LegacyGM.js

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

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greatest.deepsurf.us/scripts/534637/1581445/LegacyGMjs.js

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You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

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You will need to install an extension such as Tampermonkey to install this script.

Sie müssten eine Skript Manager Erweiterung installieren damit sie dieses Skript installieren können

(Ich habe schon ein Skript Manager, Lass mich es installieren!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

/* LegacyGM.js
 - Version: 1.0.3
 - Author: Haka
 - Description: A userscript library for adding support back to GM_ non async functions
 - GitHub: https://github.com/Psyyke/A.C.A.S/
*/

async function LOAD_LEGACY_GM_SUPPORT() {
    if(typeof GM !== 'object') return;

    const noLegacyInfo =      typeof GM_info === 'undefined'              && typeof GM?.info !== 'undefined',
          onlyModernSet =     typeof GM?.setValue === 'function'          && typeof GM_setValue === 'undefined',
          onlyModernGet =     typeof GM?.getValue === 'function'          && typeof GM_getValue === 'undefined',
          onlyModernList =    typeof GM?.listValues === 'function'        && typeof GM_listValues === 'undefined',
          deleteValueExists = typeof GM?.deleteValue === 'function',
          openInTabExists =   typeof GM?.openInTab === 'function';

    if(noLegacyInfo) globalThis.GM_info = GM.info;
    if(!onlyModernList && !onlyModernGet && !onlyModernSet) return;

    const gmCache = {};
    const gmFunctions = {
        GM_setValue: (key, value) => {
            GM.setValue(key, value);
            gmCache[key] = value;
        },
        GM_getValue: (key, defaultValue) => {
            return key in gmCache ? gmCache[key] : defaultValue;
        },
        GM_deleteValue: (key) => {
            GM.deleteValue(key);
            delete gmCache[key];
        },
        GM_listValues: () => {
            return Object.keys(gmCache);
        },
        GM_openInTab: (url, options = false) => {
            if(openInTabExists)
                return GM.openInTab(url, options);

            return window.open(url, '_blank');
        },
    };

    setInterval(async () => {
        const keys = await GM.listValues();

        // Load existing
        for(const key of keys) {
            gmCache[key] = await GM.getValue(key);
        }

        // Remove old
        for(const key in gmCache) {
            if(!keys.includes(key)) {
                delete gmCache[key];
            }
        }
    }, 1);


    // Define legacy functions
    for(const [name, func] of Object.entries(gmFunctions)) {
        if(typeof globalThis[name] === 'undefined') {
            Object.defineProperty(globalThis, name, {
                value: func,
                writable: false,
                configurable: false,
                enumerable: false,
            });
        }
    }
}