This a template project that helps you write Greasemonkey/Tampermonkey/ViolentMonkey scripts with KotlinJs

I configured a Gradle task buildUserScript that will generate a userscript file. The task will concat the script metadata from main/resources/metadata.txt, the kotlin.js and your generated javascript file. Then it will append main(); to the script, which will execute the main() of your Kotlin Code.

The script will be outputed to /build/distributions/$NAMEOFYOURGRADLEPROJECT.user.js

The gradle task will be triggered after every Gradle build task

You can configure the metadata of your userscript inside /src/main/resources/metadata.txt

Write your Kotlin Code inside src/main/kotlin. The main() will be executed first by the userscript.

When you use gradle -t build inside your project folder, Gradle will detect all changes to your Kotlin Code and metadata.txt file, and will compile and generate a new userscript on every change. The detection of changes on the userscript depends on your used addon. E.g. Violentmonkey supports tracking of file changes in Chrome (https://violentmonkey.github.io/posts/how-to-edit-scripts-with-your-favorite-editor/) and it can detect changes on a new generated userscript.

Let's create a script thats alerts "Hello GitHub" on every page of GitHub.

Add this inside your /main/resources/metadata.txt

// ==UserScript==
// @name        MyNew script - KotlinJs
// @namespace   GtvMonkey Scripts
// @grant       none
// @version     1.0
// @author      -
// @description 10/16/2020, 9:43:07 PM
// @include     https://github.com/*
// ==/UserScript==

You can find out more about the Metadata section HERE

This is your Kotlin Code

fun main() {
    window.alert("Hello Github!")
}

Run the build task of Gradle and you will find a *.user.js inside /build/distributions. Add this file to your wanted userscript browser addon and you are done.

This project is licensed under the Apache License, Version 2.0 - see the LICENSE.md file for details

Copyright 2020 Jens Klingenberg

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.