NapCatQQ/.pnpm-store/v3/files/fc/42103a9e255e0f0cd9ee1bf6271d247cc011705fb0bf3c43f723b53b84a1954e1eca54055066991c1901b63a025944247fafb6253ed167d35bb877d289377e

import { addUniqueItem, removeItem } from 'motion-utils';
import { compareByDepth } from './compare-by-depth.mjs';

class FlatTree {
    constructor() {
        this.children = [];
        this.isDirty = false;
    }
    add(child) {
        addUniqueItem(this.children, child);
        this.isDirty = true;
    }
    remove(child) {
        removeItem(this.children, child);
        this.isDirty = true;
    }
    forEach(callback) {
        this.isDirty && this.children.sort(compareByDepth);
        this.isDirty = false;
        this.children.forEach(callback);
    }
}

export { FlatTree };