var getBuiltIn = require('../internals/get-built-in');
+var uncurryThis = require('../internals/function-uncurry-this');
var getOwnPropertyNamesModule = require('../internals/object-get-own-property-names');
var getOwnPropertySymbolsModule = require('../internals/object-get-own-property-symbols');
var anObject = require('../internals/an-object');
+var concat = uncurryThis([].concat);
+
// all object keys, includes non-enumerable and symbols
module.exports = getBuiltIn('Reflect', 'ownKeys') || function ownKeys(it) {
var keys = getOwnPropertyNamesModule.f(anObject(it));
var getOwnPropertySymbols = getOwnPropertySymbolsModule.f;
- return getOwnPropertySymbols ? keys.concat(getOwnPropertySymbols(it)) : keys;
+ return getOwnPropertySymbols ? concat(keys, getOwnPropertySymbols(it)) : keys;
};