microsoft / microsoft/TypeScript
Publish an official wasip1 (WASI) build artifact of tsgo
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Depuis le 15/7/2026.
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Description
Request
Please consider publishing an official GOOS=wasip1 GOARCH=wasm build artifact of tsgo alongside the native platform binaries (npm @typescript/* platform packages / GitHub release assets).
Context
We embed JavaScript tooling in WebAssembly (WASI) environments and evaluated running the TypeScript 7 compiler there. Building from source works today with no patches:
GOOS=wasip1 GOARCH=wasm go build ./cmd/tsgo # at tag typescript/v7.0.2, go1.26.4
- One command, ~40s build, ~48.6 MB core module.
- Runs under wasmtime (preview1): diagnostics are byte-identical to the native binary on our test projects, exit codes preserved.
- Single-threaded as expected for this target (~12× native wall-clock in our samples — still practical for small/medium projects).
- Known limitation we observed: wasm32's 4 GiB memory ceiling prices out very large programs (a
type-fest-scale check needed ~6.6 GB natively).
Why an official artifact
The build is trivially reproducible, but an official artifact would give WASI/browser-adjacent consumers a supported, versioned binary instead of each project maintaining its own build pipeline, and would make regressions on this target visible to CI here rather than downstream.
Happy to share our verification receipts (diagnostic byte-comparisons vs the native binary) if useful.
Guide de contribution
Ouvrir le guide de contribution
Par où commencer
- Lisez l'issue en entier, puis le guide de contribution du projet.
- Signalez en commentaire que vous la prenez — cela évite que deux personnes fassent le même travail.
- Forkez le dépôt et travaillez sur une branche.
- Ouvrez une pull request qui référence le numéro de l'issue.
Évaluation
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