How to search string in all files firefox developer 56

Question

I can't find a way to search a string in all .js and .css files on Firefox Developer Edition 56.0b4.

I found a way, but it was before versions 52. I wonder why they removed this feature?

Thanks for help.

Answer 1

While not listed on MDN Dev Tools Search page, Firefox Developer (Quantum) 58 once again includes the ability to search ALL files. I was missing this and almost defected to Chrome, but the tool set is way less intuitive.

From the debugger panel Mac the key shortcut is CMD-SHIFT-F.