TypeScript 7 released with Go-based compiler, 8-17x faster builds

Short summary

TypeScript 7 has been released with its compiler rewritten in Go, delivering 8-17x faster compile times and reduced memory usage across major codebases like VS Code, Sentry, and Playwright. New features include parallel parsing and type-checking with configurable --checkers and --builders flags, a --singleThreaded mode for debugging, and an improved --watch mode using a Go-based file watcher. The speedup benefits VS Code and editors like Cursor built on top of it.

• •TypeScript 7 compiler rewritten in Go delivers 8-17x compile speedup
• •New parallel --checkers and --builders flags allow fine-tuning performance vs memory
• •VS Code error detection drops from ~17.5s to <1.3s

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