feat(plugin-stealth): Add new user-agent-language-platform plugin

[Niek]

This plugin basically replaces the following evasions:
https://github.com/berstend/puppeteer-extra/tree/master/packages/puppeteer-extra-plugin-stealth/evasions/accept-language
https://github.com/berstend/puppeteer-extra/tree/master/packages/puppeteer-extra-plugin-stealth/evasions/navigator.languages
At the same time, it fixes #91

Instead of changing request headers and the navigator.languages (navigator.language was missing by the way) properties as in the evasions above, we use call setUserAgentOverride in the CDP Network domain directly which is a better way of achieving this.

In addition, this evasion allows setting the navigator.platform and navigator.vendor properties, which makes it a lot less easy to detect puppeteer.

[berstend]

@Niek Interesting, thanks a lot for this PR!

I wasn't aware that you could modify the Accept-Language request header using Network.setUserAgentOverride.

Would you mind adding a test file that does before/after tests with this plugin?
You could use e.g. this file as the basis: https://github.com/berstend/puppeteer-extra/blob/master/packages/puppeteer-extra-plugin-stealth/evasions/accept-language/index.test.js

I would do it myself but there's no good way in Github (that I'm aware of) to push commits to this PR (without a new PR and you losing the "Contributor" status). :)

Is there a specific reason to add navigator.vendor here as well, as opposed to making a specific plugin for it? I personally lean towards making the evasions as modular as possible and splitting them up if it makes sense.

The rest (userAgent, acceptLanguage, platform) is set by a single Network.setUserAgentOverride call, so it make sense to group it into a single plugin.

Thanks again!

[berstend]

#91 is still something I need to look into (so end users can use the adblocker plugin while still being able to do their own request interception), but if this PR fixes the accept-language evasion then this would make fixing #91 less critical in my opinion.

[berstend]

Once you add a test file you can specifically run it like so (from the root of the puppeteer-extra-plugin-stealth folder):

yarn ava -v ./evasions/webgl.vendor/index.test.js

[Niek]

@berstend Thank you for the amazing repo! I will add the tests ASAP to the PR.

I have removed the navigator.vendor part, I agree that would probably be better in a separate plugin.

[Niek]

I added the tests, let me know if you need other changes @berstend

[berstend]

@Niek awesome, thanks a lot! Will look at the PRs asap. :)

[berstend]

@Niek thanks again and apologies for the delay (I'd like to blame the holidays) 😄

I've removed the user-agent, accept-language evasions which are made obsolete by this one and renamed it user-agent-override (to keep it more concise).

Will merge in some other fixes & PRs and do a release afterwards. :)

Thanks! 👍

[berstend]

Released in puppeteer-extra-plugin-stealth@2.4.7. :) Thanks again!

[Niek]

Awesome, thanks for the great work!

[pastuh]

What if i want to randomize User Agent?
Can i somehow turn off user-agent-override but still use StealthPlugin ?

Use separate plugins or there exists skip function?
Edit: Used separate override.. looks like works