/**
 * @license
 * Copyright (c) 2016 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
 */
import { FileRelativeUrl, PackageRelativeUrl, ResolvedUrl, ScannedImport } from '../model/model';
import { UrlResolver } from './url-resolver';
/**
 * Resolves a URL using multiple resolvers.
 */
export declare class MultiUrlResolver extends UrlResolver {
    private _resolvers;
    constructor(_resolvers: ReadonlyArray<UrlResolver>);
    /**
     * Returns the first resolved URL (which is not undefined.)
     */
    resolve(firstUrl: ResolvedUrl | PackageRelativeUrl, secondUrl?: FileRelativeUrl, import_?: ScannedImport): ResolvedUrl | undefined;
    /**
     * Delegates to relative method on the first resolver which can resolve the
     * destination URL.
     */
    relative(to: ResolvedUrl): PackageRelativeUrl;
    relative(from: ResolvedUrl, to: ResolvedUrl, kind?: string): FileRelativeUrl;
}