Codility: TapeEquilibrium Solution

1function solution(A) {
2  const sum = A.reduce((acc, el) => acc + el, 0)
3  let accSum = 0
4  let diff = []
5  for (const el of A) {
6    accSum += el
7    diff.push(Math.abs(sum - 2 * accSum))
8  }
9  diff.pop()
10  return Math.min.apply(null, diff)
11}