That's the thing, the static (compiled) files are kinda like a blackbox you need to dig deep into the files to find the correct code.
I personally never touch the static files (which should be the standard practice)
I only work with the source files.
During compilation the compiler decides where a certain piece of code will go and what will be the variable name, file name etc. So with every compilation the variables, or position of the code could change.
So I cannot tell you for sure where exactly to look into the compiled react js files.