| 1 | /**
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| 2 | * @license
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| 3 | * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
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| 4 | * This code may only be used under the BSD style license found at
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| 5 | * http://polymer.github.io/LICENSE.txt
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| 6 | * The complete set of authors may be found at
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| 7 | * http://polymer.github.io/AUTHORS.txt
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| 8 | * The complete set of contributors may be found at
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| 9 | * http://polymer.github.io/CONTRIBUTORS.txt
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| 10 | * Code distributed by Google as part of the polymer project is also
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| 11 | * subject to an additional IP rights grant found at
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| 12 | * http://polymer.github.io/PATENTS.txt
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| 13 | */
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| 14 | import { PackageRelativeUrl, ResolvedUrl } from '../model/url';
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| 15 | import { UrlLoader } from './url-loader';
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| 16 | /**
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| 17 | * Resolves requests first from an in-memory map of file contents, and if a
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| 18 | * file isn't found there, defers to another url loader.
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| 19 | *
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| 20 | * Useful for the editor use case. An editor will have a number of files in open
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| 21 | * buffers at any time. For these files, the editor's in-memory buffer is
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| 22 | * canonical, so that their contents are read even when they have unsaved
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| 23 | * changes. For all other files, we can load the files using another loader,
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| 24 | * e.g. from disk.
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| 25 | *
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| 26 | * TODO(rictic): make this a mixin that mixes another loader.
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| 27 | */
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| 28 | export declare class InMemoryOverlayUrlLoader implements UrlLoader {
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| 29 | private readonly _fallbackLoader;
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| 30 | urlContentsMap: Map<ResolvedUrl, string>;
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| 31 | constructor(fallbackLoader?: UrlLoader);
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| 32 | canLoad(url: ResolvedUrl): boolean;
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| 33 | load(url: ResolvedUrl): Promise<string>;
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| 34 | readDirectory?: (pathFromRoot: string, deep?: boolean) => Promise<PackageRelativeUrl[]>;
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| 35 | }
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