Files
ruff/playground/package.json
Micha Reiser c027979851 Red Knot Playground (#12681)
## Summary

This PR adds a playground for Red Knot

[Screencast from 2024-08-14
10-33-54.webm](https://github.com/user-attachments/assets/ae81d85f-74a3-4ba6-bb61-4a871b622f05)

Sharing does work 😆 I just forgot to start wrangler. 


It supports:

* Multiple files
* Showing the AST
* Showing the tokens
* Sharing
* Persistence to local storage

Future extensions:

* Configuration support: The `pyproject.toml` would *just* be another
file.
* Showing type information on hover

## Blockers

~~Salsa uses `catch_unwind` to break cycles, which Red Knot uses
extensively when inferring types in the standard library.
However, WASM (at least `wasm32-unknown-unknown`) doesn't support
`catch_unwind` today, so the playground always crashes when the type
inference encounters a cycle.~~

~~I created a discussion in the [salsa
zulip](https://salsa.zulipchat.com/#narrow/stream/333573-salsa-3.2E0/topic/WASM.20support)
to see if it would be possible to **not** use catch unwind to break
cycles.~~

~~[Rust tracking issue for WASM catch unwind
support](https://github.com/rust-lang/rust/issues/118168)~~

~~I tried to build the WASM with the nightly compiler option but ran
into problems because wasm-bindgen doesn't support WASM-exceptions. We
could try to write the binding code by hand.~~

~~Another alternative is to use `wasm32-unknown-emscripten` but it's
rather painful to build~~
2025-03-18 17:17:11 +01:00

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JSON

{
"name": "playground",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"check": "npm run dev:wasm && npm run lint && npm run tsc",
"dev:wasm": "npm run dev:wasm --workspace knot-playground && npm run dev:wasm --workspace ruff-playground",
"dev:build": "npm run dev:build --workspace knot-playground && npm run dev:build --workspace ruff-playground",
"fmt": "prettier --cache -w .",
"fmt:check": "prettier --cache --check .",
"lint": "eslint --cache --ext .ts,.tsx ruff/src knot/src",
"tsc": "tsc"
},
"workspaces": [
"knot",
"ruff",
"shared"
],
"prettier": {
"trailingComma": "all"
},
"devDependencies": {
"@eslint/js": "^9.21.0",
"@tailwindcss/vite": "^4.0.14",
"@types/react": "^19.0.11",
"@types/react-dom": "^19.0.0",
"@vitejs/plugin-react-swc": "^3.0.0",
"eslint": "^9.22.0",
"eslint-plugin-import": "^2.31.0",
"eslint-plugin-react": "^7.31.11",
"eslint-plugin-react-hooks": "^5.2.0",
"prettier": "^3.5.3",
"tailwindcss": "^4.0.14",
"typescript": "^5.8.2",
"typescript-eslint": "^8.26.1",
"vite": "^6.2.2",
"wasm-pack": "^0.13.1"
}
}