/// <reference types="node" />
/// <reference types="mocha" />
/**
 * @license
 * Copyright (c) 2018 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt
 * The complete set of authors may be found at
 * http://polymer.github.io/AUTHORS.txt
 * The complete set of contributors may be found at
 * http://polymer.github.io/CONTRIBUTORS.txt
 * Code distributed by Google as part of the polymer project is also
 * subject to an additional IP rights grant found at
 * http://polymer.github.io/PATENTS.txt
 */
declare namespace Mocha {
    namespace utils {
        function highlightTags(somethingSomething: string): void;
    }
    interface IRunner extends NodeJS.EventEmitter {
        name?: string;
        total: number;
    }
    interface IRunnable {
        parent?: ISuite;
        root: boolean;
        state?: 'passed' | 'failed';
        pending: boolean;
    }
    interface ISuite {
        root: boolean;
    }
}
interface Window {
    /**
     * A function to filter out expected uncaught errors.
     *
     * If this function exists, then any events fired from the window's 'error'
     * will be passed to this function. If it returns true, then the error event
     * will not be logged and will not cause tests to fail.
     */
    uncaughtErrorFilter?(errorEvent: ErrorEvent): boolean;
}