/**
 * Copyright 2017 Matt Acosta
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { INode } from './INode';
/**
 * Provides helper methods for working with `INode` objects.
 */
export declare class NodeExtensions {
    /**
     * Determines the number of children contained in a parent node after
     * including the length of child lists.
     *
     * @param {INode} node
     *   The parent node.
     */
    static childCount(node: INode): number;
    /**
     * Determines if two nodes are equal.
     */
    static equals(a: INode | null, b: INode | null): boolean;
}