Welcome to The Super Tiny Interpreter. It's an ultra simplified example of all the major pieces of a modern interpreter written in easy to read JavaScript. Reading through it can help you learn about how most interpreters work end to end.

That's fair, most people don't really have to think about interpreters in their day jobs. However, interpreters are all around you, tons of the tools you use are based on concepts borrowed from interpreters.

Yes, they are. But that's our fault (the people who write interpreters), we've taken something that is reasonably straightforward and made it so scary that most think of it as this totally unapproachable thing that only the nerdiest of the nerds are able to understand.

Awesome! Head on over to the super-tiny-interpreter.js file.

Ouch, I'm really sorry. I'm planning on doing a lot more work on this to add inline annotations. If you want to come back when that's done, you can watch/star this repo for updates.

Run with node test.js