Current File : /var/www/html/node_modules/es-abstract/2018/CopyDataProperties.js
'use strict';
var GetIntrinsic = require('get-intrinsic');
var $TypeError = GetIntrinsic('%TypeError%');
var callBound = require('call-bind/callBound');
var forEach = require('../helpers/forEach');
var OwnPropertyKeys = require('../helpers/OwnPropertyKeys');
var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
var CreateDataProperty = require('./CreateDataProperty');
var Get = require('./Get');
var IsArray = require('./IsArray');
var IsInteger = require('./IsInteger');
var IsPropertyKey = require('./IsPropertyKey');
var SameValue = require('./SameValue');
var ToNumber = require('./ToNumber');
var ToObject = require('./ToObject');
var Type = require('./Type');
// https://262.ecma-international.org/9.0/#sec-copydataproperties
module.exports = function CopyDataProperties(target, source, excludedItems) {
if (Type(target) !== 'Object') {
throw new $TypeError('Assertion failed: "target" must be an Object');
}
if (!IsArray(excludedItems)) {
throw new $TypeError('Assertion failed: "excludedItems" must be a List of Property Keys');
}
for (var i = 0; i < excludedItems.length; i += 1) {
if (!IsPropertyKey(excludedItems[i])) {
throw new $TypeError('Assertion failed: "excludedItems" must be a List of Property Keys');
}
}
if (typeof source === 'undefined' || source === null) {
return target;
}
var fromObj = ToObject(source);
var sourceKeys = OwnPropertyKeys(fromObj);
forEach(sourceKeys, function (nextKey) {
var excluded = false;
forEach(excludedItems, function (e) {
if (SameValue(e, nextKey) === true) {
excluded = true;
}
});
var enumerable = $isEnumerable(fromObj, nextKey) || (
// this is to handle string keys being non-enumerable in older engines
typeof source === 'string'
&& nextKey >= 0
&& IsInteger(ToNumber(nextKey))
);
if (excluded === false && enumerable) {
var propValue = Get(fromObj, nextKey);
CreateDataProperty(target, nextKey, propValue);
}
});
return target;
};
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