@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). otfwcPath() decompresses only the host's binary lazily on first use, so installation has no Node lifecycle hook, and returns the path matching the host.

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.