Script allowing you to control time.
// ==UserScript==
// @name Time Control
// @description Script allowing you to control time.
// @icon https://parsefiles.back4app.com/JPaQcFfEEQ1ePBxbf6wvzkPMEqKYHhPYv8boI1Rc/ce262758ff44d053136358dcd892979d_low_res_Time_Machine.png
// @namespace mailto:lucaszheng2011@outlook.com
// @version 1.2.6
// @author lucaszheng
// @license MIT
//
// @match *://*/*
// @grant unsafeWindow
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_deleteValue
// @inject-into page
// @run-at document-start
// ==/UserScript==
/*globals unsafeWindow,GM_setValue,GM_getValue,GM_deleteValue*/
(function (window) {
'use strict';
let scale = 1, pristine = true;
/** @type {null | number} */
let timeJump = null;
let timeReset = false;
let debug = false;
const {
Reflect: {
apply, construct,
setPrototypeOf,
getPrototypeOf
},
Object: {
defineProperty,
freeze
},
Number: {
isFinite
},
Symbol: {
toPrimitive,
toStringTag
},
console: {
trace: log
}
} = window;
function update() {
for (let idx = 0; idx < updaters.length; idx++) {
updaters[idx]();
}
}
/**
* @param {'string' | 'number' | 'default'} type
*/
function timeToPrimitive(type) {
switch (type) {
case 'string': return this.toString();
default: return this.now;
}
}
function timeToString() {
return apply(date.toString, construct(DateConstructor, [this.now]), []);
}
const time = {
[toStringTag]: 'time',
[toPrimitive]: timeToPrimitive,
toString: timeToString,
/**
* @param {number} newTime
*/
jump(newTime) {
if (newTime == null) return;
pristine = false;
timeJump = +newTime;
update();
timeJump = null;
},
reset(resetTime = true, resetScale = true, resetDebug = true) {
if (resetDebug) debug = false;
if (pristine) return;
if (resetScale) scale = 1;
if (!resetTime) return;
timeReset = true;
update();
timeReset = false;
pristine = scale === 1;
},
storage: {
[toStringTag]: 'storage',
[toPrimitive]: timeToPrimitive,
toString: timeToString,
/**
* @param {number} newTime
*/
jump(newTime) {
GM_setValue('baseTime', time.real);
GM_setValue('contTime', +newTime);
},
save(saveTime = true, saveScale = true, saveDebug = true) {
if (saveDebug) {
if (debug === false) time.storage.reset(false, false, true);
else time.storage.debug = debug;
}
if (saveTime) {
if (pristine) time.storage.reset(true, false, false);
else time.storage.now = time.now;
}
if (saveScale) {
if (scale === 1) time.storage.reset(false, true, false);
else time.storage.scale = scale;
}
},
load(loadTime = true, loadScale = true, loadDebug = true) {
if (loadDebug) time.debug = time.storage.debug;
if (time.storage.pristine) return time.reset(true, true, false);
if (loadTime) {
let baseTime = GM_getValue('baseTime', null);
let contTime = GM_getValue('contTime', null);
if (baseTime != null && contTime != null)
time.jump((time.real - baseTime) + contTime);
}
if (loadScale) time.scale = time.storage.scale;
},
reset(resetTime = true, resetScale = true, resetDebug = true) {
if (resetTime) {
GM_deleteValue('baseTime');
GM_deleteValue('contTime');
}
if (resetScale) GM_deleteValue('scale');
if (resetDebug) GM_deleteValue('debug');
},
get debug() { return GM_getValue('debug', false); },
set debug(value) { GM_setValue('debug', !!value); },
get now() {
let baseTime = GM_getValue('baseTime', null);
let contTime = GM_getValue('contTime', null);
if (baseTime != null && contTime != null)
return (time.real - baseTime) + contTime;
return time.real;
},
set now(value) { time.storage.jump(value); },
get pristine() {
let baseTime = GM_getValue('baseTime', null);
let contTime = GM_getValue('contTime', null);
let scale = GM_getValue('scale', null);
return (baseTime == null || contTime == null) && scale == null;
},
set pristine(value) {
if (!value) return;
time.storage.reset(true, true, false);
},
get real() { return apply(date.realTime, DateConstructor, []); },
get scale() {
let scale = GM_getValue('scale', null);
if (scale != null) return scale;
return 1;
},
set scale(value) {
if (value === time.storage.scale) return;
GM_setValue('scale', +value);
}
},
get debug() { return debug; },
set debug(value) { debug = !!value; },
get now() { return apply(date.now, DateConstructor, []); },
set now(value) { time.jump(value); },
get pristine() { return pristine; },
set pristine(value) { if (value) time.reset(); },
get real() { return apply(date.realTime, DateConstructor, []); },
get scale() { return scale; },
set scale(value) {
value = +value;
if (value === scale) return;
pristine = false; update(); scale = value;
}
};
freeze(time.storage);
defineProperty(getPrototypeOf(window), 'time', {
value: freeze(time),
writable: true,
enumerable: false,
configurable: true
});
/** @type {(() => void)[]} */
const updaters = [];
/**
* @param {() => number} func
* @param {any} self
*/
function wrap_now(func, self, offset = 0) {
let baseTime = 0;
let contTime = baseTime;
/** @type {ProxyHandler<typeof func>} */
const handler = {
apply(target, self, args) {
if (debug) log('apply(%o, %o, %o)', target, self, args);
let time = apply(target, self, args);
if (pristine || !isFinite(time)) return time;
return ((time - baseTime) * scale) + contTime;
}
};
setPrototypeOf(handler, null);
updaters[updaters.length] =
function update() {
if (!handler.apply) return;
contTime = timeJump == null ? handler.apply(func, self, []) : timeJump + offset;
baseTime = apply(func, self, []);
if (timeReset) contTime = baseTime;
};
return new Proxy(func, handler);
}
window.Performance.prototype.now = wrap_now(
window.Performance.prototype.now,
window.performance,
window.performance.now() - window.Date.now()
);
const DateConstructor = window.Date;
/** @type {{ realTime: typeof Date.now, now: typeof Date.now, toString: typeof Date.prototype.toString, handler: ProxyHandler<DateConstructor> }} */
const date = {
realTime: window.Date.now,
now: wrap_now(window.Date.now, window.Date),
toString: DateConstructor.prototype.toString,
handler: {
apply(target, self, args) {
if (debug) log('apply(%o, %o, %o)', target, self, args);
if (pristine) return DateConstructor();
return time.toString();
},
construct(target, args, newTarget) {
if (debug) log('construct(%o, %o, %o)', target, args, newTarget);
if (!pristine && args.length < 1) {
args[0] = time.now;
}
return construct(DateConstructor, args, newTarget);
}
}
};
setPrototypeOf(date, null);
setPrototypeOf(date.handler, null);
DateConstructor.now = date.now;
window.Date = new Proxy(DateConstructor, date.handler);
window.Date.prototype.constructor = window.Date;
function noop() { }
/**
* @param {(handler: TimerHandler, timeout?: number | undefined, ...args: any[]) => number} func
*/
function wrap_timer(func) {
/** @type {ProxyHandler<typeof func>} */
const handler = {
apply(target, self, args) {
if (debug) log('apply(%o, %o, %o)', target, self, args);
if (!pristine && args.length > 1) {
args[1] = +args[1];
if (args[1] && scale === 0)
args[0] = noop;
else if (args[1] && isFinite(args[1]))
args[1] /= scale;
}
return apply(target, self, args);
}
};
setPrototypeOf(handler, null);
return new Proxy(func, handler);
}
window.setTimeout = wrap_timer(window.setTimeout);
window.setInterval = wrap_timer(window.setInterval);
time.storage.load();
})(/** @type {typeof window} */(unsafeWindow));