@ui5/webcomponents-localization/dist/sap/base/util/isPlainObject.js

Localization for UI5 Web Components

/*!
 * OpenUI5
 * (c) Copyright 2009-2024 SAP SE or an SAP affiliate company.
 * Licensed under the Apache License, Version 2.0 - see LICENSE.txt.
 */

var class2type = {};
var hasOwn = class2type.hasOwnProperty;
var toString = class2type.toString;
var fnToString = hasOwn.toString;
var ObjectFunctionString = fnToString.call(Object);

/**
 * Checks whether the object is a plain object (created using "{}" or "new Object").
 *
 * @function
 * @since 1.58
 * @public
 * @alias module:sap/base/util/isPlainObject
 * @param {Object} obj the object which is checked
 * @returns {boolean} whether or not the object is a plain object (created using "{}" or "new Object").
 */
var fnIsPlainObject = function (obj) {
  /*
   * The code in this function is taken from jQuery 3.6.0 "jQuery.isPlainObject" and got modified.
   *
   * jQuery JavaScript Library v3.6.0
   * http://jquery.com/
   *
   * Copyright OpenJS Foundation and other contributors
   * Released under the MIT license
   * http://jquery.org/license
   */
  var proto, Ctor;

  // Detect obvious negatives
  // Use toString instead of jQuery.type to catch host objects
  if (!obj || toString.call(obj) !== "[object Object]") {
    return false;
  }
  proto = Object.getPrototypeOf(obj);

  // Objects with no prototype (e.g., `Object.create( null )`) are plain
  if (!proto) {
    return true;
  }

  // Objects with a prototype are considered plain only if they were constructed by a global Object function
  Ctor = hasOwn.call(proto, "constructor") && proto.constructor;
  return typeof Ctor === "function" && fnToString.call(Ctor) === ObjectFunctionString;
};
export default fnIsPlainObject;