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- var isSymbol = require('./isSymbol');
-
- /** Used as references for various `Number` constants. */
- var INFINITY = 1 / 0;
-
- /**
- * Converts `value` to a string key if it's not a string or symbol.
- *
- * @private
- * @param {*} value The value to inspect.
- * @returns {string|symbol} Returns the key.
- */
- function toKey(value) {
- if (typeof value == 'string' || isSymbol(value)) {
- return value;
- }
- var result = (value + '');
- return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
- }
-
- module.exports = toKey;
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