Add empty file

githubMergeDescription.user.js

// ==UserScript==
// @name        GitHub PR Add Merge Description
// @version     1.0.0
// @description A userscript that adds merge commit description
// @license     MIT
// @author      Hasan Kumar
// @namespace   https://github.com/mintuhouse
// @include     https://github.com/*
// @run-at      document-idle
// @grant       none
// @icon        https://github.githubassets.com/pinned-octocat.svg
// @updateURL   https://gist.github.com/mintuhouse/688f62ca583736cbec8622eedf93fbfd/raw/githubMergeDescription.user.js
// @downloadURL https://gist.github.com/mintuhouse/688f62ca583736cbec8622eedf93fbfd/raw/githubMergeDescription.user.js
// ==/UserScript==
(() => {
	"use strict";

  function addDescription(){
    const prDescription = $('.timeline-comment .js-comment-field').value;
    const mergeDescElement = $('#merge_message_field');
    mergeDescElement.value = prDescription;
    mergeDescElement.style.height = mergeDescElement.scrollHeight + 'px';
  }

	function addDescriptionEvent() {
		$("body").addEventListener("click", event => {
			const target = event.target;
			if (target && target.classList.contains("btn-group-merge")) {
        setTimeout(addDescription, 0);
			}
		});
	}

	function $(str, el) {
		return (el || document).querySelector(str);
	}

	addDescriptionEvent();

})();