JavaScript
TypeScript for JavaScript Developers: a friendly ramp-up
Add TypeScript to JS codebases with confidence. Learn gradual typing, value objects, type-safe APIs, and editor tricks that save time.
Start with surfaces
Type your public APIs first: function inputs/outputs and props. Internal details can stay implicit until they stabilize.
Make types readable
Prefer named types over nested inline types. Keep generics small and document the intent with JSDoc when helpful.
Tooling setup that helps
Enable strict mode, use path aliases carefully, and wire ESLint to catch any/unknown leaks early.
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