Function toKey

test/babel.js:10328–10334

* 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.

(value)

	 * @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;