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LegacyGM.js

A userscript library for adding support back to GM_ non async functions

目前为 2025-05-01 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。如果你需要使用该库，请在脚本元属性加入：// @require https://update.cn-greasyfork.org/scripts/534637/1581323/LegacyGMjs.js 

  1. /* LegacyGM.js
  2.  - Version: 1.0.0
  3.  - Author: Haka
  4.  - Description: A userscript library for adding support back to GM_ non async functions
  5.  - GitHub: https://github.com/Psyyke/A.C.A.S/
  6. */
  7.  
  8. (async () => {
  9.     const noLegacyInfo = typeof globalThis?.GM_info === 'undefined' && typeof GM?.info !== 'undefined',
  10.           setValueExists = typeof GM?.setValue === 'function',
  11.           getValueExists = typeof GM?.getValue === 'function',
  12.           deleteValueExists = typeof GM?.deleteValue === 'function',
  13.           listValuesExists = typeof GM?.listValues === 'function',
  14.           openInTabExists = typeof GM?.openInTab === 'function';
  15.  
  16.     if(noLegacyInfo) globalThis.GM_info = GM.info;
  17.     if(!listValuesExists && !getValueExists && !setValueExists) return;
  18.  
  19.     const gmCache = {};
  20.     const gmFunctions = {
  21.         GM_setValue: (key, value) => {
  22.             GM.setValue(key, value);
  23.             gmCache[key] = value;
  24.         },
  25.         GM_getValue: (key, defaultValue) => {
  26.             return key in gmCache ? gmCache[key] : defaultValue;
  27.         },
  28.         GM_deleteValue: (key) => {
  29.             GM.deleteValue(key);
  30.             delete gmCache[key];
  31.         },
  32.         GM_listValues: () => {
  33.             return Object.keys(gmCache);
  34.         },
  35.         GM_openInTab: (url, options = false) => {
  36.             if(openInTabExists)
  37.                 return GM.openInTab(url, options);
  38.  
  39.             return window.open(url, '_blank');
  40.         },
  41.     };
  42.  
  43.     setInterval(async () => {
  44.         const keys = await GM.listValues();
  45.  
  46.         // Load existing
  47.         for(const key of keys) {
  48.             gmCache[key] = await GM.getValue(key);
  49.         }
  50.  
  51.         // Remove old
  52.         for(const key in gmCache) {
  53.             if(!keys.includes(key)) {
  54.                 delete gmCache[key];
  55.             }
  56.         }
  57.     }, 1);
  58.  
  59.  
  60.     // Define legacy functions
  61.     for(const [name, func] of Object.entries(gmFunctions)) {
  62.         if(typeof globalThis[name] === 'undefined') {
  63.             Object.defineProperty(globalThis, name, {
  64.                 value: func,
  65.                 writable: false,
  66.                 configurable: false,
  67.                 enumerable: false,
  68.             });
  69.         }
  70.     }
  71. });