TypeScript

Types, objects, union types, generics, utility types and TS in React.

1. 1What TypeScript isTypes checked before running, annotations, inference, any vs unknown.
2. 2Objects: type and interfaceObject shapes, optional and readonly fields, Record, type vs interface.
3. 3Union types and narrowingUnions, literal types, typeof/in/instanceof, discriminated unions and never.
4. 4GenericsTypes with parameters, constraints with extends, keyof and T[K].
5. 5Utility types, as const, satisfiesPartial, Pick, Omit, Record, ReturnType and types derived from values.
6. 6TypeScript in React and NextProps, children, state, events, a typed reducer and PageProps.