Код урока

let flag: boolean = true;
flag = false;

let product: [number, string];
product = [1, 'iphone'];
// product = ['Камиль', 1]; error

enum currencies {DOLLAR, EURO, ROUBLE};
console.log(currencies[0]);

enum languages {JavaScript = 11, PHP, Java};
console.log(languages);

let fullName: any = 'Kamil Abzalov';
fullName = 5;

let a: string | number;

type version = string | number;

let ver: version = 10.1;

console.log(ver);