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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 */
8import { Observable } from 'rxjs';
9import { Path, PathFragment } from '../path';
10import { FileBuffer, Host, HostCapabilities, HostWatchEvent, HostWatchOptions, Stats } from './interface';
11/**
12 * A Host that runs a method before calling its delegate. This is an abstract class and its actual
13 * behaviour is entirely dependant of the subclass.
14 */
15export declare abstract class ResolverHost<T extends object> implements Host<T> {
16 protected _delegate: Host<T>;
17 protected abstract _resolve(path: Path): Path;
18 constructor(_delegate: Host<T>);
19 get capabilities(): HostCapabilities;
20 write(path: Path, content: FileBuffer): Observable<void>;
21 read(path: Path): Observable<FileBuffer>;
22 delete(path: Path): Observable<void>;
23 rename(from: Path, to: Path): Observable<void>;
24 list(path: Path): Observable<PathFragment[]>;
25 exists(path: Path): Observable<boolean>;
26 isDirectory(path: Path): Observable<boolean>;
27 isFile(path: Path): Observable<boolean>;
28 stat(path: Path): Observable<Stats<T> | null> | null;
29 watch(path: Path, options?: HostWatchOptions): Observable<HostWatchEvent> | null;
30}