different types of writing function in typescript code example

Example 1: typescript function

// Named function
function add(x: number, y: number): number {
  return x + y;
}

// Anonymous function
let myAdd = function (x: number, y: number): number {
  return x + y;
};

Example 2: types function typescript

interface Param {
    title: string;
    callback: function;
}