REPLS SOURCE CODE?
Ok so if you don't know already web.archive.org is a internet archive that takes snapshots of websites. So scrolling through repl I found an old not formatted version. http://web.archive.org/web/20111224131705/https://repl.it/#
Pretty cool right? Then when you click source code you get redirected to here. http://web.archive.org/web/20140603224707/https://github.com/replit/repl.it. This is repl's source code. Also if this wasn't supposed to be seen, a mod can ping me and I'll take it down. It was also cool to see replit's history.