Primitive vs Non-Primitive Types

let para: string = "This is a Paragraph text";
let username: string = "Alice Collin";

let count: number = 30;
let age: number = 48;
let orderNumber: number = 334455; 

let age: number = 20;
let isAdult: boolean = age > 18;

console.log(isAdult) // true

let nullValue: null = null;
let undefinedValue: undefined = undefined;

console.log(nullValue); // null
console.log(undefinedValue); // undefined

let uniqueSymbol: symbol = Symbol("unique");

let bigIntValue: bigint = 33n;

let numberList: number[] = [1, 2, 3, 4, 5, 6];

console.log(numberList);

let employeeProfile: object = { fullName: "Alice Collin", department: 'HR' };

// print object output in console
console.log(employeeProfile); // { fullName: "Alice Collin", department: 'HR' }

// print individual value in console
console.log(employeeProfile.fullName); // Output: "Alice Collin"
console.log(employeeProfile.department); //  Output: 'HR' 

// using arrow function
let multiple: (num1: number, num2: number) => number = (num1, num2) => num1 * num2;

console.log(multiple(10, 12)); // 120

// using traditional function
function multiple(num1: number, num2: number) {
  return num1 * num2;
}

console.log(multiple(10, 12)); // 120

let age: number = 33;
let username: string = "Alice Collin";
let isAdult: boolean = age > 18;

let dynamicUserValue: any = isAdult ? username : age;
console.log(dynamicUserValue) // `Alice Collin` -> in current scenario, if age less than 18 then it will print -> age.

class Student {
  constructor(public name: string, public age: number) {}
}

let student: Student = new Student("Alice Collin", 20);

console.log(student.name);
console.log(student.age);

interface Image {
  src: string;
  width: number;
  height: number;
}

let point: Point = { src: "image-url", width: 50, height: 100 };

console.log(point);

enum Permission {
  ADMIN,
  IAM,
  GROUP_ADMIN,
}

let permission: Permission = Permission.ADMIN;

console.log(permission);