16 lines
353 B
JavaScript
16 lines
353 B
JavaScript
/* eslint-disable valid-typeof */
|
|
var staticStrUndefined = require('./staticStrUndefined')
|
|
|
|
/**
|
|
* 判断是否WeakMap对象
|
|
*
|
|
* @param {Object} obj 对象
|
|
* @return {Boolean}
|
|
*/
|
|
var supportWeakMap = typeof WeakMap !== staticStrUndefined
|
|
function isWeakMap (obj) {
|
|
return supportWeakMap && obj instanceof WeakMap
|
|
}
|
|
|
|
module.exports = isWeakMap
|