TypeScript

tsconfig essentials

type vs interface

narrowing and guards

enums vs unions overview

typing functions correctly

Generic functions and constraints

Utility types (Partial/Pick/Omit)

Mapped types overview

Conditional types overview

Infer keyword overview

DTO modeling

Validation types alignment

Error types and discriminated unions

Shared types in monorepo overview

Runtime validation overview (zod)

Readonly and immutability

Branded types overview

Typing events and callbacks

Typing React/Vue patterns (overview)

Avoiding “any” strategy

Incremental migration plan

Strictness escalation strategy

Fixing common TS errors

Typing legacy libs overview

Build + typecheck in CI