Best practice-ek

function processData(data: { value: number }) {
  return data.value * 2
}

function processInput(input: unknown) {
  if (typeof input === "number") return input * 2
  throw new Error("Nem szám típusú input")
}

const name = "Adam"
const numbers = [1, 2, 3]
const isActive = true

interface Address {
  street: string
  city: string
  country: string
}

interface UserRole {
  role: "admin" | "editor" | "viewer"
  permissions: string[]
}

interface User {
  id: number
  name: string
  email: string
  address: Address
  auth: UserRole
  createdAt: Date
}

type NullableString = string | null
type PersonBasicInfo = { name: string; age: number }

interface User {
  id: number
  name: string
  email: string
  password: string
}

type UpdateUserDto = Partial<User>
type StrictUser = Required<User>
type PublicUser = Pick<User, "id" | "name">
type SafeUser = Omit<User, "password">
type ImmutableUser = Readonly<User>
type UserMap = Record<string, User>

{
  "compilerOptions": {
    "strict": true
  }
}