Login to Google Account via Puppeteer

google_login.ts

import puppeteer from 'puppeteer-extra';
import pluginStealth from 'puppeteer-extra-plugin-stealth'; // Use v2.4.5 instead of latest
import * as readline from 'readline';

puppeteer.use(pluginStealth());

// Use '-h' arg for headful login.
const headless = !process.argv.includes('-h');

// Prompt user for email and password.
const prompt = (query: string, hidden = false): Promise<string> =>
  new Promise((resolve, reject) => {
    const rl = readline.createInterface({
      input: process.stdin,
      output: process.stdout,
    });
    try {
      if (hidden) {
        const stdin = process.openStdin();
        process.stdin.on('data', (char: string) => {
          char = char + '';
          switch (char) {
            case '\n':
            case '\r':
            case '\u0004':
              stdin.pause();
              break;
            default:
              process.stdout.clearLine(0);
              readline.cursorTo(process.stdout, 0);
              process.stdout.write(query + Array(rl.line.length + 1).join('*'));
              break;
          }
        });
      }
      rl.question(query, (value) => {
        resolve(value);
        rl.close();
      });
    } catch (err) {
      reject(err);
    }
  });

// Launch puppeteer browser.
puppeteer.launch({ headless: headless }).then(async (browser: any) => {
  console.log('Opening chromium browser...');
  const page = await browser.newPage();
  const pages = await browser.pages();
  // Close the new tab that chromium always opens first.
  pages[0].close();
  await page.goto('https://accounts.google.com/signin/v2/identifier', { waitUntil: 'networkidle2' });
  if (headless) {
    // Only needed if sign in requires you to click 'sign in with google' button.
    // await page.waitForSelector('button[data-test="google-button-login"]');
    // await page.waitFor(1000);
    // await page.click('button[data-test="google-button-login"]');

    // Wait for email input.
    await page.waitForSelector('#identifierId');
    let badInput = true;
  
    // Keep trying email until user inputs email correctly.
    // This will error due to captcha if too many incorrect inputs.
    while (badInput) {
      const email = await prompt('Email or phone: ');
      await page.type('#identifierId', email);
      await page.waitFor(1000);
      await page.keyboard.press('Enter');
      await page.waitFor(1000);
      badInput = await page.evaluate(() => document.querySelector('#identifierId[aria-invalid="true"]') !== null);
      if (badInput) {
        console.log('Incorrect email or phone. Please try again.');
        await page.click('#identifierId', { clickCount: 3 });
      }
    }
    const password = await prompt('Enter your password: ', true);
    console.log('Finishing up...');
    // Wait for password input
    await page.type('input[type="password"]', password);
    await page.waitFor(1000);
    await page.keyboard.press('Enter');
    // For headless mode, 2FA needs to be handled here.
    // Login via gmail app works autmatically.
  }
});

package.json

{
  "displayName": "Puppeteer Google Login",
  "name": "puppeteer-google-login",
  "version": "1.0.0",
  "description": "Login to your google account using puppeteer",
  "main": "dist/login.js",
  "scripts": {
    "clean": "rimraf ./dist ./coverage",
    "build": "rimraf ./dist ./coverage && tsc"
  },
  "engines": {
    "node": ">=10"
  },
  "files": [
    "dist/**/*"
  ],
  "dependencies": {
  },
  "devDependencies": {
    "@types/node": "14.0.11",
    "@types/puppeteer": "^3.0.0",
    "puppeteer": "^3.3.0",
    "puppeteer-extra": "^3.1.9",
    "puppeteer-extra-plugin-stealth": "^2.4.5",
    "rimraf": "^3.0.2",
    "typescript": "^3.8.3"
  }
}

tsconfig.json

{
  "compilerOptions": {
    "target": "ES2018",
    "module": "commonjs",
    "lib": [
      "ES2015",
      "ES2016",
      "ES2017",
      "ES2018",
      "dom"
    ],
    "sourceMap": true,
    "rootDir": "src",
    "outDir": "dist",
    "allowJs": true,
    "strict": true,
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": [
    "src"
  ]
}

How to run the script?

Hi ! This part is not very logical:

let badInput = true;
  
    // Keep trying email until user inputs email correctly.
    // This will error due to captcha if too many incorrect inputs.
    while (badInput) {
      const email = await prompt('Email or phone: ');
      await page.type('#identifierId', email);
      await page.waitFor(1000);
      await page.keyboard.press('Enter');
      await page.waitFor(1000);
      badInput = await page.evaluate(() => document.querySelector('#identifierId[aria-invalid="true"]') !== null);
      if (badInput) {
        console.log('Incorrect email or phone. Please try again.');
        await page.click('#identifierId', { clickCount: 3 });
      }
    }

It would make more sense to do :

let badInput = false;
     do{
      const email = await prompt('Email or phone: ');
      await page.type('#identifierId', email);
      await page.waitFor(1000);
      await page.keyboard.press('Enter');
      await page.waitFor(1000);
      badInput = await page.evaluate(() => document.querySelector('#identifierId[aria-invalid="true"]') !== null);
      if (badInput) {
        console.log('Incorrect email or phone. Please try again.');
        await page.click('#identifierId', { clickCount: 3 });
      }
    }while(badInput) 

the do {} while() execute the code THEN check the loop condition, in your case you want to execute your code once and then check if you have to continue or loop

I agree. I’ve made many updates to this code in its parent project, and then found a way to not need it at all. 😀 The code is probably outdated.

I agree. I’ve made many updates to this code in its parent project, and then found a way to not need it at all. 😀 The code is probably outdated.

You're welcome! I didn't pay attention to the date of the project... I found it while searching on puppeteer ^^

I agree. I’ve made many updates to this code in its parent project, and then found a way to not need it at all. 😀 The code is probably outdated.

What parent project?

https://github.com/Brandawg93/homebridge-nest-cam