增加井号重复判断

‘liusuyi’

2023-07-03 29d8ea701df5bba27bda837a550853b299207040

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var NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');
 
/* eslint-disable es/no-symbol -- safe */
module.exports = NATIVE_SYMBOL && !!Symbol['for'] && !!Symbol.keyFor;