Server : Apache System : Linux server2.corals.io 4.18.0-348.2.1.el8_5.x86_64 #1 SMP Mon Nov 15 09:17:08 EST 2021 x86_64 User : corals ( 1002) PHP Version : 7.4.33 Disable Function : exec,passthru,shell_exec,system Directory :  /home/corals/cartforge.co/vendor/magento/module-ui/view/base/web/js/lib/view/utils/

Upload File : current_dir [ Writeable ] document_root [ Writeable ]

/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

define([], function () {
    'use strict';

    var processMap = new WeakMap(),
        origRaf,
        raf;

    origRaf = window.requestAnimationFrame ||
        window.webkitRequestAnimationFrame ||
        window.mozRequestAnimationFrame ||
        window.onRequestAnimationFrame ||
        window.msRequestAnimationFrame ||
        function (callback) {
            if (typeof callback != 'function') {
                throw new Error('raf argument "callback" must be of type function');
            }
            window.setTimeout(callback, 1000 / 60);
        };

    /**
     * Creates new process object or extracts the
     * the existing one.
     *
     * @param {*} id - Process identifier.
     * @param {Number} fps - Required FPS count.
     * @returns {Object}
     */
    function getProcess(id, fps) {
        var process = processMap.get(id);

        if (!process) {
            process = {};
            processMap.set(id, process);
        }

        if (process.fps !== fps) {
            process.fps        = fps;
            process.interval   = 1000 / fps;
            process.update     = Date.now();
        }

        return process;
    }

    /**
     * Proxy method which delegates call to the 'requestAnimationFrame'
     * function and optionally can keep track of the FPS with which
     * provided function is called.
     *
     * @param {Function} callback - Callback function to be passed to 'requestAnimationFrame'.
     * @param {Number} [fps] - If specified, will update FPS counter for the provided function.
     * @returns {Number|Boolean} ID of request or a flag which indicates
     *      whether callback fits specified FPS.
     */
    raf = function (callback, fps) {
        var rafId = origRaf(callback);

        return fps ? raf.tick(callback, fps) : rafId;
    };

    /**
     * Updates FPS counter for the specified process
     * and returns a flag which indicates whether
     * counter value is equal or greater than the required FPS.
     *
     * @param {*} id - Process identifier.
     * @param {Number} fps - Required FPS count.
     * @returns {Boolean}
     */
    raf.tick = function (id, fps) {
        var process  = getProcess(id, fps),
            now      = Date.now(),
            delta    = now - process.update,
            interval = process.interval;

        if (fps >= 60 || delta >= interval) {
            process.update = now - delta % interval;

            return true;
        }

        return false;
    };

    return raf;
});