var toPrimitive = require('../internals/to-primitive');
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var isSymbol = require('../internals/is-symbol');
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// `ToPropertyKey` abstract operation
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// https://tc39.es/ecma262/#sec-topropertykey
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module.exports = function (argument) {
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var key = toPrimitive(argument, 'string');
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return isSymbol(key) ? key : key + '';
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};
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