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TypeScript Academy · Lesson

Type-Checking in CI: Strategies and Tools

Run type checks efficiently in continuous integration pipelines.

Why Type-Check in CI?

Running TypeScript type checks in CI catches type errors that developers miss locally, especially in large teams where changes in one package break another.

# Simple CI type check step
npx tsc --noEmit

--noEmit Flag

tsc --noEmit runs the full type checker but skips JavaScript output — perfect for CI type checking without generating files.

# GitHub Actions step
- name: Type Check
  run: npx tsc --noEmit

All lessons in this course

  1. Profiling Slow TypeScript Compilation
  2. Avoiding Expensive Type Operations
  3. skipLibCheck and Isolated Declarations
  4. Type-Checking in CI: Strategies and Tools
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