Practice exercise

Skip to editor content

learningtypescript.orglesson 21 of 25lesson 21 of 25

sitesRS TS JS PHP SQL ZIG

learningtypescript.org

TypeScript · 25 lessons

19Capstone Project: Type-Safe Learning Tracker30m 20Mapped Types25m 21Advanced Patterns28m 22Testing25m 23Decorators25m 24React and TypeScript25m 25Next.js and TypeScript28m

▶Continue Learning ◑Progress ◆Capstone ▚Playground ◐Sign in — keep your progress

Advanced Patterns

20Prior lessonMapped Types21 · Advanced Patternslesson 21 of 25Up nextTesting22

Loading exercise...

learningtypescript.orgtypescript/21 · exerciselesson 21 of 25