Splash doesn't render React single-page application

[Azaze1l]

Hey!

I'm trying to render this https://app.adapty.io/login page but facing some strange behavior. I'm getting a blank white page as a response:

My lua function:

function main(splash, args)
  splash.private_mode_enabled = false
  splash:set_viewport_full()
  splash:set_user_agent('Mozilla/5.0 (Windows NT 6.1; rv:51.0) Gecko/20100101 Firefox/51.0')
  assert(splash:go(args.url))
  assert(splash:wait(60))
  return {
    html = splash:html(),
    png = splash:png(),
    har = splash:har(),
  }
end

After doing some research I've found some interesting related to my problem reports:
React website showing a blank white page and no content

Scrapy-splash not rendering dynamic content from a certain react-driven site

But there is still no context here.

Should I keep trying to use Splash as a rendering service or it can be a better option to use something different?
Does anyone have a guess why this happens with React apps?

[SardarDelha]

Splash cannot render single page applications.
In fact, Splash only receives the view source and does not understand the html that is created by JavaScript.
We used to use Splash before, but because it is no longer updated and also does not support SPA, we use playwright. Playwright is both simple and can be used in Python.

[Azaze1l]

@SardarDelha thank you a lot for the alternative solution!