(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? factory() :
	typeof define === 'function' && define.amd ? define('GOVUKFrontend', factory) :
	(factory());
}(this, (function () { 'use strict';

	// @ts-nocheck
	(function (undefined) {

	// Detection from https://github.com/Financial-Times/polyfill-service/blob/master/packages/polyfill-library/polyfills/Object/defineProperty/detect.js
	var detect = (
	  // In IE8, defineProperty could only act on DOM elements, so full support
	  // for the feature requires the ability to set a property on an arbitrary object
	  'defineProperty' in Object && (function() {
	  	try {
	  		var a = {};
	  		Object.defineProperty(a, 'test', {value:42});
	  		return true;
	  	} catch(e) {
	  		return false
	  	}
	  }())
	);

	if (detect) return

	// Polyfill from https://cdn.polyfill.io/v2/polyfill.js?features=Object.defineProperty&flags=always
	(function (nativeDefineProperty) {

		var supportsAccessors = Object.prototype.hasOwnProperty('__defineGetter__');
		var ERR_ACCESSORS_NOT_SUPPORTED = 'Getters & setters cannot be defined on this javascript engine';
		var ERR_VALUE_ACCESSORS = 'A property cannot both have accessors and be writable or have a value';

		Object.defineProperty = function defineProperty(object, property, descriptor) {

			// Where native support exists, assume it
			if (nativeDefineProperty && (object === window || object === document || object === Element.prototype || object instanceof Element)) {
				return nativeDefineProperty(object, property, descriptor);
			}

			if (object === null || !(object instanceof Object || typeof object === 'object')) {
				throw new TypeError('Object.defineProperty called on non-object');
			}

			if (!(descriptor instanceof Object)) {
				throw new TypeError('Property description must be an object');
			}

			var propertyString = String(property);
			var hasValueOrWritable = 'value' in descriptor || 'writable' in descriptor;
			var getterType = 'get' in descriptor && typeof descriptor.get;
			var setterType = 'set' in descriptor && typeof descriptor.set;

			// handle descriptor.get
			if (getterType) {
				if (getterType !== 'function') {
					throw new TypeError('Getter must be a function');
				}
				if (!supportsAccessors) {
					throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
				}
				if (hasValueOrWritable) {
					throw new TypeError(ERR_VALUE_ACCESSORS);
				}
				Object.__defineGetter__.call(object, propertyString, descriptor.get);
			} else {
				object[propertyString] = descriptor.value;
			}

			// handle descriptor.set
			if (setterType) {
				if (setterType !== 'function') {
					throw new TypeError('Setter must be a function');
				}
				if (!supportsAccessors) {
					throw new TypeError(ERR_ACCESSORS_NOT_SUPPORTED);
				}
				if (hasValueOrWritable) {
					throw new TypeError(ERR_VALUE_ACCESSORS);
				}
				Object.__defineSetter__.call(object, propertyString, descriptor.set);
			}

			// OK to define value unconditionally - if a getter has been specified as well, an error would be thrown above
			if ('value' in descriptor) {
				object[propertyString] = descriptor.value;
			}

			return object;
		};
	}(Object.defineProperty));
	})
	.call('object' === typeof window && window || 'object' === typeof self && self || 'object' === typeof global && global || {});

	// @ts-nocheck

	(function(undefined) {
	  // Detection from https://github.com/Financial-Times/polyfill-service/blob/master/packages/polyfill-library/polyfills/Function/prototype/bind/detect.js
	  var detect = 'bind' in Function.prototype;

	  if (detect) return

	  // Polyfill from https://cdn.polyfill.io/v2/polyfill.js?features=Function.prototype.bind&flags=always
	  Object.defineProperty(Function.prototype, 'bind', {
	      value: function bind(that) { // .length is 1
	          // add necessary es5-shim utilities
	          var $Array = Array;
	          var $Object = Object;
	          var ObjectPrototype = $Object.prototype;
	          var ArrayPrototype = $Array.prototype;
	          var Empty = function Empty() {};
	          var to_string = ObjectPrototype.toString;
	          var hasToStringTag = typeof Symbol === 'function' && typeof Symbol.toStringTag === 'symbol';
	          var isCallable; /* inlined from https://npmjs.com/is-callable */ var fnToStr = Function.prototype.toString, tryFunctionObject = function tryFunctionObject(value) { try { fnToStr.call(value); return true; } catch (e) { return false; } }, fnClass = '[object Function]', genClass = '[object GeneratorFunction]'; isCallable = function isCallable(value) { if (typeof value !== 'function') { return false; } if (hasToStringTag) { return tryFunctionObject(value); } var strClass = to_string.call(value); return strClass === fnClass || strClass === genClass; };
	          var array_slice = ArrayPrototype.slice;
	          var array_concat = ArrayPrototype.concat;
	          var array_push = ArrayPrototype.push;
	          var max = Math.max;
	          // /add necessary es5-shim utilities

	          // 1. Let Target be the this value.
	          var target = this;
	          // 2. If IsCallable(Target) is false, throw a TypeError exception.
	          if (!isCallable(target)) {
	              throw new TypeError('Function.prototype.bind called on incompatible ' + target);
	          }
	          // 3. Let A be a new (possibly empty) internal list of all of the
	          //   argument values provided after thisArg (arg1, arg2 etc), in order.
	          // XXX slicedArgs will stand in for "A" if used
	          var args = array_slice.call(arguments, 1); // for normal call
	          // 4. Let F be a new native ECMAScript object.
	          // 11. Set the [[Prototype]] internal property of F to the standard
	          //   built-in Function prototype object as specified in 15.3.3.1.
	          // 12. Set the [[Call]] internal property of F as described in
	          //   15.3.4.5.1.
	          // 13. Set the [[Construct]] internal property of F as described in
	          //   15.3.4.5.2.
	          // 14. Set the [[HasInstance]] internal property of F as described in
	          //   15.3.4.5.3.
	          var bound;
	          var binder = function () {

	              if (this instanceof bound) {
	                  // 15.3.4.5.2 [[Construct]]
	                  // When the [[Construct]] internal method of a function object,
	                  // F that was created using the bind function is called with a
	                  // list of arguments ExtraArgs, the following steps are taken:
	                  // 1. Let target be the value of F's [[TargetFunction]]
	                  //   internal property.
	                  // 2. If target has no [[Construct]] internal method, a
	                  //   TypeError exception is thrown.
	                  // 3. Let boundArgs be the value of F's [[BoundArgs]] internal
	                  //   property.
	                  // 4. Let args be a new list containing the same values as the
	                  //   list boundArgs in the same order followed by the same
	                  //   values as the list ExtraArgs in the same order.
	                  // 5. Return the result of calling the [[Construct]] internal
	                  //   method of target providing args as the arguments.

	                  var result = target.apply(
	                      this,
	                      array_concat.call(args, array_slice.call(arguments))
	                  );
	                  if ($Object(result) === result) {
	                      return result;
	                  }
	                  return this;

	              } else {
	                  // 15.3.4.5.1 [[Call]]
	                  // When the [[Call]] internal method of a function object, F,
	                  // which was created using the bind function is called with a
	                  // this value and a list of arguments ExtraArgs, the following
	                  // steps are taken:
	                  // 1. Let boundArgs be the value of F's [[BoundArgs]] internal
	                  //   property.
	                  // 2. Let boundThis be the value of F's [[BoundThis]] internal
	                  //   property.
	                  // 3. Let target be the value of F's [[TargetFunction]] internal
	                  //   property.
	                  // 4. Let args be a new list containing the same values as the
	                  //   list boundArgs in the same order followed by the same
	                  //   values as the list ExtraArgs in the same order.
	                  // 5. Return the result of calling the [[Call]] internal method
	                  //   of target providing boundThis as the this value and
	                  //   providing args as the arguments.

	                  // equiv: target.call(this, ...boundArgs, ...args)
	                  return target.apply(
	                      that,
	                      array_concat.call(args, array_slice.call(arguments))
	                  );

	              }

	          };

	          // 15. If the [[Class]] internal property of Target is "Function", then
	          //     a. Let L be the length property of Target minus the length of A.
	          //     b. Set the length own property of F to either 0 or L, whichever is
	          //       larger.
	          // 16. Else set the length own property of F to 0.

	          var boundLength = max(0, target.length - args.length);

	          // 17. Set the attributes of the length own property of F to the values
	          //   specified in 15.3.5.1.
	          var boundArgs = [];
	          for (var i = 0; i < boundLength; i++) {
	              array_push.call(boundArgs, '$' + i);
	          }

	          // XXX Build a dynamic function with desired amount of arguments is the only
	          // way to set the length property of a function.
	          // In environments where Content Security Policies enabled (Chrome extensions,
	          // for ex.) all use of eval or Function costructor throws an exception.
	          // However in all of these environments Function.prototype.bind exists
	          // and so this code will never be executed.
	          bound = Function('binder', 'return function (' + boundArgs.join(',') + '){ return binder.apply(this, arguments); }')(binder);

	          if (target.prototype) {
	              Empty.prototype = target.prototype;
	              bound.prototype = new Empty();
	              // Clean up dangling references.
	              Empty.prototype = null;
	          }

	          // TODO
	          // 18. Set the [[Extensible]] internal property of F to true.

	          // TODO
	          // 19. Let thrower be the [[ThrowTypeError]] function Object (13.2.3).
	          // 20. Call the [[DefineOwnProperty]] internal method of F with
	          //   arguments "caller", PropertyDescriptor {[[Get]]: thrower, [[Set]]:
	          //   thrower, [[Enumerable]]: false, [[Configurable]]: false}, and
	          //   false.
	          // 21. Call the [[DefineOwnProperty]] internal method of F with
	          //   arguments "arguments", PropertyDescriptor {[[Get]]: thrower,
	          //   [[Set]]: thrower, [[Enumerable]]: false, [[Configurable]]: false},
	          //   and false.

	          // TODO
	          // NOTE Function objects created using Function.prototype.bind do not
	          // have a prototype property or the [[Code]], [[FormalParameters]], and
	          // [[Scope]] internal properties.
	          // XXX can't delete prototype in pure-js.

	          // 22. Return F.
	          return bound;
	      }
	  });
	})
	.call('object' === typeof window && window || 'object' === typeof self && self || 'object' === typeof global && global || {});

})));
//# sourceMappingURL=bind.js.map