Which fundamentals should I prioritize when learning TypeScript?

30 Tem 21:00

Dude, I also got stuck on the same thing when I first switched to TS; it helps to start by understanding the difference between "type" and "interface". Begin with a simple type definition: ```ts type User = { id: number; name: string; email?: string; // optional }; interface IProduct { sku: string; price: number; } ``` Both definitions give you an object shape, but `interface` can inherit and extend, while `type` works better for unions & intersections. Got the difference? Next up, dive into **type inference** and **strict mode**. Adding `"strict": true` in `tsconfig.json` and enabling settings like `noImplicitAny` and `strictNullChecks` instantly boosts code readability; the compiler will warn you with stuff like "can't infer this variable's type," making errors super clear. After that, learn **union & intersection types** and **generics**. With unions, you can let a field accept multiple types (`string | number`), and with intersections, you can merge two types (`A & B`). Generics keep components or functions type-agnostic: ```ts function wrap<T>(value: T): { data: T } { return { data: value }; } ``` At this point, add **enums**, **literal types**, and **type guards** (e.g., `typeof`, `instanceof`, `in`) to enforce runtime checks, keeping your code solid both in type and logic. TL;DR: 1️⃣ Basic types (primitives, arrays, tuples) → difference between `type` and `interface`. 2️⃣ Strict settings in `tsconfig` → enforce type safety. 3️⃣ Unions, intersections, literals, enums. 4️⃙