TypeScript 7 in WebStorm: Faster Coding Assistance for Angular and React, No Migration Required

TypeScript 7 is a real game-changer, and its new Go-based language engine fundamentally alters how IDEs integrate with TypeScript. And what’s more, WebStorm 2026.2 ships stable support for it, including for Angular and React projects.

No migration is required – if your team is locked on an older TypeScript version for infrastructure reasons, your project constraints stay exactly where they are. What changes is the speed and quality of coding assistance you get in WebStorm.

This post walks through what TypeScript 7 support means in practice for Angular and React users.

Under the hood: Why the Go-based engine changes things

TypeScript 7 replaces the Node.js-based language service with a new engine written in Go. The result is a faster compiler that does less work to deliver the same or better coding assistance.

For WebStorm, this meant rethinking how the IDE integrates with TypeScript at the language-service level. Rather than relying on the existing plugin layer, we built native support for the Go-based engine, so it can power coding assistance directly. The difference is most apparent in larger codebases, where the old engine’s overhead was most visible.

Angular: Full TypeScript 7 support before anyone else

TypeScript 7 support for Angular projects is fully stable in WebStorm 2026.2.2. You can switch to the Go-based engine in WebStorm in your preferences with no changes to your project required.

According to official Microsoft publications, the new compiler is up to 10x faster than its Node.js-based predecessor. We ran TypeScript 7 on the Kibana codebase and saw project load times drop from around 12 seconds to 3 seconds. Kibana is one of the largest open-source TypeScript codebases out there, so that’s a meaningful result and a good proxy for what large Angular monorepos can expect.

You can choose TypeScript 7.0 for coding assistance in the WebStorm preferences for your Angular project to benefit from the improved performance.

You may wonder how that is possible when neither the Angular compiler nor VS Code’s coding assistance supports TypeScript 7.0. WebStorm ships with its own Angular template transpiler ported from the Angular compiler to Kotlin, which gives us a lot of flexibility. For Node.js-based TypeScript, we have developed a Volar plugin to support source mapping in the TypeScript compiler. For Go-based TypeScript, we have implemented a similar solution by porting parts of Volar to Koltin and adapting it to our infrastructure.

The general idea is that there is a layer that collects transpiled code and mappings, and translates IDE requests from coordinates in the original source code to the generated code. The TypeScript compiler, on the other hand, sees only the generated code and receives requests with translated coordinates. This solution allows us to transpile TypeScript files and provide code assistance in inline Angular templates. The TypeScript-Go content-mappers feature is currently limited to non-TypeScript files, and it appears it will not support Angular use cases.

We’re looking forward to seeing how the Angular compiler will be redesigned for TypeScript 7.0. But even now, you can already enjoy better performance in your Angular projects with WebStorm!

React and Vue updates

Already using TypeScript 7 in your React project? WebStorm has you covered. The Go-based engine powers coding assistance out of the box. Update WebStorm, select TypeScript 7 in your preferences, and you’re good to go.

We are also working on porting the Vue transpiler to Kotlin and Kolar (coming soon), and we are actively working to find the best solution to support Vue with TypeScript 7. All we need to do is evaluate whether it will be done through the official content-mappers solution or using our Kotlin transpiler and Kolar.

What’s next

For React, TypeScript 7 support is stable and ready to use today. For Angular, we’re continuing to refine the integration and watching how the Angular compiler evolves to natively support TypeScript 7. If you run into anything unexpected in your projects, we’d love to hear from you. Feedback from real codebases shapes what comes next! Download WebStorm 2026.2.2