Overleaf Editor Custom VIM Keybindings

// ==UserScript==
// @name         Overleaf Editor Custom VIM Keybindings
// @namespace    http://tampermonkey.net/
// @version      0.1
// @match        https://www.overleaf.com/project/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    window.addEventListener("UNSTABLE_editor:extensions", (event) => {
        const { CodeMirror, CodeMirrorVim, extensions } = event.detail;

        // add custom keybindings - insert mode applies on insert
        CodeMirrorVim.Vim.map("kj", "<Esc>", "insert");
        // normal mode applies while escaped
        CodeMirrorVim.Vim.map("H", "^", "normal");
        CodeMirrorVim.Vim.map("L", "$", "normal");

        // visual mode mappings
        CodeMirrorVim.Vim.map("H", "^", "visual");
        CodeMirrorVim.Vim.map("L", "$", "visual");
    });
})();