Seems to be broken with playwright 1.45+

[Rafiot]

I'll dig a bit further, but the short version is that when I pass a page to playwright_stealth using playwright 1.45, I get 20+ JS errors in the debug console and the none of the javascript on the page loads after that.

I'm guessing a few things changed in playwright and it's causing this module to barf.

I poked a bit more and it seems to be working fine again after I disabled the scripts:

• navigator_languages
• navigator_user_agent
• navigator_vendor

[i-hairston]

Yep this fix works for me on plawright 1.45.1

[shriyashfinov8]

Won't the blocking of navigator_user_agent script defeats the whole purpose of being exposed.

[Rafiot]

Afaict, not if you pass a useragent to playwright when you initialize the context: https://playwright.dev/python/docs/api/class-browser#browser-new-context-option-user-agent

[shriyashfinov8]

Can we pass useragent when launching the browser, as in have a use case to avoid using context which overloads the scraping instances and cause timeout issues

[Rafiot]

as far as I can tell, using a context is strongly recommended. But to answer your question (and after a quick look at the doc), no, it doesn't seem to be possible. But I never had the problem with contexts so this is fine for me (note that I'm just a playwright_stealth user).

[Mattwmaster58]

The lib assumes that all "All init scripts are combined", which doesn't seem to be the case anymore. But to preserve passing config options to the init scripts, you can use this workaround that works for now (naive workaround):

        class FixedConfig(StealthConfig):
            @property
            def enabled_scripts(self):
                key = "".join(random.choices(string.ascii_letters, k=10))
                for script in super().enabled_scripts:
                    if "const opts" in script:
                        yield script.replace("const opts", f"window.{key}")
                        continue
                    yield script.replace("opts", f"window.{key}")
        await stealth_async(page, FixedConfig())

[FelipeSanchezCalzada]

In my case the problem was that the added scripts are executed in other order (idk why). This works for me:

async def custom_stealth_async(page: Page, config: StealthConfig = None):
    """teaches asynchronous playwright Page to be stealthy like a ninja!"""
    real_config = config or StealthConfig()
    merged_scripts = '\n'.join(real_config.enabled_scripts)
    await page.add_init_script(merged_scripts)

Maybe you need to modify to support sync, i only use async

[Mattwmaster58]

fixed in my fork: https://github.com/Mattwmaster58/playwright_stealth

[Mattwmaster58]

just update playwright-stealth, should be fixed in latest release (development will now take place in my fork: https://github.com/Mattwmaster58/playwright_stealth)