TypeScript Deep Dive
Free Intermediate course · 10 lessons · 3 weeks · Certificate on completion
Stop fighting types. Master generics, narrowing, and the patterns that make large codebases maintainable. Across 10 lessons you'll move from fundamentals to a portfolio-ready outcome — at your own pace, with quizzes after each lesson and a final exam to certify your mastery.
What you'll learn
- Why TypeScript, really
- Primitives and inference
- Unions, intersections, narrowing
- Generics that don't hurt
- Utility types
- Type-safe APIs
Skills you'll pick up
- Why TypeScript, really
- Primitives and inference
- Unions, intersections, narrowi
- Generics that don't hurt
- Utility types
- Type-safe APIs
Tools covered
- TypeScript
- Real-world projects
- Quizzes
- Final exam
Course modules
Module 1: Why TypeScript, really
Module 1 of TypeScript Deep Dive. 3 lessons · 3h
Module 2: Primitives and inference
Module 2 of TypeScript Deep Dive. 3 lessons · 3h
Module 3: Unions, intersections, narrowing
Module 3 of TypeScript Deep Dive. 3 lessons · 3h
Module 4: Generics that don't hurt
Module 4 of TypeScript Deep Dive. 1 lessons · 1h
Lessons in this course
- Why TypeScript, really
- Primitives and inference
- Unions, intersections, narrowing
- Generics that don't hurt
- Utility types
- Type-safe APIs
- Module system
- Migrating a JS codebase
- TypeScript: Deep dive 9
- TypeScript: Deep dive 10
Instructor
Sebastian Mueller — Staff Engineer
Sebastian Mueller is a Staff Engineer with years of hands-on experience teaching TypeScript to thousands of learners worldwide.
Certificate
Finish every lesson and pass the final exam to earn a free, verifiable Learnera certificate for TypeScript Deep Dive. It can be downloaded as a PDF and shared on LinkedIn.
Career outcomes
Median global salary $110,000 per year · median India salary ₹15,00,000 per year · 233,590 open roles worldwide
- TypeScript Specialist
- Senior TypeScript Lead
- TypeScript Consultant
Frequently asked questions
Is the TypeScript Deep Dive course free?
Yes. Every Learnera course, including TypeScript Deep Dive, is completely free — lessons, quizzes, the final exam, and the certificate.
How long does TypeScript Deep Dive take?
10 lessons, typically completed in 3 weeks at a comfortable pace.
Do I get a certificate?
Yes — pass the final exam and you receive a free, verifiable certificate you can share on LinkedIn.