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HackTimer V1

Uses a Web Worker to ensure high-precision timing for setInterval and setTimeout.

当前为 2025-10-18 提交的版本，查看 最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.org/scripts/552983/1679761/HackTimer%20V1.js 

// ==UserScript==
// @license      MIT
// @name         HackTimer V1
// @namespace    HackTimer
// @version      1.0.4.2
// @description  Uses a Web Worker to ensure high-precision timing for setInterval and setTimeout.
// @grant        none
// ==/UserScript==

(function (workerScript) {
    if (!/MSIE 10/i.test(navigator.userAgent)) {
        try {
            var blob = new Blob([`
var fakeIdToId = {};
onmessage = function (event) {
    var data = event.data,
        name = data.name,
        fakeId = data.fakeId,
        time;
    if (data.hasOwnProperty('time')) {
        time = data.time;
    }
    switch (name) {
        case 'setInterval':
            fakeIdToId[fakeId] = setInterval(function () {
                postMessage({fakeId: fakeId});
            }, time);
            break;
        case 'clearInterval':
            if (fakeIdToId.hasOwnProperty(fakeId)) {
                clearInterval(fakeIdToId[fakeId]);
                delete fakeIdToId[fakeId];
            }
            break;
        case 'setTimeout':
            fakeIdToId[fakeId] = setTimeout(function () {
                postMessage({fakeId: fakeId});
                if (fakeIdToId.hasOwnProperty(fakeId)) {
                    delete fakeIdToId[fakeId];
                }
            }, time);
            break;
        case 'clearTimeout':
            if (fakeIdToId.hasOwnProperty(fakeId)) {
                clearTimeout(fakeIdToId[fakeId]);
                delete fakeIdToId[fakeId];
            }
            break;
    }
}
`], { type: 'application/javascript' });
            workerScript = window.URL.createObjectURL(blob);
        } catch (error) {
            console.warn('HackTimer: Blob not supported, using external script');
        }
    }

    var worker,
        fakeIdToCallback = new Map(),
        lastFakeId = 0,
        maxFakeId = 0x25FFFFFFFFFFFF, // 64-bit maximum
        logPrefix = 'HackTimer: ';

    if (typeof Worker !== 'undefined') {
        function getFakeId() {
            do {
                lastFakeId = (lastFakeId === maxFakeId) ? 0 : lastFakeId + 1;
            } while (fakeIdToCallback.has(lastFakeId));
            return lastFakeId;
        }

        function executeCallback(fakeId) {
            const request = fakeIdToCallback.get(fakeId);
            if (!request) return;

            const { callback, parameters, isTimeout } = request;
            
            if (isTimeout) {
                fakeIdToCallback.delete(fakeId);
            }

            let callbackFunc = callback;
            if (typeof callback === 'string') {
                try {
                    callbackFunc = new Function(callback);
                } catch (error) {
                    console.error(logPrefix + 'Error parsing callback:', error);
                    return;
                }
            }

            if (typeof callbackFunc === 'function') {
                try {
                    callbackFunc.apply(window, parameters);
                } catch (error) {
                    console.error(logPrefix + 'Error executing callback:', error);
                }
            }
        }

        try {
            worker = new Worker(workerScript);
            
            const originalSetInterval = window.setInterval;
            const originalClearInterval = window.clearInterval;
            const originalSetTimeout = window.setTimeout;
            const originalClearTimeout = window.clearTimeout;

            window.setInterval = function (callback, time, ...parameters) {
                const fakeId = getFakeId();
                fakeIdToCallback.set(fakeId, {
                    callback: callback,
                    parameters: parameters,
                    isTimeout: false
                });
                worker.postMessage({
                    name: 'setInterval',
                    fakeId: fakeId,
                    time: Math.max(0, time || 0)
                });
                return fakeId;
            };

            window.clearInterval = function (fakeId) {
                if (fakeIdToCallback.has(fakeId)) {
                    fakeIdToCallback.delete(fakeId);
                    worker.postMessage({
                        name: 'clearInterval',
                        fakeId: fakeId
                    });
                }
            };

            window.setTimeout = function (callback, time, ...parameters) {
                const fakeId = getFakeId();
                fakeIdToCallback.set(fakeId, {
                    callback: callback,
                    parameters: parameters,
                    isTimeout: true
                });
                worker.postMessage({
                    name: 'setTimeout',
                    fakeId: fakeId,
                    time: Math.max(0, time || 0)
                });
                return fakeId;
            };

            window.clearTimeout = function (fakeId) {
                if (fakeIdToCallback.has(fakeId)) {
                    fakeIdToCallback.delete(fakeId);
                    worker.postMessage({
                        name: 'clearTimeout',
                        fakeId: fakeId
                    });
                }
            };

            worker.onmessage = function (event) {
                const { fakeId } = event.data;
                executeCallback(fakeId);
            };

            worker.onerror = function (event) {
                console.error(logPrefix + 'Worker error:', event);
            };

        } catch (error) {
            console.error(logPrefix + 'Initialisation failed:', error);
        }
    } else {
        console.warn(logPrefix + 'Web Workers not supported');
    }
})('HackTimerWorker.js');