Github - Format pull request message

pr-format.user.js

// ==UserScript==
// @name         Github - Format pull request message
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Set default value for new PR description
// @author       Shmulik Flint
// @match        https://github.com/wix-private/*/compare/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    const text = document.getElementById('pull_request_body');
    if (!text) {
        return;
    }

    let prefix = "## Motivation";
    const repoLink = document.querySelector('[data-pjax="#js-repo-pjax-container"]');
    if (repoLink && repoLink.text == 'wixos') {
        prefix += ' (consider adding *ping* label)';
    }

    if (!text.value.startsWith('#')) {
        text.value = `${prefix}\n${text.value}`;
    }
})();