Prevent sites from detecting the use of Dev Tools

[KERR]

As per this thread:

https://www.reddit.com/r/firefox/comments/12hdx1v/mozilla_needs_to_launch_their_dev_tools_in_a/

Some sites (don't have any handy right now) detect and "sabotage" your browsing if you open dev tools. For example, they'll go into a debugger mode or become unusuable, telling you to close dev tools to continue.

The thread has some ideas about detection/prevention, tbh I'm not sure if this idea is possible but it would be useful.

[anshrajput]

yes the same happens with the HiAnime also like you can see 

https://hianime.in/watch/one-piece-100?ep=2154

but they not using any third party GitHub JS they might have very short script that is helping them to detect, is devtools open or not, hoping someone to put the short here that would be great for me