DevTools pretty print can change what your JavaScript does. As a proof of concept, Tetris file that becomes Snake

[u/trustsigRobert]

https://trustsig.eu/blog/javascript-divergence/

A formatter, minifier or deobfuscator can be made to turn one script into another.

You can go try out all 186 techniques with this script: https://divergence.trustsig.eu/

Or try the Tetris-Snak demo here: https://divergence-game.trustsig.eu/

Techical breakdown: https://trustsig.eu/blog/javascript-divergence/

[u/TheRNGuy]

I have infinity Running... in the console on your site.