function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; } function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; } function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); } import { isArray } from './array'; // --- Static --- export var assign = function assign() { return Object.assign.apply(Object, arguments); }; export var create = function create(proto, optionalProps) { return Object.create(proto, optionalProps); }; export var defineProperties = function defineProperties(obj, props) { return Object.defineProperties(obj, props); }; export var defineProperty = function defineProperty(obj, prop, descr) { return Object.defineProperty(obj, prop, descr); }; export var freeze = function freeze(obj) { return Object.freeze(obj); }; export var getOwnPropertyNames = function getOwnPropertyNames(obj) { return Object.getOwnPropertyNames(obj); }; export var getOwnPropertyDescriptor = function getOwnPropertyDescriptor(obj, prop) { return Object.getOwnPropertyDescriptor(obj, prop); }; export var getOwnPropertySymbols = function getOwnPropertySymbols(obj) { return Object.getOwnPropertySymbols(obj); }; export var getPrototypeOf = function getPrototypeOf(obj) { return Object.getPrototypeOf(obj); }; export var is = function is(value1, value2) { return Object.is(value1, value2); }; export var isFrozen = function isFrozen(obj) { return Object.isFrozen(obj); }; export var keys = function keys(obj) { return Object.keys(obj); }; // --- "Instance" --- export var hasOwnProperty = function hasOwnProperty(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }; export var toString = function toString(obj) { return Object.prototype.toString.call(obj); }; // --- Utilities --- /** * Quick object check - this is primarily used to tell * Objects from primitive values when we know the value * is a JSON-compliant type. * Note object could be a complex type like array, date, etc. */ export var isObject = function isObject(obj) { return obj !== null && _typeof(obj) === 'object'; }; /** * Strict object type check. Only returns true * for plain JavaScript objects. */ export var isPlainObject = function isPlainObject(obj) { return Object.prototype.toString.call(obj) === '[object Object]'; }; /** * Shallow copy an object. If the passed in object * is null or undefined, returns an empty object */ export var clone = function clone(obj) { return _objectSpread({}, obj); }; /** * Return a shallow copy of object with * the specified properties omitted * @link https://gist.github.com/bisubus/2da8af7e801ffd813fab7ac221aa7afc */ export var omit = function omit(obj, props) { return keys(obj).filter(function (key) { return props.indexOf(key) === -1; }).reduce(function (result, key) { return _objectSpread({}, result, _defineProperty({}, key, obj[key])); }, {}); }; /** * Convenience method to create a read-only descriptor */ export var readonlyDescriptor = function readonlyDescriptor() { return { enumerable: true, configurable: false, writable: false }; }; /** * Deep-freezes and object, making it immutable / read-only. * Returns the same object passed-in, but frozen. * Freezes inner object/array/values first. * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze * Note: this method will not work for property values using Symbol() as a key */ export var deepFreeze = function deepFreeze(obj) { // Retrieve the property names defined on object/array // Note: `keys` will ignore properties that are keyed by a `Symbol()` var props = keys(obj); // Iterate over each prop and recursively freeze it props.forEach(function (prop) { var value = obj[prop]; // If value is a plain object or array, we deepFreeze it obj[prop] = value && (isPlainObject(value) || isArray(value)) ? deepFreeze(value) : value; }); return freeze(obj); };