Sha256: c50ae71c3ef008e490282ad8943f3a85f241de18f4cdf2e5a6e1284c09fbef21
Contents?: true
Size: 1.9 KB
Versions: 7
Compression:
Stored size: 1.9 KB
Contents
require 'ruby2js'
module Ruby2JS
module Filter
module ESM
include SEXP
def initialize(*args)
@esm_include = nil
super
end
def process(node)
return super if @esm_include
@esm_include = Set.new
@esm_exclude = Set.new
@esm_export = nil
result = super
esm_walk(result)
inventory = (@esm_include - @esm_exclude).to_a.sort
if inventory.empty? and not @esm_export
result
else
list = inventory.map do |name|
if name == "React" and defined? Ruby2JS::Filter::React
s(:import, "#{name.downcase}", s(:const, nil, name))
elsif not %w(JSON Object).include? name
s(:import, "./#{name.downcase}.js", s(:const, nil, name))
end
end
list.push result
if @esm_export
list.push s(:export, :default, s(:const, nil, @esm_export))
end
s(:begin, *list.compact)
end
end
# gather constants
def esm_walk(node)
# extract ivars and cvars
if node.type == :const and node.children.first == nil
@esm_include << node.children.last.to_s
elsif node.type == :xnode
name = node.children.first
@esm_include << name unless name.empty? or name =~ /^[a-z]/
elsif node.type == :casgn and node.children.first == nil
@esm_exclude << node.children[1].to_s
elsif node.type == :class and node.children.first.type == :const
if node.children.first.children.first == nil
name = node.children.first.children.last.to_s
@esm_exclude << name
@esm_export ||= name
end
end
# recurse
node.children.each do |child|
esm_walk(child) if Parser::AST::Node === child
end
end
end
DEFAULTS.push ESM
end
end
Version data entries
7 entries across 7 versions & 1 rubygems