Code not working.
Comment out code.
Slowly rewrite it bit by bit till it works again.
Check against commented code.
They're the same.
Wtf.

Seven hours wasted on this shit :/

Happened while working os project in school. Very frustrating!

Looool. I remember one day, my classmate's code wasn't working. It was the same as mine, but mine worked perfectly. No one could figure out what was wrong. Out of frustration, she exited the ide and restarted it. Her code worked perfectly fine then, no changes done

Server side rendering in node with an import that used 'window' caused this for me. One of my loops just didn't run sometimes, like totally just skipped it and continued on causing domino effect of errors. I questioned my ability to write a for loop for over a half hour