/// <reference types="node" />
/**
 * @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 { Path, virtualFs } from '@angular-devkit/core';
import { NodeJsSyncHost } from '@angular-devkit/core/node';
import { Stats } from 'fs';
import { Observable } from 'rxjs';
export declare class TestProjectHost extends NodeJsSyncHost {
    protected _root: Path;
    private _scopedSyncHost;
    constructor(_root: Path);
    scopedSync(): virtualFs.SyncDelegateHost<Stats>;
    initialize(): Observable<void>;
    restore(): Observable<void>;
    private _gitClean();
    private _gitInit();
    private _exec(cmd, args);
    writeMultipleFiles(files: {
        [path: string]: string | ArrayBufferLike | Buffer;
    }): void;
    replaceInFile(path: string, match: RegExp | string, replacement: string): void;
    appendToFile(path: string, str: string): void;
    fileMatchExists(dir: string, regex: RegExp): (string & {
        __PRIVATE_DEVKIT_PATH: void;
    } & {
        __PRIVATE_DEVKIT_PATH_FRAGMENT: void;
    }) | undefined;
    copyFile(from: string, to: string): void;
}