TypeScript 7 Beta e tsgo: o compilador rapido precisa de validacao
A velocidade pode ajudar CI e editor, mas TypeScript tambem sustenta declaracoes, JSDoc, modo watch e ferramentas internas. A migracao precisa ser observavel.
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 traz um compilador nativo em Go. Times devem validar tsgo ao lado de tsc antes de trocar o padrao. This is especially relevant for large TypeScript codebases, monorepos, and teams where type-checking latency affects pull-request flow and editor responsiveness.
Checklist pratica
Medir tsc, rodar tsgo sem bloquear, comparar diagnosticos e .d.ts, testar a extensao do VS Code em um grupo pequeno e manter dependencias da API no 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.