TypeScript 7 Is Here (And It's 10× Faster)
TypeScript 7 rewrites the compiler in Go, delivering 10x faster builds
“we average about 10 times perf improvement”
Anders Hejlsberg announced TypeScript 7, a full native-code port of the TypeScript compiler and toolset to Go, achieving roughly 10x performance improvements — half from native execution, half from shared memory concurrency. The rewrite addresses longstanding out-of-memory and scalability issues that plagued the JavaScript-hosted compiler on large codebases like VS Code (1.3M lines). While not an AI-specific announcement, it directly affects the developer tooling stack used by the majority of AI application builders.