devextreme/cjs/core/utils/comparator.js

HTML5 JavaScript Component Suite for Responsive Web Development

/**
 * DevExtreme (cjs/core/utils/comparator.js)
 * Version: 21.1.4
 * Build date: Mon Jun 21 2021
 *
 * Copyright (c) 2012 - 2021 Developer Express Inc. ALL RIGHTS RESERVED
 * Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
 */

"use strict";
exports.equals = void 0;
var _dom_adapter = _interopRequireDefault(require("../dom_adapter"));
var _data = require("./data");
var _type = require("./type");

function _interopRequireDefault(obj) {
    return obj && obj.__esModule ? obj : {
        default: obj
    }
}

function _typeof(obj) {
    if ("function" === typeof Symbol && "symbol" === typeof Symbol.iterator) {
        _typeof = function(obj) {
            return typeof obj
        }
    } else {
        _typeof = function(obj) {
            return obj && "function" === typeof Symbol && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj
        }
    }
    return _typeof(obj)
}
var hasNegation = function(oldValue, newValue) {
    return 1 / oldValue === 1 / newValue
};
var equals = function(oldValue, newValue) {
    oldValue = (0, _data.toComparable)(oldValue, true);
    newValue = (0, _data.toComparable)(newValue, true);
    if (oldValue && newValue && (0, _type.isRenderer)(oldValue) && (0, _type.isRenderer)(newValue)) {
        return newValue.is(oldValue)
    }
    var oldValueIsNaN = oldValue !== oldValue;
    var newValueIsNaN = newValue !== newValue;
    if (oldValueIsNaN && newValueIsNaN) {
        return true
    }
    if (0 === oldValue && 0 === newValue) {
        return hasNegation(oldValue, newValue)
    }
    if (null === oldValue || "object" !== _typeof(oldValue) || _dom_adapter.default.isElementNode(oldValue)) {
        return oldValue === newValue
    }
    return false
};
exports.equals = equals;