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20 lines
791 B
20 lines
791 B
11 months ago
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'use strict';
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var global = require('../internals/global');
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var shared = require('../internals/shared');
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var hasOwn = require('../internals/has-own-property');
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var uid = require('../internals/uid');
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var NATIVE_SYMBOL = require('../internals/symbol-constructor-detection');
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var USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid');
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var Symbol = global.Symbol;
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var WellKnownSymbolsStore = shared('wks');
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var createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol['for'] || Symbol : Symbol && Symbol.withoutSetter || uid;
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module.exports = function (name) {
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if (!hasOwn(WellKnownSymbolsStore, name)) {
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WellKnownSymbolsStore[name] = NATIVE_SYMBOL && hasOwn(Symbol, name)
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? Symbol[name]
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: createWellKnownSymbol('Symbol.' + name);
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} return WellKnownSymbolsStore[name];
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};
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