/** * @license * Copyright (c) 2017 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 { PackageRelativeUrl, ResolvedUrl } from '../model/url'; import { UrlLoader } from './url-loader'; /** * Resolves requests first from an in-memory map of file contents, and if a * file isn't found there, defers to another url loader. * * Useful for the editor use case. An editor will have a number of files in open * buffers at any time. For these files, the editor's in-memory buffer is * canonical, so that their contents are read even when they have unsaved * changes. For all other files, we can load the files using another loader, * e.g. from disk. * * TODO(rictic): make this a mixin that mixes another loader. */ export declare class InMemoryOverlayUrlLoader implements UrlLoader { private readonly _fallbackLoader; urlContentsMap: Map; constructor(fallbackLoader?: UrlLoader); canLoad(url: ResolvedUrl): boolean; load(url: ResolvedUrl): Promise; readDirectory?: (pathFromRoot: string, deep?: boolean) => Promise; }