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Userscript Manager Detection

A Code Snippet for detecting if the script is being ran in an Userscript Manager.

Fra 16.10.2022. Se den seneste versjonen.

Dette scriptet burde ikke installeres direkte. Det er et bibliotek for andre script å inkludere med det nye metadirektivet // @require https://updategreasyfork.deno.dev/scripts/453189/1105660/Userscript%20Manager%20Detection.js 

// ==UserScript==
// @name         Userscript Manager Detection
// @namespace    http://tampermonkey.net/
// @version      1
// @description  A Code Snippet for detecting if the script is being ran in an Userscript Manager.
// @author       Taureon
// @include      *
// @grant        none
// @license      Unlicense
// ==/UserScript==

// Detect GreaseMonkey API objects
//data type: boolean
//true = It is being ran in an Userscript Manager
//false = It is being ran as a bookmarklet or it is being ran in an Userscript Manager that does not have GreaseMonkey API objects
var isInUserscriptContext = typeof GM === 'object' || typeof GM_info === 'object';

// Show result
//NOTE: This is not required, as it only serves for demonstration purposes.
alert(isInUserscriptContext ? 'I am being ran in an Userscript' : 'I am not being ran in an Userscript');