export function fibonacci(value) {
  if(value < 1) return 0
  if(value <= 2) return 1
  let fib1 = 0
  let fib2 = 1
  let fibN = value
  for (let i =1; i <=value; i++){
   fibN = fib1 + fib2
   fib2 = fib1
   fib1 = fibN

  }

  return fibN
}