TypeScript 7 Beta e tsgo: il compilatore veloce richiede una migrazione controllata
La velocita puo migliorare CI ed editor, ma l integrazione con JSDoc, CommonJS, watch mode, LSP e strumenti basati su compiler API va verificata.
What happened
Microsoft announced TypeScript 7.0 Beta on April 21, 2026. The beta is available as @typescript/native-preview@beta and runs through tsgo, so teams can compare it with TypeScript 6 tsc before changing their default toolchain.
Why it matters
TypeScript 7.0 Beta introduce un compilatore nativo in Go. I team dovrebbero validare tsgo accanto a tsc prima di cambiare default. This is especially relevant for large TypeScript codebases, monorepos, and teams where type-checking latency affects pull-request flow and editor responsiveness.
Checklist operativa
Misurare tsc, aggiungere tsgo in CI senza bloccare, confrontare diagnostica e .d.ts, provare VS Code Native Preview su un gruppo ridotto e mantenere le API su TS 6.
Risks
The official repository still marks the programmatic API as not ready, watch mode as prototype, and LSP work as in progress. Teams with legacy JavaScript, CommonJS, Closure-style JSDoc, or compiler-API tooling should validate those areas separately.