object-to-class.ts

let student = {
  name: 'Alice',
  major: 'Computer Science',
  year: 2
};

// into...

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

let student = {
  name: 'Alice',
  major: 'Computer Science',
  year: 2
};

// ...finally:

let student = new Student('Alice', 'Computer Science', 2);