Official Release of TypeScript 7

Official Release of TypeScript 7

TypeScript 7 has been ported to native code with support for parallel execution, allowing it to run up to 10 times faster on many projects.

What has changed:

• Faster compilation and type checking;
• Reduced memory consumption;
• Fewer crashes in the editor;
• Faster CI;
• More responsive VS Code, Visual Studio, and other IDEs;
• Official support for LSP;
• New --watch mode based on the Go port of the watcher from Parcel;
• Automatic release of unused type checker state after idle time.

All familiar editor features remain in place: auto imports, Find All References, hover hints, inlay hints, code lenses, linked editing, semantic highlighting, import sorting, and much more. Now it works noticeably faster.

New experimental flags for parallelism:

• --checkers - controls the number of workers for type checking;
• --builders - manages parallel builds of projects.

For those still needing the TypeScript 6 API, a separate package has been introduced:

• /typescript6 - it installs alongside TypeScript 7 and provides a separate binary tsc6, without conflicts with the regular tsc.

How to install TypeScript 7:

npm install -D typescript

And run it as usual:

npx tsc

In short, TypeScript 7 is a significant step towards a faster, more stable, and enjoyable developer experience, especially on large codebases and in teams where every delay in CI and the editor is felt.