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Journey
Phase 4

TypeScript

You'll be able to read types and use them to catch mistakes before code runs.

2 wks · 5 topics · about 5 h

Topics
  1. 14.1Why types catch bugs45 min
  2. 24.2Reading type annotations60 min
  3. 34.3Types for objects75 min
  4. 44.4Unions and optional values60 min
  5. 54.5Reading type errors60 min
Ends with
The weather page, typed
Start phase 4
Phase 3Phase 5
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Mamun Labs Learn
JourneyGlossary
esc
  • Try “map”, “flexbox” or “state”.
Log in
Start learning
  1. 14.1Why types catch bugs45 min
  2. 24.2Reading type annotations60 min
  3. 34.3Types for objects75 min
  4. 44.4Unions and optional values60 min
  5. 54.5Reading type errors60 min