123456789101112131415161718192021222324252627282930313233 |
- 'use strict';
- // 19.1.2.1 Object.assign(target, source, ...)
- var getKeys = require('./_object-keys')
- , gOPS = require('./_object-gops')
- , pIE = require('./_object-pie')
- , toObject = require('./_to-object')
- , IObject = require('./_iobject')
- , $assign = Object.assign;
- // should work with symbols and should have deterministic property order (V8 bug)
- module.exports = !$assign || require('./_fails')(function(){
- var A = {}
- , B = {}
- , S = Symbol()
- , K = 'abcdefghijklmnopqrst';
- A[S] = 7;
- K.split('').forEach(function(k){ B[k] = k; });
- return $assign({}, A)[S] != 7 || Object.keys($assign({}, B)).join('') != K;
- }) ? function assign(target, source){ // eslint-disable-line no-unused-vars
- var T = toObject(target)
- , aLen = arguments.length
- , index = 1
- , getSymbols = gOPS.f
- , isEnum = pIE.f;
- while(aLen > index){
- var S = IObject(arguments[index++])
- , keys = getSymbols ? getKeys(S).concat(getSymbols(S)) : getKeys(S)
- , length = keys.length
- , j = 0
- , key;
- while(length > j)if(isEnum.call(S, key = keys[j++]))T[key] = S[key];
- } return T;
- } : $assign;
|