source: frontend/node_modules/es-abstract/2018/EnumerableOwnPropertyNames.js

'use strict';

var $TypeError = require('es-errors/type');
var isObject = require('es-object-atoms/isObject');

var objectKeys = require('object-keys');
var safePushApply = require('safe-push-apply');
var callBound = require('call-bound');

var $isEnumerable = callBound('Object.prototype.propertyIsEnumerable');

var forEach = require('../helpers/forEach');

// https://262.ecma-international.org/8.0/#sec-enumerableownproperties

module.exports = function EnumerableOwnPropertyNames(O, kind) {
        if (!isObject(O)) {
                throw new $TypeError('Assertion failed: Type(O) is not Object');
        }

        var keys = objectKeys(O);
        if (kind === 'key') {
                return keys;
        }
        if (kind === 'value' || kind === 'key+value') {
                var results = [];
                forEach(keys, function (key) {
                        if ($isEnumerable(O, key)) {
                                safePushApply(results, [
                                        kind === 'value' ? O[key] : [key, O[key]]
                                ]);
                        }
                });
                return results;
        }
        throw new $TypeError('Assertion failed: "kind" is not "key", "value", or "key+value": ' + kind);
};