Go-based TypeScript port (tsgo) available now via npm with shared-memory parallelism; type-checks Sentry codebase in 6.7s vs 72.8s on tsc.
June 5, 2026
Summary
Cutting type-check time from minutes to seconds directly impacts dev loop speed and CI/CD latency. JSX and JS/JSDoc support now work, making real projects testable.
Why it matters
Cutting type-check time from minutes to seconds directly impacts dev loop speed and CI/CD latency. JSX and JS/JSDoc support now work, making real projects testable.
Implementation verdict
Replaces tsc for type-checking only—missing --build, --declaration emit, and editor features (auto-imports, find-all-references, rename). Install via npm and opt-in per project; ready for experimentation on non-critical paths but not production CI yet. Nightly updates planned.
Sources
Dev Signal
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