@opentf/web-compiler

Prebuilt binaries for otfwc, the OTF Web IR compiler (a Rust binary). You normally don't install this directly — @opentf/web-cli depends on it.

import { otfwcPath } from "@opentf/web-compiler";
const bin = otfwcPath(); // absolute path to the otfwc executable for this platform

How it works

This single package ships the otfwc binary for every supported platform, brotli-compressed, under bin/<platform>-<arch>/otfwc[.exe].br (~0.65 MB each vs ~2.3 MB raw). On install a postinstall script decompresses only the host's binary; otfwcPath() also decompresses lazily as a fallback (e.g. under --ignore-scripts) and returns the path matching the host (process.platform-process.arch).

Shipping all platforms in one package is cheaper to maintain than the per-platform optionalDependencies fan-out that rolldown/swc/esbuild use (their binaries are far larger). OTFWC_BIN overrides everything (used in this repo's own dev to point at the cargo target/ build).

Releasing (CI)

bin/ is empty in git, and the package is private: true only as a guard so the monorepo release flow doesn't ship it binary-less. It is published by its own workflow, .github/workflows/release-compiler.yml (run manually after a release): that cross-builds otfwc for each target, brotli-compresses each into bin/<platform>/, flips private off, and publishes — so the package on npm is public.