@phaserjs/phaser/components/hierarchy/DecreaseNumChildren.js

Phaser 4

import { HIERARCHY, HierarchyComponent } from "./HierarchyComponent";
export function DecreaseNumChildren(parentID, total = 1) {
  const data = HierarchyComponent.data[parentID];
  data[HIERARCHY.NUM_CHILDREN] = Math.max(0, data[HIERARCHY.NUM_CHILDREN] - total);
}