Red Knot Playground #12681
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Red Knot Playground #12681
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CodSpeed Performance ReportMerging #12681 will not alter performanceComparing Summary
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MichaReiser
commented
Aug 14, 2024
| .with_writer( | ||
| // To avoide trace events in the browser from showing their | ||
| // JS backtrace, which is very annoying, in my opinion | ||
| MakeConsoleWriter::default().map_trace_level_to(tracing::Level::TRACE), |
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Add a URl param to determine the log level: ?tracing=debug
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Hey! Any updates about this? Do we have any sort of playground for red knot at the moment? |
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No, there's no update. This is blocked on adding WASM support to salsa. See https://salsa.zulipchat.com/#narrow/stream/333573-Contributing-to-Salsa/topic/WASM.20support |
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Summary
This PR adds a playground for Red Knot
Screencast.from.2024-08-14.10-33-54.webm
Sharing does work 😆 I just forgot to start wrangler.
It supports:
Future extensions:
pyproject.tomlwould just be another file.Blockers
Salsa uses
catch_unwindto break cycles, which Red Knot uses extensively when inferring types in the standard library.However, WASM (at least
wasm32-unknown-unknown) doesn't supportcatch_unwindtoday, so the playground always crashes when the type inference encounters a cycle.I created a discussion in the salsa zulip to see if it would be possible to not use catch unwind to break cycles.
Rust tracking issue for WASM catch unwind support
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-emscriptenbut it's rather painful to build