monaco-yaml/src/languageservice/utils/objects.ts

/*---------------------------------------------------------------------------------------------
 *  Copyright (c) Microsoft Corporation. All rights reserved.
 *  Licensed under the MIT License. See License.txt in the project root for license information.
 *--------------------------------------------------------------------------------------------*/
'use strict';

export function equals(one: any, other: any): boolean {
    if (one === other) {
        return true;
    }
    if (one === null || one === undefined || other === null || other === undefined) {
        return false;
    }
    if (typeof one !== typeof other) {
        return false;
    }
    if (typeof one !== 'object') {
        return false;
    }
    if ((Array.isArray(one)) !== (Array.isArray(other))) {
        return false;
    }

    var i: number,
        key: string;

    if (Array.isArray(one)) {
        if (one.length !== other.length) {
            return false;
        }
        for (i = 0; i < one.length; i++) {
            if (!equals(one[i], other[i])) {
                return false;
            }
        }
    } else {
        var oneKeys: string[] = [];

        for (key in one) {
            oneKeys.push(key);
        }
        oneKeys.sort();
        var otherKeys: string[] = [];
        for (key in other) {
            otherKeys.push(key);
        }
        otherKeys.sort();
        if (!equals(oneKeys, otherKeys)) {
            return false;
        }
        for (i = 0; i < oneKeys.length; i++) {
            if (!equals(one[oneKeys[i]], other[oneKeys[i]])) {
                return false;
            }
        }
    }
    return true;
}