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- var $ = require('../internals/export');
- var hasOwn = require('../internals/has-own-property');
- var isSymbol = require('../internals/is-symbol');
- var tryToString = require('../internals/try-to-string');
- var shared = require('../internals/shared');
- var NATIVE_SYMBOL_REGISTRY = require('../internals/native-symbol-registry');
- var SymbolToStringRegistry = shared('symbol-to-string-registry');
- // `Symbol.keyFor` method
- // https://tc39.es/ecma262/#sec-symbol.keyfor
- $({ target: 'Symbol', stat: true, forced: !NATIVE_SYMBOL_REGISTRY }, {
- keyFor: function keyFor(sym) {
- if (!isSymbol(sym)) throw TypeError(tryToString(sym) + ' is not a symbol');
- if (hasOwn(SymbolToStringRegistry, sym)) return SymbolToStringRegistry[sym];
- }
- });
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