//err

function addTwo(num) {

return num + 2;

}

addTwo(2);

//correct way

function addTwo2(num: number) {

return num + 22;

}

addTwo2(2);

let userId = (id: number, name: string, isLogin: boolean = false) => {};

userId(1, "fahim");

userId(1, "fahim", true);

function addTwo3(num: number): number {

// return num + 22;

return "fahim"; //err

}

addTwo3(2);

function getNumber(num: number): number {

}

const num = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];

num.map((n: number): number => {

return n * 2;

});

function consoleErr(err: string): void {

console.log(err);

return 1; //err

}

function handleErr(err: string): never {

throw new Error(err);

}

export {};