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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $TypeError = GetIntrinsic('%TypeError%');
- var callBound = require('call-bind/callBound');
- var forEach = require('../helpers/forEach');
- var every = require('../helpers/every');
- var some = require('../helpers/some');
- var OwnPropertyKeys = require('../helpers/OwnPropertyKeys');
- var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');
- var CreateDataPropertyOrThrow = require('./CreateDataPropertyOrThrow');
- var Get = require('./Get');
- var IsArray = require('./IsArray');
- var IsIntegralNumber = require('./IsIntegralNumber');
- var IsPropertyKey = require('./IsPropertyKey');
- var SameValue = require('./SameValue');
- var ToNumber = require('./ToNumber');
- var ToObject = require('./ToObject');
- var Type = require('./Type');
- // https://www.ecma-international.org/ecma-262/12.0/#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) || !every(excludedItems, IsPropertyKey)) {
- throw new $TypeError('Assertion failed: "excludedItems" must be a List of Property Keys');
- }
- if (typeof source === 'undefined' || source === null) {
- return target;
- }
- var from = ToObject(source);
- var keys = OwnPropertyKeys(from);
- forEach(keys, function (nextKey) {
- var excluded = some(excludedItems, function (e) {
- return SameValue(e, nextKey) === true;
- });
- /*
- var excluded = false;
- forEach(excludedItems, function (e) {
- if (SameValue(e, nextKey) === true) {
- excluded = true;
- }
- });
- */
- var enumerable = $isEnumerable(from, nextKey) || (
- // this is to handle string keys being non-enumerable in older engines
- typeof source === 'string'
- && nextKey >= 0
- && IsIntegralNumber(ToNumber(nextKey))
- );
- if (excluded === false && enumerable) {
- var propValue = Get(from, nextKey);
- CreateDataPropertyOrThrow(target, nextKey, propValue);
- }
- });
- return target;
- };
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