challenge-algorithms-v2.0-wellingtonCarlos/04-fibonacci/index.js

export function fibonacci(value) {
  if (value < 1) return 0
  if (value <= 2) return 1
  let fibonnaci1 = 0
  let fibonnaci2 = 1
  let fibx = value

  for (let i = 2; i <= value; i++) {

    fibx = fibonnaci2 + fibonnaci1
    fibonnaci1 = fibonnaci2
    fibonnaci2 = fibx
  }

  return fibx

}