00001 var isSymbol = require('./isSymbol');
00002
00004 var INFINITY = 1 / 0;
00005
00013 function toKey(value) {
00014 if (typeof value == 'string' || isSymbol(value)) {
00015 return value;
00016 }
00017 var result = (value + '');
00018 return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
00019 }
00020
00021 module.exports = toKey;