_enum-keys.js
484 Bytes
// all enumerable object keys, includes symbols
var getKeys = require('./_object-keys');
var gOPS = require('./_object-gops');
var pIE = require('./_object-pie');
module.exports = function (it) {
var result = getKeys(it);
var getSymbols = gOPS.f;
if (getSymbols) {
var symbols = getSymbols(it);
var isEnum = pIE.f;
var i = 0;
var key;
while (symbols.length > i) if (isEnum.call(it, key = symbols[i++])) result.push(key);
} return result;
};