closerToZero

outputTemp.js

function outputTemp (tempRow) {
  return tempRow
    .split(' ')
    .map(n => Number(n))
    .reduce((min, val) => {
      const abs = Math.abs(val)
      const pos = val >= 0
      if ((pos && abs === min.abs) || abs < min.abs) {
        return { val, abs }
      }
      return min
    },
    {
      val: Infinity,
      abs: Infinity
    })
    .val
}