2a09d1a4
liuqimichale
添加宜春 天水 宣化
|
1
2
3
4
5
6
7
8
9
10
11
12
13
|
'use strict';
var origSymbol = global.Symbol;
var hasSymbolSham = require('./shams');
module.exports = function hasNativeSymbols() {
if (typeof origSymbol !== 'function') { return false; }
if (typeof Symbol !== 'function') { return false; }
if (typeof origSymbol('foo') !== 'symbol') { return false; }
if (typeof Symbol('bar') !== 'symbol') { return false; }
return hasSymbolSham();
};
|