TypeScript 7 (Project Corsa) features a complete compiler rewrite in Go, delivering up to 10x faster build times and reduced memory usage. The new native compiler, tsgo, leverages Go's performance for efficient parallel processing. Strict mode is now enabled by default, representing a breaking change that enhances type safety. The preview is available via npm. While developers celebrate the performance gains, some express concerns about migration paths for tools depending on the TypeScript compiler API. This move aligns TypeScript with other high-performance native tooling like esbuild and SWC.
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