Example of automating VS Code with puppeteer

electron-puppeteer.js

const childProcess = require('child_process');
const puppeteer = require('puppeteer');
const request = require('request-promise-native');
var delay = require('timeout-as-promise');

function spawn(port) {
  return childProcess.spawn(
    // '/Applications/Visual\ Studio\ Code\ -\ Insiders.app/Contents/MacOS/Electron',
    '/Applications/Visual Studio Code.app/Contents/MacOS/Electron',
    [
      `--remote-debugging-port=${port || 9229}`,
      '--user-data-dir=/tmp/arsietnr', // arbitrary not-mine datadir to get the welcome screen
      '--enable-logging',
    ],
    {
      detached: true,
      env: process.env,
      stido: ['pipe', 'pipe', 'pipe']
    }
  );
}

async function main(){
  const port = 29378;

  const proc = spawn(port);

  await delay(2000);

  const resp = await request(`http://127.0.0.1:${port}/json/list`);
  const devToolsPages = JSON.parse(resp);
  const endpoint = devToolsPages.find(p => !p.title.match(/^sharedProcess/));

  const browser = await puppeteer.connect({
    browserWSEndpoint: endpoint.webSocketDebuggerUrl,
    defaultViewport: null, // used to bypass Chrome viewport issue, doesn't work w/ VS code.
    slowMo: 50
  })

  await delay(1000);

  const page = (await browser.pages())[0];

  await page.click('[href="command:workbench.action.files.newUntitledFile"]');

  await page.type('.monaco-editor', 'Woo! I am automating Visual Studio Code with puppeteer!\n');
  await page.type('.monaco-editor', 'This would be a super cool way of generating foolproof demos.');
  
  setTimeout(() => proc.kill(), 1000);

}

main();

package.json

{
  "name": "electron-puppeteer",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "puppeteer": "^1.1.0",
    "request": "^2.88.0",
    "request-promise-native": "^1.0.5",
    "timeout-as-promise": "^1.0.0"
  }
}