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17 lines
752 B
17 lines
752 B
var global = require('../internals/global'); |
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var shared = require('../internals/shared'); |
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var has = require('../internals/has'); |
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var uid = require('../internals/uid'); |
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var NATIVE_SYMBOL = require('../internals/native-symbol'); |
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var USE_SYMBOL_AS_UID = require('../internals/use-symbol-as-uid'); |
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var WellKnownSymbolsStore = shared('wks'); |
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var Symbol = global.Symbol; |
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var createWellKnownSymbol = USE_SYMBOL_AS_UID ? Symbol : Symbol && Symbol.withoutSetter || uid; |
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module.exports = function (name) { |
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if (!has(WellKnownSymbolsStore, name)) { |
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if (NATIVE_SYMBOL && has(Symbol, name)) WellKnownSymbolsStore[name] = Symbol[name]; |
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else WellKnownSymbolsStore[name] = createWellKnownSymbol('Symbol.' + name); |
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} return WellKnownSymbolsStore[name]; |
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};
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