| 1 | /**
|
| 2 | * @license
|
| 3 | * Copyright Google LLC All Rights Reserved.
|
| 4 | *
|
| 5 | * Use of this source code is governed by an MIT-style license that can be
|
| 6 | * found in the LICENSE file at https://angular.io/license
|
| 7 | */
|
| 8 | import { Path } from '../path';
|
| 9 | import { ResolverHost } from './resolver';
|
| 10 | /**
|
| 11 | * A Virtual Host that allow to alias some paths to other paths.
|
| 12 | *
|
| 13 | * This does not verify, when setting an alias, that the target or source exist. Neither does it
|
| 14 | * check whether it's a file or a directory. Please not that directories are also renamed/replaced.
|
| 15 | *
|
| 16 | * No recursion is done on the resolution, which means the following is perfectly valid then:
|
| 17 | *
|
| 18 | * ```
|
| 19 | * host.aliases.set(normalize('/file/a'), normalize('/file/b'));
|
| 20 | * host.aliases.set(normalize('/file/b'), normalize('/file/a'));
|
| 21 | * ```
|
| 22 | *
|
| 23 | * This will result in a proper swap of two files for each others.
|
| 24 | *
|
| 25 | * @example
|
| 26 | * const host = new SimpleMemoryHost();
|
| 27 | * host.write(normalize('/some/file'), content).subscribe();
|
| 28 | *
|
| 29 | * const aHost = new AliasHost(host);
|
| 30 | * aHost.read(normalize('/some/file'))
|
| 31 | * .subscribe(x => expect(x).toBe(content));
|
| 32 | * aHost.aliases.set(normalize('/some/file'), normalize('/other/path');
|
| 33 | *
|
| 34 | * // This file will not exist because /other/path does not exist.
|
| 35 | * aHost.read(normalize('/some/file'))
|
| 36 | * .subscribe(undefined, err => expect(err.message).toMatch(/does not exist/));
|
| 37 | *
|
| 38 | * @example
|
| 39 | * const host = new SimpleMemoryHost();
|
| 40 | * host.write(normalize('/some/folder/file'), content).subscribe();
|
| 41 | *
|
| 42 | * const aHost = new AliasHost(host);
|
| 43 | * aHost.read(normalize('/some/folder/file'))
|
| 44 | * .subscribe(x => expect(x).toBe(content));
|
| 45 | * aHost.aliases.set(normalize('/some'), normalize('/other');
|
| 46 | *
|
| 47 | * // This file will not exist because /other/path does not exist.
|
| 48 | * aHost.read(normalize('/some/folder/file'))
|
| 49 | * .subscribe(undefined, err => expect(err.message).toMatch(/does not exist/));
|
| 50 | *
|
| 51 | * // Create the file with new content and verify that this has the new content.
|
| 52 | * aHost.write(normalize('/other/folder/file'), content2).subscribe();
|
| 53 | * aHost.read(normalize('/some/folder/file'))
|
| 54 | * .subscribe(x => expect(x).toBe(content2));
|
| 55 | */
|
| 56 | export declare class AliasHost<StatsT extends object = {}> extends ResolverHost<StatsT> {
|
| 57 | protected _aliases: Map<Path, Path>;
|
| 58 | protected _resolve(path: Path): Path;
|
| 59 | get aliases(): Map<Path, Path>;
|
| 60 | }
|