TypeScript 7.0: in GoLang

 Announcing TypeScript 7.0 - TypeScript

a 10x faster native port of TypeScript!

While TypeScript 7.0 is here, it does not ship with an API. We expect TypeScript 7.1 to ship with a new (and different) API, but until then we have made it a priority to ensure TypeScript can be run side-by-side with TypeScript 6.0 for utilities that still need some programmatic access to the compiler (such as typescript-eslint).

TypeScript 7 Is Here (And It's 10× Faster) - YouTube

TypeScript technical fellow, creator of TypeScript, Anders Hejlsberg introduces TypeScript 7, the native code (Go) port of the compiler and tooling that runs roughly 10x faster than TypeScript 6.

TypeScript 7 introduces a ground-up rewrite of the TypeScript compiler and tooling in native code (Go), replacing the legacy JavaScript-based compiler to deliver roughly 10× faster compilation performance than TypeScript 6.

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Key Takeaways & Features

• Native Go Port: Moving from a JavaScript runtime to native code eliminates single-thread limitations and V8 engine overhead.

• Shared-Memory Concurrency: The compiler now utilizes multi-threading across all available CPU cores, providing speedups ranging from 8× to 12× on full builds.

• Real-World Benchmark: A live demonstration showed compiling the 2.3 million line VS Code codebase dropping from ~50 seconds down to under 5 seconds.

• New LSP Language Server: Near-instant editor startup, instantaneous error squiggles, and rapid symbol/reference lookups.

• 99.99% Backward Compatibility: Designed as a drop-in replacement compatible with existing TypeScript 6 codebases and configurations.