Learn Intermediate TypeScript: Type Narrowing
Learn advanced techniques to narrow complex types in TypeScript. Discover TypeScript’s power inference through type guards and type narrowing.
Skill level
IntermediateTime to complete
Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary1 hourProjects
1Prerequisites
None
About this course
Master the art of type narrowing in TypeScript with this intermediate course. You’ll learn how TypeScript does type narrowing at runtime, create user-defined type guards, and utilize appropriate operators such as typeof and in when writing type guards. With hands-on exercises and practical examples, you’ll gain a deep understanding of type narrowing techniques and how they can help you write cleaner, more efficient code.
Skills you'll gain
Describe how TypeScript does type narrowing at runtime
Check variable types with a type guard
Utilize the
typeofandinoperators when writing type guards
Syllabus
Intermediate Type Narrowing
Learn about Intermediate Type Narrowing
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Practice Projects
Guided projects that help you solidify the skills and concepts you're learning.Assessments
Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.Certificate of Completion
Earn a document to prove you've completed a course or path that you can share with your network.