how to declare an arrow function type in typescript code example

Example 1: generic arrow function typescript

const foo = <T extends unknown>(x: T) => x;

Example 2: arrow function in typescript

//prototype 
const/let <FunctionName> = (params: type) :<ReturnType> =>{
  ....
};

const PrintName =  (name: string): string => {
  return console.log("my name is " , name) ;
}