JS recursive children filter

Recursive Filter

// https://stackblitz.com/edit/recursive-filter-prop?file=index.ts
// perf: https://jsbench.me/8cjrlaine7/1

function flatFilter(nestedProp, compareKey, compareId, arr) {
 return arr.filter(o => {
    const keep = o[compareKey] != compareId;
    if (keep && o[nestedProp]) {
      o[nestedProp] = flatFilter(nestedProp, compareKey, compareId, o[nestedProp]);
    }
    return keep;
  });
}

const ARRAY = [
  {
    id: 1,
    children: [
      {
        id: 2,
        children: [
          {
            id: 3,
          },
          {
            id: 4,
          },
        ],
      },
      {
        id: 5,
        children: [
          {
            id: 3,
          },
        ],
      },
    ],
  },
];

console.log(JSON.stringify(flatFilter('children', 'id', 3, ARRAY), null, 2));

/* result
[
  {
    id: 1,
    children: [
      {
        id: 2,
        children: [
          {
            id: 4,
          },
        ],
      },
      {
        id: 5,
        children: [],
      },
    ],
  },
];
*/