Lesson 1537 of 2116
Migrating a JS codebase to TypeScript strict with Claude
Phase a strict-mode TypeScript migration with Claude proposing types one module at a time.
Lesson map
What this lesson covers
Learning path
The main moves in order
- 1The premise
- 2TypeScript migration
- 3strict mode
- 4incremental adoption
Concept cluster
Terms to connect while reading
Section 1
The premise
Strict-mode migrations stall when teams try a big-bang. Claude makes the per-file work tractable.
What AI does well here
- Infer parameter and return types from usage
- Suggest a per-file enable order by blast radius
What AI cannot do
- Reason about your runtime invariants the types ignore
- Decide when 'any' is the honest answer
Key terms in this lesson
End-of-lesson quiz
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