TypeScript 7 launches as native Go-based compiler with up to 12x faster builds

TypeScript 7 is a native Go port of the compiler delivering 8x to 12x speedups on full builds across large codebases like vscode, sentry, and bluesky
The rewrite also reduces memory usage by 6% to 26% while cutting editor startup and first-error detection time from about 17.5 seconds to under 1.3 seconds
TypeScript 7 ships via the normal npm install flow and gains editor support through a new LSP-based VS Code extension and automatic Visual Studio integration
Microsoft says the release was validated over the past year with internal teams like Loop, Office, PowerBI, Teams, and Xbox plus external companies including the VS Code team
HN discussion largely centers on the Go vs Rust language choice, debates over TypeScript's type system sophistication, and a broader argument about whether static typing is genuinely valuable for JavaScript

TypeScript 7 is a native Go port of the compiler delivering 8x to 12x speedups on full builds across large codebases like vscode, sentry, and bluesky
The rewrite also reduces memory usage by 6% to 26% while cutting editor startup and first-error detection time from about 17.5 seconds to under 1.3 seconds
TypeScript 7 ships via the normal npm install flow and gains editor support through a new LSP-based VS Code extension and automatic Visual Studio integration
Microsoft says the release was validated over the past year with internal teams like Loop, Office, PowerBI, Teams, and Xbox plus external companies including the VS Code team
HN discussion largely centers on the Go vs Rust language choice, debates over TypeScript's type system sophistication, and a broader argument about whether static typing is genuinely valuable for JavaScript