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