TypeScript Migration

Authoritative migration guide for TypeScript 5.x → 6 → 7 (native Go port). Sourced from Microsoft's official announcements.

Status

• Skill Status: Production Ready
• Last Updated: 2026-07-09
• TS 6.0 Released: 2026-03-17 (Final) — last JavaScript-based release
• TS 7.0 Released: 2026-07-08 — native Go port ("Corsa"), stable
• Authoritative Sources:
  • TS 7.0 release: https://devblogs.microsoft.com/typescript/announcing-typescript-7-0/
  • TS 6.0 beta: https://devblogs.microsoft.com/typescript/announcing-typescript-6-0-beta/
  • TS 6 → 7 diff tracker: https://github.com/microsoft/typescript-go/blob/main/CHANGES.md
  • ts5to6 tool: https://github.com/andrewbranch/ts5to6

The Golden Rule