Fruit Into Baskets LeetCode solution in JavaScript

1
var totalFruit = function (fruits) {
2
  let myFruits = {};
3
  let n = fruits.length;
4
  let windowStart = 0;
5
  let ans = -Number.MAX_VALUE;
6

7
  for (let windowEnd = 0; windowEnd < n; windowEnd++) {
8
    let fruit = fruits[windowEnd];
9

10
    if (fruit in myFruits) {
11
      myFruits[fruit]++;
12
    } else {
13
      myFruits[fruit] = 1;
14
    }
15

16
    while (Object.keys(myFruits).length > 2) {
17
      let throwOut = fruits[windowStart];
18
      myFruits[throwOut]--;
19
      if (myFruits[throwOut] == 0) {
20
        delete myFruits[throwOut];
21
      }
22
      windowStart++;
23
    }
24
    ans = Math.max(ans, windowEnd - windowStart + 1);
25
  }
26
  return ans;
27
};