#compiler

Microsoft announced TypeScript 7.0, featuring a major compiler rewrite that delivers up to 12x faster build times across large codebases like VS Code, Sentry, and Playwright. This release dramatically reduces compilation time for TypeScript projects, which is critical for developer productivity in large-scale JavaScript/TypeScript applications. It also signals a new era of compiler performance for the ecosystem. Based on benchmarks, TypeScript 7.0 achieved 11.9x speedup on the VS Code codebase (from 125.7s to 10.6s), 8.9x on Sentry, and 8.7x on Playwright. The release also includes new language features, though details were not specified in the brief.