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'use strict';
var getBuiltIn = require('../internals/get-built-in');
var uncurryThis = require('../internals/function-uncurry-this');
var Symbol = getBuiltIn('Symbol');
var keyFor = Symbol.keyFor;
var thisSymbolValue = uncurryThis(Symbol.prototype.valueOf);
// `Symbol.isRegisteredSymbol` method
// https://tc39.es/proposal-symbol-predicates/#sec-symbol-isregisteredsymbol
module.exports = Symbol.isRegisteredSymbol || function isRegisteredSymbol(value) {
try {
return keyFor(thisSymbolValue(value)) !== undefined;
} catch (error) {
return false;
}
};