Visual Studio 2026 18.6 Insiders 3 now ships with TypeScript 7 Beta (native preview) as the default built-in TypeScript SDK. The native port of the TypeScript compiler delivers up to 10x faster compile times and ~8x faster project load times through native execution and shared-memory parallelism. The update affects all projects using the built-in SDK, including TypeScript, JavaScript, and ASP.NET Core projects. Users can revert to the previous language service via Tools > Options > Preview Features, or pin to TypeScript 6.x or a specific native preview version via npm. Several known issues exist including missing quick fixes, incomplete Find All References, broken file rename import updates, and JSDoc auto-generation not working.
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