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