Free
Course

Learn TypeScript: Type Narrowing

Gain insights into the runtime behavior of the TypeScript code by narrowing down union types.

This course includes
This course includes

  • Skill level

    Beginner

  • Time to complete

    Average based on combined completion rates — individual pacing in lessons, projects, and quizzes may vary
     
    1 hour

  • Projects

    1

  • Prerequisites

    None

About this course

Continue your TypeScript learning journey with Learn TypeScript: Type Narrowing. Leverage TypeScript’s type system to gain insights into the runtime behavior of your code by narrowing down what types unions may actually be.

Syllabus

The platform

Hands-on learning

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Explore features

Projects in this course

Meet the creator of the course
Meet the full team
Kenny Lin
Web Development Domain Manager at Codecademy
Kenny is the Domain Manager for the Web Development Domain at Codecademy. He contributed to a wide range of courses and paths at Codecademy, including JavaScript, Bootstrap, Handlebars, Phaser.js, Go, Swift, TypeScript, and Lua.
Meet the full team

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Reviews from learners

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    Chris
    Codecademy Learner @ USA
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    Codecademy Learner @ UK
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    John-Andrew
    Codecademy Learner @ USA

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Join over 50 million learners and start Learn TypeScript: Type Narrowing today!

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  • Practice Projects

    Guided projects that help you solidify the skills and concepts you're learning.

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    Auto-graded quizzes and immediate feedback help you reinforce your skills as you learn.

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