Type Inference
TypeScript can automatically infer types from values, so you don't always need explicit annotations.
Automatic Inference
When to Use Explicit Types
Use explicit types when:
- The inference isn't what you want
- For function parameters
- For better documentation
Contextual Typing
TypeScript uses context to infer types:
Object Inference
Best Practices
Exercise: Let TypeScript Infer
Remove unnecessary type annotations (keep only where needed):
Up next · Lesson 4 of 34
Primitive Types
1 min read
3 of 34 lessons done