interface AnyTree extends Tree {
}
export interface TreeCallBack<TType, TReturn = void> {
    (tree: TType): TReturn;
}
/**
 * Tree
 */
export declare class Tree<TData = any, TType extends Tree = AnyTree> {
    value: TData | null;
    children: TType[];
    depth: number;
    ['constructor']: new (value: TData) => this;
    constructor(value?: TData);
    addChild(value: TType): TType;
    isRoot(): boolean;
    hasChildren(): boolean;
    /**
     * Breath Methods
     */
    breathFirstEach(cb: TreeCallBack<TType, boolean | void>): void;
    breathFirstSelect(cb: TreeCallBack<TType, boolean>): TType[];
    /**
     * Depth Methods
     */
    depthFirstEach(cb: TreeCallBack<TType>): void;
    depthFirstSelect(cb: TreeCallBack<TType, boolean>): TType[];
}
export {};