bug 修复

rk

15 小时以前 bd6229ebd9cb543a22944ecb1142fad92b675dce

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'use strict';
var defineWellKnownSymbol = require('../internals/well-known-symbol-define');
 
// `Symbol.unscopables` well-known symbol
// https://tc39.es/ecma262/#sec-symbol.unscopables
defineWellKnownSymbol('unscopables');