Playground

[danilopedraza]

I need to make a playground, so it is easy to try the language.

I looked at the code of Dart, Go and Rust playgrounds, and all of them run with a backend where all the code runs.

[danilopedraza]

I found a nice exception: Io. It has a REPL compiled in WASM.

[danilopedraza]

I'm going with the plan of compiling to WASM. However, this needs some preparation work.

• [x] Split core into smaller crates
• [x] Create builtins that interact with the browser instead of system calls

This will allow me to only compile to WASM what I need, and to interact with the browser in a non-hacky way.

[danilopedraza]

Splitting was not necessary. I used wasm-pack to generate the necessary wasm and it compiled only what was necessary.

[danilopedraza]

I'm using wasm-bindgen to generate all the glue code. Overall, this looks good.

[danilopedraza]

The playground now (barely) works. I need to work in the interface, ergonomics and error reporting (crashes, overflow)