@bext-stack/tsc-rs

tsc-rs is a TypeScript compiler in Rust. It implements the parts of tsc needed by bext's PRISM dispatcher (parse, typecheck, JSX → JS emit, source maps), plus a long-running stdin/stdout pipe API used for per-module transforms during PRISM compile.

This package ships prebuilt binaries for major platforms via per-platform optionalDependencies. npm/pnpm/yarn install only the one matching your host's process.platform/process.arch.

Install

npm install @bext-stack/tsc-rs

Use as a CLI

npx tsc-rs --target es2022 --outDir dist src/index.ts

Use programmatically

import { resolveBinaryPath } from "@bext-stack/tsc-rs/lib/resolve.mjs";
import { spawn } from "node:child_process";

const tscrs = resolveBinaryPath();
const child = spawn(tscrs, ["--noEmit", "src/index.ts"], { stdio: "inherit" });

bext-server's find_tscrs_binary() walks up from CWD looking for ./node_modules/.bin/tsc-rs first — installing this package makes the binary discoverable without the TSCRS_PATH env var or hardcoded $HOME/ts-rs/target/release/tsc-rs paths.

Override

If you have a locally-built binary you want to use instead, set TSCRS_PATH to its absolute path. Both the npm shim (bin/tsc-rs.mjs) and bext-server's Rust resolver respect it.

Supported platforms

| platform | arch | package | |---|---|---| | linux | x64 | @bext-stack/tsc-rs-linux-x64 | | linux | arm64 | @bext-stack/tsc-rs-linux-arm64 (planned) | | darwin | x64 | @bext-stack/tsc-rs-darwin-x64 (planned) | | darwin | arm64 | @bext-stack/tsc-rs-darwin-arm64 (planned) | | win32 | x64 | @bext-stack/tsc-rs-win32-x64 (planned) |

Other platforms throw a clear error with a TSCRS_PATH workaround. The optionalDependencies list reserves the package names so the cross-platform publish flow can drop a binary at the same name.

License

MIT