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							68 lines
						
					
					
						
							2.0 KiB
						
					
					
				
			
		
		
	
	
							68 lines
						
					
					
						
							2.0 KiB
						
					
					
				'use strict'; | 
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var GetIntrinsic = require('get-intrinsic'); | 
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var $TypeError = GetIntrinsic('%TypeError%'); | 
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var callBound = require('call-bind/callBound'); | 
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var forEach = require('../helpers/forEach'); | 
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var OwnPropertyKeys = require('../helpers/OwnPropertyKeys'); | 
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var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable'); | 
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var CreateDataProperty = require('./CreateDataProperty'); | 
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var Get = require('./Get'); | 
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var IsArray = require('./IsArray'); | 
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var IsInteger = require('./IsInteger'); | 
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var IsPropertyKey = require('./IsPropertyKey'); | 
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var SameValue = require('./SameValue'); | 
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var ToNumber = require('./ToNumber'); | 
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var ToObject = require('./ToObject'); | 
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var Type = require('./Type'); | 
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// https://262.ecma-international.org/9.0/#sec-copydataproperties | 
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module.exports = function CopyDataProperties(target, source, excludedItems) { | 
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	if (Type(target) !== 'Object') { | 
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		throw new $TypeError('Assertion failed: "target" must be an Object'); | 
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	} | 
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	if (!IsArray(excludedItems)) { | 
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		throw new $TypeError('Assertion failed: "excludedItems" must be a List of Property Keys'); | 
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	} | 
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	for (var i = 0; i < excludedItems.length; i += 1) { | 
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		if (!IsPropertyKey(excludedItems[i])) { | 
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			throw new $TypeError('Assertion failed: "excludedItems" must be a List of Property Keys'); | 
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		} | 
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	} | 
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	if (typeof source === 'undefined' || source === null) { | 
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		return target; | 
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	} | 
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	var fromObj = ToObject(source); | 
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	var sourceKeys = OwnPropertyKeys(fromObj); | 
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	forEach(sourceKeys, function (nextKey) { | 
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		var excluded = false; | 
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		forEach(excludedItems, function (e) { | 
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			if (SameValue(e, nextKey) === true) { | 
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				excluded = true; | 
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			} | 
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		}); | 
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		var enumerable = $isEnumerable(fromObj, nextKey) || ( | 
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		// this is to handle string keys being non-enumerable in older engines | 
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			typeof source === 'string' | 
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            && nextKey >= 0 | 
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            && IsInteger(ToNumber(nextKey)) | 
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		); | 
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		if (excluded === false && enumerable) { | 
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			var propValue = Get(fromObj, nextKey); | 
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			CreateDataProperty(target, nextKey, propValue); | 
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		} | 
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	}); | 
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	return target; | 
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};
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