/**
 * @license
 * Copyright Google Inc. All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { Observable } from 'rxjs/Observable';
import { Path, PathFragment } from '../path';
import { FileBuffer, Host, HostCapabilities, HostWatchEvent, HostWatchEventType, HostWatchOptions, Stats } from './interface';
export declare class SimpleMemoryHost implements Host<{}> {
    private _cache;
    private _watchers;
    protected _isDir(path: Path): boolean;
    protected _updateWatchers(path: Path, type: HostWatchEventType): void;
    readonly capabilities: HostCapabilities;
    write(path: Path, content: FileBuffer): Observable<void>;
    read(path: Path): Observable<FileBuffer>;
    delete(path: Path): Observable<void>;
    rename(from: Path, to: Path): Observable<void>;
    list(path: Path): Observable<PathFragment[]>;
    exists(path: Path): Observable<boolean>;
    isDirectory(path: Path): Observable<boolean>;
    isFile(path: Path): Observable<boolean>;
    stats(_path: Path): Observable<Stats<{}>> | null;
    watch(path: Path, options?: HostWatchOptions): Observable<HostWatchEvent> | null;
}