolons||requireSemicolonChars(ch)){OUTPUT+=";";current_col++;current_pos++}else{ensure_line_len();OUTPUT+="\n";current_pos++;current_line++;current_col=0;if(/^\s+$/.test(str)){might_need_semicolon=true}}if(!options.beautify)might_need_space=false}}if(!options.beautify&&options.preserve_line&&stack[stack.length-1]){var target_line=stack[stack.length-1].start.line;while(current_line<target_line){ensure_line_len();OUTPUT+="\n";current_pos++;current_line++;current_col=0;might_need_space=false}}if(might_need_space){if(is_identifier_char(prev)&&(is_identifier_char(ch)||ch=="\\")||ch=="/"&&ch==prev||(ch=="+"||ch=="-")&&ch==last){OUTPUT+=" ";current_col++;current_pos++}might_need_space=false}if(mapping_token){mappings.push({token:mapping_token,name:mapping_name,line:current_line,col:current_col});mapping_token=false;if(!might_add_newline)do_add_mapping()}OUTPUT+=str;current_pos+=str.length;var a=str.split(/\r?\n/),n=a.length-1;current_line+=n;current_col+=a[0].length;if(n>0){ensure_line_len();current_col=a[n].length}last=str}var space=options.beautify?function(){print(" ")}:function(){might_need_space=true};var indent=options.beautify?function(half){if(options.beautify){print(make_indent(half?.5:0))}}:noop;var with_indent=options.beautify?function(col,cont){if(col===true)col=next_indent();var save_indentation=indentation;indentation=col;var ret=cont();indentation=save_indentation;return ret}:function(col,cont){return cont()};var newline=options.beautify?function(){if(newline_insert<0)return print("\n");if(OUTPUT[newline_insert]!="\n"){OUTPUT=OUTPUT.slice(0,newline_insert)+"\n"+OUTPUT.slice(newline_insert);current_pos++;current_line++}newline_insert++}:options.max_line_len?function(){ensure_line_len();might_add_newline=OUTPUT.length}:noop;var semicolon=options.beautify?function(){print(";")}:function(){might_need_semicolon=true};function force_semicolon(){might_need_semicolon=false;print(";")}function next_indent(){return indentation+options.indent_level}function with_block(cont){var ret;print("{");newline();with_indent(next_indent(),function(){ret=cont()});indent();print("}");return ret}function with_parens(cont){print("(");var ret=cont();print(")");return ret}function with_square(cont){print("[");var ret=cont();print("]");return ret}function comma(){print(",");space()}function colon(){print(":");space()}var add_mapping=mappings?function(token,name){mapping_token=token;mapping_name=name}:noop;function get(){if(might_add_newline){ensure_line_len()}return OUTPUT}function has_nlb(){var index=OUTPUT.lastIndexOf("\n");return/^ *$/.test(OUTPUT.slice(index+1))}function prepend_comments(node){var self=this;var start=node.start;if(!start)return;if(start.comments_before&&start.comments_before._dumped===self)return;var comments=start.comments_before;if(!comments){comments=start.comments_before=[]}comments._dumped=self;if(node instanceof AST_Exit&&node.value){var tw=new TreeWalker(function(node){var parent=tw.parent();if(parent instanceof AST_Exit||parent instanceof AST_Binary&&parent.left===node||parent.TYPE=="Call"&&parent.expression===node||parent instanceof AST_Conditional&&parent.condition===node||parent instanceof AST_Dot&&parent.expression===node||parent instanceof AST_Sequence&&parent.expressions[0]===node||parent instanceof AST_Sub&&parent.expression===node||parent instanceof AST_UnaryPostfix){var text=node.start.comments_before;if(text&&text._dumped!==self){text._dumped=self;comments=comments.concat(text)}}else{return true}});tw.push(node);node.value.walk(tw)}if(current_pos==0){if(comments.length>0&&options.shebang&&comments[0].type=="comment5"){print("#!"+comments.shift().value+"\n");indent()}var preamble=options.preamble;if(preamble){print(preamble.replace(/\r\n?|[\n\u2028\u2029]|\s*$/g,"\n"))}}comments=comments.filter(comment_filter,node);if(comments.length==0)return;var last_nlb=has_nlb();comments.forEach(function(c,i){if(!last_nlb){if(c.nlb){print("\n");indent();last_nlb=true}else if(i>0){space()}}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," ")+"\n");indent();last_nlb=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");last_nlb=false}});if(!last_nlb){if(start.nlb){print("\n");indent()}else{space()}}}function append_comments(node,tail){var self=this;var token=node.end;if(!token)return;var comments=token[tail?"comments_before":"comments_after"];if(!comments||comments._dumped===self)return;if(!(node instanceof AST_Statement||all(comments,function(c){return!/comment[134]/.test(c.type)})))return;comments._dumped=self;var insert=OUTPUT.length;comments.filter(comment_filter,node).forEach(function(c,i){need_space=false;if(need_newline_indented){print("\n");indent();need_newline_indented=false}else if(c.nlb&&(i>0||!has_nlb())){print("\n");indent()}else if(i>0||!tail){space()}if(/comment[134]/.test(c.type)){print("//"+c.value.replace(/[@#]__PURE__/g," "));need_newline_indented=true}else if(c.type=="comment2"){print("/*"+c.value.replace(/[@#]__PURE__/g," ")+"*/");need_space=true}});if(OUTPUT.length>insert)newline_insert=insert}var stack=[];return{get:get,toString:get,indent:indent,indentation:function(){return indentation},current_width:function(){return current_col-indentation},should_break:function(){return options.width&&this.current_width()>=options.width},has_parens:function(){return OUTPUT.slice(-1)=="("},newline:newline,print:print,space:space,comma:comma,colon:colon,last:function(){return last},semicolon:semicolon,force_semicolon:force_semicolon,to_utf8:to_utf8,print_name:function(name){print(make_name(name))},print_string:function(str,quote,escape_directive){var encoded=encode_string(str,quote);if(escape_directive===true&&encoded.indexOf("\\")===-1){if(!EXPECT_DIRECTIVE.test(OUTPUT)){force_semicolon()}force_semicolon()}print(encoded)},encode_string:encode_string,next_indent:next_indent,with_indent:with_indent,with_block:with_block,with_parens:with_parens,with_square:with_square,add_mapping:add_mapping,option:function(opt){return options[opt]},prepend_comments:readonly?noop:prepend_comments,append_comments:readonly||comment_filter===return_false?noop:append_comments,line:function(){return current_line},col:function(){return current_col},pos:function(){return current_pos},push_node:function(node){stack.push(node)},pop_node:function(){return stack.pop()},parent:function(n){return stack[stack.length-2-(n||0)]}}}(function(){function DEFPRINT(nodetype,generator){nodetype.DEFMETHOD("_codegen",generator)}var in_directive=false;var active_scope=null;var use_asm=null;AST_Node.DEFMETHOD("print",function(stream,force_parens){var self=this,generator=self._codegen;if(self instanceof AST_Scope){active_scope=self}else if(!use_asm&&self instanceof AST_Directive&&self.value=="use asm"){use_asm=active_scope}function doit(){stream.prepend_comments(self);self.add_source_map(stream);generator(self,stream);stream.append_comments(self)}stream.push_node(self);if(force_parens||self.needs_parens(stream)){stream.with_parens(doit)}else{doit()}stream.pop_node();if(self===use_asm){use_asm=null}});AST_Node.DEFMETHOD("_print",AST_Node.prototype.print);AST_Node.DEFMETHOD("print_to_string",function(options){var s=OutputStream(options);this.print(s);return s.get()});function PARENS(nodetype,func){if(Array.isArray(nodetype)){nodetype.forEach(function(nodetype){PARENS(nodetype,func)})}else{nodetype.DEFMETHOD("needs_parens",func)}}PARENS(AST_Node,return_false);PARENS(AST_Function,function(output){if(!output.has_parens()&&first_in_statement(output)){return true}if(output.option("webkit")){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this){return true}}if(output.option("wrap_iife")){var p=output.parent();return p instanceof AST_Call&&p.expression===this}return false});PARENS(AST_Object,function(output){return!output.has_parens()&&first_in_statement(output)});PARENS(AST_Unary,function(output){var p=output.parent();return p instanceof AST_PropAccess&&p.expression===this||p instanceof AST_Call&&p.expression===this});PARENS(AST_Sequence,function(output){var p=output.parent();return p instanceof AST_Call||p instanceof AST_Unary||p instanceof AST_Binary||p instanceof AST_VarDef||p instanceof AST_PropAccess||p instanceof AST_Array||p instanceof AST_ObjectProperty||p instanceof AST_Conditional});PARENS(AST_Binary,function(output){var p=output.parent();if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Unary)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true;if(p instanceof AST_Binary){var po=p.operator,pp=PRECEDENCE[po];var so=this.operator,sp=PRECEDENCE[so];if(pp>sp||pp==sp&&this===p.right){return true}}});PARENS(AST_PropAccess,function(output){var p=output.parent();if(p instanceof AST_New&&p.expression===this){var parens=false;this.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Call){parens=true;return true}}));return parens}});PARENS(AST_Call,function(output){var p=output.parent(),p1;if(p instanceof AST_New&&p.expression===this)return true;return this.expression instanceof AST_Function&&p instanceof AST_PropAccess&&p.expression===this&&(p1=output.parent(1))instanceof AST_Assign&&p1.left===p});PARENS(AST_New,function(output){var p=output.parent();if(!need_constructor_parens(this,output)&&(p instanceof AST_PropAccess||p instanceof AST_Call&&p.expression===this))return true});PARENS(AST_Number,function(output){var p=output.parent();if(p instanceof AST_PropAccess&&p.expression===this){var value=this.getValue();if(value<0||/^0/.test(make_num(value))){return true}}});PARENS([AST_Assign,AST_Conditional],function(output){var p=output.parent();if(p instanceof AST_Unary)return true;if(p instanceof AST_Binary&&!(p instanceof AST_Assign))return true;if(p instanceof AST_Call&&p.expression===this)return true;if(p instanceof AST_Conditional&&p.condition===this)return true;if(p instanceof AST_PropAccess&&p.expression===this)return true});DEFPRINT(AST_Directive,function(self,output){output.print_string(self.value,self.quote);output.semicolon()});DEFPRINT(AST_Debugger,function(self,output){output.print("debugger");output.semicolon()});function display_body(body,is_toplevel,output,allow_directives){var last=body.length-1;in_directive=allow_directives;body.forEach(function(stmt,i){if(in_directive===true&&!(stmt instanceof AST_Directive||stmt instanceof AST_EmptyStatement||stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String)){in_directive=false}if(!(stmt instanceof AST_EmptyStatement)){output.indent();stmt.print(output);if(!(i==last&&is_toplevel)){output.newline();if(is_toplevel)output.newline()}}if(in_directive===true&&stmt instanceof AST_SimpleStatement&&stmt.body instanceof AST_String){in_directive=false}});in_directive=false}AST_StatementWithBody.DEFMETHOD("_do_print_body",function(output){force_statement(this.body,output)});DEFPRINT(AST_Statement,function(self,output){self.body.print(output);output.semicolon()});DEFPRINT(AST_Toplevel,function(self,output){display_body(self.body,true,output,true);output.print("")});DEFPRINT(AST_LabeledStatement,function(self,output){self.label.print(output);output.colon();self.body.print(output)});DEFPRINT(AST_SimpleStatement,function(self,output){self.body.print(output);output.semicolon()});function print_bracketed(self,output,allow_directives){if(self.body.length>0){output.with_block(function(){display_body(self.body,false,output,allow_directives)})}else{output.print("{");output.with_indent(output.next_indent(),function(){output.append_comments(self,true)});output.print("}")}}DEFPRINT(AST_BlockStatement,function(self,output){print_bracketed(self,output)});DEFPRINT(AST_EmptyStatement,function(self,output){output.semicolon()});DEFPRINT(AST_Do,function(self,output){output.print("do");output.space();make_block(self.body,output);output.space();output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.semicolon()});DEFPRINT(AST_While,function(self,output){output.print("while");output.space();output.with_parens(function(){self.condition.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_For,function(self,output){output.print("for");output.space();output.with_parens(function(){if(self.init){if(self.init instanceof AST_Definitions){self.init.print(output)}else{parenthesize_for_noin(self.init,output,true)}output.print(";");output.space()}else{output.print(";")}if(self.condition){self.condition.print(output);output.print(";");output.space()}else{output.print(";")}if(self.step){self.step.print(output)}});output.space();self._do_print_body(output)});DEFPRINT(AST_ForIn,function(self,output){output.print("for");output.space();output.with_parens(function(){self.init.print(output);output.space();output.print("in");output.space();self.object.print(output)});output.space();self._do_print_body(output)});DEFPRINT(AST_With,function(self,output){output.print("with");output.space();output.with_parens(function(){self.expression.print(output)});output.space();self._do_print_body(output)});AST_Lambda.DEFMETHOD("_do_print",function(output,nokeyword){var self=this;if(!nokeyword){output.print("function")}if(self.name){output.space();self.name.print(output)}output.with_parens(function(){self.argnames.forEach(function(arg,i){if(i)output.comma();arg.print(output)})});output.space();print_bracketed(self,output,true)});DEFPRINT(AST_Lambda,function(self,output){self._do_print(output)});AST_Exit.DEFMETHOD("_do_print",function(output,kind){output.print(kind);if(this.value){output.space();this.value.print(output)}output.semicolon()});DEFPRINT(AST_Return,function(self,output){self._do_print(output,"return")});DEFPRINT(AST_Throw,function(self,output){self._do_print(output,"throw")});AST_LoopControl.DEFMETHOD("_do_print",function(output,kind){output.print(kind);if(this.label){output.space();this.label.print(output)}output.semicolon()});DEFPRINT(AST_Break,function(self,output){self._do_print(output,"break")});DEFPRINT(AST_Continue,function(self,output){self._do_print(output,"continue")});function make_then(self,output){var b=self.body;if(output.option("bracketize")||output.option("ie8")&&b instanceof AST_Do)return make_block(b,output);if(!b)return output.force_semicolon();while(true){if(b instanceof AST_If){if(!b.alternative){make_block(self.body,output);return}b=b.alternative}else if(b instanceof AST_StatementWithBody){b=b.body}else break}force_statement(self.body,output)}DEFPRINT(AST_If,function(self,output){output.print("if");output.space();output.with_parens(function(){self.condition.print(output)});output.space();if(self.alternative){make_then(self,output);output.space();output.print("else");output.space();if(self.alternative instanceof AST_If)self.alternative.print(output);else force_statement(self.alternative,output)}else{self._do_print_body(output)}});DEFPRINT(AST_Switch,function(self,output){output.print("switch");output.space();output.with_parens(function(){self.expression.print(output)});output.space();var last=self.body.length-1;if(last<0)output.print("{}");else output.with_block(function(){self.body.forEach(function(branch,i){output.indent(true);branch.print(output);if(i<last&&branch.body.length>0)output.newline()})})});AST_SwitchBranch.DEFMETHOD("_do_print_body",function(output){output.newline();this.body.forEach(function(stmt){output.indent();stmt.print(output);output.newline()})});DEFPRINT(AST_Default,function(self,output){output.print("default:");self._do_print_body(output)});DEFPRINT(AST_Case,function(self,output){output.print("case");output.space();self.expression.print(output);output.print(":");self._do_print_body(output)});DEFPRINT(AST_Try,function(self,output){output.print("try");output.space();print_bracketed(self,output);if(self.bcatch){output.space();self.bcatch.print(output)}if(self.bfinally){output.space();self.bfinally.print(output)}});DEFPRINT(AST_Catch,function(self,output){output.print("catch");output.space();output.with_parens(function(){self.argname.print(output)});output.space();print_bracketed(self,output)});DEFPRINT(AST_Finally,function(self,output){output.print("finally");output.space();print_bracketed(self,output)});AST_Definitions.DEFMETHOD("_do_print",function(output,kind){output.print(kind);output.space();this.definitions.forEach(function(def,i){if(i)output.comma();def.print(output)});var p=output.parent();var in_for=p instanceof AST_For||p instanceof AST_ForIn;var avoid_semicolon=in_for&&p.init===this;if(!avoid_semicolon)output.semicolon()});DEFPRINT(AST_Var,function(self,output){self._do_print(output,"var")});function parenthesize_for_noin(node,output,noin){var parens=false;if(noin)node.walk(new TreeWalker(function(node){if(parens||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){parens=true;return true}}));node.print(output,parens)}DEFPRINT(AST_VarDef,function(self,output){self.name.print(output);if(self.value){output.space();output.print("=");output.space();var p=output.parent(1);var noin=p instanceof AST_For||p instanceof AST_ForIn;parenthesize_for_noin(self.value,output,noin)}});DEFPRINT(AST_Call,function(self,output){self.expression.print(output);if(self instanceof AST_New&&!need_constructor_parens(self,output))return;if(self.expression instanceof AST_Call||self.expression instanceof AST_Lambda){output.add_mapping(self.start)}output.with_parens(function(){self.args.forEach(function(expr,i){if(i)output.comma();expr.print(output)})})});DEFPRINT(AST_New,function(self,output){output.print("new");output.space();AST_Call.prototype._codegen(self,output)});AST_Sequence.DEFMETHOD("_do_print",function(output){this.expressions.forEach(function(node,index){if(index>0){output.comma();if(output.should_break()){output.newline();output.indent()}}node.print(output)})});DEFPRINT(AST_Sequence,function(self,output){self._do_print(output)});DEFPRINT(AST_Dot,function(self,output){var expr=self.expression;expr.print(output);var prop=self.property;if(output.option("ie8")&&RESERVED_WORDS(prop)){output.print("[");output.add_mapping(self.end);output.print_string(prop);output.print("]")}else{if(expr instanceof AST_Number&&expr.getValue()>=0){if(!/[xa-f.)]/i.test(output.last())){output.print(".")}}output.print(".");output.add_mapping(self.end);output.print_name(prop)}});DEFPRINT(AST_Sub,function(self,output){self.expression.print(output);output.print("[");self.property.print(output);output.print("]")});DEFPRINT(AST_UnaryPrefix,function(self,output){var op=self.operator;output.print(op);if(/^[a-z]/i.test(op)||/[+-]$/.test(op)&&self.expression instanceof AST_UnaryPrefix&&/^[+-]/.test(self.expression.operator)){output.space()}self.expression.print(output)});DEFPRINT(AST_UnaryPostfix,function(self,output){self.expression.print(output);output.print(self.operator)});DEFPRINT(AST_Binary,function(self,output){var op=self.operator;self.left.print(output);if(op[0]==">"&&self.left instanceof AST_UnaryPostfix&&self.left.operator=="--"){output.print(" ")}else{output.space()}output.print(op);if((op=="<"||op=="<<")&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="!"&&self.right.expression instanceof AST_UnaryPrefix&&self.right.expression.operator=="--"){output.print(" ")}else{output.space()}self.right.print(output)});DEFPRINT(AST_Conditional,function(self,output){self.condition.print(output);output.space();output.print("?");output.space();self.consequent.print(output);output.space();output.colon();self.alternative.print(output)});DEFPRINT(AST_Array,function(self,output){output.with_square(function(){var a=self.elements,len=a.length;if(len>0)output.space();a.forEach(function(exp,i){if(i)output.comma();exp.print(output);if(i===len-1&&exp instanceof AST_Hole)output.comma()});if(len>0)output.space()})});DEFPRINT(AST_Object,function(self,output){if(self.properties.length>0)output.with_block(function(){self.properties.forEach(function(prop,i){if(i){output.print(",");output.newline()}output.indent();prop.print(output)});output.newline()});else output.print("{}")});function print_property_name(key,quote,output){if(output.option("quote_keys")){output.print_string(key)}else if(""+ +key==key&&key>=0){output.print(make_num(key))}else if(RESERVED_WORDS(key)?!output.option("ie8"):is_identifier_string(key)){if(quote&&output.option("keep_quoted_props")){output.print_string(key,quote)}else{output.print_name(key)}}else{output.print_string(key,quote)}}DEFPRINT(AST_ObjectKeyVal,function(self,output){print_property_name(self.key,self.quote,output);output.colon();self.value.print(output)});AST_ObjectProperty.DEFMETHOD("_print_getter_setter",function(type,output){output.print(type);output.space();print_property_name(this.key.name,this.quote,output);this.value._do_print(output,true)});DEFPRINT(AST_ObjectSetter,function(self,output){self._print_getter_setter("set",output)});DEFPRINT(AST_ObjectGetter,function(self,output){self._print_getter_setter("get",output)});DEFPRINT(AST_Symbol,function(self,output){var def=self.definition();output.print_name(def?def.mangled_name||def.name:self.name)});DEFPRINT(AST_Hole,noop);DEFPRINT(AST_This,function(self,output){output.print("this")});DEFPRINT(AST_Constant,function(self,output){output.print(self.getValue())});DEFPRINT(AST_String,function(self,output){output.print_string(self.getValue(),self.quote,in_directive)});DEFPRINT(AST_Number,function(self,output){if(use_asm&&self.start&&self.start.raw!=null){output.print(self.start.raw)}else{output.print(make_num(self.getValue()))}});DEFPRINT(AST_RegExp,function(self,output){var regexp=self.getValue();var str=regexp.toString();if(regexp.raw_source){str="/"+regexp.raw_source+str.slice(str.lastIndexOf("/"))}str=output.to_utf8(str);output.print(str);var p=output.parent();if(p instanceof AST_Binary&&/^in/.test(p.operator)&&p.left===self)output.print(" ")});function force_statement(stat,output){if(output.option("bracketize")){make_block(stat,output)}else{if(!stat||stat instanceof AST_EmptyStatement)output.force_semicolon();else stat.print(output)}}function need_constructor_parens(self,output){if(self.args.length>0)return true;return output.option("beautify")}function best_of(a){var best=a[0],len=best.length;for(var i=1;i<a.length;++i){if(a[i].length<len){best=a[i];len=best.length}}return best}function make_num(num){var str=num.toString(10),a=[str.replace(/^0\./,".").replace("e+","e")],m;if(Math.floor(num)===num){if(num>=0){a.push("0x"+num.toString(16).toLowerCase(),"0"+num.toString(8))}else{a.push("-0x"+(-num).toString(16).toLowerCase(),"-0"+(-num).toString(8))}if(m=/^(.*?)(0+)$/.exec(num)){a.push(m[1]+"e"+m[2].length)}}else if(m=/^0?\.(0+)(.*)$/.exec(num)){a.push(m[2]+"e-"+(m[1].length+m[2].length),str.substr(str.indexOf(".")))}return best_of(a)}function make_block(stmt,output){if(!stmt||stmt instanceof AST_EmptyStatement)output.print("{}");else if(stmt instanceof AST_BlockStatement)stmt.print(output);else output.with_block(function(){output.indent();stmt.print(output);output.newline()})}function DEFMAP(nodetype,generator){nodetype.DEFMETHOD("add_source_map",function(stream){generator(this,stream)})}DEFMAP(AST_Node,noop);function basic_sourcemap_gen(self,output){output.add_mapping(self.start)}DEFMAP(AST_Directive,basic_sourcemap_gen);DEFMAP(AST_Debugger,basic_sourcemap_gen);DEFMAP(AST_Symbol,basic_sourcemap_gen);DEFMAP(AST_Jump,basic_sourcemap_gen);DEFMAP(AST_StatementWithBody,basic_sourcemap_gen);DEFMAP(AST_LabeledStatement,noop);DEFMAP(AST_Lambda,basic_sourcemap_gen);DEFMAP(AST_Switch,basic_sourcemap_gen);DEFMAP(AST_SwitchBranch,basic_sourcemap_gen);DEFMAP(AST_BlockStatement,basic_sourcemap_gen);DEFMAP(AST_Toplevel,noop);DEFMAP(AST_New,basic_sourcemap_gen);DEFMAP(AST_Try,basic_sourcemap_gen);DEFMAP(AST_Catch,basic_sourcemap_gen);DEFMAP(AST_Finally,basic_sourcemap_gen);DEFMAP(AST_Definitions,basic_sourcemap_gen);DEFMAP(AST_Constant,basic_sourcemap_gen);DEFMAP(AST_ObjectSetter,function(self,output){output.add_mapping(self.start,self.key.name)});DEFMAP(AST_ObjectGetter,function(self,output){output.add_mapping(self.start,self.key.name)});DEFMAP(AST_ObjectProperty,function(self,output){output.add_mapping(self.start,self.key)})})();
/***********************************************************************
A JavaScript tokenizer / parser / beautifier / compressor.
https://github.com/mishoo/UglifyJS2
@@ -298,11 +298,11 @@
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
***********************************************************************/
-"use strict";function Compressor(options,false_by_default){if(!(this instanceof Compressor))return new Compressor(options,false_by_default);TreeTransformer.call(this,this.before,this.after);this.options=defaults(options,{booleans:!false_by_default,collapse_vars:!false_by_default,comparisons:!false_by_default,conditionals:!false_by_default,dead_code:!false_by_default,drop_console:false,drop_debugger:!false_by_default,evaluate:!false_by_default,expression:false,global_defs:{},hoist_funs:false,hoist_props:!false_by_default,hoist_vars:false,ie8:false,if_return:!false_by_default,inline:!false_by_default,join_vars:!false_by_default,keep_fargs:true,keep_fnames:false,keep_infinity:false,loops:!false_by_default,negate_iife:!false_by_default,passes:1,properties:!false_by_default,pure_getters:!false_by_default&&"strict",pure_funcs:null,reduce_funcs:!false_by_default,reduce_vars:!false_by_default,sequences:!false_by_default,side_effects:!false_by_default,switches:!false_by_default,top_retain:null,toplevel:!!(options&&options["top_retain"]),typeofs:!false_by_default,unsafe:false,unsafe_comps:false,unsafe_Function:false,unsafe_math:false,unsafe_proto:false,unsafe_regexp:false,unsafe_undefined:false,unused:!false_by_default,warnings:false},true);var global_defs=this.options["global_defs"];if(typeof global_defs=="object")for(var key in global_defs){if(/^@/.test(key)&&HOP(global_defs,key)){global_defs[key.slice(1)]=parse(global_defs[key],{expression:true})}}if(this.options["inline"]===true)this.options["inline"]=3;var pure_funcs=this.options["pure_funcs"];if(typeof pure_funcs=="function"){this.pure_funcs=pure_funcs}else{this.pure_funcs=pure_funcs?function(node){return pure_funcs.indexOf(node.expression.print_to_string())<0}:return_true}var top_retain=this.options["top_retain"];if(top_retain instanceof RegExp){this.top_retain=function(def){return top_retain.test(def.name)}}else if(typeof top_retain=="function"){this.top_retain=top_retain}else if(top_retain){if(typeof top_retain=="string"){top_retain=top_retain.split(/,/)}this.top_retain=function(def){return top_retain.indexOf(def.name)>=0}}var toplevel=this.options["toplevel"];this.toplevel=typeof toplevel=="string"?{funcs:/funcs/.test(toplevel),vars:/vars/.test(toplevel)}:{funcs:toplevel,vars:toplevel};var sequences=this.options["sequences"];this.sequences_limit=sequences==1?800:sequences|0;this.warnings_produced={}}Compressor.prototype=new TreeTransformer;merge(Compressor.prototype,{option:function(key){return this.options[key]},exposed:function(def){if(def.global)for(var i=0,len=def.orig.length;i<len;i++)if(!this.toplevel[def.orig[i]instanceof AST_SymbolDefun?"funcs":"vars"])return true;return false},in_boolean_context:function(){if(!this.option("booleans"))return false;var self=this.self();for(var i=0,p;p=this.parent(i);i++){if(p instanceof AST_SimpleStatement||p instanceof AST_Conditional&&p.condition===self||p instanceof AST_DWLoop&&p.condition===self||p instanceof AST_For&&p.condition===self||p instanceof AST_If&&p.condition===self||p instanceof AST_UnaryPrefix&&p.operator=="!"&&p.expression===self){return true}if(p instanceof AST_Binary&&(p.operator=="&&"||p.operator=="||")||p instanceof AST_Conditional||p.tail_node()===self){self=p}else{return false}}},compress:function(node){if(this.option("expression")){node.process_expression(true)}var passes=+this.options.passes||1;var min_count=1/0;var stopping=false;var mangle={ie8:this.option("ie8")};for(var pass=0;pass<passes;pass++){node.figure_out_scope(mangle);if(pass>0||this.option("reduce_vars"))node.reset_opt_flags(this);node=node.transform(this);if(passes>1){var count=0;node.walk(new TreeWalker(function(){count++}));this.info("pass "+pass+": last_count: "+min_count+", count: "+count);if(count<min_count){min_count=count;stopping=false}else if(stopping){break}else{stopping=true}}}if(this.option("expression")){node.process_expression(false)}return node},info:function(){if(this.options.warnings=="verbose"){AST_Node.warn.apply(AST_Node,arguments)}},warn:function(text,props){if(this.options.warnings){var message=string_template(text,props);if(!(message in this.warnings_produced)){this.warnings_produced[message]=true;AST_Node.warn.apply(AST_Node,arguments)}}},clear_warnings:function(){this.warnings_produced={}},before:function(node,descend,in_list){if(node._squeezed)return node;var was_scope=false;if(node instanceof AST_Scope){node=node.hoist_properties(this);node=node.hoist_declarations(this);was_scope=true}descend(node,this);descend(node,this);var opt=node.optimize(this);if(was_scope&&opt instanceof AST_Scope){opt.drop_unused(this);descend(opt,this)}if(opt===node)opt._squeezed=true;return opt}});(function(){function OPT(node,optimizer){node.DEFMETHOD("optimize",function(compressor){var self=this;if(self._optimized)return self;if(compressor.has_directive("use asm"))return self;var opt=optimizer(self,compressor);opt._optimized=true;return opt})}OPT(AST_Node,function(self,compressor){return self});AST_Node.DEFMETHOD("equivalent_to",function(node){return this.TYPE==node.TYPE&&this.print_to_string()==node.print_to_string()});AST_Scope.DEFMETHOD("process_expression",function(insert,compressor){var self=this;var tt=new TreeTransformer(function(node){if(insert&&node instanceof AST_SimpleStatement){return make_node(AST_Return,node,{value:node.body})}if(!insert&&node instanceof AST_Return){if(compressor){var value=node.value&&node.value.drop_side_effect_free(compressor,true);return value?make_node(AST_SimpleStatement,node,{body:value}):make_node(AST_EmptyStatement,node)}return make_node(AST_SimpleStatement,node,{body:node.value||make_node(AST_UnaryPrefix,node,{operator:"void",expression:make_node(AST_Number,node,{value:0})})})}if(node instanceof AST_Lambda&&node!==self){return node}if(node instanceof AST_Block){var index=node.body.length-1;if(index>=0){node.body[index]=node.body[index].transform(tt)}}else if(node instanceof AST_If){node.body=node.body.transform(tt);if(node.alternative){node.alternative=node.alternative.transform(tt)}}else if(node instanceof AST_With){node.body=node.body.transform(tt)}return node});self.transform(tt)});(function(def){def(AST_Node,noop);function reset_def(compressor,def){def.assignments=0;def.chained=false;def.direct_access=false;def.escaped=false;if(def.scope.uses_eval||def.scope.uses_with){def.fixed=false}else if(!compressor.exposed(def)){def.fixed=def.init}else{def.fixed=false}def.recursive_refs=0;def.references=[];def.should_replace=undefined;def.single_use=undefined}function reset_variables(tw,compressor,node){node.variables.each(function(def){reset_def(compressor,def);if(def.fixed===null){def.safe_ids=tw.safe_ids;mark(tw,def,true)}else if(def.fixed){tw.loop_ids[def.id]=tw.in_loop;mark(tw,def,true)}})}function push(tw){tw.safe_ids=Object.create(tw.safe_ids)}function pop(tw){tw.safe_ids=Object.getPrototypeOf(tw.safe_ids)}function mark(tw,def,safe){tw.safe_ids[def.id]=safe}function safe_to_read(tw,def){if(tw.safe_ids[def.id]){if(def.fixed==null){var orig=def.orig[0];if(orig instanceof AST_SymbolFunarg||orig.name=="arguments")return false;def.fixed=make_node(AST_Undefined,orig)}return true}return def.fixed instanceof AST_Defun}function safe_to_assign(tw,def,value){if(def.fixed===undefined)return true;if(def.fixed===null&&def.safe_ids){def.safe_ids[def.id]=false;delete def.safe_ids;return true}if(!HOP(tw.safe_ids,def.id))return false;if(!safe_to_read(tw,def))return false;if(def.fixed===false)return false;if(def.fixed!=null&&(!value||def.references.length>def.assignments))return false;return all(def.orig,function(sym){return!(sym instanceof AST_SymbolDefun||sym instanceof AST_SymbolLambda)})}function ref_once(tw,compressor,def){return compressor.option("unused")&&!def.scope.uses_eval&&!def.scope.uses_with&&def.references.length-def.recursive_refs==1&&tw.loop_ids[def.id]===tw.in_loop}function is_immutable(value){if(!value)return false;return value.is_constant()||value instanceof AST_Lambda||value instanceof AST_This}function read_property(obj,key){key=get_value(key);if(key instanceof AST_Node)return;var value;if(obj instanceof AST_Array){var elements=obj.elements;if(key=="length")return make_node_from_constant(elements.length,obj);if(typeof key=="number"&&key in elements)value=elements[key]}else if(obj instanceof AST_Object){key=""+key;var props=obj.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(!(prop instanceof AST_ObjectKeyVal))return;if(!value&&props[i].key===key)value=props[i].value}}return value instanceof AST_SymbolRef&&value.fixed_value()||value}function is_modified(tw,node,value,level,immutable){var parent=tw.parent(level);if(is_lhs(node,parent)||!immutable&&parent instanceof AST_Call&&parent.expression===node&&(!(value instanceof AST_Function)||!(parent instanceof AST_New)&&value.contains_this())){return true}else if(parent instanceof AST_Array){return is_modified(tw,parent,parent,level+1)}else if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);return is_modified(tw,obj,obj,level+2)}else if(parent instanceof AST_PropAccess&&parent.expression===node){return!immutable&&is_modified(tw,parent,read_property(value,parent.property),level+1)}}function mark_escaped(tw,d,scope,node,value,level,depth){var parent=tw.parent(level);if(value&&value.is_constant())return;if(parent instanceof AST_Assign&&parent.operator=="="&&node===parent.right||parent instanceof AST_Call&&node!==parent.expression||parent instanceof AST_Exit&&node===parent.value&&node.scope!==d.scope||parent instanceof AST_VarDef&&node===parent.value){if(depth>1&&!(value&&value.is_constant_expression(scope)))depth=1;if(!d.escaped||d.escaped>depth)d.escaped=depth;return}else if(parent instanceof AST_Array||parent instanceof AST_Binary&&lazy_op(parent.operator)||parent instanceof AST_Conditional&&node!==parent.condition||parent instanceof AST_Sequence&&node===parent.tail_node()){mark_escaped(tw,d,scope,parent,parent,level+1,depth)}else if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);mark_escaped(tw,d,scope,obj,obj,level+2,depth)}else if(parent instanceof AST_PropAccess&&node===parent.expression){value=read_property(value,parent.property);mark_escaped(tw,d,scope,parent,value,level+1,depth+1);if(value)return}if(level==0)d.direct_access=true}var suppressor=new TreeWalker(function(node){if(!(node instanceof AST_Symbol))return;var d=node.definition();if(!d)return;if(node instanceof AST_SymbolRef)d.references.push(node);d.fixed=false});def(AST_Accessor,function(tw,descend,compressor){push(tw);reset_variables(tw,compressor,this);descend();pop(tw);return true});def(AST_Assign,function(tw){var node=this;if(!(node.left instanceof AST_SymbolRef))return;var d=node.left.definition();var fixed=d.fixed;if(!fixed&&node.operator!="=")return;if(!safe_to_assign(tw,d,node.right))return;d.references.push(node.left);d.assignments++;if(node.operator!="=")d.chained=true;d.fixed=node.operator=="="?function(){return node.right}:function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:fixed instanceof AST_Node?fixed:fixed(),right:node.right})};mark(tw,d,false);node.right.walk(tw);mark(tw,d,true);return true});def(AST_Binary,function(tw){if(!lazy_op(this.operator))return;this.left.walk(tw);push(tw);this.right.walk(tw);pop(tw);return true});def(AST_Conditional,function(tw){this.condition.walk(tw);push(tw);this.consequent.walk(tw);pop(tw);push(tw);this.alternative.walk(tw);pop(tw);return true});def(AST_Defun,function(tw,descend,compressor){this.inlined=false;var save_ids=tw.safe_ids;tw.safe_ids=Object.create(null);reset_variables(tw,compressor,this);descend();tw.safe_ids=save_ids;return true});def(AST_Do,function(tw){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);this.condition.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_For,function(tw){if(this.init)this.init.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;if(this.condition){push(tw);this.condition.walk(tw);pop(tw)}push(tw);this.body.walk(tw);pop(tw);if(this.step){push(tw);this.step.walk(tw);pop(tw)}tw.in_loop=saved_loop;return true});def(AST_ForIn,function(tw){this.init.walk(suppressor);this.object.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_Function,function(tw,descend,compressor){var node=this;node.inlined=false;push(tw);reset_variables(tw,compressor,node);var iife;if(!node.name&&(iife=tw.parent())instanceof AST_Call&&iife.expression===node){node.argnames.forEach(function(arg,i){var d=arg.definition();if(!node.uses_arguments&&d.fixed===undefined){d.fixed=function(){return iife.args[i]||make_node(AST_Undefined,iife)};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,true)}else{d.fixed=false}})}descend();pop(tw);return true});def(AST_If,function(tw){this.condition.walk(tw);push(tw);this.body.walk(tw);pop(tw);if(this.alternative){push(tw);this.alternative.walk(tw);pop(tw)}return true});def(AST_LabeledStatement,function(tw){push(tw);this.body.walk(tw);pop(tw);return true});def(AST_SwitchBranch,function(tw,descend){push(tw);descend();pop(tw);return true});def(AST_SymbolCatch,function(){this.definition().fixed=false});def(AST_SymbolRef,function(tw,descend,compressor){var d=this.definition();d.references.push(this);if(d.references.length==1&&!d.fixed&&d.orig[0]instanceof AST_SymbolDefun){tw.loop_ids[d.id]=tw.in_loop}var value;if(d.fixed===undefined||!safe_to_read(tw,d)||d.single_use=="m"){d.fixed=false}else if(d.fixed){value=this.fixed_value();if(value instanceof AST_Lambda&&recursive_ref(tw,d)){d.recursive_refs++}else if(value&&ref_once(tw,compressor,d)){d.single_use=value instanceof AST_Lambda||d.scope===this.scope&&value.is_constant_expression()}else{d.single_use=false}if(is_modified(tw,this,value,0,is_immutable(value))){if(d.single_use){d.single_use="m"}else{d.fixed=false}}}mark_escaped(tw,d,this.scope,this,value,0,1)});def(AST_Toplevel,function(tw,descend,compressor){this.globals.each(function(def){reset_def(compressor,def)});reset_variables(tw,compressor,this)});def(AST_Try,function(tw){push(tw);walk_body(this,tw);pop(tw);if(this.bcatch){push(tw);this.bcatch.walk(tw);pop(tw)}if(this.bfinally)this.bfinally.walk(tw);return true});def(AST_Unary,function(tw,descend){var node=this;if(node.operator!="++"&&node.operator!="--")return;if(!(node.expression instanceof AST_SymbolRef))return;var d=node.expression.definition();var fixed=d.fixed;if(!fixed)return;if(!safe_to_assign(tw,d,true))return;d.references.push(node.expression);d.assignments++;d.chained=true;d.fixed=function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:make_node(AST_UnaryPrefix,node,{operator:"+",expression:fixed instanceof AST_Node?fixed:fixed()}),right:make_node(AST_Number,node,{value:1})})};mark(tw,d,true);return true});def(AST_VarDef,function(tw,descend){var node=this;var d=node.name.definition();if(node.value){if(safe_to_assign(tw,d,node.value)){d.fixed=function(){return node.value};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,false);descend();mark(tw,d,true);return true}else{d.fixed=false}}});def(AST_While,function(tw){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.condition.walk(tw);this.body.walk(tw);pop(tw);tw.in_loop=saved_loop;return true})})(function(node,func){node.DEFMETHOD("reduce_vars",func)});AST_Toplevel.DEFMETHOD("reset_opt_flags",function(compressor){var reduce_vars=compressor.option("reduce_vars");var tw=new TreeWalker(function(node,descend){node._squeezed=false;node._optimized=false;if(reduce_vars)return node.reduce_vars(tw,descend,compressor)});tw.safe_ids=Object.create(null);tw.in_loop=null;tw.loop_ids=Object.create(null);this.walk(tw)});AST_Symbol.DEFMETHOD("fixed_value",function(){var fixed=this.definition().fixed;if(!fixed||fixed instanceof AST_Node)return fixed;return fixed()});AST_SymbolRef.DEFMETHOD("is_immutable",function(){var orig=this.definition().orig;return orig.length==1&&orig[0]instanceof AST_SymbolLambda});function is_lhs_read_only(lhs){if(lhs instanceof AST_This)return true;if(lhs instanceof AST_SymbolRef)return lhs.definition().orig[0]instanceof AST_SymbolLambda;if(lhs instanceof AST_PropAccess){lhs=lhs.expression;if(lhs instanceof AST_SymbolRef){if(lhs.is_immutable())return false;lhs=lhs.fixed_value()}if(!lhs)return true;if(lhs instanceof AST_RegExp)return false;if(lhs instanceof AST_Constant)return true;return is_lhs_read_only(lhs)}return false}function find_variable(compressor,name){var scope,i=0;while(scope=compressor.parent(i++)){if(scope instanceof AST_Scope)break;if(scope instanceof AST_Catch){scope=scope.argname.definition().scope;break}}return scope.find_variable(name)}function make_node(ctor,orig,props){if(!props)props={};if(orig){if(!props.start)props.start=orig.start;if(!props.end)props.end=orig.end}return new ctor(props)}function make_sequence(orig,expressions){if(expressions.length==1)return expressions[0];return make_node(AST_Sequence,orig,{expressions:expressions.reduce(merge_sequence,[])})}function make_node_from_constant(val,orig){switch(typeof val){case"string":return make_node(AST_String,orig,{value:val});case"number":if(isNaN(val))return make_node(AST_NaN,orig);if(isFinite(val)){return 1/val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Number,orig,{value:-val})}):make_node(AST_Number,orig,{value:val})}return val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Infinity,orig)}):make_node(AST_Infinity,orig);case"boolean":return make_node(val?AST_True:AST_False,orig);case"undefined":return make_node(AST_Undefined,orig);default:if(val===null){return make_node(AST_Null,orig,{value:null})}if(val instanceof RegExp){return make_node(AST_RegExp,orig,{value:val})}throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof val}))}}function maintain_this_binding(parent,orig,val){if(parent instanceof AST_UnaryPrefix&&parent.operator=="delete"||parent instanceof AST_Call&&parent.expression===orig&&(val instanceof AST_PropAccess||val instanceof AST_SymbolRef&&val.name=="eval")){return make_sequence(orig,[make_node(AST_Number,orig,{value:0}),val])}return val}function merge_sequence(array,node){if(node instanceof AST_Sequence){array.push.apply(array,node.expressions)}else{array.push(node)}return array}function as_statement_array(thing){if(thing===null)return[];if(thing instanceof AST_BlockStatement)return thing.body;if(thing instanceof AST_EmptyStatement)return[];if(thing instanceof AST_Statement)return[thing];throw new Error("Can't convert thing to statement array")}function is_empty(thing){if(thing===null)return true;if(thing instanceof AST_EmptyStatement)return true;if(thing instanceof AST_BlockStatement)return thing.body.length==0;return false}function loop_body(x){if(x instanceof AST_IterationStatement){return x.body instanceof AST_BlockStatement?x.body:x}return x}function is_iife_call(node){if(node.TYPE!="Call")return false;return node.expression instanceof AST_Function||is_iife_call(node.expression)}function is_undeclared_ref(node){return node instanceof AST_SymbolRef&&node.definition().undeclared}var global_names=makePredicate("Array Boolean clearInterval clearTimeout console Date decodeURI decodeURIComponent encodeURI encodeURIComponent Error escape eval EvalError Function isFinite isNaN JSON Math Number parseFloat parseInt RangeError ReferenceError RegExp Object setInterval setTimeout String SyntaxError TypeError unescape URIError");AST_SymbolRef.DEFMETHOD("is_declared",function(compressor){return!this.definition().undeclared||compressor.option("unsafe")&&global_names(this.name)});var identifier_atom=makePredicate("Infinity NaN undefined");function is_identifier_atom(node){return node instanceof AST_Infinity||node instanceof AST_NaN||node instanceof AST_Undefined}function tighten_body(statements,compressor){var scope=compressor.find_parent(AST_Scope);var CHANGED,max_iter=10;do{CHANGED=false;eliminate_spurious_blocks(statements);if(compressor.option("dead_code")){eliminate_dead_code(statements,compressor)}if(compressor.option("if_return")){handle_if_return(statements,compressor)}if(compressor.sequences_limit>0){sequencesize(statements,compressor);sequencesize_2(statements,compressor)}if(compressor.option("join_vars")){join_consecutive_vars(statements)}if(compressor.option("collapse_vars")){collapse(statements,compressor)}}while(CHANGED&&max_iter-- >0);function collapse(statements,compressor){if(scope.uses_eval||scope.uses_with)return statements;var args;var candidates=[];var in_try=compressor.self()instanceof AST_Try;var stat_index=statements.length;var scanner=new TreeTransformer(function(node,descend){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return handle_custom_scan_order(node);hit=true;stop_after=find_stop(node,0);if(stop_after===node)abort=true;return node}var parent=scanner.parent();if(node instanceof AST_Assign&&node.operator!="="&&lhs.equivalent_to(node.left)||node instanceof AST_Call&&lhs instanceof AST_PropAccess&&lhs.equivalent_to(node.expression)||node instanceof AST_Debugger||node instanceof AST_IterationStatement&&!(node instanceof AST_For)||node instanceof AST_LoopControl||node instanceof AST_Try||node instanceof AST_With||parent instanceof AST_For&&node!==parent.init||(side_effects||!replace_all)&&(node instanceof AST_SymbolRef&&!node.is_declared(compressor))){abort=true;return node}if(!stop_if_hit&&(side_effects||!replace_all)&&(parent instanceof AST_Binary&&lazy_op(parent.operator)&&parent.left!==node||parent instanceof AST_Conditional&&parent.condition!==node||parent instanceof AST_If&&parent.condition!==node)){stop_if_hit=parent}if(can_replace&&!(node instanceof AST_SymbolDeclaration)&&lhs.equivalent_to(node)){if(stop_if_hit){abort=true;return node}if(is_lhs(node,parent)){if(value_def)replaced++;return node}CHANGED=abort=true;replaced++;compressor.info("Collapsing {name} [{file}:{line},{col}]",{name:node.print_to_string(),file:node.start.file,line:node.start.line,col:node.start.col});if(candidate instanceof AST_UnaryPostfix){return make_node(AST_UnaryPrefix,candidate,candidate)}if(candidate instanceof AST_VarDef){if(value_def){abort=false;return node}var def=candidate.name.definition();var value=candidate.value;if(def.references.length-def.replaced==1&&!compressor.exposed(def)){def.replaced++;if(funarg&&is_identifier_atom(value)){return value.transform(compressor)}else{return maintain_this_binding(parent,node,value)}}return make_node(AST_Assign,candidate,{operator:"=",left:make_node(AST_SymbolRef,candidate.name,candidate.name),right:value})}candidate.write_only=false;return candidate}var sym;if(node instanceof AST_Call||node instanceof AST_Exit&&(side_effects||lhs instanceof AST_PropAccess||may_modify(lhs))||node instanceof AST_PropAccess&&(side_effects||node.expression.may_throw_on_access(compressor))||node instanceof AST_SymbolRef&&(lvalues[node.name]||side_effects&&may_modify(node))||node instanceof AST_VarDef&&node.value&&(node.name.name in lvalues||side_effects&&may_modify(node.name))||(sym=is_lhs(node.left,node))&&(sym instanceof AST_PropAccess||sym.name in lvalues)||may_throw&&(in_try?node.has_side_effects(compressor):side_effects_external(node))){stop_after=node;if(node instanceof AST_Scope)abort=true}return handle_custom_scan_order(node)},function(node){if(abort)return;if(stop_after===node)abort=true;if(stop_if_hit===node)stop_if_hit=null});var multi_replacer=new TreeTransformer(function(node){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return;hit=true;return node}if(node instanceof AST_SymbolRef&&node.name==def.name){if(!--replaced)abort=true;if(is_lhs(node,multi_replacer.parent()))return node;def.replaced++;value_def.replaced--;return candidate.value}if(node instanceof AST_Default||node instanceof AST_Scope)return node});while(--stat_index>=0){if(stat_index==0&&compressor.option("unused"))extract_args();var hit_stack=[];extract_candidates(statements[stat_index]);while(candidates.length>0){hit_stack=candidates.pop();var hit_index=0;var candidate=hit_stack[hit_stack.length-1];var value_def=null;var stop_after=null;var stop_if_hit=null;var lhs=get_lhs(candidate);if(!lhs||is_lhs_read_only(lhs)||lhs.has_side_effects(compressor))continue;var lvalues=get_lvalues(candidate);if(lhs instanceof AST_SymbolRef)lvalues[lhs.name]=false;var replace_all=value_def;if(!replace_all&&lhs instanceof AST_SymbolRef){var def=lhs.definition();if(def.references.length-def.replaced==(candidate instanceof AST_VarDef?1:2)){replace_all=true}}var side_effects=value_has_side_effects(candidate);var may_throw=candidate.may_throw(compressor);var funarg=candidate.name instanceof AST_SymbolFunarg;var hit=funarg;var abort=false,replaced=0,can_replace=!args||!hit;if(!can_replace){for(var j=compressor.self().argnames.lastIndexOf(candidate.name)+1;!abort&&j<args.length;j++){args[j].transform(scanner)}can_replace=true}for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(scanner)}if(value_def){var def=candidate.name.definition();if(abort&&def.references.length-def.replaced>replaced)replaced=false;else{abort=false;hit_index=0;hit=funarg;for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(multi_replacer)}value_def.single_use=false}}if(replaced&&!remove_candidate(candidate))statements.splice(stat_index,1)}}function handle_custom_scan_order(node){if(node instanceof AST_Scope)return node;if(node instanceof AST_Switch){node.expression=node.expression.transform(scanner);for(var i=0,len=node.body.length;!abort&&i<len;i++){var branch=node.body[i];if(branch instanceof AST_Case){if(!hit){if(branch!==hit_stack[hit_index])continue;hit_index++}branch.expression=branch.expression.transform(scanner);if(side_effects||!replace_all)break}}abort=true;return node}}function extract_args(){var iife,fn=compressor.self();if(fn instanceof AST_Function&&!fn.name&&!fn.uses_arguments&&!fn.uses_eval&&(iife=compressor.parent())instanceof AST_Call&&iife.expression===fn){var fn_strict=compressor.has_directive("use strict");if(fn_strict&&!member(fn_strict,fn.body))fn_strict=false;var len=fn.argnames.length;args=iife.args.slice(len);var names=Object.create(null);for(var i=len;--i>=0;){var sym=fn.argnames[i];var arg=iife.args[i];args.unshift(make_node(AST_VarDef,sym,{name:sym,value:arg}));if(sym.name in names)continue;names[sym.name]=true;if(!arg)arg=make_node(AST_Undefined,sym).transform(compressor);else{var tw=new TreeWalker(function(node){if(!arg)return true;if(node instanceof AST_SymbolRef&&fn.variables.has(node.name)){var s=node.definition().scope;if(s!==scope)while(s=s.parent_scope){if(s===scope)return true}arg=null}if(node instanceof AST_This&&(fn_strict||!tw.find_parent(AST_Scope))){arg=null;return true}});arg.walk(tw)}if(arg)candidates.unshift([make_node(AST_VarDef,sym,{name:sym,value:arg})])}}}function extract_candidates(expr){hit_stack.push(expr);if(expr instanceof AST_Assign){if(!expr.left.has_side_effects(compressor)){candidates.push(hit_stack.slice())}extract_candidates(expr.right)}else if(expr instanceof AST_Binary){extract_candidates(expr.left);extract_candidates(expr.right)}else if(expr instanceof AST_Call){extract_candidates(expr.expression);expr.args.forEach(extract_candidates)}else if(expr instanceof AST_Case){extract_candidates(expr.expression)}else if(expr instanceof AST_Conditional){extract_candidates(expr.condition);extract_candidates(expr.consequent);extract_candidates(expr.alternative)}else if(expr instanceof AST_Definitions){expr.definitions.forEach(extract_candidates)}else if(expr instanceof AST_DWLoop){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_Exit){if(expr.value)extract_candidates(expr.value)}else if(expr instanceof AST_For){if(expr.init)extract_candidates(expr.init);if(expr.condition)extract_candidates(expr.condition);if(expr.step)extract_candidates(expr.step);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_ForIn){extract_candidates(expr.object);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_If){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}if(expr.alternative&&!(expr.alternative instanceof AST_Block)){extract_candidates(expr.alternative)}}else if(expr instanceof AST_Sequence){expr.expressions.forEach(extract_candidates)}else if(expr instanceof AST_SimpleStatement){extract_candidates(expr.body)}else if(expr instanceof AST_Switch){extract_candidates(expr.expression);expr.body.forEach(extract_candidates)}else if(expr instanceof AST_Unary){if(expr.operator=="++"||expr.operator=="--"){candidates.push(hit_stack.slice())}}else if(expr instanceof AST_VarDef){if(expr.value){candidates.push(hit_stack.slice());extract_candidates(expr.value)}}hit_stack.pop()}function find_stop(node,level,write_only){var parent=scanner.parent(level);if(parent instanceof AST_Assign){if(write_only&&!(parent.left instanceof AST_PropAccess||parent.left.name in lvalues)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Binary){if(write_only&&(!lazy_op(parent.operator)||parent.left===node)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Call)return node;if(parent instanceof AST_Case)return node;if(parent instanceof AST_Conditional){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Definitions){return find_stop(parent,level+1,true)}if(parent instanceof AST_Exit){return write_only?find_stop(parent,level+1,write_only):node}if(parent instanceof AST_If){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_IterationStatement)return node;if(parent instanceof AST_Sequence){return find_stop(parent,level+1,parent.tail_node()!==node)}if(parent instanceof AST_SimpleStatement){return find_stop(parent,level+1,true)}if(parent instanceof AST_Switch)return node;if(parent instanceof AST_VarDef)return node;return null}function mangleable_var(var_def){var value=var_def.value;if(!(value instanceof AST_SymbolRef))return;if(value.name=="arguments")return;var def=value.definition();if(def.undeclared)return;return value_def=def}function get_lhs(expr){if(expr instanceof AST_VarDef){var def=expr.name.definition();if(!member(expr.name,def.orig))return;var declared=def.orig.length-def.eliminated;var referenced=def.references.length-def.replaced;if(declared>1&&!(expr.name instanceof AST_SymbolFunarg)||(referenced>1?mangleable_var(expr):!compressor.exposed(def))){return make_node(AST_SymbolRef,expr.name,expr.name)}}else{return expr[expr instanceof AST_Assign?"left":"expression"]}}function get_rvalue(expr){return expr[expr instanceof AST_Assign?"right":"value"]}function get_lvalues(expr){var lvalues=Object.create(null);if(expr instanceof AST_Unary)return lvalues;var tw=new TreeWalker(function(node,descend){var sym=node;while(sym instanceof AST_PropAccess)sym=sym.expression;if(sym instanceof AST_SymbolRef||sym instanceof AST_This){lvalues[sym.name]=lvalues[sym.name]||is_lhs(node,tw.parent())}});get_rvalue(expr).walk(tw);return lvalues}function remove_candidate(expr){if(expr.name instanceof AST_SymbolFunarg){var index=compressor.self().argnames.indexOf(expr.name);var args=compressor.parent().args;if(args[index])args[index]=make_node(AST_Number,args[index],{value:0});return true}var found=false;return statements[stat_index].transform(new TreeTransformer(function(node,descend,in_list){if(found)return node;if(node===expr||node.body===expr){found=true;if(node instanceof AST_VarDef){node.value=null;return node}return in_list?MAP.skip:null}},function(node){if(node instanceof AST_Sequence)switch(node.expressions.length){case 0:return null;case 1:return node.expressions[0]}}))}function value_has_side_effects(expr){if(expr instanceof AST_Unary)return false;return get_rvalue(expr).has_side_effects(compressor)}function may_modify(sym){var def=sym.definition();if(def.orig.length==1&&def.orig[0]instanceof AST_SymbolDefun)return false;if(def.scope!==scope)return true;return!all(def.references,function(ref){return ref.scope===scope})}function side_effects_external(node,lhs){if(node instanceof AST_Assign)return side_effects_external(node.left,true);if(node instanceof AST_Unary)return side_effects_external(node.expression,true);if(node instanceof AST_VarDef)return node.value&&side_effects_external(node.value);if(lhs){if(node instanceof AST_Dot)return side_effects_external(node.expression,true);if(node instanceof AST_Sub)return side_effects_external(node.expression,true);if(node instanceof AST_SymbolRef)return node.definition().scope!==scope}return false}}function eliminate_spurious_blocks(statements){var seen_dirs=[];for(var i=0;i<statements.length;){var stat=statements[i];if(stat instanceof AST_BlockStatement){CHANGED=true;eliminate_spurious_blocks(stat.body);[].splice.apply(statements,[i,1].concat(stat.body));i+=stat.body.length}else if(stat instanceof AST_EmptyStatement){CHANGED=true;statements.splice(i,1)}else if(stat instanceof AST_Directive){if(seen_dirs.indexOf(stat.value)<0){i++;seen_dirs.push(stat.value)}else{CHANGED=true;statements.splice(i,1)}}else i++}}function handle_if_return(statements,compressor){var self=compressor.self();var multiple_if_returns=has_multiple_if_returns(statements);var in_lambda=self instanceof AST_Lambda;for(var i=statements.length;--i>=0;){var stat=statements[i];var j=next_index(i);var next=statements[j];if(in_lambda&&!next&&stat instanceof AST_Return){if(!stat.value){CHANGED=true;statements.splice(i,1);continue}if(stat.value instanceof AST_UnaryPrefix&&stat.value.operator=="void"){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat,{body:stat.value.expression});continue}}if(stat instanceof AST_If){var ab=aborts(stat.body);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.condition=stat.condition.negate(compressor);var body=as_statement_array_with_return(stat.body,ab);stat.body=make_node(AST_BlockStatement,stat,{body:as_statement_array(stat.alternative).concat(extract_functions())});stat.alternative=make_node(AST_BlockStatement,stat,{body:body});statements[i]=stat.transform(compressor);continue}var ab=aborts(stat.alternative);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.body=make_node(AST_BlockStatement,stat.body,{body:as_statement_array(stat.body).concat(extract_functions())});var body=as_statement_array_with_return(stat.alternative,ab);stat.alternative=make_node(AST_BlockStatement,stat.alternative,{body:body});statements[i]=stat.transform(compressor);continue}}if(stat instanceof AST_If&&stat.body instanceof AST_Return){var value=stat.body.value;if(!value&&!stat.alternative&&(in_lambda&&!next||next instanceof AST_Return&&!next.value)){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat.condition,{body:stat.condition});continue}if(value&&!stat.alternative&&next instanceof AST_Return&&next.value){CHANGED=true;stat=stat.clone();stat.alternative=next;statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}if(value&&!stat.alternative&&(!next&&in_lambda&&multiple_if_returns||next instanceof AST_Return)){CHANGED=true;stat=stat.clone();stat.alternative=next||make_node(AST_Return,stat,{value:null});statements.splice(i,1,stat.transform(compressor));if(next)statements.splice(j,1);continue}var prev=statements[prev_index(i)];if(compressor.option("sequences")&&in_lambda&&!stat.alternative&&prev instanceof AST_If&&prev.body instanceof AST_Return&&next_index(j)==statements.length&&next instanceof AST_SimpleStatement){CHANGED=true;stat=stat.clone();stat.alternative=make_node(AST_BlockStatement,next,{body:[next,make_node(AST_Return,next,{value:null})]});statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}}}function has_multiple_if_returns(statements){var n=0;for(var i=statements.length;--i>=0;){var stat=statements[i];if(stat instanceof AST_If&&stat.body instanceof AST_Return){if(++n>1)return true}}return false}function is_return_void(value){return!value||value instanceof AST_UnaryPrefix&&value.operator=="void"}function can_merge_flow(ab){if(!ab)return false;var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab):null;return ab instanceof AST_Return&&in_lambda&&is_return_void(ab.value)||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct}function extract_functions(){var tail=statements.slice(i+1);statements.length=i+1;return tail.filter(function(stat){if(stat instanceof AST_Defun){statements.push(stat);return false}return true})}function as_statement_array_with_return(node,ab){var body=as_statement_array(node).slice(0,-1);if(ab.value){body.push(make_node(AST_SimpleStatement,ab.value,{body:ab.value.expression}))}return body}function next_index(i){for(var j=i+1,len=statements.length;j<len;j++){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}function prev_index(i){for(var j=i;--j>=0;){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}}function eliminate_dead_code(statements,compressor){var has_quit;var self=compressor.self();for(var i=0,n=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_LoopControl){var lct=compressor.loopcontrol_target(stat);if(stat instanceof AST_Break&&!(lct instanceof AST_IterationStatement)&&loop_body(lct)===self||stat instanceof AST_Continue&&loop_body(lct)===self){if(stat.label){remove(stat.label.thedef.references,stat)}}else{statements[n++]=stat}}else{statements[n++]=stat}if(aborts(stat)){has_quit=statements.slice(i+1);break}}statements.length=n;CHANGED=n!=len;if(has_quit)has_quit.forEach(function(stat){extract_declarations_from_unreachable_code(compressor,stat,statements)})}function declarations_only(node){return all(node.definitions,function(var_def){return!var_def.value})}function sequencesize(statements,compressor){if(statements.length<2)return;var seq=[],n=0;function push_seq(){if(!seq.length)return;var body=make_sequence(seq[0],seq);statements[n++]=make_node(AST_SimpleStatement,body,{body:body});seq=[]}for(var i=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_SimpleStatement){if(seq.length>=compressor.sequences_limit)push_seq();var body=stat.body;if(seq.length>0)body=body.drop_side_effect_free(compressor);if(body)merge_sequence(seq,body)}else if(stat instanceof AST_Definitions&&declarations_only(stat)||stat instanceof AST_Defun){statements[n++]=stat}else{push_seq();statements[n++]=stat}}push_seq();statements.length=n;if(n!=len)CHANGED=true}function to_simple_statement(block,decls){if(!(block instanceof AST_BlockStatement))return block;var stat=null;for(var i=0,len=block.body.length;i<len;i++){var line=block.body[i];if(line instanceof AST_Var&&declarations_only(line)){decls.push(line)}else if(stat){return false}else{stat=line}}return stat}function sequencesize_2(statements,compressor){function cons_seq(right){n--;CHANGED=true;var left=prev.body;return make_sequence(left,[left,right]).transform(compressor)}var n=0,prev;for(var i=0;i<statements.length;i++){var stat=statements[i];if(prev){if(stat instanceof AST_Exit){stat.value=cons_seq(stat.value||make_node(AST_Undefined,stat).transform(compressor))}else if(stat instanceof AST_For){if(!(stat.init instanceof AST_Definitions)){var abort=false;prev.body.walk(new TreeWalker(function(node){if(abort||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){abort=true;return true}}));if(!abort){if(stat.init)stat.init=cons_seq(stat.init);else{stat.init=prev.body;n--;CHANGED=true}}}}else if(stat instanceof AST_ForIn){stat.object=cons_seq(stat.object)}else if(stat instanceof AST_If){stat.condition=cons_seq(stat.condition)}else if(stat instanceof AST_Switch){stat.expression=cons_seq(stat.expression)}else if(stat instanceof AST_With){stat.expression=cons_seq(stat.expression)}}if(compressor.option("conditionals")&&stat instanceof AST_If){var decls=[];var body=to_simple_statement(stat.body,decls);var alt=to_simple_statement(stat.alternative,decls);if(body!==false&&alt!==false&&decls.length>0){var len=decls.length;decls.push(make_node(AST_If,stat,{condition:stat.condition,body:body||make_node(AST_EmptyStatement,stat.body),alternative:alt}));decls.unshift(n,1);[].splice.apply(statements,decls);i+=len;n+=len+1;prev=null;CHANGED=true;continue}}statements[n++]=stat;prev=stat instanceof AST_SimpleStatement?stat:null}statements.length=n}function join_object_assignments(defn,body){if(!(defn instanceof AST_Definitions))return;var def=defn.definitions[defn.definitions.length-1];if(!(def.value instanceof AST_Object))return;var exprs;if(body instanceof AST_Assign){exprs=[body]}else if(body instanceof AST_Sequence){exprs=body.expressions.slice()}if(!exprs)return;var trimmed=false;do{var node=exprs[0];if(!(node instanceof AST_Assign))break;if(node.operator!="=")break;if(!(node.left instanceof AST_PropAccess))break;var sym=node.left.expression;if(!(sym instanceof AST_SymbolRef))break;if(def.name.name!=sym.name)break;if(!node.right.is_constant_expression(scope))break;var prop=node.left.property;if(prop instanceof AST_Node){prop=prop.evaluate(compressor)}if(prop instanceof AST_Node)break;prop=""+prop;if(compressor.has_directive("use strict")){if(!all(def.value.properties,function(node){return node.key!=prop&&node.key.name!=prop}))break}def.value.properties.push(make_node(AST_ObjectKeyVal,node,{key:prop,value:node.right}));exprs.shift();trimmed=true}while(exprs.length);return trimmed&&exprs}function join_consecutive_vars(statements){var defs;for(var i=0,j=-1,len=statements.length;i<len;i++){var stat=statements[i];var prev=statements[j];if(stat instanceof AST_Definitions){if(prev&&prev.TYPE==stat.TYPE){prev.definitions=prev.definitions.concat(stat.definitions);CHANGED=true}else if(defs&&defs.TYPE==stat.TYPE&&declarations_only(stat)){defs.definitions=defs.definitions.concat(stat.definitions);CHANGED=true}else{statements[++j]=stat;defs=stat}}else if(stat instanceof AST_Exit){stat.value=extract_object_assignments(stat.value)}else if(stat instanceof AST_For){var exprs=join_object_assignments(prev,stat.init);if(exprs){CHANGED=true;stat.init=exprs.length?make_sequence(stat.init,exprs):null;statements[++j]=stat}else if(prev instanceof AST_Var&&(!stat.init||stat.init.TYPE==prev.TYPE)){if(stat.init){prev.definitions=prev.definitions.concat(stat.init.definitions)}stat.init=prev;statements[j]=stat;CHANGED=true}else if(defs&&stat.init&&defs.TYPE==stat.init.TYPE&&declarations_only(stat.init)){defs.definitions=defs.definitions.concat(stat.init.definitions);stat.init=null;statements[++j]=stat;CHANGED=true}else{statements[++j]=stat}}else if(stat instanceof AST_ForIn){stat.object=extract_object_assignments(stat.object)}else if(stat instanceof AST_If){stat.condition=extract_object_assignments(stat.condition)}else if(stat instanceof AST_SimpleStatement){var exprs=join_object_assignments(prev,stat.body);if(exprs){CHANGED=true;if(!exprs.length)continue;stat.body=make_sequence(stat.body,exprs)}statements[++j]=stat}else if(stat instanceof AST_Switch){stat.expression=extract_object_assignments(stat.expression)}else if(stat instanceof AST_With){stat.expression=extract_object_assignments(stat.expression)}else{statements[++j]=stat}}statements.length=j+1;function extract_object_assignments(value){statements[++j]=stat;var exprs=join_object_assignments(prev,value);if(exprs){CHANGED=true;if(exprs.length){return make_sequence(value,exprs)}else if(value instanceof AST_Sequence){return value.tail_node().left}else{return value.left}}return value}}}function extract_declarations_from_unreachable_code(compressor,stat,target){if(!(stat instanceof AST_Defun)){compressor.warn("Dropping unreachable code [{file}:{line},{col}]",stat.start)}stat.walk(new TreeWalker(function(node){if(node instanceof AST_Definitions){compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]",node.start);node.remove_initializers();target.push(node);return true}if(node instanceof AST_Defun){target.push(node);return true}if(node instanceof AST_Scope){return true}}))}function get_value(key){if(key instanceof AST_Constant){return key.getValue()}if(key instanceof AST_UnaryPrefix&&key.operator=="void"&&key.expression instanceof AST_Constant){return}return key}function is_undefined(node,compressor){return node.is_undefined||node instanceof AST_Undefined||node instanceof AST_UnaryPrefix&&node.operator=="void"&&!node.expression.has_side_effects(compressor)}(function(def){AST_Node.DEFMETHOD("may_throw_on_access",function(compressor){return!compressor.option("pure_getters")||this._dot_throw(compressor)});function is_strict(compressor){return/strict/.test(compressor.option("pure_getters"))}def(AST_Node,is_strict);def(AST_Null,return_true);def(AST_Undefined,return_true);def(AST_Constant,return_false);def(AST_Array,return_false);def(AST_Object,function(compressor){if(!is_strict(compressor))return false;for(var i=this.properties.length;--i>=0;)if(this.properties[i].value instanceof AST_Accessor)return true;return false});def(AST_Function,return_false);def(AST_UnaryPostfix,return_false);def(AST_UnaryPrefix,function(){return this.operator=="void"});def(AST_Binary,function(compressor){return(this.operator=="&&"||this.operator=="||")&&(this.left._dot_throw(compressor)||this.right._dot_throw(compressor))});def(AST_Assign,function(compressor){return this.operator=="="&&this.right._dot_throw(compressor)});def(AST_Conditional,function(compressor){return this.consequent._dot_throw(compressor)||this.alternative._dot_throw(compressor)});def(AST_Dot,function(compressor){if(!is_strict(compressor))return false;if(this.expression instanceof AST_Function&&this.property=="prototype")return false;return true});def(AST_Sequence,function(compressor){return this.tail_node()._dot_throw(compressor)});def(AST_SymbolRef,function(compressor){if(this.is_undefined)return true;if(!is_strict(compressor))return false;if(is_undeclared_ref(this)&&this.is_declared(compressor))return false;if(this.is_immutable())return false;var fixed=this.fixed_value();return!fixed||fixed._dot_throw(compressor)})})(function(node,func){node.DEFMETHOD("_dot_throw",func)});(function(def){var unary_bool=["!","delete"];var binary_bool=["in","instanceof","==","!=","===","!==","<","<=",">=",">"];def(AST_Node,return_false);def(AST_UnaryPrefix,function(){return member(this.operator,unary_bool)});def(AST_Binary,function(){return member(this.operator,binary_bool)||lazy_op(this.operator)&&this.left.is_boolean()&&this.right.is_boolean()});def(AST_Conditional,function(){return this.consequent.is_boolean()&&this.alternative.is_boolean()});def(AST_Assign,function(){return this.operator=="="&&this.right.is_boolean()});def(AST_Sequence,function(){return this.tail_node().is_boolean()});def(AST_True,return_true);def(AST_False,return_true)})(function(node,func){node.DEFMETHOD("is_boolean",func)});(function(def){def(AST_Node,return_false);def(AST_Number,return_true);var unary=makePredicate("+ - ~ ++ --");def(AST_Unary,function(){return unary(this.operator)});var binary=makePredicate("- * / % & | ^ << >> >>>");def(AST_Binary,function(compressor){return binary(this.operator)||this.operator=="+"&&this.left.is_number(compressor)&&this.right.is_number(compressor)});def(AST_Assign,function(compressor){return binary(this.operator.slice(0,-1))||this.operator=="="&&this.right.is_number(compressor)});def(AST_Sequence,function(compressor){return this.tail_node().is_number(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_number(compressor)&&this.alternative.is_number(compressor)})})(function(node,func){node.DEFMETHOD("is_number",func)});(function(def){def(AST_Node,return_false);def(AST_String,return_true);def(AST_UnaryPrefix,function(){return this.operator=="typeof"});def(AST_Binary,function(compressor){return this.operator=="+"&&(this.left.is_string(compressor)||this.right.is_string(compressor))});def(AST_Assign,function(compressor){return(this.operator=="="||this.operator=="+=")&&this.right.is_string(compressor)});def(AST_Sequence,function(compressor){return this.tail_node().is_string(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_string(compressor)&&this.alternative.is_string(compressor)})})(function(node,func){node.DEFMETHOD("is_string",func)});var lazy_op=makePredicate("&& ||");var unary_side_effects=makePredicate("delete ++ --");function is_lhs(node,parent){if(parent instanceof AST_Unary&&unary_side_effects(parent.operator))return parent.expression;if(parent instanceof AST_Assign&&parent.left===node)return node}(function(def){AST_Node.DEFMETHOD("resolve_defines",function(compressor){if(!compressor.option("global_defs"))return;var def=this._find_defs(compressor,"");if(def){var node,parent=this,level=0;do{node=parent;parent=compressor.parent(level++)}while(parent instanceof AST_PropAccess&&parent.expression===node);if(is_lhs(node,parent)){compressor.warn("global_defs "+this.print_to_string()+" redefined [{file}:{line},{col}]",this.start)}else{return def}}});function to_node(value,orig){if(value instanceof AST_Node)return make_node(value.CTOR,orig,value);if(Array.isArray(value))return make_node(AST_Array,orig,{elements:value.map(function(value){return to_node(value,orig)})});if(value&&typeof value=="object"){var props=[];for(var key in value)if(HOP(value,key)){props.push(make_node(AST_ObjectKeyVal,orig,{key:key,value:to_node(value[key],orig)}))}return make_node(AST_Object,orig,{properties:props})}return make_node_from_constant(value,orig)}def(AST_Node,noop);def(AST_Dot,function(compressor,suffix){return this.expression._find_defs(compressor,"."+this.property+suffix)});def(AST_SymbolRef,function(compressor,suffix){if(!this.global())return;var name;var defines=compressor.option("global_defs");if(defines&&HOP(defines,name=this.name+suffix)){var node=to_node(defines[name],this);var top=compressor.find_parent(AST_Toplevel);node.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef){node.scope=top;node.thedef=top.def_global(node)}}));return node}})})(function(node,func){node.DEFMETHOD("_find_defs",func)});function best_of_expression(ast1,ast2){return ast1.print_to_string().length>ast2.print_to_string().length?ast2:ast1}function best_of_statement(ast1,ast2){return best_of_expression(make_node(AST_SimpleStatement,ast1,{body:ast1}),make_node(AST_SimpleStatement,ast2,{body:ast2})).body}function best_of(compressor,ast1,ast2){return(first_in_statement(compressor)?best_of_statement:best_of_expression)(ast1,ast2)}function convert_to_predicate(obj){for(var key in obj){obj[key]=makePredicate(obj[key])}}var object_fns=["constructor","toString","valueOf"];var native_fns={Array:["indexOf","join","lastIndexOf","slice"].concat(object_fns),Boolean:object_fns,Number:["toExponential","toFixed","toPrecision"].concat(object_fns),Object:object_fns,RegExp:["test"].concat(object_fns),String:["charAt","charCodeAt","concat","indexOf","italics","lastIndexOf","match","replace","search","slice","split","substr","substring","toLowerCase","toUpperCase","trim"].concat(object_fns)};convert_to_predicate(native_fns);var static_fns={Array:["isArray"],Math:["abs","acos","asin","atan","ceil","cos","exp","floor","log","round","sin","sqrt","tan","atan2","pow","max","min"],Number:["isFinite","isNaN"],Object:["create","getOwnPropertyDescriptor","getOwnPropertyNames","getPrototypeOf","isExtensible","isFrozen","isSealed","keys"],String:["fromCharCode"]};convert_to_predicate(static_fns);(function(def){AST_Node.DEFMETHOD("evaluate",function(compressor){if(!compressor.option("evaluate"))return this;var val=this._eval(compressor,1);return!val||val instanceof RegExp||typeof val!="object"?val:this});var unaryPrefix=makePredicate("! ~ - + void");AST_Node.DEFMETHOD("is_constant",function(){if(this instanceof AST_Constant){return!(this instanceof AST_RegExp)}else{return this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant&&unaryPrefix(this.operator)}});def(AST_Statement,function(){throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]",this.start))});def(AST_Lambda,return_this);def(AST_Node,return_this);def(AST_Constant,function(){return this.getValue()});def(AST_Array,function(compressor,depth){if(compressor.option("unsafe")){var elements=[];for(var i=0,len=this.elements.length;i<len;i++){var element=this.elements[i];if(element instanceof AST_Function){elements.push(element);continue}var value=element._eval(compressor,depth);if(element===value)return this;elements.push(value)}return elements}return this});def(AST_Object,function(compressor,depth){if(compressor.option("unsafe")){var val={};for(var i=0,len=this.properties.length;i<len;i++){var prop=this.properties[i];var key=prop.key;if(key instanceof AST_Symbol){key=key.name}else if(key instanceof AST_Node){key=key._eval(compressor,depth);if(key===prop.key)return this}if(typeof Object.prototype[key]==="function"){return this}if(prop.value instanceof AST_Function)continue;val[key]=prop.value._eval(compressor,depth);if(val[key]===prop.value)return this}return val}return this});def(AST_UnaryPrefix,function(compressor,depth){var e=this.expression;if(compressor.option("typeofs")&&this.operator=="typeof"&&(e instanceof AST_Lambda||e instanceof AST_SymbolRef&&e.fixed_value()instanceof AST_Lambda)){return typeof function(){}}e=e._eval(compressor,depth);if(e===this.expression)return this;switch(this.operator){case"!":return!e;case"typeof":if(e instanceof RegExp)return this;return typeof e;case"void":return void e;case"~":return~e;case"-":return-e;case"+":return+e}return this});def(AST_Binary,function(compressor,depth){var left=this.left._eval(compressor,depth);if(left===this.left)return this;var right=this.right._eval(compressor,depth);if(right===this.right)return this;var result;switch(this.operator){case"&&":result=left&&right;break;case"||":result=left||right;break;case"|":result=left|right;break;case"&":result=left&right;break;case"^":result=left^right;break;case"+":result=left+right;break;case"*":result=left*right;break;case"/":result=left/right;break;case"%":result=left%right;break;case"-":result=left-right;break;case"<<":result=left<<right;break;case">>":result=left>>right;break;case">>>":result=left>>>right;break;case"==":result=left==right;break;case"===":result=left===right;break;case"!=":result=left!=right;break;case"!==":result=left!==right;break;case"<":result=left<right;break;case"<=":result=left<=right;break;case">":result=left>right;break;case">=":result=left>=right;break;default:return this}if(isNaN(result)&&compressor.find_parent(AST_With)){return this}return result});def(AST_Conditional,function(compressor,depth){var condition=this.condition._eval(compressor,depth);if(condition===this.condition)return this;var node=condition?this.consequent:this.alternative;var value=node._eval(compressor,depth);return value===node?this:value});def(AST_SymbolRef,function(compressor,depth){var fixed=this.fixed_value();if(!fixed)return this;var value;if(HOP(fixed,"_eval")){value=fixed._eval()}else{this._eval=return_this;value=fixed._eval(compressor,depth);delete this._eval;if(value===fixed)return this;fixed._eval=function(){return value}}if(value&&typeof value=="object"){var escaped=this.definition().escaped;if(escaped&&depth>escaped)return this}return value});var global_objs={Array:Array,Math:Math,Number:Number,Object:Object,String:String};var static_values={Math:["E","LN10","LN2","LOG2E","LOG10E","PI","SQRT1_2","SQRT2"],Number:["MAX_VALUE","MIN_VALUE","NaN","NEGATIVE_INFINITY","POSITIVE_INFINITY"]};convert_to_predicate(static_values);def(AST_PropAccess,function(compressor,depth){if(compressor.option("unsafe")){var key=this.property;if(key instanceof AST_Node){key=key._eval(compressor,depth);if(key===this.property)return this}var exp=this.expression;var val;if(is_undeclared_ref(exp)){if(!(static_values[exp.name]||return_false)(key))return this;val=global_objs[exp.name]}else{val=exp._eval(compressor,depth+1);if(!val||val===exp||!HOP(val,key))return this}return val[key]}return this});def(AST_Call,function(compressor,depth){var exp=this.expression;if(compressor.option("unsafe")&&exp instanceof AST_PropAccess){var key=exp.property;if(key instanceof AST_Node){key=key._eval(compressor,depth);if(key===exp.property)return this}var val;var e=exp.expression;if(is_undeclared_ref(e)){if(!(static_fns[e.name]||return_false)(key))return this;val=global_objs[e.name]}else{val=e._eval(compressor,depth+1);if(val===e||!(val&&native_fns[val.constructor.name]||return_false)(key))return this}var args=[];for(var i=0,len=this.args.length;i<len;i++){var arg=this.args[i];var value=arg._eval(compressor,depth);if(arg===value)return this;args.push(value)}try{return val[key].apply(val,args)}catch(ex){compressor.warn("Error evaluating {code} [{file}:{line},{col}]",{code:this.print_to_string(),file:this.start.file,line:this.start.line,col:this.start.col})}}return this});def(AST_New,return_this)})(function(node,func){node.DEFMETHOD("_eval",func)});(function(def){function basic_negation(exp){return make_node(AST_UnaryPrefix,exp,{operator:"!",expression:exp})}function best(orig,alt,first_in_statement){var negated=basic_negation(orig);if(first_in_statement){var stat=make_node(AST_SimpleStatement,alt,{body:alt});return best_of_expression(negated,stat)===stat?alt:negated}return best_of_expression(negated,alt)}def(AST_Node,function(){return basic_negation(this)});def(AST_Statement,function(){throw new Error("Cannot negate a statement")});def(AST_Function,function(){return basic_negation(this)});def(AST_UnaryPrefix,function(){if(this.operator=="!")return this.expression;return basic_negation(this)});def(AST_Sequence,function(compressor){var expressions=this.expressions.slice();expressions.push(expressions.pop().negate(compressor));return make_sequence(this,expressions)});def(AST_Conditional,function(compressor,first_in_statement){var self=this.clone();self.consequent=self.consequent.negate(compressor);self.alternative=self.alternative.negate(compressor);return best(this,self,first_in_statement)});def(AST_Binary,function(compressor,first_in_statement){var self=this.clone(),op=this.operator;if(compressor.option("unsafe_comps")){switch(op){case"<=":self.operator=">";return self;case"<":self.operator=">=";return self;case">=":self.operator="<";return self;case">":self.operator="<=";return self}}switch(op){case"==":self.operator="!=";return self;case"!=":self.operator="==";return self;case"===":self.operator="!==";return self;case"!==":self.operator="===";return self;case"&&":self.operator="||";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement);case"||":self.operator="&&";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement)}return basic_negation(this)})})(function(node,func){node.DEFMETHOD("negate",function(compressor,first_in_statement){return func.call(this,compressor,first_in_statement)})});var global_pure_fns=makePredicate("Boolean decodeURI decodeURIComponent Date encodeURI encodeURIComponent Error escape EvalError isFinite isNaN Number Object parseFloat parseInt RangeError ReferenceError String SyntaxError TypeError unescape URIError");AST_Call.DEFMETHOD("is_expr_pure",function(compressor){if(compressor.option("unsafe")){var expr=this.expression;if(is_undeclared_ref(expr)&&global_pure_fns(expr.name))return true;if(expr instanceof AST_Dot&&is_undeclared_ref(expr.expression)&&(static_fns[expr.expression.name]||return_false)(expr.property)){return true}}return this.pure||!compressor.pure_funcs(this)});AST_Node.DEFMETHOD("is_call_pure",return_false);AST_Dot.DEFMETHOD("is_call_pure",function(compressor){if(!compressor.option("unsafe"))return;var expr=this.expression;var fns=return_false;if(expr instanceof AST_Array){fns=native_fns.Array}else if(expr.is_boolean()){fns=native_fns.Boolean}else if(expr.is_number(compressor)){fns=native_fns.Number}else if(expr instanceof AST_RegExp){fns=native_fns.RegExp}else if(expr.is_string(compressor)){fns=native_fns.String}else if(!this.may_throw_on_access(compressor)){fns=native_fns.Object}return fns(this.property)});(function(def){def(AST_Node,return_true);def(AST_EmptyStatement,return_false);def(AST_Constant,return_false);def(AST_This,return_false);function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].has_side_effects(compressor))return true;return false}def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(!this.is_expr_pure(compressor)&&(!this.expression.is_call_pure(compressor)||this.expression.has_side_effects(compressor))){return true}return any(this.args,compressor)});def(AST_Switch,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_Case,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_Try,function(compressor){return any(this.body,compressor)||this.bcatch&&this.bcatch.has_side_effects(compressor)||this.bfinally&&this.bfinally.has_side_effects(compressor)});def(AST_If,function(compressor){return this.condition.has_side_effects(compressor)||this.body&&this.body.has_side_effects(compressor)||this.alternative&&this.alternative.has_side_effects(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_SimpleStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_Lambda,return_false);def(AST_Binary,function(compressor){return this.left.has_side_effects(compressor)||this.right.has_side_effects(compressor)});def(AST_Assign,return_true);def(AST_Conditional,function(compressor){return this.condition.has_side_effects(compressor)||this.consequent.has_side_effects(compressor)||this.alternative.has_side_effects(compressor)});def(AST_Unary,function(compressor){return unary_side_effects(this.operator)||this.expression.has_side_effects(compressor)});def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_SymbolDeclaration,return_false);def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.has_side_effects(compressor)});def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)||this.property.has_side_effects(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_VarDef,function(compressor){return this.value})})(function(node,func){node.DEFMETHOD("has_side_effects",func)});(function(def){def(AST_Node,return_true);def(AST_Constant,return_false);def(AST_EmptyStatement,return_false);def(AST_Lambda,return_false);def(AST_SymbolDeclaration,return_false);def(AST_This,return_false);function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].may_throw(compressor))return true;return false}def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Assign,function(compressor){if(this.right.may_throw(compressor))return true;if(!compressor.has_directive("use strict")&&this.operator=="="&&this.left instanceof AST_SymbolRef){return false}return this.left.may_throw(compressor)});def(AST_Binary,function(compressor){return this.left.may_throw(compressor)||this.right.may_throw(compressor)});def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(any(this.args,compressor))return true;if(this.is_expr_pure(compressor))return false;if(this.expression.may_throw(compressor))return true;return!(this.expression instanceof AST_Lambda)||any(this.expression.body,compressor)});def(AST_Case,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_Conditional,function(compressor){return this.condition.may_throw(compressor)||this.consequent.may_throw(compressor)||this.alternative.may_throw(compressor)});def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)});def(AST_If,function(compressor){return this.condition.may_throw(compressor)||this.body&&this.body.may_throw(compressor)||this.alternative&&this.alternative.may_throw(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.may_throw(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_SimpleStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)||this.property.may_throw(compressor)});def(AST_Switch,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_Try,function(compressor){return any(this.body,compressor)||this.bcatch&&this.bcatch.may_throw(compressor)||this.bfinally&&this.bfinally.may_throw(compressor)});def(AST_Unary,function(compressor){if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return false;return this.expression.may_throw(compressor)});def(AST_VarDef,function(compressor){if(!this.value)return false;return this.value.may_throw(compressor)})})(function(node,func){node.DEFMETHOD("may_throw",func)});(function(def){function all(list){for(var i=list.length;--i>=0;)if(!list[i].is_constant_expression())return false;return true}def(AST_Node,return_false);def(AST_Constant,return_true);def(AST_Lambda,function(scope){var self=this;var result=true;self.walk(new TreeWalker(function(node){if(!result)return true;if(node instanceof AST_SymbolRef){if(self.inlined){result=false;return true}var def=node.definition();if(member(def,self.enclosed)&&!self.variables.has(def.name)){if(scope){var scope_def=scope.find_variable(node);if(def.undeclared?!scope_def:scope_def===def){result="f";return true}}result=false}return true}}));return result});def(AST_Unary,function(){return this.expression.is_constant_expression()});def(AST_Binary,function(){return this.left.is_constant_expression()&&this.right.is_constant_expression()});def(AST_Array,function(){return all(this.elements)});def(AST_Object,function(){return all(this.properties)});def(AST_ObjectProperty,function(){return this.value.is_constant_expression()})})(function(node,func){node.DEFMETHOD("is_constant_expression",func)});function aborts(thing){return thing&&thing.aborts()}(function(def){def(AST_Statement,return_null);def(AST_Jump,return_this);function block_aborts(){var n=this.body.length;return n>0&&aborts(this.body[n-1])}def(AST_BlockStatement,block_aborts);def(AST_SwitchBranch,block_aborts);def(AST_If,function(){return this.alternative&&aborts(this.body)&&aborts(this.alternative)&&this})})(function(node,func){node.DEFMETHOD("aborts",func)});OPT(AST_Directive,function(self,compressor){if(compressor.has_directive(self.value)!==self){return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Debugger,function(self,compressor){if(compressor.option("drop_debugger"))return make_node(AST_EmptyStatement,self);return self});OPT(AST_LabeledStatement,function(self,compressor){if(self.body instanceof AST_Break&&compressor.loopcontrol_target(self.body)===self.body){return make_node(AST_EmptyStatement,self)}return self.label.references.length==0?self.body:self});OPT(AST_Block,function(self,compressor){tighten_body(self.body,compressor);return self});OPT(AST_BlockStatement,function(self,compressor){tighten_body(self.body,compressor);switch(self.body.length){case 1:return self.body[0];case 0:return make_node(AST_EmptyStatement,self)}return self});AST_Scope.DEFMETHOD("drop_unused",function(compressor){if(!compressor.option("unused"))return;if(compressor.has_directive("use asm"))return;var self=this;if(self.uses_eval||self.uses_with)return;var drop_funcs=!(self instanceof AST_Toplevel)||compressor.toplevel.funcs;var drop_vars=!(self instanceof AST_Toplevel)||compressor.toplevel.vars;var assign_as_unused=/keep_assign/.test(compressor.option("unused"))?return_false:function(node){if(node instanceof AST_Assign&&(node.write_only||node.operator=="=")){return node.left}if(node instanceof AST_Unary&&node.write_only)return node.expression};var in_use=[];var in_use_ids=Object.create(null);var fixed_ids=Object.create(null);if(self instanceof AST_Toplevel&&compressor.top_retain){self.variables.each(function(def){if(compressor.top_retain(def)&&!(def.id in in_use_ids)){in_use_ids[def.id]=true;in_use.push(def)}})}var var_defs_by_id=new Dictionary;var initializations=new Dictionary;var scope=this;var tw=new TreeWalker(function(node,descend){if(node===self)return;if(node instanceof AST_Defun){var node_def=node.name.definition();if(!drop_funcs&&scope===self){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}initializations.add(node_def.id,node);return true}if(node instanceof AST_SymbolFunarg&&scope===self){var_defs_by_id.add(node.definition().id,node)}if(node instanceof AST_Definitions&&scope===self){node.definitions.forEach(function(def){var node_def=def.name.definition();if(def.name instanceof AST_SymbolVar){var_defs_by_id.add(node_def.id,def)}if(!drop_vars){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}if(def.value){initializations.add(node_def.id,def.value);if(def.value.has_side_effects(compressor)){def.value.walk(tw)}if(!node_def.chained&&def.name.fixed_value()===def.value){fixed_ids[node_def.id]=def}}});return true}return scan_ref_scoped(node,descend)});self.walk(tw);tw=new TreeWalker(scan_ref_scoped);for(var i=0;i<in_use.length;i++){var init=initializations.get(in_use[i].id);if(init)init.forEach(function(init){init.walk(tw)})}var tt=new TreeTransformer(function before(node,descend,in_list){var parent=tt.parent();if(drop_vars){var sym=assign_as_unused(node);if(sym instanceof AST_SymbolRef){var def=sym.definition();var in_use=def.id in in_use_ids;if(node instanceof AST_Assign){if(!in_use||def.id in fixed_ids&&fixed_ids[def.id]!==node){return maintain_this_binding(parent,node,node.right.transform(tt))}}else if(!in_use)return make_node(AST_Number,node,{value:0})}}if(scope!==self)return;if(node instanceof AST_Function&&node.name&&!compressor.option("keep_fnames")){var def=node.name.definition();if(!(def.id in in_use_ids)||def.orig.length>1)node.name=null}if(node instanceof AST_Lambda&&!(node instanceof AST_Accessor)){var trim=!compressor.option("keep_fargs");for(var a=node.argnames,i=a.length;--i>=0;){var sym=a[i];if(!(sym.definition().id in in_use_ids)){sym.__unused=true;if(trim){a.pop();compressor[sym.unreferenced()?"warn":"info"]("Dropping unused function argument {name} [{file}:{line},{col}]",template(sym))}}else{trim=false}}}if(drop_funcs&&node instanceof AST_Defun&&node!==self){var def=node.name.definition();if(!(def.id in in_use_ids)){compressor[node.name.unreferenced()?"warn":"info"]("Dropping unused function {name} [{file}:{line},{col}]",template(node.name));def.eliminated++;return make_node(AST_EmptyStatement,node)}}if(node instanceof AST_Definitions&&!(parent instanceof AST_ForIn&&parent.init===node)){var body=[],head=[],tail=[];var side_effects=[];node.definitions.forEach(function(def){if(def.value)def.value=def.value.transform(tt);var sym=def.name.definition();if(!drop_vars||sym.id in in_use_ids){if(def.value&&sym.id in fixed_ids&&fixed_ids[sym.id]!==def){def.value=def.value.drop_side_effect_free(compressor)}if(def.name instanceof AST_SymbolVar){var var_defs=var_defs_by_id.get(sym.id);if(var_defs.length>1&&(!def.value||sym.orig.indexOf(def.name)>sym.eliminated)){compressor.warn("Dropping duplicated definition of variable {name} [{file}:{line},{col}]",template(def.name));if(def.value){var ref=make_node(AST_SymbolRef,def.name,def.name);sym.references.push(ref);var assign=make_node(AST_Assign,def,{operator:"=",left:ref,right:def.value});if(fixed_ids[sym.id]===def){fixed_ids[sym.id]=assign}side_effects.push(assign.transform(tt))}remove(var_defs,def);sym.eliminated++;return}}if(def.value){if(side_effects.length>0){if(tail.length>0){side_effects.push(def.value);def.value=make_sequence(def.value,side_effects)}else{body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}side_effects=[]}tail.push(def)}else{head.push(def)}}else if(sym.orig[0]instanceof AST_SymbolCatch){var value=def.value&&def.value.drop_side_effect_free(compressor);if(value)side_effects.push(value);def.value=null;head.push(def)}else{var value=def.value&&def.value.drop_side_effect_free(compressor);if(value){compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]",template(def.name));side_effects.push(value)}else{compressor[def.name.unreferenced()?"warn":"info"]("Dropping unused variable {name} [{file}:{line},{col}]",template(def.name))}sym.eliminated++}});if(head.length>0||tail.length>0){node.definitions=head.concat(tail);body.push(node)}if(side_effects.length>0){body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}switch(body.length){case 0:return in_list?MAP.skip:make_node(AST_EmptyStatement,node);case 1:return body[0];default:return in_list?MAP.splice(body):make_node(AST_BlockStatement,node,{body:body})}}if(node instanceof AST_For){descend(node,this);var block;if(node.init instanceof AST_BlockStatement){block=node.init;node.init=block.body.pop();block.body.push(node)}if(node.init instanceof AST_SimpleStatement){node.init=node.init.body}else if(is_empty(node.init)){node.init=null}return!block?node:in_list?MAP.splice(block.body):block}if(node instanceof AST_LabeledStatement&&node.body instanceof AST_For){descend(node,this);if(node.body instanceof AST_BlockStatement){var block=node.body;node.body=block.body.pop();block.body.push(node);return in_list?MAP.splice(block.body):block}return node}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend(node,this);scope=save_scope;return node}function template(sym){return{name:sym.name,file:sym.start.file,line:sym.start.line,col:sym.start.col}}});self.transform(tt);function scan_ref_scoped(node,descend){var node_def,sym=assign_as_unused(node);if(sym instanceof AST_SymbolRef&&self.variables.get(sym.name)===(node_def=sym.definition())){if(node instanceof AST_Assign){node.right.walk(tw);if(!node_def.chained&&node.left.fixed_value()===node.right){fixed_ids[node_def.id]=node}}return true}if(node instanceof AST_SymbolRef){node_def=node.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}return true}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend();scope=save_scope;return true}}});AST_Scope.DEFMETHOD("hoist_declarations",function(compressor){var self=this;if(compressor.has_directive("use asm"))return self;var hoist_funs=compressor.option("hoist_funs");var hoist_vars=compressor.option("hoist_vars");if(hoist_funs||hoist_vars){var dirs=[];var hoisted=[];var vars=new Dictionary,vars_found=0,var_decl=0;self.walk(new TreeWalker(function(node){if(node instanceof AST_Scope&&node!==self)return true;if(node instanceof AST_Var){++var_decl;return true}}));hoist_vars=hoist_vars&&var_decl>1;var tt=new TreeTransformer(function before(node){if(node!==self){if(node instanceof AST_Directive){dirs.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_funs&&node instanceof AST_Defun&&(tt.parent()===self||!compressor.has_directive("use strict"))){hoisted.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_vars&&node instanceof AST_Var){node.definitions.forEach(function(def){vars.set(def.name.name,def);++vars_found});var seq=node.to_assignments(compressor);var p=tt.parent();if(p instanceof AST_ForIn&&p.init===node){if(seq==null){var def=node.definitions[0].name;return make_node(AST_SymbolRef,def,def)}return seq}if(p instanceof AST_For&&p.init===node){return seq}if(!seq)return make_node(AST_EmptyStatement,node);return make_node(AST_SimpleStatement,node,{body:seq})}if(node instanceof AST_Scope)return node}});self=self.transform(tt);if(vars_found>0){var defs=[];vars.each(function(def,name){if(self instanceof AST_Lambda&&find_if(function(x){return x.name==def.name.name},self.argnames)){vars.del(name)}else{def=def.clone();def.value=null;defs.push(def);vars.set(name,def)}});if(defs.length>0){for(var i=0;i<self.body.length;){if(self.body[i]instanceof AST_SimpleStatement){var expr=self.body[i].body,sym,assign;if(expr instanceof AST_Assign&&expr.operator=="="&&(sym=expr.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=expr.right;remove(defs,def);defs.push(def);self.body.splice(i,1);continue}if(expr instanceof AST_Sequence&&(assign=expr.expressions[0])instanceof AST_Assign&&assign.operator=="="&&(sym=assign.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=assign.right;remove(defs,def);defs.push(def);self.body[i].body=make_sequence(expr,expr.expressions.slice(1));continue}}if(self.body[i]instanceof AST_EmptyStatement){self.body.splice(i,1);continue}if(self.body[i]instanceof AST_BlockStatement){var tmp=[i,1].concat(self.body[i].body);self.body.splice.apply(self.body,tmp);continue}break}defs=make_node(AST_Var,self,{definitions:defs});hoisted.push(defs)}}self.body=dirs.concat(hoisted,self.body)}return self});AST_Scope.DEFMETHOD("var_names",function(){var var_names=this._var_names;if(!var_names){this._var_names=var_names=Object.create(null);this.enclosed.forEach(function(def){var_names[def.name]=true});this.variables.each(function(def,name){var_names[name]=true})}return var_names});AST_Scope.DEFMETHOD("make_var_name",function(prefix){var var_names=this.var_names();prefix=prefix.replace(/[^a-z_$]+/gi,"_");var name=prefix;for(var i=0;var_names[name];i++)name=prefix+"$"+i;var_names[name]=true;return name});AST_Scope.DEFMETHOD("hoist_properties",function(compressor){var self=this;if(!compressor.option("hoist_props")||compressor.has_directive("use asm"))return self;var top_retain=self instanceof AST_Toplevel&&compressor.top_retain||return_false;var defs_by_id=Object.create(null);return self.transform(new TreeTransformer(function(node,descend){if(node instanceof AST_VarDef){var sym=node.name,def,value;if(sym.scope===self&&(def=sym.definition()).escaped!=1&&!def.single_use&&!def.direct_access&&!top_retain(def)&&(value=sym.fixed_value())===node.value&&value instanceof AST_Object){descend(node,this);var defs=new Dictionary;var assignments=[];value.properties.forEach(function(prop){assignments.push(make_node(AST_VarDef,node,{name:make_sym(prop.key),value:prop.value}))});defs_by_id[def.id]=defs;return MAP.splice(assignments)}}if(node instanceof AST_PropAccess&&node.expression instanceof AST_SymbolRef){var defs=defs_by_id[node.expression.definition().id];if(defs){var def=defs.get(get_value(node.property));var sym=make_node(AST_SymbolRef,node,{name:def.name,scope:node.expression.scope,thedef:def});sym.reference({});return sym}}function make_sym(key){var new_var=make_node(sym.CTOR,sym,{name:self.make_var_name(sym.name+"_"+key),scope:self});var def=self.def_variable(new_var);defs.set(key,def);self.enclosed.push(def);return new_var}}))});(function(def){function trim(nodes,compressor,first_in_statement){var len=nodes.length;if(!len)return null;var ret=[],changed=false;for(var i=0;i<len;i++){var node=nodes[i].drop_side_effect_free(compressor,first_in_statement);changed|=node!==nodes[i];if(node){ret.push(node);first_in_statement=false}}return changed?ret.length?ret:null:nodes}def(AST_Node,return_this);def(AST_Constant,return_null);def(AST_This,return_null);def(AST_Call,function(compressor,first_in_statement){if(!this.is_expr_pure(compressor)){if(this.expression.is_call_pure(compressor)){var exprs=this.args.slice();exprs.unshift(this.expression.expression);exprs=trim(exprs,compressor,first_in_statement);return exprs&&make_sequence(this,exprs)}if(this.expression instanceof AST_Function&&(!this.expression.name||!this.expression.name.definition().references.length)){var node=this.clone();node.expression.process_expression(false,compressor);return node}return this}if(this.pure){compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]",this.start)}var args=trim(this.args,compressor,first_in_statement);return args&&make_sequence(this,args)});def(AST_Accessor,return_null);def(AST_Function,return_null);def(AST_Binary,function(compressor,first_in_statement){var right=this.right.drop_side_effect_free(compressor);if(!right)return this.left.drop_side_effect_free(compressor,first_in_statement);if(lazy_op(this.operator)){if(right===this.right)return this;var node=this.clone();node.right=right;return node}else{var left=this.left.drop_side_effect_free(compressor,first_in_statement);if(!left)return this.right.drop_side_effect_free(compressor,first_in_statement);return make_sequence(this,[left,right])}});def(AST_Assign,function(compressor){var left=this.left;if(left.has_side_effects(compressor)||compressor.has_directive("use strict")&&left instanceof AST_PropAccess&&left.expression.is_constant()){return this}this.write_only=true;while(left instanceof AST_PropAccess){left=left.expression}if(left.is_constant_expression(compressor.find_parent(AST_Scope))){return this.right.drop_side_effect_free(compressor)}return this});def(AST_Conditional,function(compressor){var consequent=this.consequent.drop_side_effect_free(compressor);var alternative=this.alternative.drop_side_effect_free(compressor);if(consequent===this.consequent&&alternative===this.alternative)return this;if(!consequent)return alternative?make_node(AST_Binary,this,{operator:"||",left:this.condition,right:alternative}):this.condition.drop_side_effect_free(compressor);if(!alternative)return make_node(AST_Binary,this,{operator:"&&",left:this.condition,right:consequent});var node=this.clone();node.consequent=consequent;node.alternative=alternative;return node});def(AST_Unary,function(compressor,first_in_statement){if(unary_side_effects(this.operator)){this.write_only=!this.expression.has_side_effects(compressor);return this}if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return null;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(first_in_statement&&expression&&is_iife_call(expression)){if(expression===this.expression&&this.operator=="!")return this;return expression.negate(compressor,first_in_statement)}return expression});def(AST_SymbolRef,function(compressor){return this.is_declared(compressor)?null:this});def(AST_Object,function(compressor,first_in_statement){var values=trim(this.properties,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_ObjectProperty,function(compressor,first_in_statement){return this.value.drop_side_effect_free(compressor,first_in_statement)});def(AST_Array,function(compressor,first_in_statement){var values=trim(this.elements,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_Dot,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;return this.expression.drop_side_effect_free(compressor,first_in_statement)});def(AST_Sub,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(!expression)return this.property.drop_side_effect_free(compressor,first_in_statement);var property=this.property.drop_side_effect_free(compressor);if(!property)return expression;return make_sequence(this,[expression,property])});def(AST_Sequence,function(compressor){var last=this.tail_node();var expr=last.drop_side_effect_free(compressor);if(expr===last)return this;var expressions=this.expressions.slice(0,-1);if(expr)expressions.push(expr);return make_sequence(this,expressions)})})(function(node,func){node.DEFMETHOD("drop_side_effect_free",func)});OPT(AST_SimpleStatement,function(self,compressor){if(compressor.option("side_effects")){var body=self.body;var node=body.drop_side_effect_free(compressor,true);if(!node){compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]",self.start);return make_node(AST_EmptyStatement,self)}if(node!==body){return make_node(AST_SimpleStatement,self,{body:node})}}return self});OPT(AST_While,function(self,compressor){return compressor.option("loops")?make_node(AST_For,self,self).optimize(compressor):self});OPT(AST_Do,function(self,compressor){if(!compressor.option("loops"))return self;var cond=self.condition.tail_node().evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)return make_node(AST_For,self,{body:make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]})}).optimize(compressor);var has_loop_control=false;var tw=new TreeWalker(function(node){if(node instanceof AST_Scope||has_loop_control)return true;if(node instanceof AST_LoopControl&&tw.loopcontrol_target(node)===self)return has_loop_control=true});var parent=compressor.parent();(parent instanceof AST_LabeledStatement?parent:self).walk(tw);if(!has_loop_control)return make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]}).optimize(compressor)}return self});function if_break_in_loop(self,compressor){var first=self.body instanceof AST_BlockStatement?self.body.body[0]:self.body;if(compressor.option("dead_code")&&is_break(first)){var body=[];if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}if(self.condition){body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}))}extract_declarations_from_unreachable_code(compressor,self.body,body);return make_node(AST_BlockStatement,self,{body:body})}if(first instanceof AST_If){if(is_break(first.body)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition.negate(compressor)})}else{self.condition=first.condition.negate(compressor)}drop_it(first.alternative)}else if(is_break(first.alternative)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition})}else{self.condition=first.condition}drop_it(first.body)}}return self;function is_break(node){return node instanceof AST_Break&&compressor.loopcontrol_target(node)===compressor.self()}function drop_it(rest){rest=as_statement_array(rest);if(self.body instanceof AST_BlockStatement){self.body=self.body.clone();self.body.body=rest.concat(self.body.body.slice(1));self.body=self.body.transform(compressor)}else{self.body=make_node(AST_BlockStatement,self.body,{body:rest}).transform(compressor)}self=if_break_in_loop(self,compressor)}}OPT(AST_For,function(self,compressor){if(!compressor.option("loops"))return self;if(compressor.option("side_effects")&&self.init){self.init=self.init.drop_side_effect_free(compressor)}if(self.condition){var cond=self.condition.evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)self.condition=null;else if(!compressor.option("dead_code")){var orig=self.condition;self.condition=make_node_from_constant(cond,self.condition);self.condition=best_of_expression(self.condition.transform(compressor),orig)}}if(compressor.option("dead_code")){if(cond instanceof AST_Node)cond=self.condition.tail_node().evaluate(compressor);if(!cond){var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}}return if_break_in_loop(self,compressor)});OPT(AST_If,function(self,compressor){if(is_empty(self.alternative))self.alternative=null;if(!compressor.option("conditionals"))return self;var cond=self.condition.evaluate(compressor);if(!compressor.option("dead_code")&&!(cond instanceof AST_Node)){var orig=self.condition;self.condition=make_node_from_constant(cond,orig);self.condition=best_of_expression(self.condition.transform(compressor),orig)}if(compressor.option("dead_code")){if(cond instanceof AST_Node)cond=self.condition.tail_node().evaluate(compressor);if(!cond){compressor.warn("Condition always false [{file}:{line},{col}]",self.condition.start);var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));if(self.alternative)body.push(self.alternative);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}else if(!(cond instanceof AST_Node)){compressor.warn("Condition always true [{file}:{line},{col}]",self.condition.start);var body=[];if(self.alternative){extract_declarations_from_unreachable_code(compressor,self.alternative,body)}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));body.push(self.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}var negated=self.condition.negate(compressor);var self_condition_length=self.condition.print_to_string().length;var negated_length=negated.print_to_string().length;var negated_is_best=negated_length<self_condition_length;if(self.alternative&&negated_is_best){negated_is_best=false;self.condition=negated;var tmp=self.body;self.body=self.alternative||make_node(AST_EmptyStatement,self);self.alternative=tmp}if(is_empty(self.body)&&is_empty(self.alternative)){return make_node(AST_SimpleStatement,self.condition,{body:self.condition.clone()}).optimize(compressor)}if(self.body instanceof AST_SimpleStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.body,alternative:self.alternative.body})}).optimize(compressor)}if(is_empty(self.alternative)&&self.body instanceof AST_SimpleStatement){if(self_condition_length===negated_length&&!negated_is_best&&self.condition instanceof AST_Binary&&self.condition.operator=="||"){negated_is_best=true}if(negated_is_best)return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:negated,right:self.body.body})}).optimize(compressor);return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:self.body.body})}).optimize(compressor)}if(self.body instanceof AST_EmptyStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:self.condition,right:self.alternative.body})}).optimize(compressor)}if(self.body instanceof AST_Exit&&self.alternative instanceof AST_Exit&&self.body.TYPE==self.alternative.TYPE){return make_node(self.body.CTOR,self,{value:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.value||make_node(AST_Undefined,self.body),alternative:self.alternative.value||make_node(AST_Undefined,self.alternative)}).transform(compressor)}).optimize(compressor)}if(self.body instanceof AST_If&&!self.body.alternative&&!self.alternative){self=make_node(AST_If,self,{condition:make_node(AST_Binary,self.condition,{operator:"&&",left:self.condition,right:self.body.condition}),body:self.body.body,alternative:null})}if(aborts(self.body)){if(self.alternative){var alt=self.alternative;self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,alt]}).optimize(compressor)}}if(aborts(self.alternative)){var body=self.body;self.body=self.alternative;self.condition=negated_is_best?negated:self.condition.negate(compressor);self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,body]}).optimize(compressor)}return self});OPT(AST_Switch,function(self,compressor){if(!compressor.option("switches"))return self;var branch;var value=self.expression.evaluate(compressor);if(!(value instanceof AST_Node)){var orig=self.expression;self.expression=make_node_from_constant(value,orig);self.expression=best_of_expression(self.expression.transform(compressor),orig)}if(!compressor.option("dead_code"))return self;if(value instanceof AST_Node){value=self.expression.tail_node().evaluate(compressor)}var decl=[];var body=[];var default_branch;var exact_match;for(var i=0,len=self.body.length;i<len&&!exact_match;i++){branch=self.body[i];if(branch instanceof AST_Default){if(!default_branch){default_branch=branch}else{eliminate_branch(branch,body[body.length-1])}}else if(!(value instanceof AST_Node)){var exp=branch.expression.evaluate(compressor);if(!(exp instanceof AST_Node)&&exp!==value){eliminate_branch(branch,body[body.length-1]);continue}if(exp instanceof AST_Node)exp=branch.expression.tail_node().evaluate(compressor);if(exp===value){exact_match=branch;if(default_branch){var default_index=body.indexOf(default_branch);body.splice(default_index,1);eliminate_branch(default_branch,body[default_index-1]);default_branch=null}}}if(aborts(branch)){var prev=body[body.length-1];if(aborts(prev)&&prev.body.length==branch.body.length&&make_node(AST_BlockStatement,prev,prev).equivalent_to(make_node(AST_BlockStatement,branch,branch))){prev.body=[]}}body.push(branch)}while(i<len)eliminate_branch(self.body[i++],body[body.length-1]);if(body.length>0){body[0].body=decl.concat(body[0].body)}self.body=body;while(branch=body[body.length-1]){var stat=branch.body[branch.body.length-1];if(stat instanceof AST_Break&&compressor.loopcontrol_target(stat)===self)branch.body.pop();if(branch.body.length||branch instanceof AST_Case&&(default_branch||branch.expression.has_side_effects(compressor)))break;if(body.pop()===default_branch)default_branch=null}if(body.length==0){return make_node(AST_BlockStatement,self,{body:decl.concat(make_node(AST_SimpleStatement,self.expression,{body:self.expression}))}).optimize(compressor)}if(body.length==1&&(body[0]===exact_match||body[0]===default_branch)){var has_break=false;var tw=new TreeWalker(function(node){if(has_break||node instanceof AST_Lambda||node instanceof AST_SimpleStatement)return true;if(node instanceof AST_Break&&tw.loopcontrol_target(node)===self)has_break=true});self.walk(tw);if(!has_break){var statements=body[0].body.slice();var exp=body[0].expression;if(exp)statements.unshift(make_node(AST_SimpleStatement,exp,{body:exp}));statements.unshift(make_node(AST_SimpleStatement,self.expression,{body:self.expression}));return make_node(AST_BlockStatement,self,{body:statements}).optimize(compressor)}}return self;function eliminate_branch(branch,prev){if(prev&&!aborts(prev)){prev.body=prev.body.concat(branch.body)}else{extract_declarations_from_unreachable_code(compressor,branch,decl)}}});OPT(AST_Try,function(self,compressor){tighten_body(self.body,compressor);if(self.bcatch&&self.bfinally&&all(self.bfinally.body,is_empty))self.bfinally=null;if(compressor.option("dead_code")&&all(self.body,is_empty)){var body=[];if(self.bcatch){extract_declarations_from_unreachable_code(compressor,self.bcatch,body);body.forEach(function(stat){if(!(stat instanceof AST_Definitions))return;stat.definitions.forEach(function(var_def){var def=var_def.name.definition().redefined();if(!def)return;var_def.name=var_def.name.clone();var_def.name.thedef=def})})}if(self.bfinally)body=body.concat(self.bfinally.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}return self});AST_Definitions.DEFMETHOD("remove_initializers",function(){this.definitions.forEach(function(def){def.value=null})});AST_Definitions.DEFMETHOD("to_assignments",function(compressor){var reduce_vars=compressor.option("reduce_vars");var assignments=this.definitions.reduce(function(a,def){if(def.value){var name=make_node(AST_SymbolRef,def.name,def.name);a.push(make_node(AST_Assign,def,{operator:"=",left:name,right:def.value}));if(reduce_vars)name.definition().fixed=false}def=def.name.definition();def.eliminated++;def.replaced--;return a},[]);if(assignments.length==0)return null;return make_sequence(this,assignments)});OPT(AST_Definitions,function(self,compressor){if(self.definitions.length==0)return make_node(AST_EmptyStatement,self);return self});OPT(AST_Call,function(self,compressor){var exp=self.expression;var fn=exp;if(compressor.option("reduce_vars")&&fn instanceof AST_SymbolRef){fn=fn.fixed_value()}var is_func=fn instanceof AST_Lambda;if(compressor.option("unused")&&is_func&&!fn.uses_arguments&&!fn.uses_eval){var pos=0,last=0;for(var i=0,len=self.args.length;i<len;i++){var trim=i>=fn.argnames.length;if(trim||fn.argnames[i].__unused){var node=self.args[i].drop_side_effect_free(compressor);if(node){self.args[pos++]=node}else if(!trim){self.args[pos++]=make_node(AST_Number,self.args[i],{value:0});continue}}else{self.args[pos++]=self.args[i]}last=pos}self.args.length=last}if(compressor.option("unsafe")){if(is_undeclared_ref(exp))switch(exp.name){case"Array":if(self.args.length!=1){return make_node(AST_Array,self,{elements:self.args}).optimize(compressor)}break;case"Object":if(self.args.length==0){return make_node(AST_Object,self,{properties:[]})}break;case"String":if(self.args.length==0)return make_node(AST_String,self,{value:""});if(self.args.length<=1)return make_node(AST_Binary,self,{left:self.args[0],operator:"+",right:make_node(AST_String,self,{value:""})}).optimize(compressor);break;case"Number":if(self.args.length==0)return make_node(AST_Number,self,{value:0});if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"+"}).optimize(compressor);case"Boolean":if(self.args.length==0)return make_node(AST_False,self);if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"!"}),operator:"!"}).optimize(compressor);break;case"RegExp":var params=[];if(all(self.args,function(arg){var value=arg.evaluate(compressor);params.unshift(value);return arg!==value})){try{return best_of(compressor,self,make_node(AST_RegExp,self,{value:RegExp.apply(RegExp,params)}))}catch(ex){compressor.warn("Error converting {expr} [{file}:{line},{col}]",{expr:self.print_to_string(),file:self.start.file,line:self.start.line,col:self.start.col})}}break}else if(exp instanceof AST_Dot)switch(exp.property){case"toString":if(self.args.length==0&&!exp.expression.may_throw_on_access(compressor)){return make_node(AST_Binary,self,{left:make_node(AST_String,self,{value:""}),operator:"+",right:exp.expression}).optimize(compressor)}break;case"join":if(exp.expression instanceof AST_Array)EXIT:{var separator;if(self.args.length>0){separator=self.args[0].evaluate(compressor);if(separator===self.args[0])break EXIT}var elements=[];var consts=[];exp.expression.elements.forEach(function(el){var value=el.evaluate(compressor);if(value!==el){consts.push(value)}else{if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}));consts.length=0}elements.push(el)}});if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}))}if(elements.length==0)return make_node(AST_String,self,{value:""});if(elements.length==1){if(elements[0].is_string(compressor)){return elements[0]}return make_node(AST_Binary,elements[0],{operator:"+",left:make_node(AST_String,self,{value:""}),right:elements[0]})}if(separator==""){var first;if(elements[0].is_string(compressor)||elements[1].is_string(compressor)){first=elements.shift()}else{first=make_node(AST_String,self,{value:""})}return elements.reduce(function(prev,el){return make_node(AST_Binary,el,{operator:"+",left:prev,right:el})},first).optimize(compressor)}var node=self.clone();node.expression=node.expression.clone();node.expression.expression=node.expression.expression.clone();node.expression.expression.elements=elements;return best_of(compressor,self,node)}break;case"charAt":if(exp.expression.is_string(compressor)){var arg=self.args[0];var index=arg?arg.evaluate(compressor):0;if(index!==arg){return make_node(AST_Sub,exp,{expression:exp.expression,property:make_node_from_constant(index|0,arg||exp)}).optimize(compressor)}}break;case"apply":if(self.args.length==2&&self.args[1]instanceof AST_Array){var args=self.args[1].elements.slice();args.unshift(self.args[0]);return make_node(AST_Call,self,{expression:make_node(AST_Dot,exp,{expression:exp.expression,property:"call"}),args:args}).optimize(compressor)}break;case"call":var func=exp.expression;if(func instanceof AST_SymbolRef){func=func.fixed_value()}if(func instanceof AST_Lambda&&!func.contains_this()){return make_sequence(this,[self.args[0],make_node(AST_Call,self,{expression:exp.expression,args:self.args.slice(1)})]).optimize(compressor)}break}}if(compressor.option("unsafe_Function")&&is_undeclared_ref(exp)&&exp.name=="Function"){if(self.args.length==0)return make_node(AST_Function,self,{argnames:[],body:[]});if(all(self.args,function(x){return x instanceof AST_String})){try{var code="n(function("+self.args.slice(0,-1).map(function(arg){return arg.value}).join(",")+"){"+self.args[self.args.length-1].value+"})";var ast=parse(code);var mangle={ie8:compressor.option("ie8")};ast.figure_out_scope(mangle);var comp=new Compressor(compressor.options);ast=ast.transform(comp);ast.figure_out_scope(mangle);base54.reset();ast.compute_char_frequency(mangle);ast.mangle_names(mangle);var fun;ast.walk(new TreeWalker(function(node){if(fun)return true;if(node instanceof AST_Lambda){fun=node;return true}}));var code=OutputStream();AST_BlockStatement.prototype._codegen.call(fun,fun,code);self.args=[make_node(AST_String,self,{value:fun.argnames.map(function(arg){return arg.print_to_string()}).join(",")}),make_node(AST_String,self.args[self.args.length-1],{value:code.get().replace(/^\{|\}$/g,"")})];return self}catch(ex){if(ex instanceof JS_Parse_Error){compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]",self.args[self.args.length-1].start);compressor.warn(ex.toString())}else{throw ex}}}}var stat=is_func&&fn.body[0];if(compressor.option("inline")&&stat instanceof AST_Return){var value=stat.value;if(!value||value.is_constant_expression()){var args=self.args.concat(value||make_node(AST_Undefined,self));return make_sequence(self,args).optimize(compressor)}}if(is_func){var def,value,scope,in_loop,level=-1;if(compressor.option("inline")&&!fn.uses_arguments&&!fn.uses_eval&&!(fn.name&&fn instanceof AST_Function)&&(value=can_flatten_body(stat))&&(exp===fn||compressor.option("unused")&&(def=exp.definition()).references.length==1&&!recursive_ref(compressor,def)&&fn.is_constant_expression(exp.scope))&&!self.pure&&!fn.contains_this()&&can_inject_symbols()){return make_sequence(self,flatten_fn()).optimize(compressor)}if(compressor.option("side_effects")&&all(fn.body,is_empty)){var args=self.args.concat(make_node(AST_Undefined,self));return make_sequence(self,args).optimize(compressor)}}if(compressor.option("drop_console")){if(exp instanceof AST_PropAccess){var name=exp.expression;while(name.expression){name=name.expression}if(is_undeclared_ref(name)&&name.name=="console"){return make_node(AST_Undefined,self).optimize(compressor)}}}if(compressor.option("negate_iife")&&compressor.parent()instanceof AST_SimpleStatement&&is_iife_call(self)){return self.negate(compressor,true)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self;function return_value(stat){if(!stat)return make_node(AST_Undefined,self);if(stat instanceof AST_Return){if(!stat.value)return make_node(AST_Undefined,self);return stat.value.clone(true)}if(stat instanceof AST_SimpleStatement){return make_node(AST_UnaryPrefix,stat,{operator:"void",expression:stat.body.clone(true)})}}function can_flatten_body(stat){var len=fn.body.length;if(compressor.option("inline")<3){return len==1&&return_value(stat)}stat=null;for(var i=0;i<len;i++){var line=fn.body[i];if(line instanceof AST_Var){if(stat&&!all(line.definitions,function(var_def){return!var_def.value})){return false}}else if(stat){return false}else{stat=line}}return return_value(stat)}function can_inject_args(catches,safe_to_inject){for(var i=0,len=fn.argnames.length;i<len;i++){var arg=fn.argnames[i];if(arg.__unused)continue;if(!safe_to_inject||catches[arg.name]||identifier_atom(arg.name)||scope.var_names()[arg.name]){return false}if(in_loop)in_loop.push(arg.definition())}return true}function can_inject_vars(catches,safe_to_inject){var len=fn.body.length;for(var i=0;i<len;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;if(!safe_to_inject)return false;for(var j=stat.definitions.length;--j>=0;){var name=stat.definitions[j].name;if(catches[name.name]||identifier_atom(name.name)||scope.var_names()[name.name]){return false}if(in_loop)in_loop.push(name.definition())}}return true}function can_inject_symbols(){var catches=Object.create(null);do{scope=compressor.parent(++level);if(scope instanceof AST_Catch){catches[scope.argname.name]=true}else if(scope instanceof AST_IterationStatement){in_loop=[]}else if(scope instanceof AST_SymbolRef){if(scope.fixed_value()instanceof AST_Scope)return false}}while(!(scope instanceof AST_Scope));var safe_to_inject=!(scope instanceof AST_Toplevel)||compressor.toplevel.vars;var inline=compressor.option("inline");if(!can_inject_vars(catches,inline>=3&&safe_to_inject))return false;if(!can_inject_args(catches,inline>=2&&safe_to_inject))return false;return!in_loop||in_loop.length==0||!is_reachable(fn,in_loop)}function append_var(decls,expressions,name,value){var def=name.definition();scope.variables.set(name.name,def);scope.enclosed.push(def);if(!scope.var_names()[name.name]){scope.var_names()[name.name]=true;decls.push(make_node(AST_VarDef,name,{name:name,value:null}))}var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);if(value)expressions.push(make_node(AST_Assign,self,{operator:"=",left:sym,right:value}))}function flatten_args(decls,expressions){var len=fn.argnames.length;for(var i=self.args.length;--i>=len;){expressions.push(self.args[i])}for(i=len;--i>=0;){var name=fn.argnames[i];var value=self.args[i];if(name.__unused||scope.var_names()[name.name]){if(value)expressions.push(value)}else{var symbol=make_node(AST_SymbolVar,name,name);name.definition().orig.push(symbol);if(!value&&in_loop)value=make_node(AST_Undefined,self);append_var(decls,expressions,symbol,value)}}decls.reverse();expressions.reverse()}function flatten_vars(decls,expressions){var pos=expressions.length;for(var i=0,lines=fn.body.length;i<lines;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;for(var j=0,defs=stat.definitions.length;j<defs;j++){var var_def=stat.definitions[j];var name=var_def.name;append_var(decls,expressions,name,var_def.value);if(in_loop){var def=name.definition();var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);expressions.splice(pos++,0,make_node(AST_Assign,var_def,{operator:"=",left:sym,right:make_node(AST_Undefined,name)}))}}}}function flatten_fn(){var decls=[];var expressions=[];flatten_args(decls,expressions);flatten_vars(decls,expressions);expressions.push(value);if(decls.length){i=scope.body.indexOf(compressor.parent(level-1))+1;scope.body.splice(i,0,make_node(AST_Var,fn,{definitions:decls}))}return expressions}});OPT(AST_New,function(self,compressor){if(compressor.option("unsafe")){var exp=self.expression;if(is_undeclared_ref(exp)){switch(exp.name){case"Object":case"RegExp":case"Function":case"Error":case"Array":return make_node(AST_Call,self,self).transform(compressor)}}}return self});OPT(AST_Sequence,function(self,compressor){if(!compressor.option("side_effects"))return self;var expressions=[];filter_for_side_effects();var end=expressions.length-1;trim_right_for_undefined();if(end==0){self=maintain_this_binding(compressor.parent(),compressor.self(),expressions[0]);if(!(self instanceof AST_Sequence))self=self.optimize(compressor);return self}self.expressions=expressions;return self;function filter_for_side_effects(){var first=first_in_statement(compressor);var last=self.expressions.length-1;self.expressions.forEach(function(expr,index){if(index<last)expr=expr.drop_side_effect_free(compressor,first);if(expr){merge_sequence(expressions,expr);first=false}})}function trim_right_for_undefined(){while(end>0&&is_undefined(expressions[end],compressor))end--;if(end<expressions.length-1){expressions[end]=make_node(AST_UnaryPrefix,self,{operator:"void",expression:expressions[end]});expressions.length=end+1}}});AST_Unary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.expression instanceof AST_Sequence){var x=this.expression.expressions.slice();var e=this.clone();e.expression=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}}return this});OPT(AST_UnaryPostfix,function(self,compressor){return self.lift_sequences(compressor)});OPT(AST_UnaryPrefix,function(self,compressor){var e=self.expression;if(self.operator=="delete"&&!(e instanceof AST_SymbolRef||e instanceof AST_PropAccess||is_identifier_atom(e))){if(e instanceof AST_Sequence){e=e.expressions.slice();e.push(make_node(AST_True,self));return make_sequence(self,e).optimize(compressor)}return make_sequence(self,[e,make_node(AST_True,self)]).optimize(compressor)}var seq=self.lift_sequences(compressor);if(seq!==self){return seq}if(compressor.option("side_effects")&&self.operator=="void"){e=e.drop_side_effect_free(compressor);if(e){self.expression=e;return self}else{return make_node(AST_Undefined,self).optimize(compressor)}}if(compressor.in_boolean_context()){switch(self.operator){case"!":if(e instanceof AST_UnaryPrefix&&e.operator=="!"){return e.expression}if(e instanceof AST_Binary){self=best_of(compressor,self,e.negate(compressor,first_in_statement(compressor)))}break;case"typeof":compressor.warn("Boolean expression always true [{file}:{line},{col}]",self.start);return(e instanceof AST_SymbolRef?make_node(AST_True,self):make_sequence(self,[e,make_node(AST_True,self)])).optimize(compressor)}}if(self.operator=="-"&&e instanceof AST_Infinity){e=e.transform(compressor)}if(e instanceof AST_Binary&&(self.operator=="+"||self.operator=="-")&&(e.operator=="*"||e.operator=="/"||e.operator=="%")){return make_node(AST_Binary,self,{operator:e.operator,left:make_node(AST_UnaryPrefix,e.left,{operator:self.operator,expression:e.left}),right:e.right})}if(self.operator!="-"||!(e instanceof AST_Number||e instanceof AST_Infinity)){var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}}return self});AST_Binary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.left instanceof AST_Sequence){var x=this.left.expressions.slice();var e=this.clone();e.left=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}if(this.right instanceof AST_Sequence&&!this.left.has_side_effects(compressor)){var assign=this.operator=="="&&this.left instanceof AST_SymbolRef;var x=this.right.expressions;var last=x.length-1;for(var i=0;i<last;i++){if(!assign&&x[i].has_side_effects(compressor))break}if(i==last){x=x.slice();var e=this.clone();e.right=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}else if(i>0){var e=this.clone();e.right=make_sequence(this.right,x.slice(i));x=x.slice(0,i);x.push(e);return make_sequence(this,x).optimize(compressor)}}}return this});var commutativeOperators=makePredicate("== === != !== * & | ^");function is_object(node){return node instanceof AST_Array||node instanceof AST_Lambda||node instanceof AST_Object}OPT(AST_Binary,function(self,compressor){function reversible(){return self.left.is_constant()||self.right.is_constant()||!self.left.has_side_effects(compressor)&&!self.right.has_side_effects(compressor)}function reverse(op){if(reversible()){if(op)self.operator=op;var tmp=self.left;self.left=self.right;self.right=tmp}}if(commutativeOperators(self.operator)){if(self.right.is_constant()&&!self.left.is_constant()){if(!(self.left instanceof AST_Binary&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){reverse()}}}self=self.lift_sequences(compressor);if(compressor.option("comparisons"))switch(self.operator){case"===":case"!==":var is_strict_comparison=true;if(self.left.is_string(compressor)&&self.right.is_string(compressor)||self.left.is_number(compressor)&&self.right.is_number(compressor)||self.left.is_boolean()&&self.right.is_boolean()||self.left.equivalent_to(self.right)){self.operator=self.operator.substr(0,2)}case"==":case"!=":if(!is_strict_comparison&&is_undefined(self.left,compressor)){self.left=make_node(AST_Null,self.left)}else if(compressor.option("typeofs")&&self.left instanceof AST_String&&self.left.value=="undefined"&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="typeof"){var expr=self.right.expression;if(expr instanceof AST_SymbolRef?expr.is_declared(compressor):!(expr instanceof AST_PropAccess&&compressor.option("ie8"))){self.right=expr;self.left=make_node(AST_Undefined,self.left).optimize(compressor);if(self.operator.length==2)self.operator+="="}}else if(self.left instanceof AST_SymbolRef&&self.right instanceof AST_SymbolRef&&self.left.definition()===self.right.definition()&&is_object(self.left.fixed_value())){return make_node(self.operator[0]=="="?AST_True:AST_False,self)}break;case"&&":case"||":var lhs=self.left;if(lhs.operator==self.operator){lhs=lhs.right}if(lhs instanceof AST_Binary&&lhs.operator==(self.operator=="&&"?"!==":"===")&&self.right instanceof AST_Binary&&lhs.operator==self.right.operator&&(is_undefined(lhs.left,compressor)&&self.right.left instanceof AST_Null||lhs.left instanceof AST_Null&&is_undefined(self.right.left,compressor))&&!lhs.right.has_side_effects(compressor)&&lhs.right.equivalent_to(self.right.right)){var combined=make_node(AST_Binary,self,{operator:lhs.operator.slice(0,-1),left:make_node(AST_Null,self),right:lhs.right});if(lhs!==self.left){combined=make_node(AST_Binary,self,{operator:self.operator,left:self.left.left,right:combined})}return combined}break}if(self.operator=="+"&&compressor.in_boolean_context()){var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll&&typeof ll=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.right,make_node(AST_True,self)]).optimize(compressor)}if(rr&&typeof rr=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}}if(compressor.option("comparisons")&&self.is_boolean()){if(!(compressor.parent()instanceof AST_Binary)||compressor.parent()instanceof AST_Assign){var negated=make_node(AST_UnaryPrefix,self,{operator:"!",expression:self.negate(compressor,first_in_statement(compressor))});self=best_of(compressor,self,negated)}if(compressor.option("unsafe_comps")){switch(self.operator){case"<":reverse(">");break;case"<=":reverse(">=");break}}}if(self.operator=="+"){if(self.right instanceof AST_String&&self.right.getValue()==""&&self.left.is_string(compressor)){return self.left}if(self.left instanceof AST_String&&self.left.getValue()==""&&self.right.is_string(compressor)){return self.right}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.left instanceof AST_String&&self.left.left.getValue()==""&&self.right.is_string(compressor)){self.left=self.left.right;return self.transform(compressor)}}if(compressor.option("evaluate")){switch(self.operator){case"&&":var ll=self.left.truthy?true:self.left.falsy?false:self.left.evaluate(compressor);if(!ll){compressor.warn("Condition left of && always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.left).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of && always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){if(compressor.in_boolean_context()){compressor.warn("Boolean && always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_False,self)]).optimize(compressor)}else self.falsy=true}else if(!(rr instanceof AST_Node)){var parent=compressor.parent();if(parent.operator=="&&"&&parent.left===compressor.self()||compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free && [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}if(self.left.operator=="||"){var lr=self.left.right.evaluate(compressor);if(!lr)return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.right,alternative:self.left.right}).optimize(compressor)}break;case"||":var ll=self.left.truthy?true:self.left.falsy?false:self.left.evaluate(compressor);if(!ll){compressor.warn("Condition left of || always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of || always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.left).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){var parent=compressor.parent();if(parent.operator=="||"&&parent.left===compressor.self()||compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free || [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}else if(!(rr instanceof AST_Node)){if(compressor.in_boolean_context()){compressor.warn("Boolean || always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}else self.truthy=true}if(self.left.operator=="&&"){var lr=self.left.right.evaluate(compressor);if(lr&&!(lr instanceof AST_Node))return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.left.right,alternative:self.right}).optimize(compressor)}break}var associative=true;switch(self.operator){case"+":if(self.left instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_String,self.left,{value:""+self.left.getValue()+self.right.left.getValue(),start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.right instanceof AST_Constant&&self.left.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:self.left.left,right:make_node(AST_String,self.right,{value:""+self.left.right.getValue()+self.right.getValue(),start:self.left.right.start,end:self.right.end})})}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.is_string(compressor)&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_Binary,self.left,{operator:"+",left:self.left.left,right:make_node(AST_String,self.left.right,{value:""+self.left.right.getValue()+self.right.left.getValue(),start:self.left.right.start,end:self.right.left.end})}),right:self.right.right})}if(self.right instanceof AST_UnaryPrefix&&self.right.operator=="-"&&self.left.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.left,right:self.right.expression});break}if(self.left instanceof AST_UnaryPrefix&&self.left.operator=="-"&&reversible()&&self.right.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.right,right:self.left.expression});break}case"*":associative=compressor.option("unsafe_math");case"&":case"|":case"^":if(self.left.is_number(compressor)&&self.right.is_number(compressor)&&reversible()&&!(self.left instanceof AST_Binary&&self.left.operator!=self.operator&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){var reversed=make_node(AST_Binary,self,{operator:self.operator,left:self.right,right:self.left});if(self.right instanceof AST_Constant&&!(self.left instanceof AST_Constant)){self=best_of(compressor,reversed,self)}else{self=best_of(compressor,self,reversed)}}if(associative&&self.is_number(compressor)){if(self.right instanceof AST_Binary&&self.right.operator==self.operator){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left,start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator==self.operator){if(self.left.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.left,right:self.right,start:self.left.left.start,end:self.right.end}),right:self.left.right})}else if(self.left.right instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.right,right:self.right,start:self.left.right.start,end:self.right.end}),right:self.left.left})}}if(self.left instanceof AST_Binary&&self.left.operator==self.operator&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator==self.operator&&self.right.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:make_node(AST_Binary,self.left.left,{operator:self.operator,left:self.left.right,right:self.right.left,start:self.left.right.start,end:self.right.left.end}),right:self.left.left}),right:self.right.right})}}}}if(self.right instanceof AST_Binary&&self.right.operator==self.operator&&(lazy_op(self.operator)||self.operator=="+"&&(self.right.left.is_string(compressor)||self.left.is_string(compressor)&&self.right.right.is_string(compressor)))){self.left=make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left});self.right=self.right.right;return self.transform(compressor)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});function recursive_ref(compressor,def){var node;for(var i=0;node=compressor.parent(i);i++){if(node instanceof AST_Lambda){var name=node.name;if(name&&name.definition()===def)break}}return node}OPT(AST_SymbolRef,function(self,compressor){var def=self.resolve_defines(compressor);if(def){return def.optimize(compressor)}if(!compressor.option("ie8")&&is_undeclared_ref(self)&&(!self.scope.uses_with||!compressor.find_parent(AST_With))){switch(self.name){case"undefined":return make_node(AST_Undefined,self).optimize(compressor);case"NaN":return make_node(AST_NaN,self).optimize(compressor);case"Infinity":return make_node(AST_Infinity,self).optimize(compressor)}}if(compressor.option("reduce_vars")&&is_lhs(self,compressor.parent())!==self){var d=self.definition();var fixed=self.fixed_value();var single_use=d.single_use;if(single_use&&fixed instanceof AST_Lambda){if(d.scope!==self.scope&&(!compressor.option("reduce_funcs")||d.escaped==1||fixed.inlined)){single_use=false}else if(recursive_ref(compressor,d)){single_use=false}else if(d.scope!==self.scope||d.orig[0]instanceof AST_SymbolFunarg){single_use=fixed.is_constant_expression(self.scope);if(single_use=="f"){var scope=self.scope;do{if(scope instanceof AST_Defun||scope instanceof AST_Function){scope.inlined=true}}while(scope=scope.parent_scope)}}}if(single_use&&fixed){if(fixed instanceof AST_Defun){fixed._squeezed=true;fixed=make_node(AST_Function,fixed,fixed)}var value;if(d.recursive_refs>0&&fixed.name instanceof AST_SymbolDefun){value=fixed.clone(true);var defun_def=value.name.definition();var lambda_def=value.variables.get(value.name.name);var name=lambda_def&&lambda_def.orig[0];if(!(name instanceof AST_SymbolLambda)){name=make_node(AST_SymbolLambda,value.name,value.name);name.scope=value;value.name=name;lambda_def=value.def_function(name)}value.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef&&node.definition()===defun_def){node.thedef=lambda_def;lambda_def.references.push(node)}}))}else{value=fixed.optimize(compressor);if(value===fixed)value=fixed.clone(true)}return value}if(fixed&&d.should_replace===undefined){var init;if(fixed instanceof AST_This){if(!(d.orig[0]instanceof AST_SymbolFunarg)&&all(d.references,function(ref){return d.scope===ref.scope})){init=fixed}}else{var ev=fixed.evaluate(compressor);if(ev!==fixed&&(compressor.option("unsafe_regexp")||!(ev instanceof RegExp))){init=make_node_from_constant(ev,fixed)}}if(init){var value_length=init.optimize(compressor).print_to_string().length;var fn;if(has_symbol_ref(fixed)){fn=function(){var result=init.optimize(compressor);return result===init?result.clone(true):result}}else{value_length=Math.min(value_length,fixed.print_to_string().length);fn=function(){var result=best_of_expression(init.optimize(compressor),fixed);return result===init||result===fixed?result.clone(true):result}}var name_length=d.name.length;var overhead=0;if(compressor.option("unused")&&!compressor.exposed(d)){overhead=(name_length+2+value_length)/(d.references.length-d.assignments)}d.should_replace=value_length<=name_length+overhead?fn:false}else{d.should_replace=false}}if(d.should_replace){return d.should_replace()}}return self;function has_symbol_ref(value){var found;value.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef)found=true;if(found)return true}));return found}});function is_atomic(lhs,self){return lhs instanceof AST_SymbolRef||lhs.TYPE===self.TYPE}OPT(AST_Undefined,function(self,compressor){if(compressor.option("unsafe_undefined")){var undef=find_variable(compressor,"undefined");if(undef){var ref=make_node(AST_SymbolRef,self,{name:"undefined",scope:undef.scope,thedef:undef});ref.is_undefined=true;return ref}}var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;return make_node(AST_UnaryPrefix,self,{operator:"void",expression:make_node(AST_Number,self,{value:0})})});OPT(AST_Infinity,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;if(compressor.option("keep_infinity")&&!(lhs&&!is_atomic(lhs,self))&&!find_variable(compressor,"Infinity"))return self;return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:1}),right:make_node(AST_Number,self,{value:0})})});OPT(AST_NaN,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&!is_atomic(lhs,self)||find_variable(compressor,"NaN")){return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:0}),right:make_node(AST_Number,self,{value:0})})}return self});function is_reachable(self,defs){var reachable=false;var find_ref=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_SymbolRef&&member(node.definition(),defs)){return reachable=true}});var scan_scope=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_Scope&&node!==self){var parent=scan_scope.parent();if(parent instanceof AST_Call&&parent.expression===node)return;node.walk(find_ref);return true}});self.walk(scan_scope);return reachable}var ASSIGN_OPS=["+","-","/","*","%",">>","<<",">>>","|","^","&"];var ASSIGN_OPS_COMMUTATIVE=["*","|","^","&"];OPT(AST_Assign,function(self,compressor){var def;if(compressor.option("dead_code")&&self.left instanceof AST_SymbolRef&&(def=self.left.definition()).scope===compressor.find_parent(AST_Lambda)){var level=0,node,parent=self;do{node=parent;parent=compressor.parent(level++);if(parent instanceof AST_Exit){if(in_try(level,parent instanceof AST_Throw))break;if(is_reachable(def.scope,[def]))break;if(self.operator=="=")return self.right;def.fixed=false;return make_node(AST_Binary,self,{operator:self.operator.slice(0,-1),left:self.left,right:self.right}).optimize(compressor)}}while(parent instanceof AST_Binary&&parent.right===node||parent instanceof AST_Sequence&&parent.tail_node()===node)}self=self.lift_sequences(compressor);if(self.operator=="="&&self.left instanceof AST_SymbolRef&&self.right instanceof AST_Binary){if(self.right.left instanceof AST_SymbolRef&&self.right.left.name==self.left.name&&member(self.right.operator,ASSIGN_OPS)){self.operator=self.right.operator+"=";self.right=self.right.right}else if(self.right.right instanceof AST_SymbolRef&&self.right.right.name==self.left.name&&member(self.right.operator,ASSIGN_OPS_COMMUTATIVE)&&!self.right.left.has_side_effects(compressor)){self.operator=self.right.operator+"=";self.right=self.right.left}}return self;function in_try(level,no_catch){var scope=self.left.definition().scope;var parent;while((parent=compressor.parent(level++))!==scope){if(parent instanceof AST_Try){if(parent.bfinally)return true;if(no_catch&&parent.bcatch)return true}}}});OPT(AST_Conditional,function(self,compressor){if(!compressor.option("conditionals"))return self;if(self.condition instanceof AST_Sequence){var expressions=self.condition.expressions.slice();self.condition=expressions.pop();expressions.push(self);return make_sequence(self,expressions)}var cond=self.condition.evaluate(compressor);if(cond!==self.condition){if(cond){compressor.warn("Condition always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.consequent)}else{compressor.warn("Condition always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.alternative)}}var negated=cond.negate(compressor,first_in_statement(compressor));if(best_of(compressor,cond,negated)===negated){self=make_node(AST_Conditional,self,{condition:negated,consequent:self.alternative,alternative:self.consequent})}var condition=self.condition;var consequent=self.consequent;var alternative=self.alternative;if(condition instanceof AST_SymbolRef&&consequent instanceof AST_SymbolRef&&condition.definition()===consequent.definition()){return make_node(AST_Binary,self,{operator:"||",left:condition,right:alternative})}if(consequent instanceof AST_Assign&&alternative instanceof AST_Assign&&consequent.operator==alternative.operator&&consequent.left.equivalent_to(alternative.left)&&(!self.condition.has_side_effects(compressor)||consequent.operator=="="&&!consequent.left.has_side_effects(compressor))){return make_node(AST_Assign,self,{operator:consequent.operator,left:consequent.left,right:make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.right,alternative:alternative.right})})}var arg_index;if(consequent instanceof AST_Call&&alternative.TYPE===consequent.TYPE&&consequent.args.length>0&&consequent.args.length==alternative.args.length&&consequent.expression.equivalent_to(alternative.expression)&&!self.condition.has_side_effects(compressor)&&!consequent.expression.has_side_effects(compressor)&&typeof(arg_index=single_arg_diff())=="number"){var node=consequent.clone();node.args[arg_index]=make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.args[arg_index],alternative:alternative.args[arg_index]});return node}if(consequent instanceof AST_Conditional&&consequent.alternative.equivalent_to(alternative)){return make_node(AST_Conditional,self,{condition:make_node(AST_Binary,self,{left:self.condition,operator:"&&",right:consequent.condition}),consequent:consequent.consequent,alternative:alternative})}if(consequent.equivalent_to(alternative)){return make_sequence(self,[self.condition,consequent]).optimize(compressor)}if(consequent instanceof AST_Binary&&consequent.operator=="||"&&consequent.right.equivalent_to(alternative)){return make_node(AST_Binary,self,{operator:"||",left:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:consequent.left}),right:alternative}).optimize(compressor)}var in_bool=compressor.in_boolean_context();if(is_true(self.consequent)){if(is_false(self.alternative)){return booleanize(self.condition)}return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition),right:self.alternative})}if(is_false(self.consequent)){if(is_true(self.alternative)){return booleanize(self.condition.negate(compressor))}return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition.negate(compressor)),right:self.alternative})}if(is_true(self.alternative)){return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition.negate(compressor)),right:self.consequent})}if(is_false(self.alternative)){return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition),right:self.consequent})}return self;function booleanize(node){if(node.is_boolean())return node;return make_node(AST_UnaryPrefix,node,{operator:"!",expression:node.negate(compressor)})}function is_true(node){return node instanceof AST_True||in_bool&&node instanceof AST_Constant&&node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&!node.expression.getValue()}function is_false(node){return node instanceof AST_False||in_bool&&node instanceof AST_Constant&&!node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&node.expression.getValue()}function single_arg_diff(){var a=consequent.args;var b=alternative.args;for(var i=0,len=a.length;i<len;i++){if(!a[i].equivalent_to(b[i])){for(var j=i+1;j<len;j++){if(!a[j].equivalent_to(b[j]))return}return i}}}});OPT(AST_Boolean,function(self,compressor){if(compressor.in_boolean_context())return make_node(AST_Number,self,{value:+self.value});if(compressor.option("booleans")){var p=compressor.parent();if(p instanceof AST_Binary&&(p.operator=="=="||p.operator=="!=")){compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]",{operator:p.operator,value:self.value,file:p.start.file,line:p.start.line,col:p.start.col});return make_node(AST_Number,self,{value:+self.value})}return make_node(AST_UnaryPrefix,self,{operator:"!",expression:make_node(AST_Number,self,{value:1-self.value})})}return self});OPT(AST_Sub,function(self,compressor){var expr=self.expression;var prop=self.property;if(compressor.option("properties")){var key=prop.evaluate(compressor);if(key!==prop){if(typeof key=="string"){if(key=="undefined"){key=undefined}else{var value=parseFloat(key);if(value.toString()==key){key=value}}}prop=self.property=best_of_expression(prop,make_node_from_constant(key,prop).transform(compressor));var property=""+key;if(is_identifier_string(property)&&property.length<=prop.print_to_string().length+1){return make_node(AST_Dot,self,{expression:expr,property:property}).optimize(compressor)}}}if(is_lhs(self,compressor.parent()))return self;if(key!==prop){var sub=self.flatten_object(property,compressor);if(sub){expr=self.expression=sub.expression;prop=self.property=sub.property}}if(compressor.option("properties")&&compressor.option("side_effects")&&prop instanceof AST_Number&&expr instanceof AST_Array){var index=prop.getValue();var elements=expr.elements;if(index in elements){var flatten=true;var values=[];for(var i=elements.length;--i>index;){var value=elements[i].drop_side_effect_free(compressor);if(value){values.unshift(value);if(flatten&&value.has_side_effects(compressor))flatten=false}}var retValue=elements[index];retValue=retValue instanceof AST_Hole?make_node(AST_Undefined,retValue):retValue;if(!flatten)values.unshift(retValue);while(--i>=0){var value=elements[i].drop_side_effect_free(compressor);if(value)values.unshift(value);else index--}if(flatten){values.push(retValue);return make_sequence(self,values).optimize(compressor)}else return make_node(AST_Sub,self,{expression:make_node(AST_Array,expr,{elements:values}),property:make_node(AST_Number,prop,{value:index})})}}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});AST_Lambda.DEFMETHOD("contains_this",function(){var result;var self=this;self.walk(new TreeWalker(function(node){if(result)return true;if(node instanceof AST_This)return result=true;if(node!==self&&node instanceof AST_Scope)return true}));return result});AST_PropAccess.DEFMETHOD("flatten_object",function(key,compressor){if(!compressor.option("properties"))return;var expr=this.expression;if(expr instanceof AST_Object){var props=expr.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(""+prop.key==key){if(!all(props,function(prop){return prop instanceof AST_ObjectKeyVal}))break;var value=prop.value;if(value instanceof AST_Function&&!(compressor.parent()instanceof AST_New)&&value.contains_this())break;return make_node(AST_Sub,this,{expression:make_node(AST_Array,expr,{elements:props.map(function(prop){return prop.value})}),property:make_node(AST_Number,this,{value:i})})}}}});OPT(AST_Dot,function(self,compressor){if(self.property=="arguments"||self.property=="caller"){compressor.warn("Function.protoype.{prop} not supported [{file}:{line},{col}]",{prop:self.property,file:self.start.file,line:self.start.line,col:self.start.col})}var def=self.resolve_defines(compressor);if(def){return def.optimize(compressor)}if(is_lhs(self,compressor.parent()))return self;if(compressor.option("unsafe_proto")&&self.expression instanceof AST_Dot&&self.expression.property=="prototype"){var exp=self.expression.expression;if(is_undeclared_ref(exp))switch(exp.name){case"Array":self.expression=make_node(AST_Array,self.expression,{elements:[]});break;case"Function":self.expression=make_node(AST_Function,self.expression,{argnames:[],body:[]});break;case"Number":self.expression=make_node(AST_Number,self.expression,{value:0});break;case"Object":self.expression=make_node(AST_Object,self.expression,{properties:[]});break;case"RegExp":self.expression=make_node(AST_RegExp,self.expression,{value:/t/});break;case"String":self.expression=make_node(AST_String,self.expression,{value:""});break}}var sub=self.flatten_object(self.property,compressor);if(sub)return sub.optimize(compressor);var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});function literals_in_boolean_context(self,compressor){if(compressor.in_boolean_context()){return best_of(compressor,self,make_sequence(self,[self,make_node(AST_True,self)]).optimize(compressor))}return self}OPT(AST_Array,literals_in_boolean_context);OPT(AST_Object,literals_in_boolean_context);OPT(AST_RegExp,literals_in_boolean_context);OPT(AST_Return,function(self,compressor){if(self.value&&is_undefined(self.value,compressor)){self.value=null}return self});OPT(AST_VarDef,function(self,compressor){var defines=compressor.option("global_defs");if(defines&&HOP(defines,self.name.name)){compressor.warn("global_defs "+self.name.name+" redefined [{file}:{line},{col}]",self.start)}return self})})();
+"use strict";function Compressor(options,false_by_default){if(!(this instanceof Compressor))return new Compressor(options,false_by_default);TreeTransformer.call(this,this.before,this.after);this.options=defaults(options,{arguments:!false_by_default,booleans:!false_by_default,collapse_vars:!false_by_default,comparisons:!false_by_default,conditionals:!false_by_default,dead_code:!false_by_default,drop_console:false,drop_debugger:!false_by_default,evaluate:!false_by_default,expression:false,global_defs:{},hoist_funs:false,hoist_props:!false_by_default,hoist_vars:false,ie8:false,if_return:!false_by_default,inline:!false_by_default,join_vars:!false_by_default,keep_fargs:true,keep_fnames:false,keep_infinity:false,loops:!false_by_default,negate_iife:!false_by_default,passes:1,properties:!false_by_default,pure_getters:!false_by_default&&"strict",pure_funcs:null,reduce_funcs:!false_by_default,reduce_vars:!false_by_default,sequences:!false_by_default,side_effects:!false_by_default,switches:!false_by_default,top_retain:null,toplevel:!!(options&&options["top_retain"]),typeofs:!false_by_default,unsafe:false,unsafe_comps:false,unsafe_Function:false,unsafe_math:false,unsafe_proto:false,unsafe_regexp:false,unsafe_undefined:false,unused:!false_by_default,warnings:false},true);var global_defs=this.options["global_defs"];if(typeof global_defs=="object")for(var key in global_defs){if(/^@/.test(key)&&HOP(global_defs,key)){global_defs[key.slice(1)]=parse(global_defs[key],{expression:true})}}if(this.options["inline"]===true)this.options["inline"]=3;var pure_funcs=this.options["pure_funcs"];if(typeof pure_funcs=="function"){this.pure_funcs=pure_funcs}else{this.pure_funcs=pure_funcs?function(node){return pure_funcs.indexOf(node.expression.print_to_string())<0}:return_true}var top_retain=this.options["top_retain"];if(top_retain instanceof RegExp){this.top_retain=function(def){return top_retain.test(def.name)}}else if(typeof top_retain=="function"){this.top_retain=top_retain}else if(top_retain){if(typeof top_retain=="string"){top_retain=top_retain.split(/,/)}this.top_retain=function(def){return top_retain.indexOf(def.name)>=0}}var toplevel=this.options["toplevel"];this.toplevel=typeof toplevel=="string"?{funcs:/funcs/.test(toplevel),vars:/vars/.test(toplevel)}:{funcs:toplevel,vars:toplevel};var sequences=this.options["sequences"];this.sequences_limit=sequences==1?800:sequences|0;this.warnings_produced={}}Compressor.prototype=new TreeTransformer;merge(Compressor.prototype,{option:function(key){return this.options[key]},exposed:function(def){if(def.global)for(var i=0,len=def.orig.length;i<len;i++)if(!this.toplevel[def.orig[i]instanceof AST_SymbolDefun?"funcs":"vars"])return true;return false},in_boolean_context:function(){if(!this.option("booleans"))return false;var self=this.self();for(var i=0,p;p=this.parent(i);i++){if(p instanceof AST_SimpleStatement||p instanceof AST_Conditional&&p.condition===self||p instanceof AST_DWLoop&&p.condition===self||p instanceof AST_For&&p.condition===self||p instanceof AST_If&&p.condition===self||p instanceof AST_UnaryPrefix&&p.operator=="!"&&p.expression===self){return true}if(p instanceof AST_Binary&&(p.operator=="&&"||p.operator=="||")||p instanceof AST_Conditional||p.tail_node()===self){self=p}else{return false}}},compress:function(node){if(this.option("expression")){node.process_expression(true)}var passes=+this.options.passes||1;var min_count=1/0;var stopping=false;var mangle={ie8:this.option("ie8")};for(var pass=0;pass<passes;pass++){node.figure_out_scope(mangle);if(pass>0||this.option("reduce_vars"))node.reset_opt_flags(this);node=node.transform(this);if(passes>1){var count=0;node.walk(new TreeWalker(function(){count++}));this.info("pass "+pass+": last_count: "+min_count+", count: "+count);if(count<min_count){min_count=count;stopping=false}else if(stopping){break}else{stopping=true}}}if(this.option("expression")){node.process_expression(false)}return node},info:function(){if(this.options.warnings=="verbose"){AST_Node.warn.apply(AST_Node,arguments)}},warn:function(text,props){if(this.options.warnings){var message=string_template(text,props);if(!(message in this.warnings_produced)){this.warnings_produced[message]=true;AST_Node.warn.apply(AST_Node,arguments)}}},clear_warnings:function(){this.warnings_produced={}},before:function(node,descend,in_list){if(node._squeezed)return node;var was_scope=false;if(node instanceof AST_Scope){node=node.hoist_properties(this);node=node.hoist_declarations(this);was_scope=true}descend(node,this);descend(node,this);var opt=node.optimize(this);if(was_scope&&opt instanceof AST_Scope){opt.drop_unused(this);descend(opt,this)}if(opt===node)opt._squeezed=true;return opt}});(function(){function OPT(node,optimizer){node.DEFMETHOD("optimize",function(compressor){var self=this;if(self._optimized)return self;if(compressor.has_directive("use asm"))return self;var opt=optimizer(self,compressor);opt._optimized=true;return opt})}OPT(AST_Node,function(self,compressor){return self});AST_Node.DEFMETHOD("equivalent_to",function(node){return this.TYPE==node.TYPE&&this.print_to_string()==node.print_to_string()});AST_Scope.DEFMETHOD("process_expression",function(insert,compressor){var self=this;var tt=new TreeTransformer(function(node){if(insert&&node instanceof AST_SimpleStatement){return make_node(AST_Return,node,{value:node.body})}if(!insert&&node instanceof AST_Return){if(compressor){var value=node.value&&node.value.drop_side_effect_free(compressor,true);return value?make_node(AST_SimpleStatement,node,{body:value}):make_node(AST_EmptyStatement,node)}return make_node(AST_SimpleStatement,node,{body:node.value||make_node(AST_UnaryPrefix,node,{operator:"void",expression:make_node(AST_Number,node,{value:0})})})}if(node instanceof AST_Lambda&&node!==self){return node}if(node instanceof AST_Block){var index=node.body.length-1;if(index>=0){node.body[index]=node.body[index].transform(tt)}}else if(node instanceof AST_If){node.body=node.body.transform(tt);if(node.alternative){node.alternative=node.alternative.transform(tt)}}else if(node instanceof AST_With){node.body=node.body.transform(tt)}return node});self.transform(tt)});(function(def){def(AST_Node,noop);function reset_def(compressor,def){def.assignments=0;def.chained=false;def.direct_access=false;def.escaped=false;if(def.scope.uses_eval||def.scope.uses_with){def.fixed=false}else if(!compressor.exposed(def)){def.fixed=def.init}else{def.fixed=false}def.recursive_refs=0;def.references=[];def.should_replace=undefined;def.single_use=undefined}function reset_variables(tw,compressor,node){node.variables.each(function(def){reset_def(compressor,def);if(def.fixed===null){def.safe_ids=tw.safe_ids;mark(tw,def,true)}else if(def.fixed){tw.loop_ids[def.id]=tw.in_loop;mark(tw,def,true)}})}function push(tw){tw.safe_ids=Object.create(tw.safe_ids)}function pop(tw){tw.safe_ids=Object.getPrototypeOf(tw.safe_ids)}function mark(tw,def,safe){tw.safe_ids[def.id]=safe}function safe_to_read(tw,def){if(tw.safe_ids[def.id]){if(def.fixed==null){var orig=def.orig[0];if(orig instanceof AST_SymbolFunarg||orig.name=="arguments")return false;def.fixed=make_node(AST_Undefined,orig)}return true}return def.fixed instanceof AST_Defun}function safe_to_assign(tw,def,value){if(def.fixed===undefined)return true;if(def.fixed===null&&def.safe_ids){def.safe_ids[def.id]=false;delete def.safe_ids;return true}if(!HOP(tw.safe_ids,def.id))return false;if(!safe_to_read(tw,def))return false;if(def.fixed===false)return false;if(def.fixed!=null&&(!value||def.references.length>def.assignments))return false;return all(def.orig,function(sym){return!(sym instanceof AST_SymbolDefun||sym instanceof AST_SymbolLambda)})}function ref_once(tw,compressor,def){return compressor.option("unused")&&!def.scope.uses_eval&&!def.scope.uses_with&&def.references.length-def.recursive_refs==1&&tw.loop_ids[def.id]===tw.in_loop}function is_immutable(value){if(!value)return false;return value.is_constant()||value instanceof AST_Lambda||value instanceof AST_This}function read_property(obj,key){key=get_value(key);if(key instanceof AST_Node)return;var value;if(obj instanceof AST_Array){var elements=obj.elements;if(key=="length")return make_node_from_constant(elements.length,obj);if(typeof key=="number"&&key in elements)value=elements[key]}else if(obj instanceof AST_Object){key=""+key;var props=obj.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(!(prop instanceof AST_ObjectKeyVal))return;if(!value&&props[i].key===key)value=props[i].value}}return value instanceof AST_SymbolRef&&value.fixed_value()||value}function is_modified(tw,node,value,level,immutable){var parent=tw.parent(level);if(is_lhs(node,parent)||!immutable&&parent instanceof AST_Call&&parent.expression===node&&(!(value instanceof AST_Function)||!(parent instanceof AST_New)&&value.contains_this())){return true}else if(parent instanceof AST_Array){return is_modified(tw,parent,parent,level+1)}else if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);return is_modified(tw,obj,obj,level+2)}else if(parent instanceof AST_PropAccess&&parent.expression===node){return!immutable&&is_modified(tw,parent,read_property(value,parent.property),level+1)}}function mark_escaped(tw,d,scope,node,value,level,depth){var parent=tw.parent(level);if(value&&value.is_constant())return;if(parent instanceof AST_Assign&&parent.operator=="="&&node===parent.right||parent instanceof AST_Call&&node!==parent.expression||parent instanceof AST_Exit&&node===parent.value&&node.scope!==d.scope||parent instanceof AST_VarDef&&node===parent.value){if(depth>1&&!(value&&value.is_constant_expression(scope)))depth=1;if(!d.escaped||d.escaped>depth)d.escaped=depth;return}else if(parent instanceof AST_Array||parent instanceof AST_Binary&&lazy_op(parent.operator)||parent instanceof AST_Conditional&&node!==parent.condition||parent instanceof AST_Sequence&&node===parent.tail_node()){mark_escaped(tw,d,scope,parent,parent,level+1,depth)}else if(parent instanceof AST_ObjectKeyVal&&node===parent.value){var obj=tw.parent(level+1);mark_escaped(tw,d,scope,obj,obj,level+2,depth)}else if(parent instanceof AST_PropAccess&&node===parent.expression){value=read_property(value,parent.property);mark_escaped(tw,d,scope,parent,value,level+1,depth+1);if(value)return}if(level==0)d.direct_access=true}var suppressor=new TreeWalker(function(node){if(!(node instanceof AST_Symbol))return;var d=node.definition();if(!d)return;if(node instanceof AST_SymbolRef)d.references.push(node);d.fixed=false});def(AST_Accessor,function(tw,descend,compressor){push(tw);reset_variables(tw,compressor,this);descend();pop(tw);return true});def(AST_Assign,function(tw){var node=this;if(!(node.left instanceof AST_SymbolRef))return;var d=node.left.definition();var fixed=d.fixed;if(!fixed&&node.operator!="=")return;if(!safe_to_assign(tw,d,node.right))return;d.references.push(node.left);d.assignments++;if(node.operator!="=")d.chained=true;d.fixed=node.operator=="="?function(){return node.right}:function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:fixed instanceof AST_Node?fixed:fixed(),right:node.right})};mark(tw,d,false);node.right.walk(tw);mark(tw,d,true);return true});def(AST_Binary,function(tw){if(!lazy_op(this.operator))return;this.left.walk(tw);push(tw);this.right.walk(tw);pop(tw);return true});def(AST_Conditional,function(tw){this.condition.walk(tw);push(tw);this.consequent.walk(tw);pop(tw);push(tw);this.alternative.walk(tw);pop(tw);return true});def(AST_Defun,function(tw,descend,compressor){this.inlined=false;var save_ids=tw.safe_ids;tw.safe_ids=Object.create(null);reset_variables(tw,compressor,this);descend();tw.safe_ids=save_ids;return true});def(AST_Do,function(tw){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);this.condition.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_For,function(tw){if(this.init)this.init.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;if(this.condition){push(tw);this.condition.walk(tw);pop(tw)}push(tw);this.body.walk(tw);pop(tw);if(this.step){push(tw);this.step.walk(tw);pop(tw)}tw.in_loop=saved_loop;return true});def(AST_ForIn,function(tw){this.init.walk(suppressor);this.object.walk(tw);var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.body.walk(tw);pop(tw);tw.in_loop=saved_loop;return true});def(AST_Function,function(tw,descend,compressor){var node=this;node.inlined=false;push(tw);reset_variables(tw,compressor,node);var iife;if(!node.name&&(iife=tw.parent())instanceof AST_Call&&iife.expression===node){node.argnames.forEach(function(arg,i){var d=arg.definition();if(!node.uses_arguments&&d.fixed===undefined){d.fixed=function(){return iife.args[i]||make_node(AST_Undefined,iife)};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,true)}else{d.fixed=false}})}descend();pop(tw);return true});def(AST_If,function(tw){this.condition.walk(tw);push(tw);this.body.walk(tw);pop(tw);if(this.alternative){push(tw);this.alternative.walk(tw);pop(tw)}return true});def(AST_LabeledStatement,function(tw){push(tw);this.body.walk(tw);pop(tw);return true});def(AST_SwitchBranch,function(tw,descend){push(tw);descend();pop(tw);return true});def(AST_SymbolCatch,function(){this.definition().fixed=false});def(AST_SymbolRef,function(tw,descend,compressor){var d=this.definition();d.references.push(this);if(d.references.length==1&&!d.fixed&&d.orig[0]instanceof AST_SymbolDefun){tw.loop_ids[d.id]=tw.in_loop}var value;if(d.fixed===undefined||!safe_to_read(tw,d)||d.single_use=="m"){d.fixed=false}else if(d.fixed){value=this.fixed_value();if(value instanceof AST_Lambda&&recursive_ref(tw,d)){d.recursive_refs++}else if(value&&ref_once(tw,compressor,d)){d.single_use=value instanceof AST_Lambda||d.scope===this.scope&&value.is_constant_expression()}else{d.single_use=false}if(is_modified(tw,this,value,0,is_immutable(value))){if(d.single_use){d.single_use="m"}else{d.fixed=false}}}mark_escaped(tw,d,this.scope,this,value,0,1)});def(AST_Toplevel,function(tw,descend,compressor){this.globals.each(function(def){reset_def(compressor,def)});reset_variables(tw,compressor,this)});def(AST_Try,function(tw){push(tw);walk_body(this,tw);pop(tw);if(this.bcatch){push(tw);this.bcatch.walk(tw);pop(tw)}if(this.bfinally)this.bfinally.walk(tw);return true});def(AST_Unary,function(tw,descend){var node=this;if(node.operator!="++"&&node.operator!="--")return;if(!(node.expression instanceof AST_SymbolRef))return;var d=node.expression.definition();var fixed=d.fixed;if(!fixed)return;if(!safe_to_assign(tw,d,true))return;d.references.push(node.expression);d.assignments++;d.chained=true;d.fixed=function(){return make_node(AST_Binary,node,{operator:node.operator.slice(0,-1),left:make_node(AST_UnaryPrefix,node,{operator:"+",expression:fixed instanceof AST_Node?fixed:fixed()}),right:make_node(AST_Number,node,{value:1})})};mark(tw,d,true);return true});def(AST_VarDef,function(tw,descend){var node=this;var d=node.name.definition();if(node.value){if(safe_to_assign(tw,d,node.value)){d.fixed=function(){return node.value};tw.loop_ids[d.id]=tw.in_loop;mark(tw,d,false);descend();mark(tw,d,true);return true}else{d.fixed=false}}});def(AST_While,function(tw){var saved_loop=tw.in_loop;tw.in_loop=this;push(tw);this.condition.walk(tw);this.body.walk(tw);pop(tw);tw.in_loop=saved_loop;return true})})(function(node,func){node.DEFMETHOD("reduce_vars",func)});AST_Toplevel.DEFMETHOD("reset_opt_flags",function(compressor){var reduce_vars=compressor.option("reduce_vars");var tw=new TreeWalker(function(node,descend){node._squeezed=false;node._optimized=false;if(reduce_vars)return node.reduce_vars(tw,descend,compressor)});tw.safe_ids=Object.create(null);tw.in_loop=null;tw.loop_ids=Object.create(null);this.walk(tw)});AST_Symbol.DEFMETHOD("fixed_value",function(){var fixed=this.definition().fixed;if(!fixed||fixed instanceof AST_Node)return fixed;return fixed()});AST_SymbolRef.DEFMETHOD("is_immutable",function(){var orig=this.definition().orig;return orig.length==1&&orig[0]instanceof AST_SymbolLambda});function is_lhs_read_only(lhs){if(lhs instanceof AST_This)return true;if(lhs instanceof AST_SymbolRef)return lhs.definition().orig[0]instanceof AST_SymbolLambda;if(lhs instanceof AST_PropAccess){lhs=lhs.expression;if(lhs instanceof AST_SymbolRef){if(lhs.is_immutable())return false;lhs=lhs.fixed_value()}if(!lhs)return true;if(lhs.is_constant())return true;return is_lhs_read_only(lhs)}return false}function find_variable(compressor,name){var scope,i=0;while(scope=compressor.parent(i++)){if(scope instanceof AST_Scope)break;if(scope instanceof AST_Catch){scope=scope.argname.definition().scope;break}}return scope.find_variable(name)}function make_node(ctor,orig,props){if(!props)props={};if(orig){if(!props.start)props.start=orig.start;if(!props.end)props.end=orig.end}return new ctor(props)}function make_sequence(orig,expressions){if(expressions.length==1)return expressions[0];return make_node(AST_Sequence,orig,{expressions:expressions.reduce(merge_sequence,[])})}function make_node_from_constant(val,orig){switch(typeof val){case"string":return make_node(AST_String,orig,{value:val});case"number":if(isNaN(val))return make_node(AST_NaN,orig);if(isFinite(val)){return 1/val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Number,orig,{value:-val})}):make_node(AST_Number,orig,{value:val})}return val<0?make_node(AST_UnaryPrefix,orig,{operator:"-",expression:make_node(AST_Infinity,orig)}):make_node(AST_Infinity,orig);case"boolean":return make_node(val?AST_True:AST_False,orig);case"undefined":return make_node(AST_Undefined,orig);default:if(val===null){return make_node(AST_Null,orig,{value:null})}if(val instanceof RegExp){return make_node(AST_RegExp,orig,{value:val})}throw new Error(string_template("Can't handle constant of type: {type}",{type:typeof val}))}}function maintain_this_binding(parent,orig,val){if(parent instanceof AST_UnaryPrefix&&parent.operator=="delete"||parent instanceof AST_Call&&parent.expression===orig&&(val instanceof AST_PropAccess||val instanceof AST_SymbolRef&&val.name=="eval")){return make_sequence(orig,[make_node(AST_Number,orig,{value:0}),val])}return val}function merge_sequence(array,node){if(node instanceof AST_Sequence){array.push.apply(array,node.expressions)}else{array.push(node)}return array}function as_statement_array(thing){if(thing===null)return[];if(thing instanceof AST_BlockStatement)return thing.body;if(thing instanceof AST_EmptyStatement)return[];if(thing instanceof AST_Statement)return[thing];throw new Error("Can't convert thing to statement array")}function is_empty(thing){if(thing===null)return true;if(thing instanceof AST_EmptyStatement)return true;if(thing instanceof AST_BlockStatement)return thing.body.length==0;return false}function loop_body(x){if(x instanceof AST_IterationStatement){return x.body instanceof AST_BlockStatement?x.body:x}return x}function root_expr(prop){while(prop instanceof AST_PropAccess)prop=prop.expression;return prop}function is_iife_call(node){if(node.TYPE!="Call")return false;return node.expression instanceof AST_Function||is_iife_call(node.expression)}function is_undeclared_ref(node){return node instanceof AST_SymbolRef&&node.definition().undeclared}var global_names=makePredicate("Array Boolean clearInterval clearTimeout console Date decodeURI decodeURIComponent encodeURI encodeURIComponent Error escape eval EvalError Function isFinite isNaN JSON Math Number parseFloat parseInt RangeError ReferenceError RegExp Object setInterval setTimeout String SyntaxError TypeError unescape URIError");AST_SymbolRef.DEFMETHOD("is_declared",function(compressor){return!this.definition().undeclared||compressor.option("unsafe")&&global_names(this.name)});var identifier_atom=makePredicate("Infinity NaN undefined");function is_identifier_atom(node){return node instanceof AST_Infinity||node instanceof AST_NaN||node instanceof AST_Undefined}function tighten_body(statements,compressor){var in_loop,in_try,scope;find_loop_scope_try();var CHANGED,max_iter=10;do{CHANGED=false;eliminate_spurious_blocks(statements);if(compressor.option("dead_code")){eliminate_dead_code(statements,compressor)}if(compressor.option("if_return")){handle_if_return(statements,compressor)}if(compressor.sequences_limit>0){sequencesize(statements,compressor);sequencesize_2(statements,compressor)}if(compressor.option("join_vars")){join_consecutive_vars(statements)}if(compressor.option("collapse_vars")){collapse(statements,compressor)}}while(CHANGED&&max_iter-- >0);function find_loop_scope_try(){var node=compressor.self(),level=0;do{if(node instanceof AST_Catch||node instanceof AST_Finally){level++}else if(node instanceof AST_IterationStatement){in_loop=true}else if(node instanceof AST_Scope){scope=node;break}else if(node instanceof AST_Try){in_try=true}}while(node=compressor.parent(level++))}function collapse(statements,compressor){if(scope.uses_eval||scope.uses_with)return statements;var args;var candidates=[];var stat_index=statements.length;var scanner=new TreeTransformer(function(node,descend){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return handle_custom_scan_order(node);hit=true;stop_after=find_stop(node,0);if(stop_after===node)abort=true;return node}var parent=scanner.parent();if(node instanceof AST_Assign&&node.operator!="="&&lhs.equivalent_to(node.left)||node instanceof AST_Call&&lhs instanceof AST_PropAccess&&lhs.equivalent_to(node.expression)||node instanceof AST_Debugger||node instanceof AST_IterationStatement&&!(node instanceof AST_For)||node instanceof AST_LoopControl||node instanceof AST_Try||node instanceof AST_With||parent instanceof AST_For&&node!==parent.init||!replace_all&&(node instanceof AST_SymbolRef&&!node.is_declared(compressor))){abort=true;return node}if(!stop_if_hit&&(parent instanceof AST_Binary&&lazy_op(parent.operator)&&parent.left!==node||parent instanceof AST_Conditional&&parent.condition!==node||parent instanceof AST_If&&parent.condition!==node)){stop_if_hit=parent}var hit_lhs,hit_rhs;if(can_replace&&!(node instanceof AST_SymbolDeclaration)&&(scan_lhs&&(hit_lhs=lhs.equivalent_to(node))||scan_rhs&&(hit_rhs=rhs.equivalent_to(node)))){if(stop_if_hit&&(hit_rhs||!lhs_local||!replace_all)){abort=true;return node}if(is_lhs(node,parent)){if(value_def)replaced++;return node}CHANGED=abort=true;replaced++;compressor.info("Collapsing {name} [{file}:{line},{col}]",{name:node.print_to_string(),file:node.start.file,line:node.start.line,col:node.start.col});if(candidate instanceof AST_UnaryPostfix){return make_node(AST_UnaryPrefix,candidate,candidate)}if(candidate instanceof AST_VarDef){if(value_def){abort=false;return node}var def=candidate.name.definition();var value=candidate.value;if(def.references.length-def.replaced==1&&!compressor.exposed(def)){def.replaced++;if(funarg&&is_identifier_atom(value)){return value.transform(compressor)}else{return maintain_this_binding(parent,node,value)}}return make_node(AST_Assign,candidate,{operator:"=",left:make_node(AST_SymbolRef,candidate.name,candidate.name),right:value})}candidate.write_only=false;return candidate}var sym;if(node instanceof AST_Call||node instanceof AST_Exit&&(side_effects||lhs instanceof AST_PropAccess||may_modify(lhs))||node instanceof AST_PropAccess&&(side_effects||node.expression.may_throw_on_access(compressor))||node instanceof AST_SymbolRef&&(symbol_in_lvalues(node)||side_effects&&may_modify(node))||node instanceof AST_VarDef&&node.value&&(node.name.name in lvalues||side_effects&&may_modify(node.name))||(sym=is_lhs(node.left,node))&&(sym instanceof AST_PropAccess||sym.name in lvalues)||may_throw&&(in_try?node.has_side_effects(compressor):side_effects_external(node))){stop_after=node;if(node instanceof AST_Scope)abort=true}return handle_custom_scan_order(node)},function(node){if(abort)return;if(stop_after===node)abort=true;if(stop_if_hit===node)stop_if_hit=null});var multi_replacer=new TreeTransformer(function(node){if(abort)return node;if(!hit){if(node!==hit_stack[hit_index])return node;hit_index++;if(hit_index<hit_stack.length)return;hit=true;return node}if(node instanceof AST_SymbolRef&&node.name==def.name){if(!--replaced)abort=true;if(is_lhs(node,multi_replacer.parent()))return node;def.replaced++;value_def.replaced--;return candidate.value}if(node instanceof AST_Default||node instanceof AST_Scope)return node});while(--stat_index>=0){if(stat_index==0&&compressor.option("unused"))extract_args();var hit_stack=[];extract_candidates(statements[stat_index]);while(candidates.length>0){hit_stack=candidates.pop();var hit_index=0;var candidate=hit_stack[hit_stack.length-1];var value_def=null;var stop_after=null;var stop_if_hit=null;var lhs=get_lhs(candidate);var rhs=get_rhs(candidate);var side_effects=lhs&&lhs.has_side_effects(compressor);var scan_lhs=lhs&&!side_effects&&!is_lhs_read_only(lhs);var scan_rhs=rhs&&foldable(rhs);if(!scan_lhs&&!scan_rhs)continue;var lvalues=get_lvalues(candidate);var lhs_local=is_lhs_local(lhs);if(!side_effects)side_effects=value_has_side_effects(candidate);var replace_all=replace_all_symbols();var may_throw=candidate.may_throw(compressor);var funarg=candidate.name instanceof AST_SymbolFunarg;var hit=funarg;var abort=false,replaced=0,can_replace=!args||!hit;if(!can_replace){for(var j=compressor.self().argnames.lastIndexOf(candidate.name)+1;!abort&&j<args.length;j++){args[j].transform(scanner)}can_replace=true}for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(scanner)}if(value_def){var def=candidate.name.definition();if(abort&&def.references.length-def.replaced>replaced)replaced=false;else{abort=false;hit_index=0;hit=funarg;for(var i=stat_index;!abort&&i<statements.length;i++){statements[i].transform(multi_replacer)}value_def.single_use=false}}if(replaced&&!remove_candidate(candidate))statements.splice(stat_index,1)}}function handle_custom_scan_order(node){if(node instanceof AST_Scope)return node;if(node instanceof AST_Switch){node.expression=node.expression.transform(scanner);for(var i=0,len=node.body.length;!abort&&i<len;i++){var branch=node.body[i];if(branch instanceof AST_Case){if(!hit){if(branch!==hit_stack[hit_index])continue;hit_index++}branch.expression=branch.expression.transform(scanner);if(!replace_all)break}}abort=true;return node}}function extract_args(){var iife,fn=compressor.self();if(fn instanceof AST_Function&&!fn.name&&!fn.uses_arguments&&!fn.uses_eval&&(iife=compressor.parent())instanceof AST_Call&&iife.expression===fn){var fn_strict=compressor.has_directive("use strict");if(fn_strict&&!member(fn_strict,fn.body))fn_strict=false;var len=fn.argnames.length;args=iife.args.slice(len);var names=Object.create(null);for(var i=len;--i>=0;){var sym=fn.argnames[i];var arg=iife.args[i];args.unshift(make_node(AST_VarDef,sym,{name:sym,value:arg}));if(sym.name in names)continue;names[sym.name]=true;if(!arg)arg=make_node(AST_Undefined,sym).transform(compressor);else{var tw=new TreeWalker(function(node){if(!arg)return true;if(node instanceof AST_SymbolRef&&fn.variables.has(node.name)){var s=node.definition().scope;if(s!==scope)while(s=s.parent_scope){if(s===scope)return true}arg=null}if(node instanceof AST_This&&(fn_strict||!tw.find_parent(AST_Scope))){arg=null;return true}});arg.walk(tw)}if(arg)candidates.unshift([make_node(AST_VarDef,sym,{name:sym,value:arg})])}}}function extract_candidates(expr){hit_stack.push(expr);if(expr instanceof AST_Assign){candidates.push(hit_stack.slice());extract_candidates(expr.right)}else if(expr instanceof AST_Binary){extract_candidates(expr.left);extract_candidates(expr.right)}else if(expr instanceof AST_Call){extract_candidates(expr.expression);expr.args.forEach(extract_candidates)}else if(expr instanceof AST_Case){extract_candidates(expr.expression)}else if(expr instanceof AST_Conditional){extract_candidates(expr.condition);extract_candidates(expr.consequent);extract_candidates(expr.alternative)}else if(expr instanceof AST_Definitions){expr.definitions.forEach(extract_candidates)}else if(expr instanceof AST_DWLoop){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_Exit){if(expr.value)extract_candidates(expr.value)}else if(expr instanceof AST_For){if(expr.init)extract_candidates(expr.init);if(expr.condition)extract_candidates(expr.condition);if(expr.step)extract_candidates(expr.step);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_ForIn){extract_candidates(expr.object);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}}else if(expr instanceof AST_If){extract_candidates(expr.condition);if(!(expr.body instanceof AST_Block)){extract_candidates(expr.body)}if(expr.alternative&&!(expr.alternative instanceof AST_Block)){extract_candidates(expr.alternative)}}else if(expr instanceof AST_Sequence){expr.expressions.forEach(extract_candidates)}else if(expr instanceof AST_SimpleStatement){extract_candidates(expr.body)}else if(expr instanceof AST_Switch){extract_candidates(expr.expression);expr.body.forEach(extract_candidates)}else if(expr instanceof AST_Unary){if(expr.operator=="++"||expr.operator=="--"){candidates.push(hit_stack.slice())}else{extract_candidates(expr.expression)}}else if(expr instanceof AST_VarDef){if(expr.value){candidates.push(hit_stack.slice());extract_candidates(expr.value)}}hit_stack.pop()}function find_stop(node,level,write_only){var parent=scanner.parent(level);if(parent instanceof AST_Assign){if(write_only&&!(parent.left instanceof AST_PropAccess||parent.left.name in lvalues)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Binary){if(write_only&&(!lazy_op(parent.operator)||parent.left===node)){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Call)return node;if(parent instanceof AST_Case)return node;if(parent instanceof AST_Conditional){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_Definitions){return find_stop(parent,level+1,true)}if(parent instanceof AST_Exit){return write_only?find_stop(parent,level+1,write_only):node}if(parent instanceof AST_If){if(write_only&&parent.condition===node){return find_stop(parent,level+1,write_only)}return node}if(parent instanceof AST_IterationStatement)return node;if(parent instanceof AST_Sequence){return find_stop(parent,level+1,parent.tail_node()!==node)}if(parent instanceof AST_SimpleStatement){return find_stop(parent,level+1,true)}if(parent instanceof AST_Switch)return node;if(parent instanceof AST_Unary)return node;if(parent instanceof AST_VarDef)return node;return null}function mangleable_var(var_def){var value=var_def.value;if(!(value instanceof AST_SymbolRef))return;if(value.name=="arguments")return;var def=value.definition();if(def.undeclared)return;return value_def=def}function get_lhs(expr){if(expr instanceof AST_VarDef){var def=expr.name.definition();if(!member(expr.name,def.orig))return;var declared=def.orig.length-def.eliminated;var referenced=def.references.length-def.replaced;if(declared>1&&!(expr.name instanceof AST_SymbolFunarg)||(referenced>1?mangleable_var(expr):!compressor.exposed(def))){return make_node(AST_SymbolRef,expr.name,expr.name)}}else{return expr[expr instanceof AST_Assign?"left":"expression"]}}function get_rhs(expr){if(!(candidate instanceof AST_Assign&&candidate.operator=="="))return;return candidate.right}function get_rvalue(expr){return expr[expr instanceof AST_Assign?"right":"value"]}function foldable(expr){if(expr.is_constant())return true;if(expr instanceof AST_Array)return false;if(expr instanceof AST_Function)return false;if(expr instanceof AST_Object)return false;if(expr instanceof AST_RegExp)return false;if(expr instanceof AST_Symbol)return true;if(!(lhs instanceof AST_SymbolRef))return false;if(expr.has_side_effects(compressor))return false;var circular;var def=lhs.definition();expr.walk(new TreeWalker(function(node){if(circular)return true;if(node instanceof AST_SymbolRef&&node.definition()===def){circular=true}}));return!circular}function get_lvalues(expr){var lvalues=Object.create(null);if(candidate instanceof AST_VarDef){lvalues[candidate.name.name]=lhs}var tw=new TreeWalker(function(node){var sym=root_expr(node);if(sym instanceof AST_SymbolRef||sym instanceof AST_This){lvalues[sym.name]=lvalues[sym.name]||is_lhs(node,tw.parent())}});expr.walk(tw);return lvalues}function remove_candidate(expr){if(expr.name instanceof AST_SymbolFunarg){var index=compressor.self().argnames.indexOf(expr.name);var args=compressor.parent().args;if(args[index])args[index]=make_node(AST_Number,args[index],{value:0});return true}var found=false;return statements[stat_index].transform(new TreeTransformer(function(node,descend,in_list){if(found)return node;if(node===expr||node.body===expr){found=true;if(node instanceof AST_VarDef){node.value=null;return node}return in_list?MAP.skip:null}},function(node){if(node instanceof AST_Sequence)switch(node.expressions.length){case 0:return null;case 1:return node.expressions[0]}}))}function is_lhs_local(lhs){var sym=root_expr(lhs);return sym instanceof AST_SymbolRef&&sym.definition().scope===scope&&!(in_loop&&(sym.name in lvalues&&lvalues[sym.name]!==lhs||candidate instanceof AST_Unary||candidate instanceof AST_Assign&&candidate.operator!="="))}function value_has_side_effects(expr){if(expr instanceof AST_Unary)return false;return get_rvalue(expr).has_side_effects(compressor)}function replace_all_symbols(){if(side_effects)return false;if(value_def)return true;if(lhs instanceof AST_SymbolRef){var def=lhs.definition();if(def.references.length-def.replaced==(candidate instanceof AST_VarDef?1:2)){return true}}return false}function symbol_in_lvalues(sym){var lvalue=lvalues[sym.name];if(!lvalue)return;if(lvalue!==lhs)return true;scan_rhs=false}function may_modify(sym){var def=sym.definition();if(def.orig.length==1&&def.orig[0]instanceof AST_SymbolDefun)return false;if(def.scope!==scope)return true;return!all(def.references,function(ref){var s=ref.scope;if(s.TYPE=="Scope")s=s.parent_scope;return s===scope})}function side_effects_external(node,lhs){if(node instanceof AST_Assign)return side_effects_external(node.left,true);if(node instanceof AST_Unary)return side_effects_external(node.expression,true);if(node instanceof AST_VarDef)return node.value&&side_effects_external(node.value);if(lhs){if(node instanceof AST_Dot)return side_effects_external(node.expression,true);if(node instanceof AST_Sub)return side_effects_external(node.expression,true);if(node instanceof AST_SymbolRef)return node.definition().scope!==scope}return false}}function eliminate_spurious_blocks(statements){var seen_dirs=[];for(var i=0;i<statements.length;){var stat=statements[i];if(stat instanceof AST_BlockStatement){CHANGED=true;eliminate_spurious_blocks(stat.body);[].splice.apply(statements,[i,1].concat(stat.body));i+=stat.body.length}else if(stat instanceof AST_EmptyStatement){CHANGED=true;statements.splice(i,1)}else if(stat instanceof AST_Directive){if(seen_dirs.indexOf(stat.value)<0){i++;seen_dirs.push(stat.value)}else{CHANGED=true;statements.splice(i,1)}}else i++}}function handle_if_return(statements,compressor){var self=compressor.self();var multiple_if_returns=has_multiple_if_returns(statements);var in_lambda=self instanceof AST_Lambda;for(var i=statements.length;--i>=0;){var stat=statements[i];var j=next_index(i);var next=statements[j];if(in_lambda&&!next&&stat instanceof AST_Return){if(!stat.value){CHANGED=true;statements.splice(i,1);continue}if(stat.value instanceof AST_UnaryPrefix&&stat.value.operator=="void"){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat,{body:stat.value.expression});continue}}if(stat instanceof AST_If){var ab=aborts(stat.body);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.condition=stat.condition.negate(compressor);var body=as_statement_array_with_return(stat.body,ab);stat.body=make_node(AST_BlockStatement,stat,{body:as_statement_array(stat.alternative).concat(extract_functions())});stat.alternative=make_node(AST_BlockStatement,stat,{body:body});statements[i]=stat.transform(compressor);continue}var ab=aborts(stat.alternative);if(can_merge_flow(ab)){if(ab.label){remove(ab.label.thedef.references,ab)}CHANGED=true;stat=stat.clone();stat.body=make_node(AST_BlockStatement,stat.body,{body:as_statement_array(stat.body).concat(extract_functions())});var body=as_statement_array_with_return(stat.alternative,ab);stat.alternative=make_node(AST_BlockStatement,stat.alternative,{body:body});statements[i]=stat.transform(compressor);continue}}if(stat instanceof AST_If&&stat.body instanceof AST_Return){var value=stat.body.value;if(!value&&!stat.alternative&&(in_lambda&&!next||next instanceof AST_Return&&!next.value)){CHANGED=true;statements[i]=make_node(AST_SimpleStatement,stat.condition,{body:stat.condition});continue}if(value&&!stat.alternative&&next instanceof AST_Return&&next.value){CHANGED=true;stat=stat.clone();stat.alternative=next;statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}if(value&&!stat.alternative&&(!next&&in_lambda&&multiple_if_returns||next instanceof AST_Return)){CHANGED=true;stat=stat.clone();stat.alternative=next||make_node(AST_Return,stat,{value:null});statements.splice(i,1,stat.transform(compressor));if(next)statements.splice(j,1);continue}var prev=statements[prev_index(i)];if(compressor.option("sequences")&&in_lambda&&!stat.alternative&&prev instanceof AST_If&&prev.body instanceof AST_Return&&next_index(j)==statements.length&&next instanceof AST_SimpleStatement){CHANGED=true;stat=stat.clone();stat.alternative=make_node(AST_BlockStatement,next,{body:[next,make_node(AST_Return,next,{value:null})]});statements.splice(i,1,stat.transform(compressor));statements.splice(j,1);continue}}}function has_multiple_if_returns(statements){var n=0;for(var i=statements.length;--i>=0;){var stat=statements[i];if(stat instanceof AST_If&&stat.body instanceof AST_Return){if(++n>1)return true}}return false}function is_return_void(value){return!value||value instanceof AST_UnaryPrefix&&value.operator=="void"}function can_merge_flow(ab){if(!ab)return false;var lct=ab instanceof AST_LoopControl?compressor.loopcontrol_target(ab):null;return ab instanceof AST_Return&&in_lambda&&is_return_void(ab.value)||ab instanceof AST_Continue&&self===loop_body(lct)||ab instanceof AST_Break&&lct instanceof AST_BlockStatement&&self===lct}function extract_functions(){var tail=statements.slice(i+1);statements.length=i+1;return tail.filter(function(stat){if(stat instanceof AST_Defun){statements.push(stat);return false}return true})}function as_statement_array_with_return(node,ab){var body=as_statement_array(node).slice(0,-1);if(ab.value){body.push(make_node(AST_SimpleStatement,ab.value,{body:ab.value.expression}))}return body}function next_index(i){for(var j=i+1,len=statements.length;j<len;j++){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}function prev_index(i){for(var j=i;--j>=0;){var stat=statements[j];if(!(stat instanceof AST_Var&&declarations_only(stat))){break}}return j}}function eliminate_dead_code(statements,compressor){var has_quit;var self=compressor.self();for(var i=0,n=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_LoopControl){var lct=compressor.loopcontrol_target(stat);if(stat instanceof AST_Break&&!(lct instanceof AST_IterationStatement)&&loop_body(lct)===self||stat instanceof AST_Continue&&loop_body(lct)===self){if(stat.label){remove(stat.label.thedef.references,stat)}}else{statements[n++]=stat}}else{statements[n++]=stat}if(aborts(stat)){has_quit=statements.slice(i+1);break}}statements.length=n;CHANGED=n!=len;if(has_quit)has_quit.forEach(function(stat){extract_declarations_from_unreachable_code(compressor,stat,statements)})}function declarations_only(node){return all(node.definitions,function(var_def){return!var_def.value})}function sequencesize(statements,compressor){if(statements.length<2)return;var seq=[],n=0;function push_seq(){if(!seq.length)return;var body=make_sequence(seq[0],seq);statements[n++]=make_node(AST_SimpleStatement,body,{body:body});seq=[]}for(var i=0,len=statements.length;i<len;i++){var stat=statements[i];if(stat instanceof AST_SimpleStatement){if(seq.length>=compressor.sequences_limit)push_seq();var body=stat.body;if(seq.length>0)body=body.drop_side_effect_free(compressor);if(body)merge_sequence(seq,body)}else if(stat instanceof AST_Definitions&&declarations_only(stat)||stat instanceof AST_Defun){statements[n++]=stat}else{push_seq();statements[n++]=stat}}push_seq();statements.length=n;if(n!=len)CHANGED=true}function to_simple_statement(block,decls){if(!(block instanceof AST_BlockStatement))return block;var stat=null;for(var i=0,len=block.body.length;i<len;i++){var line=block.body[i];if(line instanceof AST_Var&&declarations_only(line)){decls.push(line)}else if(stat){return false}else{stat=line}}return stat}function sequencesize_2(statements,compressor){function cons_seq(right){n--;CHANGED=true;var left=prev.body;return make_sequence(left,[left,right]).transform(compressor)}var n=0,prev;for(var i=0;i<statements.length;i++){var stat=statements[i];if(prev){if(stat instanceof AST_Exit){stat.value=cons_seq(stat.value||make_node(AST_Undefined,stat).transform(compressor))}else if(stat instanceof AST_For){if(!(stat.init instanceof AST_Definitions)){var abort=false;prev.body.walk(new TreeWalker(function(node){if(abort||node instanceof AST_Scope)return true;if(node instanceof AST_Binary&&node.operator=="in"){abort=true;return true}}));if(!abort){if(stat.init)stat.init=cons_seq(stat.init);else{stat.init=prev.body;n--;CHANGED=true}}}}else if(stat instanceof AST_ForIn){stat.object=cons_seq(stat.object)}else if(stat instanceof AST_If){stat.condition=cons_seq(stat.condition)}else if(stat instanceof AST_Switch){stat.expression=cons_seq(stat.expression)}else if(stat instanceof AST_With){stat.expression=cons_seq(stat.expression)}}if(compressor.option("conditionals")&&stat instanceof AST_If){var decls=[];var body=to_simple_statement(stat.body,decls);var alt=to_simple_statement(stat.alternative,decls);if(body!==false&&alt!==false&&decls.length>0){var len=decls.length;decls.push(make_node(AST_If,stat,{condition:stat.condition,body:body||make_node(AST_EmptyStatement,stat.body),alternative:alt}));decls.unshift(n,1);[].splice.apply(statements,decls);i+=len;n+=len+1;prev=null;CHANGED=true;continue}}statements[n++]=stat;prev=stat instanceof AST_SimpleStatement?stat:null}statements.length=n}function join_object_assignments(defn,body){if(!(defn instanceof AST_Definitions))return;var def=defn.definitions[defn.definitions.length-1];if(!(def.value instanceof AST_Object))return;var exprs;if(body instanceof AST_Assign){exprs=[body]}else if(body instanceof AST_Sequence){exprs=body.expressions.slice()}if(!exprs)return;var trimmed=false;do{var node=exprs[0];if(!(node instanceof AST_Assign))break;if(node.operator!="=")break;if(!(node.left instanceof AST_PropAccess))break;var sym=node.left.expression;if(!(sym instanceof AST_SymbolRef))break;if(def.name.name!=sym.name)break;if(!node.right.is_constant_expression(scope))break;var prop=node.left.property;if(prop instanceof AST_Node){prop=prop.evaluate(compressor)}if(prop instanceof AST_Node)break;prop=""+prop;var diff=compressor.has_directive("use strict")?function(node){return node.key!=prop&&node.key.name!=prop}:function(node){return node.key.name!=prop};if(!all(def.value.properties,diff))break;def.value.properties.push(make_node(AST_ObjectKeyVal,node,{key:prop,value:node.right}));exprs.shift();trimmed=true}while(exprs.length);return trimmed&&exprs}function join_consecutive_vars(statements){var defs;for(var i=0,j=-1,len=statements.length;i<len;i++){var stat=statements[i];var prev=statements[j];if(stat instanceof AST_Definitions){if(prev&&prev.TYPE==stat.TYPE){prev.definitions=prev.definitions.concat(stat.definitions);CHANGED=true}else if(defs&&defs.TYPE==stat.TYPE&&declarations_only(stat)){defs.definitions=defs.definitions.concat(stat.definitions);CHANGED=true}else{statements[++j]=stat;defs=stat}}else if(stat instanceof AST_Exit){stat.value=extract_object_assignments(stat.value)}else if(stat instanceof AST_For){var exprs=join_object_assignments(prev,stat.init);if(exprs){CHANGED=true;stat.init=exprs.length?make_sequence(stat.init,exprs):null;statements[++j]=stat}else if(prev instanceof AST_Var&&(!stat.init||stat.init.TYPE==prev.TYPE)){if(stat.init){prev.definitions=prev.definitions.concat(stat.init.definitions)}stat.init=prev;statements[j]=stat;CHANGED=true}else if(defs&&stat.init&&defs.TYPE==stat.init.TYPE&&declarations_only(stat.init)){defs.definitions=defs.definitions.concat(stat.init.definitions);stat.init=null;statements[++j]=stat;CHANGED=true}else{statements[++j]=stat}}else if(stat instanceof AST_ForIn){stat.object=extract_object_assignments(stat.object)}else if(stat instanceof AST_If){stat.condition=extract_object_assignments(stat.condition)}else if(stat instanceof AST_SimpleStatement){var exprs=join_object_assignments(prev,stat.body);if(exprs){CHANGED=true;if(!exprs.length)continue;stat.body=make_sequence(stat.body,exprs)}statements[++j]=stat}else if(stat instanceof AST_Switch){stat.expression=extract_object_assignments(stat.expression)}else if(stat instanceof AST_With){stat.expression=extract_object_assignments(stat.expression)}else{statements[++j]=stat}}statements.length=j+1;function extract_object_assignments(value){statements[++j]=stat;var exprs=join_object_assignments(prev,value);if(exprs){CHANGED=true;if(exprs.length){return make_sequence(value,exprs)}else if(value instanceof AST_Sequence){return value.tail_node().left}else{return value.left}}return value}}}function extract_declarations_from_unreachable_code(compressor,stat,target){if(!(stat instanceof AST_Defun)){compressor.warn("Dropping unreachable code [{file}:{line},{col}]",stat.start)}stat.walk(new TreeWalker(function(node){if(node instanceof AST_Definitions){compressor.warn("Declarations in unreachable code! [{file}:{line},{col}]",node.start);node.remove_initializers();target.push(node);return true}if(node instanceof AST_Defun){target.push(node);return true}if(node instanceof AST_Scope){return true}}))}function get_value(key){if(key instanceof AST_Constant){return key.getValue()}if(key instanceof AST_UnaryPrefix&&key.operator=="void"&&key.expression instanceof AST_Constant){return}return key}function is_undefined(node,compressor){return node.is_undefined||node instanceof AST_Undefined||node instanceof AST_UnaryPrefix&&node.operator=="void"&&!node.expression.has_side_effects(compressor)}(function(def){AST_Node.DEFMETHOD("may_throw_on_access",function(compressor){return!compressor.option("pure_getters")||this._dot_throw(compressor)});function is_strict(compressor){return/strict/.test(compressor.option("pure_getters"))}def(AST_Node,is_strict);def(AST_Null,return_true);def(AST_Undefined,return_true);def(AST_Constant,return_false);def(AST_Array,return_false);def(AST_Object,function(compressor){if(!is_strict(compressor))return false;for(var i=this.properties.length;--i>=0;)if(this.properties[i].value instanceof AST_Accessor)return true;return false});def(AST_Lambda,return_false);def(AST_UnaryPostfix,return_false);def(AST_UnaryPrefix,function(){return this.operator=="void"});def(AST_Binary,function(compressor){return(this.operator=="&&"||this.operator=="||")&&(this.left._dot_throw(compressor)||this.right._dot_throw(compressor))});def(AST_Assign,function(compressor){return this.operator=="="&&this.right._dot_throw(compressor)});def(AST_Conditional,function(compressor){return this.consequent._dot_throw(compressor)||this.alternative._dot_throw(compressor)});def(AST_Dot,function(compressor){if(!is_strict(compressor))return false;var exp=this.expression;if(exp instanceof AST_SymbolRef)exp=exp.fixed_value();return!(exp instanceof AST_Lambda&&this.property=="prototype")});def(AST_Sequence,function(compressor){return this.tail_node()._dot_throw(compressor)});def(AST_SymbolRef,function(compressor){if(this.is_undefined)return true;if(!is_strict(compressor))return false;if(is_undeclared_ref(this)&&this.is_declared(compressor))return false;if(this.is_immutable())return false;var fixed=this.fixed_value();return!fixed||fixed._dot_throw(compressor)})})(function(node,func){node.DEFMETHOD("_dot_throw",func)});(function(def){var unary_bool=["!","delete"];var binary_bool=["in","instanceof","==","!=","===","!==","<","<=",">=",">"];def(AST_Node,return_false);def(AST_UnaryPrefix,function(){return member(this.operator,unary_bool)});def(AST_Binary,function(){return member(this.operator,binary_bool)||lazy_op(this.operator)&&this.left.is_boolean()&&this.right.is_boolean()});def(AST_Conditional,function(){return this.consequent.is_boolean()&&this.alternative.is_boolean()});def(AST_Assign,function(){return this.operator=="="&&this.right.is_boolean()});def(AST_Sequence,function(){return this.tail_node().is_boolean()});def(AST_True,return_true);def(AST_False,return_true)})(function(node,func){node.DEFMETHOD("is_boolean",func)});(function(def){def(AST_Node,return_false);def(AST_Number,return_true);var unary=makePredicate("+ - ~ ++ --");def(AST_Unary,function(){return unary(this.operator)});var binary=makePredicate("- * / % & | ^ << >> >>>");def(AST_Binary,function(compressor){return binary(this.operator)||this.operator=="+"&&this.left.is_number(compressor)&&this.right.is_number(compressor)});def(AST_Assign,function(compressor){return binary(this.operator.slice(0,-1))||this.operator=="="&&this.right.is_number(compressor)});def(AST_Sequence,function(compressor){return this.tail_node().is_number(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_number(compressor)&&this.alternative.is_number(compressor)})})(function(node,func){node.DEFMETHOD("is_number",func)});(function(def){def(AST_Node,return_false);def(AST_String,return_true);def(AST_UnaryPrefix,function(){return this.operator=="typeof"});def(AST_Binary,function(compressor){return this.operator=="+"&&(this.left.is_string(compressor)||this.right.is_string(compressor))});def(AST_Assign,function(compressor){return(this.operator=="="||this.operator=="+=")&&this.right.is_string(compressor)});def(AST_Sequence,function(compressor){return this.tail_node().is_string(compressor)});def(AST_Conditional,function(compressor){return this.consequent.is_string(compressor)&&this.alternative.is_string(compressor)})})(function(node,func){node.DEFMETHOD("is_string",func)});var lazy_op=makePredicate("&& ||");var unary_side_effects=makePredicate("delete ++ --");function is_lhs(node,parent){if(parent instanceof AST_Unary&&unary_side_effects(parent.operator))return parent.expression;if(parent instanceof AST_Assign&&parent.left===node)return node}(function(def){AST_Node.DEFMETHOD("resolve_defines",function(compressor){if(!compressor.option("global_defs"))return;var def=this._find_defs(compressor,"");if(def){var node,parent=this,level=0;do{node=parent;parent=compressor.parent(level++)}while(parent instanceof AST_PropAccess&&parent.expression===node);if(is_lhs(node,parent)){compressor.warn("global_defs "+this.print_to_string()+" redefined [{file}:{line},{col}]",this.start)}else{return def}}});function to_node(value,orig){if(value instanceof AST_Node)return make_node(value.CTOR,orig,value);if(Array.isArray(value))return make_node(AST_Array,orig,{elements:value.map(function(value){return to_node(value,orig)})});if(value&&typeof value=="object"){var props=[];for(var key in value)if(HOP(value,key)){props.push(make_node(AST_ObjectKeyVal,orig,{key:key,value:to_node(value[key],orig)}))}return make_node(AST_Object,orig,{properties:props})}return make_node_from_constant(value,orig)}def(AST_Node,noop);def(AST_Dot,function(compressor,suffix){return this.expression._find_defs(compressor,"."+this.property+suffix)});def(AST_SymbolRef,function(compressor,suffix){if(!this.global())return;var name;var defines=compressor.option("global_defs");if(defines&&HOP(defines,name=this.name+suffix)){var node=to_node(defines[name],this);var top=compressor.find_parent(AST_Toplevel);node.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef){node.scope=top;node.thedef=top.def_global(node)}}));return node}})})(function(node,func){node.DEFMETHOD("_find_defs",func)});function best_of_expression(ast1,ast2){return ast1.print_to_string().length>ast2.print_to_string().length?ast2:ast1}function best_of_statement(ast1,ast2){return best_of_expression(make_node(AST_SimpleStatement,ast1,{body:ast1}),make_node(AST_SimpleStatement,ast2,{body:ast2})).body}function best_of(compressor,ast1,ast2){return(first_in_statement(compressor)?best_of_statement:best_of_expression)(ast1,ast2)}function convert_to_predicate(obj){for(var key in obj){obj[key]=makePredicate(obj[key])}}var object_fns=["constructor","toString","valueOf"];var native_fns={Array:["indexOf","join","lastIndexOf","slice"].concat(object_fns),Boolean:object_fns,Function:object_fns,Number:["toExponential","toFixed","toPrecision"].concat(object_fns),Object:object_fns,RegExp:["test"].concat(object_fns),String:["charAt","charCodeAt","concat","indexOf","italics","lastIndexOf","match","replace","search","slice","split","substr","substring","toLowerCase","toUpperCase","trim"].concat(object_fns)};convert_to_predicate(native_fns);var static_fns={Array:["isArray"],Math:["abs","acos","asin","atan","ceil","cos","exp","floor","log","round","sin","sqrt","tan","atan2","pow","max","min"],Number:["isFinite","isNaN"],Object:["create","getOwnPropertyDescriptor","getOwnPropertyNames","getPrototypeOf","isExtensible","isFrozen","isSealed","keys"],String:["fromCharCode"]};convert_to_predicate(static_fns);(function(def){AST_Node.DEFMETHOD("evaluate",function(compressor){if(!compressor.option("evaluate"))return this;var cached=[];var val=this._eval(compressor,cached,1);cached.forEach(function(node){delete node._eval});if(!val||val instanceof RegExp)return val;if(typeof val=="function"||typeof val=="object")return this;return val});var unaryPrefix=makePredicate("! ~ - + void");AST_Node.DEFMETHOD("is_constant",function(){if(this instanceof AST_Constant){return!(this instanceof AST_RegExp)}else{return this instanceof AST_UnaryPrefix&&this.expression instanceof AST_Constant&&unaryPrefix(this.operator)}});def(AST_Statement,function(){throw new Error(string_template("Cannot evaluate a statement [{file}:{line},{col}]",this.start))});def(AST_Lambda,return_this);def(AST_Node,return_this);def(AST_Constant,function(){return this.getValue()});def(AST_Function,function(compressor){if(compressor.option("unsafe")){var fn=function(){};fn.node=this;fn.toString=function(){return"function(){}"};return fn}return this});def(AST_Array,function(compressor,cached,depth){if(compressor.option("unsafe")){var elements=[];for(var i=0,len=this.elements.length;i<len;i++){var element=this.elements[i];var value=element._eval(compressor,cached,depth);if(element===value)return this;elements.push(value)}return elements}return this});def(AST_Object,function(compressor,cached,depth){if(compressor.option("unsafe")){var val={};for(var i=0,len=this.properties.length;i<len;i++){var prop=this.properties[i];var key=prop.key;if(key instanceof AST_Symbol){key=key.name}else if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===prop.key)return this}if(typeof Object.prototype[key]==="function"){return this}if(prop.value instanceof AST_Function)continue;val[key]=prop.value._eval(compressor,cached,depth);if(val[key]===prop.value)return this}return val}return this});var non_converting_unary=makePredicate("! typeof void");def(AST_UnaryPrefix,function(compressor,cached,depth){var e=this.expression;if(compressor.option("typeofs")&&this.operator=="typeof"&&(e instanceof AST_Lambda||e instanceof AST_SymbolRef&&e.fixed_value()instanceof AST_Lambda)){return typeof function(){}}if(!non_converting_unary(this.operator))depth++;e=e._eval(compressor,cached,depth);if(e===this.expression)return this;switch(this.operator){case"!":return!e;case"typeof":if(e instanceof RegExp)return this;return typeof e;case"void":return void e;case"~":return~e;case"-":return-e;case"+":return+e}return this});var non_converting_binary=makePredicate("&& || === !==");def(AST_Binary,function(compressor,cached,depth){if(!non_converting_binary(this.operator))depth++;var left=this.left._eval(compressor,cached,depth);if(left===this.left)return this;var right=this.right._eval(compressor,cached,depth);if(right===this.right)return this;var result;switch(this.operator){case"&&":result=left&&right;break;case"||":result=left||right;break;case"|":result=left|right;break;case"&":result=left&right;break;case"^":result=left^right;break;case"+":result=left+right;break;case"*":result=left*right;break;case"/":result=left/right;break;case"%":result=left%right;break;case"-":result=left-right;break;case"<<":result=left<<right;break;case">>":result=left>>right;break;case">>>":result=left>>>right;break;case"==":result=left==right;break;case"===":result=left===right;break;case"!=":result=left!=right;break;case"!==":result=left!==right;break;case"<":result=left<right;break;case"<=":result=left<=right;break;case">":result=left>right;break;case">=":result=left>=right;break;default:return this}if(isNaN(result)&&compressor.find_parent(AST_With)){return this}return result});def(AST_Conditional,function(compressor,cached,depth){var condition=this.condition._eval(compressor,cached,depth);if(condition===this.condition)return this;var node=condition?this.consequent:this.alternative;var value=node._eval(compressor,cached,depth);return value===node?this:value});def(AST_SymbolRef,function(compressor,cached,depth){var fixed=this.fixed_value();if(!fixed)return this;var value;if(cached.indexOf(fixed)>=0){value=fixed._eval()}else{this._eval=return_this;value=fixed._eval(compressor,cached,depth);delete this._eval;if(value===fixed)return this;fixed._eval=function(){return value};cached.push(fixed)}if(value&&typeof value=="object"){var escaped=this.definition().escaped;if(escaped&&depth>escaped)return this}return value});var global_objs={Array:Array,Math:Math,Number:Number,Object:Object,String:String};var static_values={Math:["E","LN10","LN2","LOG2E","LOG10E","PI","SQRT1_2","SQRT2"],Number:["MAX_VALUE","MIN_VALUE","NaN","NEGATIVE_INFINITY","POSITIVE_INFINITY"]};convert_to_predicate(static_values);def(AST_PropAccess,function(compressor,cached,depth){if(compressor.option("unsafe")){var key=this.property;if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===this.property)return this}var exp=this.expression;var val;if(is_undeclared_ref(exp)){if(!(static_values[exp.name]||return_false)(key))return this;val=global_objs[exp.name]}else{val=exp._eval(compressor,cached,depth+1);if(!val||val===exp||!HOP(val,key))return this;if(typeof val=="function")switch(key){case"name":return val.node.name?val.node.name.name:"";case"length":return val.node.argnames.length;default:return this}}return val[key]}return this});def(AST_Call,function(compressor,cached,depth){var exp=this.expression;if(compressor.option("unsafe")&&exp instanceof AST_PropAccess){var key=exp.property;if(key instanceof AST_Node){key=key._eval(compressor,cached,depth);if(key===exp.property)return this}var val;var e=exp.expression;if(is_undeclared_ref(e)){if(!(static_fns[e.name]||return_false)(key))return this;val=global_objs[e.name]}else{val=e._eval(compressor,cached,depth+1);if(val===e||!(val&&native_fns[val.constructor.name]||return_false)(key))return this}var args=[];for(var i=0,len=this.args.length;i<len;i++){var arg=this.args[i];var value=arg._eval(compressor,cached,depth);if(arg===value)return this;args.push(value)}try{return val[key].apply(val,args)}catch(ex){compressor.warn("Error evaluating {code} [{file}:{line},{col}]",{code:this.print_to_string(),file:this.start.file,line:this.start.line,col:this.start.col})}}return this});def(AST_New,return_this)})(function(node,func){node.DEFMETHOD("_eval",func)});(function(def){function basic_negation(exp){return make_node(AST_UnaryPrefix,exp,{operator:"!",expression:exp})}function best(orig,alt,first_in_statement){var negated=basic_negation(orig);if(first_in_statement){var stat=make_node(AST_SimpleStatement,alt,{body:alt});return best_of_expression(negated,stat)===stat?alt:negated}return best_of_expression(negated,alt)}def(AST_Node,function(){return basic_negation(this)});def(AST_Statement,function(){throw new Error("Cannot negate a statement")});def(AST_Function,function(){return basic_negation(this)});def(AST_UnaryPrefix,function(){if(this.operator=="!")return this.expression;return basic_negation(this)});def(AST_Sequence,function(compressor){var expressions=this.expressions.slice();expressions.push(expressions.pop().negate(compressor));return make_sequence(this,expressions)});def(AST_Conditional,function(compressor,first_in_statement){var self=this.clone();self.consequent=self.consequent.negate(compressor);self.alternative=self.alternative.negate(compressor);return best(this,self,first_in_statement)});def(AST_Binary,function(compressor,first_in_statement){var self=this.clone(),op=this.operator;if(compressor.option("unsafe_comps")){switch(op){case"<=":self.operator=">";return self;case"<":self.operator=">=";return self;case">=":self.operator="<";return self;case">":self.operator="<=";return self}}switch(op){case"==":self.operator="!=";return self;case"!=":self.operator="==";return self;case"===":self.operator="!==";return self;case"!==":self.operator="===";return self;case"&&":self.operator="||";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement);case"||":self.operator="&&";self.left=self.left.negate(compressor,first_in_statement);self.right=self.right.negate(compressor);return best(this,self,first_in_statement)}return basic_negation(this)})})(function(node,func){node.DEFMETHOD("negate",function(compressor,first_in_statement){return func.call(this,compressor,first_in_statement)})});var global_pure_fns=makePredicate("Boolean decodeURI decodeURIComponent Date encodeURI encodeURIComponent Error escape EvalError isFinite isNaN Number Object parseFloat parseInt RangeError ReferenceError String SyntaxError TypeError unescape URIError");AST_Call.DEFMETHOD("is_expr_pure",function(compressor){if(compressor.option("unsafe")){var expr=this.expression;if(is_undeclared_ref(expr)&&global_pure_fns(expr.name))return true;if(expr instanceof AST_Dot&&is_undeclared_ref(expr.expression)&&(static_fns[expr.expression.name]||return_false)(expr.property)){return true}}return this.pure||!compressor.pure_funcs(this)});AST_Node.DEFMETHOD("is_call_pure",return_false);AST_Dot.DEFMETHOD("is_call_pure",function(compressor){if(!compressor.option("unsafe"))return;var expr=this.expression;var fns=return_false;if(expr instanceof AST_Array){fns=native_fns.Array}else if(expr.is_boolean()){fns=native_fns.Boolean}else if(expr.is_number(compressor)){fns=native_fns.Number}else if(expr instanceof AST_RegExp){fns=native_fns.RegExp}else if(expr.is_string(compressor)){fns=native_fns.String}else if(!this.may_throw_on_access(compressor)){fns=native_fns.Object}return fns(this.property)});(function(def){def(AST_Node,return_true);def(AST_EmptyStatement,return_false);def(AST_Constant,return_false);def(AST_This,return_false);function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].has_side_effects(compressor))return true;return false}def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(!this.is_expr_pure(compressor)&&(!this.expression.is_call_pure(compressor)||this.expression.has_side_effects(compressor))){return true}return any(this.args,compressor)});def(AST_Switch,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_Case,function(compressor){return this.expression.has_side_effects(compressor)||any(this.body,compressor)});def(AST_Try,function(compressor){return any(this.body,compressor)||this.bcatch&&this.bcatch.has_side_effects(compressor)||this.bfinally&&this.bfinally.has_side_effects(compressor)});def(AST_If,function(compressor){return this.condition.has_side_effects(compressor)||this.body&&this.body.has_side_effects(compressor)||this.alternative&&this.alternative.has_side_effects(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_SimpleStatement,function(compressor){return this.body.has_side_effects(compressor)});def(AST_Lambda,return_false);def(AST_Binary,function(compressor){return this.left.has_side_effects(compressor)||this.right.has_side_effects(compressor)});def(AST_Assign,return_true);def(AST_Conditional,function(compressor){return this.condition.has_side_effects(compressor)||this.consequent.has_side_effects(compressor)||this.alternative.has_side_effects(compressor)});def(AST_Unary,function(compressor){return unary_side_effects(this.operator)||this.expression.has_side_effects(compressor)});def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_SymbolDeclaration,return_false);def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.has_side_effects(compressor)});def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.has_side_effects(compressor)||this.property.has_side_effects(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_VarDef,function(compressor){return this.value})})(function(node,func){node.DEFMETHOD("has_side_effects",func)});(function(def){def(AST_Node,return_true);def(AST_Constant,return_false);def(AST_EmptyStatement,return_false);def(AST_Lambda,return_false);def(AST_SymbolDeclaration,return_false);def(AST_This,return_false);function any(list,compressor){for(var i=list.length;--i>=0;)if(list[i].may_throw(compressor))return true;return false}def(AST_Array,function(compressor){return any(this.elements,compressor)});def(AST_Assign,function(compressor){if(this.right.may_throw(compressor))return true;if(!compressor.has_directive("use strict")&&this.operator=="="&&this.left instanceof AST_SymbolRef){return false}return this.left.may_throw(compressor)});def(AST_Binary,function(compressor){return this.left.may_throw(compressor)||this.right.may_throw(compressor)});def(AST_Block,function(compressor){return any(this.body,compressor)});def(AST_Call,function(compressor){if(any(this.args,compressor))return true;if(this.is_expr_pure(compressor))return false;if(this.expression.may_throw(compressor))return true;return!(this.expression instanceof AST_Lambda)||any(this.expression.body,compressor)});def(AST_Case,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_Conditional,function(compressor){return this.condition.may_throw(compressor)||this.consequent.may_throw(compressor)||this.alternative.may_throw(compressor)});def(AST_Definitions,function(compressor){return any(this.definitions,compressor)});def(AST_Dot,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)});def(AST_If,function(compressor){return this.condition.may_throw(compressor)||this.body&&this.body.may_throw(compressor)||this.alternative&&this.alternative.may_throw(compressor)});def(AST_LabeledStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Object,function(compressor){return any(this.properties,compressor)});def(AST_ObjectProperty,function(compressor){return this.value.may_throw(compressor)});def(AST_Return,function(compressor){return this.value&&this.value.may_throw(compressor)});def(AST_Sequence,function(compressor){return any(this.expressions,compressor)});def(AST_SimpleStatement,function(compressor){return this.body.may_throw(compressor)});def(AST_Sub,function(compressor){return this.expression.may_throw_on_access(compressor)||this.expression.may_throw(compressor)||this.property.may_throw(compressor)});def(AST_Switch,function(compressor){return this.expression.may_throw(compressor)||any(this.body,compressor)});def(AST_SymbolRef,function(compressor){return!this.is_declared(compressor)});def(AST_Try,function(compressor){return this.bcatch?this.bcatch.may_throw(compressor):any(this.body,compressor)||this.bfinally&&this.bfinally.may_throw(compressor)});def(AST_Unary,function(compressor){if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return false;return this.expression.may_throw(compressor)});def(AST_VarDef,function(compressor){if(!this.value)return false;return this.value.may_throw(compressor)})})(function(node,func){node.DEFMETHOD("may_throw",func)});(function(def){function all(list){for(var i=list.length;--i>=0;)if(!list[i].is_constant_expression())return false;return true}def(AST_Node,return_false);def(AST_Constant,return_true);def(AST_Lambda,function(scope){var self=this;var result=true;self.walk(new TreeWalker(function(node){if(!result)return true;if(node instanceof AST_SymbolRef){if(self.inlined){result=false;return true}var def=node.definition();if(member(def,self.enclosed)&&!self.variables.has(def.name)){if(scope){var scope_def=scope.find_variable(node);if(def.undeclared?!scope_def:scope_def===def){result="f";return true}}result=false}return true}}));return result});def(AST_Unary,function(){return this.expression.is_constant_expression()});def(AST_Binary,function(){return this.left.is_constant_expression()&&this.right.is_constant_expression()});def(AST_Array,function(){return all(this.elements)});def(AST_Object,function(){return all(this.properties)});def(AST_ObjectProperty,function(){return this.value.is_constant_expression()})})(function(node,func){node.DEFMETHOD("is_constant_expression",func)});function aborts(thing){return thing&&thing.aborts()}(function(def){def(AST_Statement,return_null);def(AST_Jump,return_this);function block_aborts(){var n=this.body.length;return n>0&&aborts(this.body[n-1])}def(AST_BlockStatement,block_aborts);def(AST_SwitchBranch,block_aborts);def(AST_If,function(){return this.alternative&&aborts(this.body)&&aborts(this.alternative)&&this})})(function(node,func){node.DEFMETHOD("aborts",func)});OPT(AST_Directive,function(self,compressor){if(compressor.has_directive(self.value)!==self){return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Debugger,function(self,compressor){if(compressor.option("drop_debugger"))return make_node(AST_EmptyStatement,self);return self});OPT(AST_LabeledStatement,function(self,compressor){if(self.body instanceof AST_Break&&compressor.loopcontrol_target(self.body)===self.body){return make_node(AST_EmptyStatement,self)}return self.label.references.length==0?self.body:self});OPT(AST_Block,function(self,compressor){tighten_body(self.body,compressor);return self});OPT(AST_BlockStatement,function(self,compressor){tighten_body(self.body,compressor);switch(self.body.length){case 1:return self.body[0];case 0:return make_node(AST_EmptyStatement,self)}return self});OPT(AST_Lambda,function(self,compressor){tighten_body(self.body,compressor);if(compressor.option("side_effects")&&self.body.length==1&&self.body[0]===compressor.has_directive("use strict")){self.body.length=0}return self});AST_Scope.DEFMETHOD("drop_unused",function(compressor){if(!compressor.option("unused"))return;if(compressor.has_directive("use asm"))return;var self=this;if(self.uses_eval||self.uses_with)return;var drop_funcs=!(self instanceof AST_Toplevel)||compressor.toplevel.funcs;var drop_vars=!(self instanceof AST_Toplevel)||compressor.toplevel.vars;var assign_as_unused=/keep_assign/.test(compressor.option("unused"))?return_false:function(node,props){var sym;if(node instanceof AST_Assign&&(node.write_only||node.operator=="=")){sym=node.left}else if(node instanceof AST_Unary&&node.write_only){sym=node.expression}if(/strict/.test(compressor.option("pure_getters"))){while(sym instanceof AST_PropAccess&&!sym.expression.may_throw_on_access(compressor)){if(sym instanceof AST_Sub)props.unshift(sym.property);sym=sym.expression}}return sym};var in_use=[];var in_use_ids=Object.create(null);var fixed_ids=Object.create(null);if(self instanceof AST_Toplevel&&compressor.top_retain){self.variables.each(function(def){if(compressor.top_retain(def)&&!(def.id in in_use_ids)){in_use_ids[def.id]=true;in_use.push(def)}})}var var_defs_by_id=new Dictionary;var initializations=new Dictionary;var scope=this;var tw=new TreeWalker(function(node,descend){if(node===self)return;if(node instanceof AST_Defun){var node_def=node.name.definition();if(!drop_funcs&&scope===self){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}initializations.add(node_def.id,node);return true}if(node instanceof AST_SymbolFunarg&&scope===self){var_defs_by_id.add(node.definition().id,node)}if(node instanceof AST_Definitions&&scope===self){node.definitions.forEach(function(def){var node_def=def.name.definition();if(def.name instanceof AST_SymbolVar){var_defs_by_id.add(node_def.id,def)}if(!drop_vars){if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}}if(def.value){initializations.add(node_def.id,def.value);if(def.value.has_side_effects(compressor)){def.value.walk(tw)}if(!node_def.chained&&def.name.fixed_value()===def.value){fixed_ids[node_def.id]=def}}});return true}return scan_ref_scoped(node,descend)});self.walk(tw);tw=new TreeWalker(scan_ref_scoped);for(var i=0;i<in_use.length;i++){var init=initializations.get(in_use[i].id);if(init)init.forEach(function(init){init.walk(tw)})}var tt=new TreeTransformer(function before(node,descend,in_list){var parent=tt.parent();if(drop_vars){var props=[],sym=assign_as_unused(node,props);if(sym instanceof AST_SymbolRef){var def=sym.definition();var in_use=def.id in in_use_ids;var value=null;if(node instanceof AST_Assign){if(!in_use||node.left===sym&&def.id in fixed_ids&&fixed_ids[def.id]!==node){value=node.right}}else if(!in_use){value=make_node(AST_Number,node,{value:0})}if(value){props.push(value);return maintain_this_binding(parent,node,make_sequence(node,props.map(function(prop){return prop.transform(tt)})))}}}if(scope!==self)return;if(node instanceof AST_Function&&node.name&&!compressor.option("keep_fnames")){var def=node.name.definition();if(!(def.id in in_use_ids)||def.orig.length>1)node.name=null}if(node instanceof AST_Lambda&&!(node instanceof AST_Accessor)){var trim=!compressor.option("keep_fargs");for(var a=node.argnames,i=a.length;--i>=0;){var sym=a[i];if(!(sym.definition().id in in_use_ids)){sym.__unused=true;if(trim){a.pop();compressor[sym.unreferenced()?"warn":"info"]("Dropping unused function argument {name} [{file}:{line},{col}]",template(sym))}}else{trim=false}}}if(drop_funcs&&node instanceof AST_Defun&&node!==self){var def=node.name.definition();if(!(def.id in in_use_ids)){compressor[node.name.unreferenced()?"warn":"info"]("Dropping unused function {name} [{file}:{line},{col}]",template(node.name));def.eliminated++;return make_node(AST_EmptyStatement,node)}}if(node instanceof AST_Definitions&&!(parent instanceof AST_ForIn&&parent.init===node)){var body=[],head=[],tail=[];var side_effects=[];node.definitions.forEach(function(def){if(def.value)def.value=def.value.transform(tt);var sym=def.name.definition();if(!drop_vars||sym.id in in_use_ids){if(def.value&&sym.id in fixed_ids&&fixed_ids[sym.id]!==def){def.value=def.value.drop_side_effect_free(compressor)}if(def.name instanceof AST_SymbolVar){var var_defs=var_defs_by_id.get(sym.id);if(var_defs.length>1&&(!def.value||sym.orig.indexOf(def.name)>sym.eliminated)){compressor.warn("Dropping duplicated definition of variable {name} [{file}:{line},{col}]",template(def.name));if(def.value){var ref=make_node(AST_SymbolRef,def.name,def.name);sym.references.push(ref);var assign=make_node(AST_Assign,def,{operator:"=",left:ref,right:def.value});if(fixed_ids[sym.id]===def){fixed_ids[sym.id]=assign}side_effects.push(assign.transform(tt))}remove(var_defs,def);sym.eliminated++;return}}if(def.value){if(side_effects.length>0){if(tail.length>0){side_effects.push(def.value);def.value=make_sequence(def.value,side_effects)}else{body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}side_effects=[]}tail.push(def)}else{head.push(def)}}else if(sym.orig[0]instanceof AST_SymbolCatch){var value=def.value&&def.value.drop_side_effect_free(compressor);if(value)side_effects.push(value);def.value=null;head.push(def)}else{var value=def.value&&def.value.drop_side_effect_free(compressor);if(value){compressor.warn("Side effects in initialization of unused variable {name} [{file}:{line},{col}]",template(def.name));side_effects.push(value)}else{compressor[def.name.unreferenced()?"warn":"info"]("Dropping unused variable {name} [{file}:{line},{col}]",template(def.name))}sym.eliminated++}});if(head.length>0||tail.length>0){node.definitions=head.concat(tail);body.push(node)}if(side_effects.length>0){body.push(make_node(AST_SimpleStatement,node,{body:make_sequence(node,side_effects)}))}switch(body.length){case 0:return in_list?MAP.skip:make_node(AST_EmptyStatement,node);case 1:return body[0];default:return in_list?MAP.splice(body):make_node(AST_BlockStatement,node,{body:body})}}if(node instanceof AST_For){descend(node,this);var block;if(node.init instanceof AST_BlockStatement){block=node.init;node.init=block.body.pop();block.body.push(node)}if(node.init instanceof AST_SimpleStatement){node.init=node.init.body}else if(is_empty(node.init)){node.init=null}return!block?node:in_list?MAP.splice(block.body):block}if(node instanceof AST_LabeledStatement&&node.body instanceof AST_For){descend(node,this);if(node.body instanceof AST_BlockStatement){var block=node.body;node.body=block.body.pop();block.body.push(node);return in_list?MAP.splice(block.body):block}return node}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend(node,this);scope=save_scope;return node}function template(sym){return{name:sym.name,file:sym.start.file,line:sym.start.line,col:sym.start.col}}});self.transform(tt);function scan_ref_scoped(node,descend){var node_def,props=[],sym=assign_as_unused(node,props);if(sym instanceof AST_SymbolRef&&self.variables.get(sym.name)===(node_def=sym.definition())){props.forEach(function(prop){prop.walk(tw)});if(node instanceof AST_Assign){node.right.walk(tw);if(node.left===sym&&!node_def.chained&&sym.fixed_value()===node.right){fixed_ids[node_def.id]=node}}return true}if(node instanceof AST_SymbolRef){node_def=node.definition();if(!(node_def.id in in_use_ids)){in_use_ids[node_def.id]=true;in_use.push(node_def)}return true}if(node instanceof AST_Scope){var save_scope=scope;scope=node;descend();scope=save_scope;return true}}});AST_Scope.DEFMETHOD("hoist_declarations",function(compressor){var self=this;if(compressor.has_directive("use asm"))return self;var hoist_funs=compressor.option("hoist_funs");var hoist_vars=compressor.option("hoist_vars");if(hoist_funs||hoist_vars){var dirs=[];var hoisted=[];var vars=new Dictionary,vars_found=0,var_decl=0;self.walk(new TreeWalker(function(node){if(node instanceof AST_Scope&&node!==self)return true;if(node instanceof AST_Var){++var_decl;return true}}));hoist_vars=hoist_vars&&var_decl>1;var tt=new TreeTransformer(function before(node){if(node!==self){if(node instanceof AST_Directive){dirs.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_funs&&node instanceof AST_Defun&&(tt.parent()===self||!compressor.has_directive("use strict"))){hoisted.push(node);return make_node(AST_EmptyStatement,node)}if(hoist_vars&&node instanceof AST_Var){node.definitions.forEach(function(def){vars.set(def.name.name,def);++vars_found});var seq=node.to_assignments(compressor);var p=tt.parent();if(p instanceof AST_ForIn&&p.init===node){if(seq==null){var def=node.definitions[0].name;return make_node(AST_SymbolRef,def,def)}return seq}if(p instanceof AST_For&&p.init===node){return seq}if(!seq)return make_node(AST_EmptyStatement,node);return make_node(AST_SimpleStatement,node,{body:seq})}if(node instanceof AST_Scope)return node}});self=self.transform(tt);if(vars_found>0){var defs=[];vars.each(function(def,name){if(self instanceof AST_Lambda&&find_if(function(x){return x.name==def.name.name},self.argnames)){vars.del(name)}else{def=def.clone();def.value=null;defs.push(def);vars.set(name,def)}});if(defs.length>0){for(var i=0;i<self.body.length;){if(self.body[i]instanceof AST_SimpleStatement){var expr=self.body[i].body,sym,assign;if(expr instanceof AST_Assign&&expr.operator=="="&&(sym=expr.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=expr.right;remove(defs,def);defs.push(def);self.body.splice(i,1);continue}if(expr instanceof AST_Sequence&&(assign=expr.expressions[0])instanceof AST_Assign&&assign.operator=="="&&(sym=assign.left)instanceof AST_Symbol&&vars.has(sym.name)){var def=vars.get(sym.name);if(def.value)break;def.value=assign.right;remove(defs,def);defs.push(def);self.body[i].body=make_sequence(expr,expr.expressions.slice(1));continue}}if(self.body[i]instanceof AST_EmptyStatement){self.body.splice(i,1);continue}if(self.body[i]instanceof AST_BlockStatement){var tmp=[i,1].concat(self.body[i].body);self.body.splice.apply(self.body,tmp);continue}break}defs=make_node(AST_Var,self,{definitions:defs});hoisted.push(defs)}}self.body=dirs.concat(hoisted,self.body)}return self});AST_Scope.DEFMETHOD("var_names",function(){var var_names=this._var_names;if(!var_names){this._var_names=var_names=Object.create(null);this.enclosed.forEach(function(def){var_names[def.name]=true});this.variables.each(function(def,name){var_names[name]=true})}return var_names});AST_Scope.DEFMETHOD("make_var_name",function(prefix){var var_names=this.var_names();prefix=prefix.replace(/(?:^[^a-z_$]|[^a-z0-9_$])/gi,"_");var name=prefix;for(var i=0;var_names[name];i++)name=prefix+"$"+i;var_names[name]=true;return name});AST_Scope.DEFMETHOD("hoist_properties",function(compressor){var self=this;if(!compressor.option("hoist_props")||compressor.has_directive("use asm"))return self;var top_retain=self instanceof AST_Toplevel&&compressor.top_retain||return_false;var defs_by_id=Object.create(null);return self.transform(new TreeTransformer(function(node,descend){if(node instanceof AST_VarDef){var sym=node.name,def,value;if(sym.scope===self&&(def=sym.definition()).escaped!=1&&!def.single_use&&!def.direct_access&&!top_retain(def)&&(value=sym.fixed_value())===node.value&&value instanceof AST_Object){descend(node,this);var defs=new Dictionary;var assignments=[];value.properties.forEach(function(prop){assignments.push(make_node(AST_VarDef,node,{name:make_sym(prop.key),value:prop.value}))});defs_by_id[def.id]=defs;return MAP.splice(assignments)}}if(node instanceof AST_PropAccess&&node.expression instanceof AST_SymbolRef){var defs=defs_by_id[node.expression.definition().id];if(defs){var def=defs.get(get_value(node.property));var sym=make_node(AST_SymbolRef,node,{name:def.name,scope:node.expression.scope,thedef:def});sym.reference({});return sym}}function make_sym(key){var new_var=make_node(sym.CTOR,sym,{name:self.make_var_name(sym.name+"_"+key),scope:self});var def=self.def_variable(new_var);defs.set(key,def);self.enclosed.push(def);return new_var}}))});(function(def){function trim(nodes,compressor,first_in_statement){var len=nodes.length;if(!len)return null;var ret=[],changed=false;for(var i=0;i<len;i++){var node=nodes[i].drop_side_effect_free(compressor,first_in_statement);changed|=node!==nodes[i];if(node){ret.push(node);first_in_statement=false}}return changed?ret.length?ret:null:nodes}def(AST_Node,return_this);def(AST_Constant,return_null);def(AST_This,return_null);def(AST_Call,function(compressor,first_in_statement){if(!this.is_expr_pure(compressor)){if(this.expression.is_call_pure(compressor)){var exprs=this.args.slice();exprs.unshift(this.expression.expression);exprs=trim(exprs,compressor,first_in_statement);return exprs&&make_sequence(this,exprs)}if(this.expression instanceof AST_Function&&(!this.expression.name||!this.expression.name.definition().references.length)){var node=this.clone();var exp=node.expression;exp.process_expression(false,compressor);exp.walk(new TreeWalker(function(node){if(node instanceof AST_Return&&node.value){node.value=node.value.drop_side_effect_free(compressor);return true}if(node instanceof AST_Scope&&node!==exp)return true}));return node}return this}if(this.pure){compressor.warn("Dropping __PURE__ call [{file}:{line},{col}]",this.start)}var args=trim(this.args,compressor,first_in_statement);return args&&make_sequence(this,args)});def(AST_Accessor,return_null);def(AST_Function,return_null);def(AST_Binary,function(compressor,first_in_statement){var right=this.right.drop_side_effect_free(compressor);if(!right)return this.left.drop_side_effect_free(compressor,first_in_statement);if(lazy_op(this.operator)){if(right===this.right)return this;var node=this.clone();node.right=right;return node}else{var left=this.left.drop_side_effect_free(compressor,first_in_statement);if(!left)return this.right.drop_side_effect_free(compressor,first_in_statement);return make_sequence(this,[left,right])}});def(AST_Assign,function(compressor){var left=this.left;if(left.has_side_effects(compressor)||compressor.has_directive("use strict")&&left instanceof AST_PropAccess&&left.expression.is_constant()){return this}this.write_only=true;if(root_expr(left).is_constant_expression(compressor.find_parent(AST_Scope))){return this.right.drop_side_effect_free(compressor)}return this});def(AST_Conditional,function(compressor){var consequent=this.consequent.drop_side_effect_free(compressor);var alternative=this.alternative.drop_side_effect_free(compressor);if(consequent===this.consequent&&alternative===this.alternative)return this;if(!consequent)return alternative?make_node(AST_Binary,this,{operator:"||",left:this.condition,right:alternative}):this.condition.drop_side_effect_free(compressor);if(!alternative)return make_node(AST_Binary,this,{operator:"&&",left:this.condition,right:consequent});var node=this.clone();node.consequent=consequent;node.alternative=alternative;return node});def(AST_Unary,function(compressor,first_in_statement){if(unary_side_effects(this.operator)){this.write_only=!this.expression.has_side_effects(compressor);return this}if(this.operator=="typeof"&&this.expression instanceof AST_SymbolRef)return null;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(first_in_statement&&expression&&is_iife_call(expression)){if(expression===this.expression&&this.operator=="!")return this;return expression.negate(compressor,first_in_statement)}return expression});def(AST_SymbolRef,function(compressor){return this.is_declared(compressor)?null:this});def(AST_Object,function(compressor,first_in_statement){var values=trim(this.properties,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_ObjectProperty,function(compressor,first_in_statement){return this.value.drop_side_effect_free(compressor,first_in_statement)});def(AST_Array,function(compressor,first_in_statement){var values=trim(this.elements,compressor,first_in_statement);return values&&make_sequence(this,values)});def(AST_Dot,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;return this.expression.drop_side_effect_free(compressor,first_in_statement)});def(AST_Sub,function(compressor,first_in_statement){if(this.expression.may_throw_on_access(compressor))return this;var expression=this.expression.drop_side_effect_free(compressor,first_in_statement);if(!expression)return this.property.drop_side_effect_free(compressor,first_in_statement);var property=this.property.drop_side_effect_free(compressor);if(!property)return expression;return make_sequence(this,[expression,property])});def(AST_Sequence,function(compressor){var last=this.tail_node();var expr=last.drop_side_effect_free(compressor);if(expr===last)return this;var expressions=this.expressions.slice(0,-1);if(expr)expressions.push(expr);return make_sequence(this,expressions)})})(function(node,func){node.DEFMETHOD("drop_side_effect_free",func)});OPT(AST_SimpleStatement,function(self,compressor){if(compressor.option("side_effects")){var body=self.body;var node=body.drop_side_effect_free(compressor,true);if(!node){compressor.warn("Dropping side-effect-free statement [{file}:{line},{col}]",self.start);return make_node(AST_EmptyStatement,self)}if(node!==body){return make_node(AST_SimpleStatement,self,{body:node})}}return self});OPT(AST_While,function(self,compressor){return compressor.option("loops")?make_node(AST_For,self,self).optimize(compressor):self});OPT(AST_Do,function(self,compressor){if(!compressor.option("loops"))return self;var cond=self.condition.tail_node().evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)return make_node(AST_For,self,{body:make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]})}).optimize(compressor);var has_loop_control=false;var tw=new TreeWalker(function(node){if(node instanceof AST_Scope||has_loop_control)return true;if(node instanceof AST_LoopControl&&tw.loopcontrol_target(node)===self)return has_loop_control=true});var parent=compressor.parent();(parent instanceof AST_LabeledStatement?parent:self).walk(tw);if(!has_loop_control)return make_node(AST_BlockStatement,self.body,{body:[self.body,make_node(AST_SimpleStatement,self.condition,{body:self.condition})]}).optimize(compressor)}if(self.body instanceof AST_SimpleStatement)return make_node(AST_For,self,{condition:make_sequence(self.condition,[self.body.body,self.condition]),body:make_node(AST_EmptyStatement,self)}).optimize(compressor);return self});function if_break_in_loop(self,compressor){var first=self.body instanceof AST_BlockStatement?self.body.body[0]:self.body;if(compressor.option("dead_code")&&is_break(first)){var body=[];if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}if(self.condition){body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}))}extract_declarations_from_unreachable_code(compressor,self.body,body);return make_node(AST_BlockStatement,self,{body:body})}if(first instanceof AST_If){if(is_break(first.body)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition.negate(compressor)})}else{self.condition=first.condition.negate(compressor)}drop_it(first.alternative)}else if(is_break(first.alternative)){if(self.condition){self.condition=make_node(AST_Binary,self.condition,{left:self.condition,operator:"&&",right:first.condition})}else{self.condition=first.condition}drop_it(first.body)}}return self;function is_break(node){return node instanceof AST_Break&&compressor.loopcontrol_target(node)===compressor.self()}function drop_it(rest){rest=as_statement_array(rest);if(self.body instanceof AST_BlockStatement){self.body=self.body.clone();self.body.body=rest.concat(self.body.body.slice(1));self.body=self.body.transform(compressor)}else{self.body=make_node(AST_BlockStatement,self.body,{body:rest}).transform(compressor)}self=if_break_in_loop(self,compressor)}}OPT(AST_For,function(self,compressor){if(!compressor.option("loops"))return self;if(compressor.option("side_effects")&&self.init){self.init=self.init.drop_side_effect_free(compressor)}if(self.condition){var cond=self.condition.evaluate(compressor);if(!(cond instanceof AST_Node)){if(cond)self.condition=null;else if(!compressor.option("dead_code")){var orig=self.condition;self.condition=make_node_from_constant(cond,self.condition);self.condition=best_of_expression(self.condition.transform(compressor),orig)}}if(compressor.option("dead_code")){if(cond instanceof AST_Node)cond=self.condition.tail_node().evaluate(compressor);if(!cond){var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);if(self.init instanceof AST_Statement){body.push(self.init)}else if(self.init){body.push(make_node(AST_SimpleStatement,self.init,{body:self.init}))}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}}return if_break_in_loop(self,compressor)});OPT(AST_If,function(self,compressor){if(is_empty(self.alternative))self.alternative=null;if(!compressor.option("conditionals"))return self;var cond=self.condition.evaluate(compressor);if(!compressor.option("dead_code")&&!(cond instanceof AST_Node)){var orig=self.condition;self.condition=make_node_from_constant(cond,orig);self.condition=best_of_expression(self.condition.transform(compressor),orig)}if(compressor.option("dead_code")){if(cond instanceof AST_Node)cond=self.condition.tail_node().evaluate(compressor);if(!cond){compressor.warn("Condition always false [{file}:{line},{col}]",self.condition.start);var body=[];extract_declarations_from_unreachable_code(compressor,self.body,body);body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));if(self.alternative)body.push(self.alternative);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}else if(!(cond instanceof AST_Node)){compressor.warn("Condition always true [{file}:{line},{col}]",self.condition.start);var body=[];if(self.alternative){extract_declarations_from_unreachable_code(compressor,self.alternative,body)}body.push(make_node(AST_SimpleStatement,self.condition,{body:self.condition}));body.push(self.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}}var negated=self.condition.negate(compressor);var self_condition_length=self.condition.print_to_string().length;var negated_length=negated.print_to_string().length;var negated_is_best=negated_length<self_condition_length;if(self.alternative&&negated_is_best){negated_is_best=false;self.condition=negated;var tmp=self.body;self.body=self.alternative||make_node(AST_EmptyStatement,self);self.alternative=tmp}if(is_empty(self.body)&&is_empty(self.alternative)){return make_node(AST_SimpleStatement,self.condition,{body:self.condition.clone()}).optimize(compressor)}if(self.body instanceof AST_SimpleStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.body,alternative:self.alternative.body})}).optimize(compressor)}if(is_empty(self.alternative)&&self.body instanceof AST_SimpleStatement){if(self_condition_length===negated_length&&!negated_is_best&&self.condition instanceof AST_Binary&&self.condition.operator=="||"){negated_is_best=true}if(negated_is_best)return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:negated,right:self.body.body})}).optimize(compressor);return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:self.body.body})}).optimize(compressor)}if(self.body instanceof AST_EmptyStatement&&self.alternative instanceof AST_SimpleStatement){return make_node(AST_SimpleStatement,self,{body:make_node(AST_Binary,self,{operator:"||",left:self.condition,right:self.alternative.body})}).optimize(compressor)}if(self.body instanceof AST_Exit&&self.alternative instanceof AST_Exit&&self.body.TYPE==self.alternative.TYPE){return make_node(self.body.CTOR,self,{value:make_node(AST_Conditional,self,{condition:self.condition,consequent:self.body.value||make_node(AST_Undefined,self.body),alternative:self.alternative.value||make_node(AST_Undefined,self.alternative)}).transform(compressor)}).optimize(compressor)}if(self.body instanceof AST_If&&!self.body.alternative&&!self.alternative){self=make_node(AST_If,self,{condition:make_node(AST_Binary,self.condition,{operator:"&&",left:self.condition,right:self.body.condition}),body:self.body.body,alternative:null})}if(aborts(self.body)){if(self.alternative){var alt=self.alternative;self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,alt]}).optimize(compressor)}}if(aborts(self.alternative)){var body=self.body;self.body=self.alternative;self.condition=negated_is_best?negated:self.condition.negate(compressor);self.alternative=null;return make_node(AST_BlockStatement,self,{body:[self,body]}).optimize(compressor)}return self});OPT(AST_Switch,function(self,compressor){if(!compressor.option("switches"))return self;var branch;var value=self.expression.evaluate(compressor);if(!(value instanceof AST_Node)){var orig=self.expression;self.expression=make_node_from_constant(value,orig);self.expression=best_of_expression(self.expression.transform(compressor),orig)}if(!compressor.option("dead_code"))return self;if(value instanceof AST_Node){value=self.expression.tail_node().evaluate(compressor)}var decl=[];var body=[];var default_branch;var exact_match;for(var i=0,len=self.body.length;i<len&&!exact_match;i++){branch=self.body[i];if(branch instanceof AST_Default){if(!default_branch){default_branch=branch}else{eliminate_branch(branch,body[body.length-1])}}else if(!(value instanceof AST_Node)){var exp=branch.expression.evaluate(compressor);if(!(exp instanceof AST_Node)&&exp!==value){eliminate_branch(branch,body[body.length-1]);continue}if(exp instanceof AST_Node)exp=branch.expression.tail_node().evaluate(compressor);if(exp===value){exact_match=branch;if(default_branch){var default_index=body.indexOf(default_branch);body.splice(default_index,1);eliminate_branch(default_branch,body[default_index-1]);default_branch=null}}}if(aborts(branch)){var prev=body[body.length-1];if(aborts(prev)&&prev.body.length==branch.body.length&&make_node(AST_BlockStatement,prev,prev).equivalent_to(make_node(AST_BlockStatement,branch,branch))){prev.body=[]}}body.push(branch)}while(i<len)eliminate_branch(self.body[i++],body[body.length-1]);if(body.length>0){body[0].body=decl.concat(body[0].body)}self.body=body;while(branch=body[body.length-1]){var stat=branch.body[branch.body.length-1];if(stat instanceof AST_Break&&compressor.loopcontrol_target(stat)===self)branch.body.pop();if(branch.body.length||branch instanceof AST_Case&&(default_branch||branch.expression.has_side_effects(compressor)))break;if(body.pop()===default_branch)default_branch=null}if(body.length==0){return make_node(AST_BlockStatement,self,{body:decl.concat(make_node(AST_SimpleStatement,self.expression,{body:self.expression}))}).optimize(compressor)}if(body.length==1&&(body[0]===exact_match||body[0]===default_branch)){var has_break=false;var tw=new TreeWalker(function(node){if(has_break||node instanceof AST_Lambda||node instanceof AST_SimpleStatement)return true;if(node instanceof AST_Break&&tw.loopcontrol_target(node)===self)has_break=true});self.walk(tw);if(!has_break){var statements=body[0].body.slice();var exp=body[0].expression;if(exp)statements.unshift(make_node(AST_SimpleStatement,exp,{body:exp}));statements.unshift(make_node(AST_SimpleStatement,self.expression,{body:self.expression}));return make_node(AST_BlockStatement,self,{body:statements}).optimize(compressor)}}return self;function eliminate_branch(branch,prev){if(prev&&!aborts(prev)){prev.body=prev.body.concat(branch.body)}else{extract_declarations_from_unreachable_code(compressor,branch,decl)}}});OPT(AST_Try,function(self,compressor){tighten_body(self.body,compressor);if(self.bcatch&&self.bfinally&&all(self.bfinally.body,is_empty))self.bfinally=null;if(compressor.option("dead_code")&&all(self.body,is_empty)){var body=[];if(self.bcatch){extract_declarations_from_unreachable_code(compressor,self.bcatch,body);body.forEach(function(stat){if(!(stat instanceof AST_Definitions))return;stat.definitions.forEach(function(var_def){var def=var_def.name.definition().redefined();if(!def)return;var_def.name=var_def.name.clone();var_def.name.thedef=def})})}if(self.bfinally)body=body.concat(self.bfinally.body);return make_node(AST_BlockStatement,self,{body:body}).optimize(compressor)}return self});AST_Definitions.DEFMETHOD("remove_initializers",function(){this.definitions.forEach(function(def){def.value=null})});AST_Definitions.DEFMETHOD("to_assignments",function(compressor){var reduce_vars=compressor.option("reduce_vars");var assignments=this.definitions.reduce(function(a,def){if(def.value){var name=make_node(AST_SymbolRef,def.name,def.name);a.push(make_node(AST_Assign,def,{operator:"=",left:name,right:def.value}));if(reduce_vars)name.definition().fixed=false}def=def.name.definition();def.eliminated++;def.replaced--;return a},[]);if(assignments.length==0)return null;return make_sequence(this,assignments)});OPT(AST_Definitions,function(self,compressor){if(self.definitions.length==0)return make_node(AST_EmptyStatement,self);return self});OPT(AST_Call,function(self,compressor){var exp=self.expression;var fn=exp;if(compressor.option("reduce_vars")&&fn instanceof AST_SymbolRef){fn=fn.fixed_value()}var is_func=fn instanceof AST_Lambda;if(compressor.option("unused")&&is_func&&!fn.uses_arguments&&!fn.uses_eval){var pos=0,last=0;for(var i=0,len=self.args.length;i<len;i++){var trim=i>=fn.argnames.length;if(trim||fn.argnames[i].__unused){var node=self.args[i].drop_side_effect_free(compressor);if(node){self.args[pos++]=node}else if(!trim){self.args[pos++]=make_node(AST_Number,self.args[i],{value:0});continue}}else{self.args[pos++]=self.args[i]}last=pos}self.args.length=last}if(compressor.option("unsafe")){if(is_undeclared_ref(exp))switch(exp.name){case"Array":if(self.args.length!=1){return make_node(AST_Array,self,{elements:self.args}).optimize(compressor)}break;case"Object":if(self.args.length==0){return make_node(AST_Object,self,{properties:[]})}break;case"String":if(self.args.length==0)return make_node(AST_String,self,{value:""});if(self.args.length<=1)return make_node(AST_Binary,self,{left:self.args[0],operator:"+",right:make_node(AST_String,self,{value:""})}).optimize(compressor);break;case"Number":if(self.args.length==0)return make_node(AST_Number,self,{value:0});if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"+"}).optimize(compressor);case"Boolean":if(self.args.length==0)return make_node(AST_False,self);if(self.args.length==1)return make_node(AST_UnaryPrefix,self,{expression:make_node(AST_UnaryPrefix,self,{expression:self.args[0],operator:"!"}),operator:"!"}).optimize(compressor);break;case"RegExp":var params=[];if(all(self.args,function(arg){var value=arg.evaluate(compressor);params.unshift(value);return arg!==value})){try{return best_of(compressor,self,make_node(AST_RegExp,self,{value:RegExp.apply(RegExp,params)}))}catch(ex){compressor.warn("Error converting {expr} [{file}:{line},{col}]",{expr:self.print_to_string(),file:self.start.file,line:self.start.line,col:self.start.col})}}break}else if(exp instanceof AST_Dot)switch(exp.property){case"toString":if(self.args.length==0&&!exp.expression.may_throw_on_access(compressor)){return make_node(AST_Binary,self,{left:make_node(AST_String,self,{value:""}),operator:"+",right:exp.expression}).optimize(compressor)}break;case"join":if(exp.expression instanceof AST_Array)EXIT:{var separator;if(self.args.length>0){separator=self.args[0].evaluate(compressor);if(separator===self.args[0])break EXIT}var elements=[];var consts=[];exp.expression.elements.forEach(function(el){var value=el.evaluate(compressor);if(value!==el){consts.push(value)}else{if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}));consts.length=0}elements.push(el)}});if(consts.length>0){elements.push(make_node(AST_String,self,{value:consts.join(separator)}))}if(elements.length==0)return make_node(AST_String,self,{value:""});if(elements.length==1){if(elements[0].is_string(compressor)){return elements[0]}return make_node(AST_Binary,elements[0],{operator:"+",left:make_node(AST_String,self,{value:""}),right:elements[0]})}if(separator==""){var first;if(elements[0].is_string(compressor)||elements[1].is_string(compressor)){first=elements.shift()}else{first=make_node(AST_String,self,{value:""})}return elements.reduce(function(prev,el){return make_node(AST_Binary,el,{operator:"+",left:prev,right:el})},first).optimize(compressor)}var node=self.clone();node.expression=node.expression.clone();node.expression.expression=node.expression.expression.clone();node.expression.expression.elements=elements;return best_of(compressor,self,node)}break;case"charAt":if(exp.expression.is_string(compressor)){var arg=self.args[0];var index=arg?arg.evaluate(compressor):0;if(index!==arg){return make_node(AST_Sub,exp,{expression:exp.expression,property:make_node_from_constant(index|0,arg||exp)}).optimize(compressor)}}break;case"apply":if(self.args.length==2&&self.args[1]instanceof AST_Array){var args=self.args[1].elements.slice();args.unshift(self.args[0]);return make_node(AST_Call,self,{expression:make_node(AST_Dot,exp,{expression:exp.expression,property:"call"}),args:args}).optimize(compressor)}break;case"call":var func=exp.expression;if(func instanceof AST_SymbolRef){func=func.fixed_value()}if(func instanceof AST_Lambda&&!func.contains_this()){return make_sequence(this,[self.args[0],make_node(AST_Call,self,{expression:exp.expression,args:self.args.slice(1)})]).optimize(compressor)}break}}if(compressor.option("unsafe_Function")&&is_undeclared_ref(exp)&&exp.name=="Function"){if(self.args.length==0)return make_node(AST_Function,self,{argnames:[],body:[]});if(all(self.args,function(x){return x instanceof AST_String})){try{var code="n(function("+self.args.slice(0,-1).map(function(arg){return arg.value}).join(",")+"){"+self.args[self.args.length-1].value+"})";var ast=parse(code);var mangle={ie8:compressor.option("ie8")};ast.figure_out_scope(mangle);var comp=new Compressor(compressor.options);ast=ast.transform(comp);ast.figure_out_scope(mangle);ast.compute_char_frequency(mangle);ast.mangle_names(mangle);var fun;ast.walk(new TreeWalker(function(node){if(fun)return true;if(node instanceof AST_Lambda){fun=node;return true}}));var code=OutputStream();AST_BlockStatement.prototype._codegen.call(fun,fun,code);self.args=[make_node(AST_String,self,{value:fun.argnames.map(function(arg){return arg.print_to_string()}).join(",")}),make_node(AST_String,self.args[self.args.length-1],{value:code.get().replace(/^\{|\}$/g,"")})];return self}catch(ex){if(ex instanceof JS_Parse_Error){compressor.warn("Error parsing code passed to new Function [{file}:{line},{col}]",self.args[self.args.length-1].start);compressor.warn(ex.toString())}else{throw ex}}}}var stat=is_func&&fn.body[0];if(compressor.option("inline")&&stat instanceof AST_Return){var value=stat.value;if(!value||value.is_constant_expression()){var args=self.args.concat(value||make_node(AST_Undefined,self));return make_sequence(self,args).optimize(compressor)}}if(is_func){var def,value,scope,in_loop,level=-1;if(compressor.option("inline")&&!fn.uses_arguments&&!fn.uses_eval&&!(fn.name&&fn instanceof AST_Function)&&(value=can_flatten_body(stat))&&(exp===fn||compressor.option("unused")&&(def=exp.definition()).references.length==1&&!recursive_ref(compressor,def)&&fn.is_constant_expression(exp.scope))&&!self.pure&&!fn.contains_this()&&can_inject_symbols()){fn._squeezed=true;return make_sequence(self,flatten_fn()).optimize(compressor)}if(compressor.option("side_effects")&&all(fn.body,is_empty)){var args=self.args.concat(make_node(AST_Undefined,self));return make_sequence(self,args).optimize(compressor)}}if(compressor.option("drop_console")){if(exp instanceof AST_PropAccess){var name=exp.expression;while(name.expression){name=name.expression}if(is_undeclared_ref(name)&&name.name=="console"){return make_node(AST_Undefined,self).optimize(compressor)}}}if(compressor.option("negate_iife")&&compressor.parent()instanceof AST_SimpleStatement&&is_iife_call(self)){return self.negate(compressor,true)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self;function return_value(stat){if(!stat)return make_node(AST_Undefined,self);if(stat instanceof AST_Return){if(!stat.value)return make_node(AST_Undefined,self);return stat.value.clone(true)}if(stat instanceof AST_SimpleStatement){return make_node(AST_UnaryPrefix,stat,{operator:"void",expression:stat.body.clone(true)})}}function can_flatten_body(stat){var len=fn.body.length;if(compressor.option("inline")<3){return len==1&&return_value(stat)}stat=null;for(var i=0;i<len;i++){var line=fn.body[i];if(line instanceof AST_Var){if(stat&&!all(line.definitions,function(var_def){return!var_def.value})){return false}}else if(line instanceof AST_EmptyStatement){continue}else if(stat){return false}else{stat=line}}return return_value(stat)}function can_inject_args(catches,safe_to_inject){for(var i=0,len=fn.argnames.length;i<len;i++){var arg=fn.argnames[i];if(arg.__unused)continue;if(!safe_to_inject||catches[arg.name]||identifier_atom(arg.name)||scope.var_names()[arg.name]){return false}if(in_loop)in_loop.push(arg.definition())}return true}function can_inject_vars(catches,safe_to_inject){var len=fn.body.length;for(var i=0;i<len;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;if(!safe_to_inject)return false;for(var j=stat.definitions.length;--j>=0;){var name=stat.definitions[j].name;if(catches[name.name]||identifier_atom(name.name)||scope.var_names()[name.name]){return false}if(in_loop)in_loop.push(name.definition())}}return true}function can_inject_symbols(){var catches=Object.create(null);do{scope=compressor.parent(++level);if(scope instanceof AST_Catch){catches[scope.argname.name]=true}else if(scope instanceof AST_IterationStatement){in_loop=[]}else if(scope instanceof AST_SymbolRef){if(scope.fixed_value()instanceof AST_Scope)return false}}while(!(scope instanceof AST_Scope));var safe_to_inject=!(scope instanceof AST_Toplevel)||compressor.toplevel.vars;var inline=compressor.option("inline");if(!can_inject_vars(catches,inline>=3&&safe_to_inject))return false;if(!can_inject_args(catches,inline>=2&&safe_to_inject))return false;return!in_loop||in_loop.length==0||!is_reachable(fn,in_loop)}function append_var(decls,expressions,name,value){var def=name.definition();scope.variables.set(name.name,def);scope.enclosed.push(def);if(!scope.var_names()[name.name]){scope.var_names()[name.name]=true;decls.push(make_node(AST_VarDef,name,{name:name,value:null}))}var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);if(value)expressions.push(make_node(AST_Assign,self,{operator:"=",left:sym,right:value}))}function flatten_args(decls,expressions){var len=fn.argnames.length;for(var i=self.args.length;--i>=len;){expressions.push(self.args[i])}for(i=len;--i>=0;){var name=fn.argnames[i];var value=self.args[i];if(name.__unused||scope.var_names()[name.name]){if(value)expressions.push(value)}else{var symbol=make_node(AST_SymbolVar,name,name);name.definition().orig.push(symbol);if(!value&&in_loop)value=make_node(AST_Undefined,self);append_var(decls,expressions,symbol,value)}}decls.reverse();expressions.reverse()}function flatten_vars(decls,expressions){var pos=expressions.length;for(var i=0,lines=fn.body.length;i<lines;i++){var stat=fn.body[i];if(!(stat instanceof AST_Var))continue;for(var j=0,defs=stat.definitions.length;j<defs;j++){var var_def=stat.definitions[j];var name=var_def.name;append_var(decls,expressions,name,var_def.value);if(in_loop){var def=name.definition();var sym=make_node(AST_SymbolRef,name,name);def.references.push(sym);expressions.splice(pos++,0,make_node(AST_Assign,var_def,{operator:"=",left:sym,right:make_node(AST_Undefined,name)}))}}}}function flatten_fn(){var decls=[];var expressions=[];flatten_args(decls,expressions);flatten_vars(decls,expressions);expressions.push(value);if(decls.length){i=scope.body.indexOf(compressor.parent(level-1))+1;scope.body.splice(i,0,make_node(AST_Var,fn,{definitions:decls}))}return expressions}});OPT(AST_New,function(self,compressor){if(compressor.option("unsafe")){var exp=self.expression;if(is_undeclared_ref(exp)){switch(exp.name){case"Object":case"RegExp":case"Function":case"Error":case"Array":return make_node(AST_Call,self,self).transform(compressor)}}}return self});OPT(AST_Sequence,function(self,compressor){if(!compressor.option("side_effects"))return self;var expressions=[];filter_for_side_effects();var end=expressions.length-1;trim_right_for_undefined();if(end==0){self=maintain_this_binding(compressor.parent(),compressor.self(),expressions[0]);if(!(self instanceof AST_Sequence))self=self.optimize(compressor);return self}self.expressions=expressions;return self;function filter_for_side_effects(){var first=first_in_statement(compressor);var last=self.expressions.length-1;self.expressions.forEach(function(expr,index){if(index<last)expr=expr.drop_side_effect_free(compressor,first);if(expr){merge_sequence(expressions,expr);first=false}})}function trim_right_for_undefined(){while(end>0&&is_undefined(expressions[end],compressor))end--;if(end<expressions.length-1){expressions[end]=make_node(AST_UnaryPrefix,self,{operator:"void",expression:expressions[end]});expressions.length=end+1}}});AST_Unary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.expression instanceof AST_Sequence){var x=this.expression.expressions.slice();var e=this.clone();e.expression=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}}return this});OPT(AST_UnaryPostfix,function(self,compressor){return self.lift_sequences(compressor)});OPT(AST_UnaryPrefix,function(self,compressor){var e=self.expression;if(self.operator=="delete"&&!(e instanceof AST_SymbolRef||e instanceof AST_PropAccess||is_identifier_atom(e))){if(e instanceof AST_Sequence){e=e.expressions.slice();e.push(make_node(AST_True,self));return make_sequence(self,e).optimize(compressor)}return make_sequence(self,[e,make_node(AST_True,self)]).optimize(compressor)}var seq=self.lift_sequences(compressor);if(seq!==self){return seq}if(compressor.option("side_effects")&&self.operator=="void"){e=e.drop_side_effect_free(compressor);if(e){self.expression=e;return self}else{return make_node(AST_Undefined,self).optimize(compressor)}}if(compressor.in_boolean_context()){switch(self.operator){case"!":if(e instanceof AST_UnaryPrefix&&e.operator=="!"){return e.expression}if(e instanceof AST_Binary){self=best_of(compressor,self,e.negate(compressor,first_in_statement(compressor)))}break;case"typeof":compressor.warn("Boolean expression always true [{file}:{line},{col}]",self.start);return(e instanceof AST_SymbolRef?make_node(AST_True,self):make_sequence(self,[e,make_node(AST_True,self)])).optimize(compressor)}}if(self.operator=="-"&&e instanceof AST_Infinity){e=e.transform(compressor)}if(e instanceof AST_Binary&&(self.operator=="+"||self.operator=="-")&&(e.operator=="*"||e.operator=="/"||e.operator=="%")){return make_node(AST_Binary,self,{operator:e.operator,left:make_node(AST_UnaryPrefix,e.left,{operator:self.operator,expression:e.left}),right:e.right})}if(self.operator!="-"||!(e instanceof AST_Number||e instanceof AST_Infinity)){var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}}return self});AST_Binary.DEFMETHOD("lift_sequences",function(compressor){if(compressor.option("sequences")){if(this.left instanceof AST_Sequence){var x=this.left.expressions.slice();var e=this.clone();e.left=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}if(this.right instanceof AST_Sequence&&!this.left.has_side_effects(compressor)){var assign=this.operator=="="&&this.left instanceof AST_SymbolRef;var x=this.right.expressions;var last=x.length-1;for(var i=0;i<last;i++){if(!assign&&x[i].has_side_effects(compressor))break}if(i==last){x=x.slice();var e=this.clone();e.right=x.pop();x.push(e);return make_sequence(this,x).optimize(compressor)}else if(i>0){var e=this.clone();e.right=make_sequence(this.right,x.slice(i));x=x.slice(0,i);x.push(e);return make_sequence(this,x).optimize(compressor)}}}return this});var commutativeOperators=makePredicate("== === != !== * & | ^");function is_object(node){return node instanceof AST_Array||node instanceof AST_Lambda||node instanceof AST_Object}OPT(AST_Binary,function(self,compressor){function reversible(){return self.left.is_constant()||self.right.is_constant()||!self.left.has_side_effects(compressor)&&!self.right.has_side_effects(compressor)}function reverse(op){if(reversible()){if(op)self.operator=op;var tmp=self.left;self.left=self.right;self.right=tmp}}if(commutativeOperators(self.operator)){if(self.right.is_constant()&&!self.left.is_constant()){if(!(self.left instanceof AST_Binary&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){reverse()}}}self=self.lift_sequences(compressor);if(compressor.option("comparisons"))switch(self.operator){case"===":case"!==":var is_strict_comparison=true;if(self.left.is_string(compressor)&&self.right.is_string(compressor)||self.left.is_number(compressor)&&self.right.is_number(compressor)||self.left.is_boolean()&&self.right.is_boolean()||self.left.equivalent_to(self.right)){self.operator=self.operator.substr(0,2)}case"==":case"!=":if(!is_strict_comparison&&is_undefined(self.left,compressor)){self.left=make_node(AST_Null,self.left)}else if(compressor.option("typeofs")&&self.left instanceof AST_String&&self.left.value=="undefined"&&self.right instanceof AST_UnaryPrefix&&self.right.operator=="typeof"){var expr=self.right.expression;if(expr instanceof AST_SymbolRef?expr.is_declared(compressor):!(expr instanceof AST_PropAccess&&compressor.option("ie8"))){self.right=expr;self.left=make_node(AST_Undefined,self.left).optimize(compressor);if(self.operator.length==2)self.operator+="="}}else if(self.left instanceof AST_SymbolRef&&self.right instanceof AST_SymbolRef&&self.left.definition()===self.right.definition()&&is_object(self.left.fixed_value())){return make_node(self.operator[0]=="="?AST_True:AST_False,self)}break;case"&&":case"||":var lhs=self.left;if(lhs.operator==self.operator){lhs=lhs.right}if(lhs instanceof AST_Binary&&lhs.operator==(self.operator=="&&"?"!==":"===")&&self.right instanceof AST_Binary&&lhs.operator==self.right.operator&&(is_undefined(lhs.left,compressor)&&self.right.left instanceof AST_Null||lhs.left instanceof AST_Null&&is_undefined(self.right.left,compressor))&&!lhs.right.has_side_effects(compressor)&&lhs.right.equivalent_to(self.right.right)){var combined=make_node(AST_Binary,self,{operator:lhs.operator.slice(0,-1),left:make_node(AST_Null,self),right:lhs.right});if(lhs!==self.left){combined=make_node(AST_Binary,self,{operator:self.operator,left:self.left.left,right:combined})}return combined}break}if(self.operator=="+"&&compressor.in_boolean_context()){var ll=self.left.evaluate(compressor);var rr=self.right.evaluate(compressor);if(ll&&typeof ll=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.right,make_node(AST_True,self)]).optimize(compressor)}if(rr&&typeof rr=="string"){compressor.warn("+ in boolean context always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}}if(compressor.option("comparisons")&&self.is_boolean()){if(!(compressor.parent()instanceof AST_Binary)||compressor.parent()instanceof AST_Assign){var negated=make_node(AST_UnaryPrefix,self,{operator:"!",expression:self.negate(compressor,first_in_statement(compressor))});self=best_of(compressor,self,negated)}switch(self.operator){case">":reverse("<");break;case">=":reverse("<=");break}}if(self.operator=="+"){if(self.right instanceof AST_String&&self.right.getValue()==""&&self.left.is_string(compressor)){return self.left}if(self.left instanceof AST_String&&self.left.getValue()==""&&self.right.is_string(compressor)){return self.right}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.left instanceof AST_String&&self.left.left.getValue()==""&&self.right.is_string(compressor)){self.left=self.left.right;return self.transform(compressor)}}if(compressor.option("evaluate")){switch(self.operator){case"&&":var ll=self.left.truthy?true:self.left.falsy?false:self.left.evaluate(compressor);if(!ll){compressor.warn("Condition left of && always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.left).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of && always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){if(compressor.in_boolean_context()){compressor.warn("Boolean && always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_False,self)]).optimize(compressor)}else self.falsy=true}else if(!(rr instanceof AST_Node)){var parent=compressor.parent();if(parent.operator=="&&"&&parent.left===compressor.self()||compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free && [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}if(self.left.operator=="||"){var lr=self.left.right.evaluate(compressor);if(!lr)return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.right,alternative:self.left.right}).optimize(compressor)}break;case"||":var ll=self.left.truthy?true:self.left.falsy?false:self.left.evaluate(compressor);if(!ll){compressor.warn("Condition left of || always false [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,self.right]).optimize(compressor)}else if(!(ll instanceof AST_Node)){compressor.warn("Condition left of || always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.left).optimize(compressor)}var rr=self.right.evaluate(compressor);if(!rr){var parent=compressor.parent();if(parent.operator=="||"&&parent.left===compressor.self()||compressor.in_boolean_context()){compressor.warn("Dropping side-effect-free || [{file}:{line},{col}]",self.start);return self.left.optimize(compressor)}}else if(!(rr instanceof AST_Node)){if(compressor.in_boolean_context()){compressor.warn("Boolean || always true [{file}:{line},{col}]",self.start);return make_sequence(self,[self.left,make_node(AST_True,self)]).optimize(compressor)}else self.truthy=true}if(self.left.operator=="&&"){var lr=self.left.right.evaluate(compressor);if(lr&&!(lr instanceof AST_Node))return make_node(AST_Conditional,self,{condition:self.left.left,consequent:self.left.right,alternative:self.right}).optimize(compressor)}break}var associative=true;switch(self.operator){case"+":if(self.left instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_String,self.left,{value:""+self.left.getValue()+self.right.left.getValue(),start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.right instanceof AST_Constant&&self.left.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:self.left.left,right:make_node(AST_String,self.right,{value:""+self.left.right.getValue()+self.right.getValue(),start:self.left.right.start,end:self.right.end})})}if(self.left instanceof AST_Binary&&self.left.operator=="+"&&self.left.is_string(compressor)&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator=="+"&&self.right.left instanceof AST_Constant&&self.right.is_string(compressor)){self=make_node(AST_Binary,self,{operator:"+",left:make_node(AST_Binary,self.left,{operator:"+",left:self.left.left,right:make_node(AST_String,self.left.right,{value:""+self.left.right.getValue()+self.right.left.getValue(),start:self.left.right.start,end:self.right.left.end})}),right:self.right.right})}if(self.right instanceof AST_UnaryPrefix&&self.right.operator=="-"&&self.left.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.left,right:self.right.expression});break}if(self.left instanceof AST_UnaryPrefix&&self.left.operator=="-"&&reversible()&&self.right.is_number(compressor)){self=make_node(AST_Binary,self,{operator:"-",left:self.right,right:self.left.expression});break}case"*":associative=compressor.option("unsafe_math");case"&":case"|":case"^":if(self.left.is_number(compressor)&&self.right.is_number(compressor)&&reversible()&&!(self.left instanceof AST_Binary&&self.left.operator!=self.operator&&PRECEDENCE[self.left.operator]>=PRECEDENCE[self.operator])){var reversed=make_node(AST_Binary,self,{operator:self.operator,left:self.right,right:self.left});if(self.right instanceof AST_Constant&&!(self.left instanceof AST_Constant)){self=best_of(compressor,reversed,self)}else{self=best_of(compressor,self,reversed)}}if(associative&&self.is_number(compressor)){if(self.right instanceof AST_Binary&&self.right.operator==self.operator){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left,start:self.left.start,end:self.right.left.end}),right:self.right.right})}if(self.right instanceof AST_Constant&&self.left instanceof AST_Binary&&self.left.operator==self.operator){if(self.left.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.left,right:self.right,start:self.left.left.start,end:self.right.end}),right:self.left.right})}else if(self.left.right instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:self.left.right,right:self.right,start:self.left.right.start,end:self.right.end}),right:self.left.left})}}if(self.left instanceof AST_Binary&&self.left.operator==self.operator&&self.left.right instanceof AST_Constant&&self.right instanceof AST_Binary&&self.right.operator==self.operator&&self.right.left instanceof AST_Constant){self=make_node(AST_Binary,self,{operator:self.operator,left:make_node(AST_Binary,self.left,{operator:self.operator,left:make_node(AST_Binary,self.left.left,{operator:self.operator,left:self.left.right,right:self.right.left,start:self.left.right.start,end:self.right.left.end}),right:self.left.left}),right:self.right.right})}}}}if(self.right instanceof AST_Binary&&self.right.operator==self.operator&&(lazy_op(self.operator)||self.operator=="+"&&(self.right.left.is_string(compressor)||self.left.is_string(compressor)&&self.right.right.is_string(compressor)))){self.left=make_node(AST_Binary,self.left,{operator:self.operator,left:self.left,right:self.right.left});self.right=self.right.right;return self.transform(compressor)}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});function recursive_ref(compressor,def){var node;for(var i=0;node=compressor.parent(i);i++){if(node instanceof AST_Lambda){var name=node.name;if(name&&name.definition()===def)break}}return node}OPT(AST_SymbolRef,function(self,compressor){var def=self.resolve_defines(compressor);if(def){return def.optimize(compressor)}if(!compressor.option("ie8")&&is_undeclared_ref(self)&&(!self.scope.uses_with||!compressor.find_parent(AST_With))){switch(self.name){case"undefined":return make_node(AST_Undefined,self).optimize(compressor);case"NaN":return make_node(AST_NaN,self).optimize(compressor);case"Infinity":return make_node(AST_Infinity,self).optimize(compressor)}}if(compressor.option("reduce_vars")&&is_lhs(self,compressor.parent())!==self){var d=self.definition();var fixed=self.fixed_value();var single_use=d.single_use;if(single_use&&fixed instanceof AST_Lambda){if(d.scope!==self.scope&&(!compressor.option("reduce_funcs")||d.escaped==1||fixed.inlined)){single_use=false}else if(recursive_ref(compressor,d)){single_use=false}else if(d.scope!==self.scope||d.orig[0]instanceof AST_SymbolFunarg){single_use=fixed.is_constant_expression(self.scope);if(single_use=="f"){var scope=self.scope;do{if(scope instanceof AST_Defun||scope instanceof AST_Function){scope.inlined=true}}while(scope=scope.parent_scope)}}}if(single_use&&fixed){if(fixed instanceof AST_Defun){fixed._squeezed=true;fixed=make_node(AST_Function,fixed,fixed)}var value;if(d.recursive_refs>0&&fixed.name instanceof AST_SymbolDefun){value=fixed.clone(true);var defun_def=value.name.definition();var lambda_def=value.variables.get(value.name.name);var name=lambda_def&&lambda_def.orig[0];if(!(name instanceof AST_SymbolLambda)){name=make_node(AST_SymbolLambda,value.name,value.name);name.scope=value;value.name=name;lambda_def=value.def_function(name)}value.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef&&node.definition()===defun_def){node.thedef=lambda_def;lambda_def.references.push(node)}}))}else{value=fixed.optimize(compressor);if(value===fixed)value=fixed.clone(true)}return value}if(fixed&&d.should_replace===undefined){var init;if(fixed instanceof AST_This){if(!(d.orig[0]instanceof AST_SymbolFunarg)&&all(d.references,function(ref){return d.scope===ref.scope})){init=fixed}}else{var ev=fixed.evaluate(compressor);if(ev!==fixed&&(compressor.option("unsafe_regexp")||!(ev instanceof RegExp))){init=make_node_from_constant(ev,fixed)}}if(init){var value_length=init.optimize(compressor).print_to_string().length;var fn;if(has_symbol_ref(fixed)){fn=function(){var result=init.optimize(compressor);return result===init?result.clone(true):result}}else{value_length=Math.min(value_length,fixed.print_to_string().length);fn=function(){var result=best_of_expression(init.optimize(compressor),fixed);return result===init||result===fixed?result.clone(true):result}}var name_length=d.name.length;var overhead=0;if(compressor.option("unused")&&!compressor.exposed(d)){overhead=(name_length+2+value_length)/(d.references.length-d.assignments)}d.should_replace=value_length<=name_length+overhead?fn:false}else{d.should_replace=false}}if(d.should_replace){return d.should_replace()}}return self;function has_symbol_ref(value){var found;value.walk(new TreeWalker(function(node){if(node instanceof AST_SymbolRef)found=true;if(found)return true}));return found}});function is_atomic(lhs,self){return lhs instanceof AST_SymbolRef||lhs.TYPE===self.TYPE}OPT(AST_Undefined,function(self,compressor){if(compressor.option("unsafe_undefined")){var undef=find_variable(compressor,"undefined");if(undef){var ref=make_node(AST_SymbolRef,self,{name:"undefined",scope:undef.scope,thedef:undef});ref.is_undefined=true;return ref}}var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;return make_node(AST_UnaryPrefix,self,{operator:"void",expression:make_node(AST_Number,self,{value:0})})});OPT(AST_Infinity,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&is_atomic(lhs,self))return self;if(compressor.option("keep_infinity")&&!(lhs&&!is_atomic(lhs,self))&&!find_variable(compressor,"Infinity"))return self;return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:1}),right:make_node(AST_Number,self,{value:0})})});OPT(AST_NaN,function(self,compressor){var lhs=is_lhs(compressor.self(),compressor.parent());if(lhs&&!is_atomic(lhs,self)||find_variable(compressor,"NaN")){return make_node(AST_Binary,self,{operator:"/",left:make_node(AST_Number,self,{value:0}),right:make_node(AST_Number,self,{value:0})})}return self});function is_reachable(self,defs){var reachable=false;var find_ref=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_SymbolRef&&member(node.definition(),defs)){return reachable=true}});var scan_scope=new TreeWalker(function(node){if(reachable)return true;if(node instanceof AST_Scope&&node!==self){var parent=scan_scope.parent();if(parent instanceof AST_Call&&parent.expression===node)return;node.walk(find_ref);return true}});self.walk(scan_scope);return reachable}var ASSIGN_OPS=["+","-","/","*","%",">>","<<",">>>","|","^","&"];var ASSIGN_OPS_COMMUTATIVE=["*","|","^","&"];OPT(AST_Assign,function(self,compressor){var def;if(compressor.option("dead_code")&&self.left instanceof AST_SymbolRef&&(def=self.left.definition()).scope===compressor.find_parent(AST_Lambda)){var level=0,node,parent=self;do{node=parent;parent=compressor.parent(level++);if(parent instanceof AST_Exit){if(in_try(level,parent))break;if(is_reachable(def.scope,[def]))break;if(self.operator=="=")return self.right;def.fixed=false;return make_node(AST_Binary,self,{operator:self.operator.slice(0,-1),left:self.left,right:self.right}).optimize(compressor)}}while(parent instanceof AST_Binary&&parent.right===node||parent instanceof AST_Sequence&&parent.tail_node()===node)}self=self.lift_sequences(compressor);if(self.operator=="="&&self.left instanceof AST_SymbolRef&&self.right instanceof AST_Binary){if(self.right.left instanceof AST_SymbolRef&&self.right.left.name==self.left.name&&member(self.right.operator,ASSIGN_OPS)){self.operator=self.right.operator+"=";self.right=self.right.right}else if(self.right.right instanceof AST_SymbolRef&&self.right.right.name==self.left.name&&member(self.right.operator,ASSIGN_OPS_COMMUTATIVE)&&!self.right.left.has_side_effects(compressor)){self.operator=self.right.operator+"=";self.right=self.right.left}}return self;function in_try(level,node){var right=self.right;self.right=make_node(AST_Null,right);var may_throw=node.may_throw(compressor);self.right=right;var scope=self.left.definition().scope;var parent;while((parent=compressor.parent(level++))!==scope){if(parent instanceof AST_Try){if(parent.bfinally)return true;if(may_throw&&parent.bcatch)return true}}}});OPT(AST_Conditional,function(self,compressor){if(!compressor.option("conditionals"))return self;if(self.condition instanceof AST_Sequence){var expressions=self.condition.expressions.slice();self.condition=expressions.pop();expressions.push(self);return make_sequence(self,expressions)}var cond=self.condition.evaluate(compressor);if(cond!==self.condition){if(cond){compressor.warn("Condition always true [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.consequent)}else{compressor.warn("Condition always false [{file}:{line},{col}]",self.start);return maintain_this_binding(compressor.parent(),compressor.self(),self.alternative)}}var negated=cond.negate(compressor,first_in_statement(compressor));if(best_of(compressor,cond,negated)===negated){self=make_node(AST_Conditional,self,{condition:negated,consequent:self.alternative,alternative:self.consequent})}var condition=self.condition;var consequent=self.consequent;var alternative=self.alternative;if(condition instanceof AST_SymbolRef&&consequent instanceof AST_SymbolRef&&condition.definition()===consequent.definition()){return make_node(AST_Binary,self,{operator:"||",left:condition,right:alternative})}if(consequent instanceof AST_Assign&&alternative instanceof AST_Assign&&consequent.operator==alternative.operator&&consequent.left.equivalent_to(alternative.left)&&(!self.condition.has_side_effects(compressor)||consequent.operator=="="&&!consequent.left.has_side_effects(compressor))){return make_node(AST_Assign,self,{operator:consequent.operator,left:consequent.left,right:make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.right,alternative:alternative.right})})}var arg_index;if(consequent instanceof AST_Call&&alternative.TYPE===consequent.TYPE&&consequent.args.length>0&&consequent.args.length==alternative.args.length&&consequent.expression.equivalent_to(alternative.expression)&&!self.condition.has_side_effects(compressor)&&!consequent.expression.has_side_effects(compressor)&&typeof(arg_index=single_arg_diff())=="number"){var node=consequent.clone();node.args[arg_index]=make_node(AST_Conditional,self,{condition:self.condition,consequent:consequent.args[arg_index],alternative:alternative.args[arg_index]});return node}if(consequent instanceof AST_Conditional&&consequent.alternative.equivalent_to(alternative)){return make_node(AST_Conditional,self,{condition:make_node(AST_Binary,self,{left:self.condition,operator:"&&",right:consequent.condition}),consequent:consequent.consequent,alternative:alternative})}if(consequent.equivalent_to(alternative)){return make_sequence(self,[self.condition,consequent]).optimize(compressor)}if((consequent instanceof AST_Sequence||alternative instanceof AST_Sequence)&&consequent.tail_node().equivalent_to(alternative.tail_node())){return make_sequence(self,[make_node(AST_Conditional,self,{condition:self.condition,consequent:pop_seq(consequent),alternative:pop_seq(alternative)}),consequent.tail_node()]).optimize(compressor)}if(consequent instanceof AST_Binary&&consequent.operator=="||"&&consequent.right.equivalent_to(alternative)){return make_node(AST_Binary,self,{operator:"||",left:make_node(AST_Binary,self,{operator:"&&",left:self.condition,right:consequent.left}),right:alternative}).optimize(compressor)}var in_bool=compressor.in_boolean_context();if(is_true(self.consequent)){if(is_false(self.alternative)){return booleanize(self.condition)}return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition),right:self.alternative})}if(is_false(self.consequent)){if(is_true(self.alternative)){return booleanize(self.condition.negate(compressor))}return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition.negate(compressor)),right:self.alternative})}if(is_true(self.alternative)){return make_node(AST_Binary,self,{operator:"||",left:booleanize(self.condition.negate(compressor)),right:self.consequent})}if(is_false(self.alternative)){return make_node(AST_Binary,self,{operator:"&&",left:booleanize(self.condition),right:self.consequent})}return self;function booleanize(node){if(node.is_boolean())return node;return make_node(AST_UnaryPrefix,node,{operator:"!",expression:node.negate(compressor)})}function is_true(node){return node instanceof AST_True||in_bool&&node instanceof AST_Constant&&node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&!node.expression.getValue()}function is_false(node){return node instanceof AST_False||in_bool&&node instanceof AST_Constant&&!node.getValue()||node instanceof AST_UnaryPrefix&&node.operator=="!"&&node.expression instanceof AST_Constant&&node.expression.getValue()}function single_arg_diff(){var a=consequent.args;var b=alternative.args;for(var i=0,len=a.length;i<len;i++){if(!a[i].equivalent_to(b[i])){for(var j=i+1;j<len;j++){if(!a[j].equivalent_to(b[j]))return}return i}}}function pop_seq(node){if(!(node instanceof AST_Sequence))return make_node(AST_Number,node,{value:0});return make_sequence(node,node.expressions.slice(0,-1))}});OPT(AST_Boolean,function(self,compressor){if(compressor.in_boolean_context())return make_node(AST_Number,self,{value:+self.value});if(compressor.option("booleans")){var p=compressor.parent();if(p instanceof AST_Binary&&(p.operator=="=="||p.operator=="!=")){compressor.warn("Non-strict equality against boolean: {operator} {value} [{file}:{line},{col}]",{operator:p.operator,value:self.value,file:p.start.file,line:p.start.line,col:p.start.col});return make_node(AST_Number,self,{value:+self.value})}return make_node(AST_UnaryPrefix,self,{operator:"!",expression:make_node(AST_Number,self,{value:1-self.value})})}return self});OPT(AST_Sub,function(self,compressor){var expr=self.expression;var prop=self.property;if(compressor.option("properties")){var key=prop.evaluate(compressor);if(key!==prop){if(typeof key=="string"){if(key=="undefined"){key=undefined}else{var value=parseFloat(key);if(value.toString()==key){key=value}}}prop=self.property=best_of_expression(prop,make_node_from_constant(key,prop).transform(compressor));var property=""+key;if(is_identifier_string(property)&&property.length<=prop.print_to_string().length+1){return make_node(AST_Dot,self,{expression:expr,property:property}).optimize(compressor)}}}if(is_lhs(self,compressor.parent()))return self;if(key!==prop){var sub=self.flatten_object(property,compressor);if(sub){expr=self.expression=sub.expression;prop=self.property=sub.property}}if(compressor.option("properties")&&compressor.option("side_effects")&&prop instanceof AST_Number&&expr instanceof AST_Array){var index=prop.getValue();var elements=expr.elements;if(index in elements){var flatten=true;var values=[];for(var i=elements.length;--i>index;){var value=elements[i].drop_side_effect_free(compressor);if(value){values.unshift(value);if(flatten&&value.has_side_effects(compressor))flatten=false}}var retValue=elements[index];retValue=retValue instanceof AST_Hole?make_node(AST_Undefined,retValue):retValue;if(!flatten)values.unshift(retValue);while(--i>=0){var value=elements[i].drop_side_effect_free(compressor);if(value)values.unshift(value);else index--}if(flatten){values.push(retValue);return make_sequence(self,values).optimize(compressor)}else return make_node(AST_Sub,self,{expression:make_node(AST_Array,expr,{elements:values}),property:make_node(AST_Number,prop,{value:index})})}}var fn;if(compressor.option("arguments")&&expr instanceof AST_SymbolRef&&expr.name=="arguments"&&expr.definition().orig.length==1&&(fn=expr.scope)instanceof AST_Lambda&&prop instanceof AST_Number){var index=prop.getValue();var argname=fn.argnames[index];if(!argname&&!compressor.option("keep_fargs")){while(index>=fn.argnames.length){argname=make_node(AST_SymbolFunarg,fn,{name:fn.make_var_name("argument_"+fn.argnames.length),scope:fn});fn.argnames.push(argname);fn.enclosed.push(fn.def_variable(argname))}}if(argname){var sym=make_node(AST_SymbolRef,self,argname);sym.reference({});return sym}}var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});AST_Lambda.DEFMETHOD("contains_this",function(){var result;var self=this;self.walk(new TreeWalker(function(node){if(result)return true;if(node instanceof AST_This)return result=true;if(node!==self&&node instanceof AST_Scope)return true}));return result});AST_PropAccess.DEFMETHOD("flatten_object",function(key,compressor){if(!compressor.option("properties"))return;var expr=this.expression;if(expr instanceof AST_Object){var props=expr.properties;for(var i=props.length;--i>=0;){var prop=props[i];if(""+prop.key==key){if(!all(props,function(prop){return prop instanceof AST_ObjectKeyVal}))break;var value=prop.value;if(value instanceof AST_Function&&!(compressor.parent()instanceof AST_New)&&value.contains_this())break;return make_node(AST_Sub,this,{expression:make_node(AST_Array,expr,{elements:props.map(function(prop){return prop.value})}),property:make_node(AST_Number,this,{value:i})})}}}});OPT(AST_Dot,function(self,compressor){if(self.property=="arguments"||self.property=="caller"){compressor.warn("Function.protoype.{prop} not supported [{file}:{line},{col}]",{prop:self.property,file:self.start.file,line:self.start.line,col:self.start.col})}var def=self.resolve_defines(compressor);if(def){return def.optimize(compressor)}if(is_lhs(self,compressor.parent()))return self;if(compressor.option("unsafe_proto")&&self.expression instanceof AST_Dot&&self.expression.property=="prototype"){var exp=self.expression.expression;if(is_undeclared_ref(exp))switch(exp.name){case"Array":self.expression=make_node(AST_Array,self.expression,{elements:[]});break;case"Function":self.expression=make_node(AST_Function,self.expression,{argnames:[],body:[]});break;case"Number":self.expression=make_node(AST_Number,self.expression,{value:0});break;case"Object":self.expression=make_node(AST_Object,self.expression,{properties:[]});break;case"RegExp":self.expression=make_node(AST_RegExp,self.expression,{value:/t/});break;case"String":self.expression=make_node(AST_String,self.expression,{value:""});break}}var sub=self.flatten_object(self.property,compressor);if(sub)return sub.optimize(compressor);var ev=self.evaluate(compressor);if(ev!==self){ev=make_node_from_constant(ev,self).optimize(compressor);return best_of(compressor,ev,self)}return self});function literals_in_boolean_context(self,compressor){if(compressor.in_boolean_context()){return best_of(compressor,self,make_sequence(self,[self,make_node(AST_True,self)]).optimize(compressor))}return self}OPT(AST_Array,literals_in_boolean_context);OPT(AST_Object,literals_in_boolean_context);OPT(AST_RegExp,literals_in_boolean_context);OPT(AST_Return,function(self,compressor){if(self.value&&is_undefined(self.value,compressor)){self.value=null}return self});OPT(AST_VarDef,function(self,compressor){var defines=compressor.option("global_defs");if(defines&&HOP(defines,self.name.name)){compressor.warn("global_defs "+self.name.name+" redefined [{file}:{line},{col}]",self.start)}return self})})();
/***********************************************************************
A JavaScript tokenizer / parser / beautifier / compressor.
https://github.com/mishoo/UglifyJS2
@@ -427,6 +427,6 @@
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
***********************************************************************/
-"use strict";function find_builtins(reserved){["null","true","false","Infinity","-Infinity","undefined"].forEach(add);[Object,Array,Function,Number,String,Boolean,Error,Math,Date,RegExp].forEach(function(ctor){Object.getOwnPropertyNames(ctor).map(add);if(ctor.prototype){Object.getOwnPropertyNames(ctor.prototype).map(add)}});function add(name){push_uniq(reserved,name)}}function reserve_quoted_keys(ast,reserved){function add(name){push_uniq(reserved,name)}ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal&&node.quote){add(node.key)}else if(node instanceof AST_Sub){addStrings(node.property,add)}}))}function addStrings(node,add){node.walk(new TreeWalker(function(node){if(node instanceof AST_Sequence){addStrings(node.tail_node(),add)}else if(node instanceof AST_String){add(node.value)}else if(node instanceof AST_Conditional){addStrings(node.consequent,add);addStrings(node.alternative,add)}return true}))}function mangle_properties(ast,options){options=defaults(options,{builtins:false,cache:null,debug:false,keep_quoted:false,only_cache:false,regex:null,reserved:null},true);var reserved=options.reserved;if(!Array.isArray(reserved))reserved=[];if(!options.builtins)find_builtins(reserved);var cname=-1;var cache;if(options.cache){cache=options.cache.props;cache.each(function(mangled_name){push_uniq(reserved,mangled_name)})}else{cache=new Dictionary}var regex=options.regex;var debug=options.debug!==false;var debug_name_suffix;if(debug){debug_name_suffix=options.debug===true?"":options.debug}var names_to_mangle=[];var unmangleable=[];ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal){add(node.key)}else if(node instanceof AST_ObjectProperty){add(node.key.name)}else if(node instanceof AST_Dot){add(node.property)}else if(node instanceof AST_Sub){addStrings(node.property,add)}}));return ast.transform(new TreeTransformer(function(node){if(node instanceof AST_ObjectKeyVal){node.key=mangle(node.key)}else if(node instanceof AST_ObjectProperty){node.key.name=mangle(node.key.name)}else if(node instanceof AST_Dot){node.property=mangle(node.property)}else if(!options.keep_quoted&&node instanceof AST_Sub){node.property=mangleStrings(node.property)}}));function can_mangle(name){if(unmangleable.indexOf(name)>=0)return false;if(reserved.indexOf(name)>=0)return false;if(options.only_cache){return cache.has(name)}if(/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name))return false;return true}function should_mangle(name){if(regex&&!regex.test(name))return false;if(reserved.indexOf(name)>=0)return false;return cache.has(name)||names_to_mangle.indexOf(name)>=0}function add(name){if(can_mangle(name))push_uniq(names_to_mangle,name);if(!should_mangle(name)){push_uniq(unmangleable,name)}}function mangle(name){if(!should_mangle(name)){return name}var mangled=cache.get(name);if(!mangled){if(debug){var debug_mangled="_$"+name+"$"+debug_name_suffix+"_";if(can_mangle(debug_mangled)){mangled=debug_mangled}}if(!mangled){do{mangled=base54(++cname)}while(!can_mangle(mangled))}cache.set(name,mangled)}return mangled}function mangleStrings(node){return node.transform(new TreeTransformer(function(node){if(node instanceof AST_Sequence){var last=node.expressions.length-1;node.expressions[last]=mangleStrings(node.expressions[last])}else if(node instanceof AST_String){node.value=mangle(node.value)}else if(node instanceof AST_Conditional){node.consequent=mangleStrings(node.consequent);node.alternative=mangleStrings(node.alternative)}return node}))}}"use strict";var to_ascii=typeof atob=="undefined"?function(b64){return new Buffer(b64,"base64").toString()}:atob;var to_base64=typeof btoa=="undefined"?function(str){return new Buffer(str).toString("base64")}:btoa;function read_source_map(code){var match=/\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);if(!match){AST_Node.warn("inline source map not found");return null}return to_ascii(match[2])}function set_shorthand(name,options,keys){if(options[name]){keys.forEach(function(key){if(options[key]){if(typeof options[key]!="object")options[key]={};if(!(name in options[key]))options[key][name]=options[name]}})}}function init_cache(cache){if(!cache)return;if(!("props"in cache)){cache.props=new Dictionary}else if(!(cache.props instanceof Dictionary)){cache.props=Dictionary.fromObject(cache.props)}}function to_json(cache){return{props:cache.props.toObject()}}function minify(files,options){var warn_function=AST_Node.warn_function;try{options=defaults(options,{compress:{},ie8:false,keep_fnames:false,mangle:{},nameCache:null,output:{},parse:{},rename:undefined,sourceMap:false,timings:false,toplevel:false,warnings:false,wrap:false},true);var timings=options.timings&&{start:Date.now()};if(options.rename===undefined){options.rename=options.compress&&options.mangle}set_shorthand("ie8",options,["compress","mangle","output"]);set_shorthand("keep_fnames",options,["compress","mangle"]);set_shorthand("toplevel",options,["compress","mangle"]);set_shorthand("warnings",options,["compress"]);var quoted_props;if(options.mangle){options.mangle=defaults(options.mangle,{cache:options.nameCache&&(options.nameCache.vars||{}),eval:false,ie8:false,keep_fnames:false,properties:false,reserved:[],toplevel:false},true);if(options.mangle.properties){if(typeof options.mangle.properties!="object"){options.mangle.properties={}}if(options.mangle.properties.keep_quoted){quoted_props=options.mangle.properties.reserved;if(!Array.isArray(quoted_props))quoted_props=[];options.mangle.properties.reserved=quoted_props}if(options.nameCache&&!("cache"in options.mangle.properties)){options.mangle.properties.cache=options.nameCache.props||{}}}init_cache(options.mangle.cache);init_cache(options.mangle.properties.cache)}if(options.sourceMap){options.sourceMap=defaults(options.sourceMap,{content:null,filename:null,includeSources:false,root:null,url:null},true)}var warnings=[];if(options.warnings&&!AST_Node.warn_function){AST_Node.warn_function=function(warning){warnings.push(warning)}}if(timings)timings.parse=Date.now();var toplevel;if(files instanceof AST_Toplevel){toplevel=files}else{if(typeof files=="string"){files=[files]}options.parse=options.parse||{};options.parse.toplevel=null;for(var name in files)if(HOP(files,name)){options.parse.filename=name;options.parse.toplevel=parse(files[name],options.parse);if(options.sourceMap&&options.sourceMap.content=="inline"){if(Object.keys(files).length>1)throw new Error("inline source map only works with singular input");options.sourceMap.content=read_source_map(files[name])}}toplevel=options.parse.toplevel}if(quoted_props){reserve_quoted_keys(toplevel,quoted_props)}if(options.wrap){toplevel=toplevel.wrap_commonjs(options.wrap)}if(timings)timings.rename=Date.now();if(options.rename){toplevel.figure_out_scope(options.mangle);toplevel.expand_names(options.mangle)}if(timings)timings.compress=Date.now();if(options.compress)toplevel=new Compressor(options.compress).compress(toplevel);if(timings)timings.scope=Date.now();if(options.mangle)toplevel.figure_out_scope(options.mangle);if(timings)timings.mangle=Date.now();if(options.mangle){base54.reset();toplevel.compute_char_frequency(options.mangle);toplevel.mangle_names(options.mangle)}if(timings)timings.properties=Date.now();if(options.mangle&&options.mangle.properties){toplevel=mangle_properties(toplevel,options.mangle.properties)}if(timings)timings.output=Date.now();var result={};if(options.output.ast){result.ast=toplevel}if(!HOP(options.output,"code")||options.output.code){if(options.sourceMap){if(typeof options.sourceMap.content=="string"){options.sourceMap.content=JSON.parse(options.sourceMap.content)}options.output.source_map=SourceMap({file:options.sourceMap.filename,orig:options.sourceMap.content,root:options.sourceMap.root});if(options.sourceMap.includeSources){if(files instanceof AST_Toplevel){throw new Error("original source content unavailable")}else for(var name in files)if(HOP(files,name)){options.output.source_map.get().setSourceContent(name,files[name])}}}delete options.output.ast;delete options.output.code;var stream=OutputStream(options.output);toplevel.print(stream);result.code=stream.get();if(options.sourceMap){result.map=options.output.source_map.toString();if(options.sourceMap.url=="inline"){result.code+="\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,"+to_base64(result.map)}else if(options.sourceMap.url){result.code+="\n//# sourceMappingURL="+options.sourceMap.url}}}if(options.nameCache&&options.mangle){if(options.mangle.cache)options.nameCache.vars=to_json(options.mangle.cache);if(options.mangle.properties&&options.mangle.properties.cache){options.nameCache.props=to_json(options.mangle.properties.cache)}}if(timings){timings.end=Date.now();result.timings={parse:.001*(timings.rename-timings.parse),rename:.001*(timings.compress-timings.rename),compress:.001*(timings.scope-timings.compress),scope:.001*(timings.mangle-timings.scope),mangle:.001*(timings.properties-timings.mangle),properties:.001*(timings.output-timings.properties),output:.001*(timings.end-timings.output),total:.001*(timings.end-timings.start)}}if(warnings.length){result.warnings=warnings}return result}catch(ex){return{error:ex}}finally{AST_Node.warn_function=warn_function}}exports["Dictionary"]=Dictionary;exports["TreeWalker"]=TreeWalker;exports["TreeTransformer"]=TreeTransformer;exports["minify"]=minify;exports["parse"]=parse;exports["_push_uniq"]=push_uniq})(typeof UglifyJS=="undefined"?UglifyJS={}:UglifyJS);
+"use strict";function find_builtins(reserved){["null","true","false","Infinity","-Infinity","undefined"].forEach(add);[Object,Array,Function,Number,String,Boolean,Error,Math,Date,RegExp].forEach(function(ctor){Object.getOwnPropertyNames(ctor).map(add);if(ctor.prototype){Object.getOwnPropertyNames(ctor.prototype).map(add)}});function add(name){push_uniq(reserved,name)}}function reserve_quoted_keys(ast,reserved){function add(name){push_uniq(reserved,name)}ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal&&node.quote){add(node.key)}else if(node instanceof AST_Sub){addStrings(node.property,add)}}))}function addStrings(node,add){node.walk(new TreeWalker(function(node){if(node instanceof AST_Sequence){addStrings(node.tail_node(),add)}else if(node instanceof AST_String){add(node.value)}else if(node instanceof AST_Conditional){addStrings(node.consequent,add);addStrings(node.alternative,add)}return true}))}function mangle_properties(ast,options){options=defaults(options,{builtins:false,cache:null,debug:false,keep_quoted:false,only_cache:false,regex:null,reserved:null},true);var reserved=options.reserved;if(!Array.isArray(reserved))reserved=[];if(!options.builtins)find_builtins(reserved);var cname=-1;var cache;if(options.cache){cache=options.cache.props;cache.each(function(mangled_name){push_uniq(reserved,mangled_name)})}else{cache=new Dictionary}var regex=options.regex;var debug=options.debug!==false;var debug_name_suffix;if(debug){debug_name_suffix=options.debug===true?"":options.debug}var names_to_mangle=[];var unmangleable=[];ast.walk(new TreeWalker(function(node){if(node instanceof AST_ObjectKeyVal){add(node.key)}else if(node instanceof AST_ObjectProperty){add(node.key.name)}else if(node instanceof AST_Dot){add(node.property)}else if(node instanceof AST_Sub){addStrings(node.property,add)}}));return ast.transform(new TreeTransformer(function(node){if(node instanceof AST_ObjectKeyVal){node.key=mangle(node.key)}else if(node instanceof AST_ObjectProperty){node.key.name=mangle(node.key.name)}else if(node instanceof AST_Dot){node.property=mangle(node.property)}else if(!options.keep_quoted&&node instanceof AST_Sub){node.property=mangleStrings(node.property)}}));function can_mangle(name){if(unmangleable.indexOf(name)>=0)return false;if(reserved.indexOf(name)>=0)return false;if(options.only_cache){return cache.has(name)}if(/^-?[0-9]+(\.[0-9]+)?(e[+-][0-9]+)?$/.test(name))return false;return true}function should_mangle(name){if(regex&&!regex.test(name))return false;if(reserved.indexOf(name)>=0)return false;return cache.has(name)||names_to_mangle.indexOf(name)>=0}function add(name){if(can_mangle(name))push_uniq(names_to_mangle,name);if(!should_mangle(name)){push_uniq(unmangleable,name)}}function mangle(name){if(!should_mangle(name)){return name}var mangled=cache.get(name);if(!mangled){if(debug){var debug_mangled="_$"+name+"$"+debug_name_suffix+"_";if(can_mangle(debug_mangled)){mangled=debug_mangled}}if(!mangled){do{mangled=base54(++cname)}while(!can_mangle(mangled))}cache.set(name,mangled)}return mangled}function mangleStrings(node){return node.transform(new TreeTransformer(function(node){if(node instanceof AST_Sequence){var last=node.expressions.length-1;node.expressions[last]=mangleStrings(node.expressions[last])}else if(node instanceof AST_String){node.value=mangle(node.value)}else if(node instanceof AST_Conditional){node.consequent=mangleStrings(node.consequent);node.alternative=mangleStrings(node.alternative)}return node}))}}"use strict";var to_ascii=typeof atob=="undefined"?function(b64){return new Buffer(b64,"base64").toString()}:atob;var to_base64=typeof btoa=="undefined"?function(str){return new Buffer(str).toString("base64")}:btoa;function read_source_map(code){var match=/\n\/\/# sourceMappingURL=data:application\/json(;.*?)?;base64,(.*)/.exec(code);if(!match){AST_Node.warn("inline source map not found");return null}return to_ascii(match[2])}function set_shorthand(name,options,keys){if(options[name]){keys.forEach(function(key){if(options[key]){if(typeof options[key]!="object")options[key]={};if(!(name in options[key]))options[key][name]=options[name]}})}}function init_cache(cache){if(!cache)return;if(!("props"in cache)){cache.props=new Dictionary}else if(!(cache.props instanceof Dictionary)){cache.props=Dictionary.fromObject(cache.props)}}function to_json(cache){return{props:cache.props.toObject()}}function minify(files,options){var warn_function=AST_Node.warn_function;try{options=defaults(options,{compress:{},ie8:false,keep_fnames:false,mangle:{},nameCache:null,output:{},parse:{},rename:undefined,sourceMap:false,timings:false,toplevel:false,warnings:false,wrap:false},true);var timings=options.timings&&{start:Date.now()};if(options.rename===undefined){options.rename=options.compress&&options.mangle}set_shorthand("ie8",options,["compress","mangle","output"]);set_shorthand("keep_fnames",options,["compress","mangle"]);set_shorthand("toplevel",options,["compress","mangle"]);set_shorthand("warnings",options,["compress"]);var quoted_props;if(options.mangle){options.mangle=defaults(options.mangle,{cache:options.nameCache&&(options.nameCache.vars||{}),eval:false,ie8:false,keep_fnames:false,properties:false,reserved:[],toplevel:false},true);if(options.mangle.properties){if(typeof options.mangle.properties!="object"){options.mangle.properties={}}if(options.mangle.properties.keep_quoted){quoted_props=options.mangle.properties.reserved;if(!Array.isArray(quoted_props))quoted_props=[];options.mangle.properties.reserved=quoted_props}if(options.nameCache&&!("cache"in options.mangle.properties)){options.mangle.properties.cache=options.nameCache.props||{}}}init_cache(options.mangle.cache);init_cache(options.mangle.properties.cache)}if(options.sourceMap){options.sourceMap=defaults(options.sourceMap,{content:null,filename:null,includeSources:false,root:null,url:null},true)}var warnings=[];if(options.warnings&&!AST_Node.warn_function){AST_Node.warn_function=function(warning){warnings.push(warning)}}if(timings)timings.parse=Date.now();var toplevel;if(files instanceof AST_Toplevel){toplevel=files}else{if(typeof files=="string"){files=[files]}options.parse=options.parse||{};options.parse.toplevel=null;for(var name in files)if(HOP(files,name)){options.parse.filename=name;options.parse.toplevel=parse(files[name],options.parse);if(options.sourceMap&&options.sourceMap.content=="inline"){if(Object.keys(files).length>1)throw new Error("inline source map only works with singular input");options.sourceMap.content=read_source_map(files[name])}}toplevel=options.parse.toplevel}if(quoted_props){reserve_quoted_keys(toplevel,quoted_props)}if(options.wrap){toplevel=toplevel.wrap_commonjs(options.wrap)}if(timings)timings.rename=Date.now();if(options.rename){toplevel.figure_out_scope(options.mangle);toplevel.expand_names(options.mangle)}if(timings)timings.compress=Date.now();if(options.compress)toplevel=new Compressor(options.compress).compress(toplevel);if(timings)timings.scope=Date.now();if(options.mangle)toplevel.figure_out_scope(options.mangle);if(timings)timings.mangle=Date.now();if(options.mangle){toplevel.compute_char_frequency(options.mangle);toplevel.mangle_names(options.mangle)}if(timings)timings.properties=Date.now();if(options.mangle&&options.mangle.properties){toplevel=mangle_properties(toplevel,options.mangle.properties)}if(timings)timings.output=Date.now();var result={};if(options.output.ast){result.ast=toplevel}if(!HOP(options.output,"code")||options.output.code){if(options.sourceMap){if(typeof options.sourceMap.content=="string"){options.sourceMap.content=JSON.parse(options.sourceMap.content)}options.output.source_map=SourceMap({file:options.sourceMap.filename,orig:options.sourceMap.content,root:options.sourceMap.root});if(options.sourceMap.includeSources){if(files instanceof AST_Toplevel){throw new Error("original source content unavailable")}else for(var name in files)if(HOP(files,name)){options.output.source_map.get().setSourceContent(name,files[name])}}}delete options.output.ast;delete options.output.code;var stream=OutputStream(options.output);toplevel.print(stream);result.code=stream.get();if(options.sourceMap){result.map=options.output.source_map.toString();if(options.sourceMap.url=="inline"){result.code+="\n//# sourceMappingURL=data:application/json;charset=utf-8;base64,"+to_base64(result.map)}else if(options.sourceMap.url){result.code+="\n//# sourceMappingURL="+options.sourceMap.url}}}if(options.nameCache&&options.mangle){if(options.mangle.cache)options.nameCache.vars=to_json(options.mangle.cache);if(options.mangle.properties&&options.mangle.properties.cache){options.nameCache.props=to_json(options.mangle.properties.cache)}}if(timings){timings.end=Date.now();result.timings={parse:.001*(timings.rename-timings.parse),rename:.001*(timings.compress-timings.rename),compress:.001*(timings.scope-timings.compress),scope:.001*(timings.mangle-timings.scope),mangle:.001*(timings.properties-timings.mangle),properties:.001*(timings.output-timings.properties),output:.001*(timings.end-timings.output),total:.001*(timings.end-timings.start)}}if(warnings.length){result.warnings=warnings}return result}catch(ex){return{error:ex}}finally{AST_Node.warn_function=warn_function}}exports["Dictionary"]=Dictionary;exports["TreeWalker"]=TreeWalker;exports["TreeTransformer"]=TreeTransformer;exports["minify"]=minify;exports["parse"]=parse;exports["_push_uniq"]=push_uniq})(typeof UglifyJS=="undefined"?UglifyJS={}:UglifyJS);