TypeScript = JavaScript + static types. Better IDE, fewer runtime errors, better refactoring.
TypeScript Advantages¶
- Static types → fewer runtime errors
- Better IDE support (autocomplete, refactoring)
- Interfaces and generics
- Gradual adoption (strict mode)
- De facto standard for new projects
JavaScript Advantages¶
- No compilation
- Faster start (prototypes)
- Simpler for small scripts
- JSDoc as a lighter type alternative
- Deno and Bun support natively
When to Use Which¶
- TypeScript — any project > 1000 lines, team > 1 person
- JavaScript — quick scripts, prototypes, small tools
TypeScript for Everything¶
TypeScript is the standard. JavaScript only for quick experiments.
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