puppeteer-extra-plugin-stealth/evasions/navigator.plugins/index.test.js

Stealth mode: Applies various techniques to make detection of headless puppeteer harder.

const test = require('ava')

const {
  getVanillaFingerPrint,
  getStealthFingerPrint
} = require('../../test/util')
const { vanillaPuppeteer, addExtra } = require('../../test/util')

const Plugin = require('.')

test('vanilla: empty plugins, empty mimetypes', async t => {
  const { plugins, mimeTypes } = await getVanillaFingerPrint()
  t.is(plugins.length, 0)
  t.is(mimeTypes.length, 0)
})

test('vanilla: will not have modifications', async t => {
  const browser = await vanillaPuppeteer.launch({ headless: true })
  const page = await browser.newPage()

  const test1 = await page.evaluate(() => ({
    mimeTypes: Object.getOwnPropertyDescriptor(navigator, 'mimeTypes'), // Must be undefined if native
    plugins: Object.getOwnPropertyDescriptor(navigator, 'plugins') // Must be undefined if native
  }))
  t.is(test1.mimeTypes, undefined)
  t.is(test1.plugins, undefined)

  const test2 = await page.evaluate(
    () => Object.getOwnPropertyNames(navigator) // Must be an empty array if native
  )
  t.false(test2.includes('plugins'))
})

test('stealth: has plugin, has mimetypes', async t => {
  const { plugins, mimeTypes } = await getStealthFingerPrint(Plugin)
  t.is(plugins.length, 3)
  t.is(mimeTypes.length, 4)
})

test('stealth: will not leak modifications', async t => {
  const puppeteer = addExtra(vanillaPuppeteer).use(Plugin())
  const browser = await puppeteer.launch({ headless: true })
  const page = await browser.newPage()

  const test1 = await page.evaluate(() => ({
    mimeTypes: Object.getOwnPropertyDescriptor(navigator, 'mimeTypes'), // Must be undefined if native
    plugins: Object.getOwnPropertyDescriptor(navigator, 'plugins') // Must be undefined if native
  }))
  t.is(test1.mimeTypes, undefined)
  t.is(test1.plugins, undefined)

  const test2 = await page.evaluate(
    () => Object.getOwnPropertyNames(navigator) // Must be an empty array if native
  )
  t.false(test2.includes('plugins'))
})