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Multiplayer code editor inspired by Khan Academy's Embedded Editor, built using Svelte and TypeScript.

Code Together was intended to be used by teachers and peer tutors. Originally created for fully-online classes, I've found Code Together can be used in the classroom, too.

There are two versions of Code Together:

1. A user-friendly page with an examples section, and access to copy the invite link. This page will generate your room ID for you.
   https://code.xacer.dev/
2. A minimalist version for specialized classes. Teachers need to pick an ID for their room.
   https://code.xacer.dev/room?id=<your-id-here>

The main priority of Code Together is safety. All operations happen in a sandboxed iframe element.

To avoid infinite loops crashing the page, Code Together runs user code in a separate thread via Web Workers. This means it avoids the code injection techniques that Khan Academy uses to prevent infinite loops.

The editor supports most of the same Processing.js library that Khan Academy uses. Specifically, I use a modified version of ski.js that can be found under /static/_worker.js.

1. Loading and saving from Khan Academy. The vision is for two Khan Academy users to be able to work simultaneously on a project by loading it into Code Together, editing the code, then saving it back to a Khan Academy project.
2. Quality of life features such as number scrubbing and color pickers. I'm working on number scrubbing in the number-scrubber branch.
3. Helpful error messages. It would be awesome to somehow incorporate Large Language Models to get personalized feedback; in the meantime, I may end up creating a better version of Error Buddy (from Khan Academy's editor).

Thanks to DesignEvo for the free logo creator.