rwc-newsletter-ch-09-04-22

function* fromTo(x, y) {
  for (let i = x; i <= y; i++) {
    yield i;
  }
}

let fn = fromTo(5, 7);

let fnA = [...fn];
const gen=()=>{
    console.log(fnA)
    let toReturn = fnA[0]
    fnA.shift()
    return toReturn;
    
}

gen() // 5
gen() //6
gen() //7
gen() // undefined