Announcing TypeScript 7.0

July 8th, 2026 33 reactions Announcing TypeScript 7.0 Daniel Rosenwasser Principal Product Manager Table of contents Today we are proud to announce the availability of TypeScript 7, a 10x faster native port of TypeScript! Since its early days, TypeScript has promised to deliver on JavaScript that scales. By bringing strong type- checking and rich tooling to the world of JavaScript, TypeScript made it possible to build non-trivial high- quality apps across platforms. Last year, our team unveiled TypeScrip's next step in scaling: making every part of the toolset an order of magnitude faster. The mission was a native port of TypeScript built in Go that could make the most of modern hardware. This port was done as faithfully as possible, writing new code while maintaining the Try comparing on a few open-source projects yourself. Here are the build times of running TypeScript 6 and 7 on some fairly open source codebases. Codebase TypeScript 6 TypeScript 7 Speedup vscode 125.7s 10.6s 11.9x sentry 139.8s 15.7s 8.9x bluesky 24.3s 2.8s 8.7x playwright 12.8s 1.47s 8.7x tldraw 11.2s 1.46s 7.7x Compile Times Between TypeScript 6 & 7 TypeScript 7 also typically does better while asking for less aggregate memory over the span of a build. Codebase TypeScript 6 TypeScript 7 Memory Delta vscode 5.2GB 4.2GB -18% sentry 4.9GB 4.6GB -6% bluesky 1.8GB 1.3GB -26% playwright 1.0GB 0.9GB -11% tldraw 0.6GB 0.5GB -15% Aggregate Memory Usage in TypeScript 6 & 7 Of course, there's more to the experience than the full build. On the same computer, opening a file with Extension: TypeScript 7 TS TypeScript 7 Microsoft 461,177 Install Auto Update DETAILS FEATURES TypeScript 7 This extension provides the native implementation of the TypeScript language service. It provides features like go-to-definition, completions, errors and diagnostics, quick info/tooltip hovers, and more. Usage 1. Install the extension from the marketplace. 2. Open a TypeScript or JavaScript file (.ts) in your editor. 3. Activate the extension with the command aka.ms/ TypeScript7