export declare const testProjectDir: string;
export declare function createTestProjectDir(filename: string): string;
export declare function createTestProjectDirWithFixtures(filename: string): string;
export declare function getCorePackageRootPath(filename: string): string;
export declare function restorePackageJson(filename: string): void;
export declare function removeTestProjectDir(filename: string): void;
export declare const createTestMonorepoProjectDir: (projectDir: string, createProject: (projectDir: string) => Promise<void>) => Promise<void>;
/**
 * Create a full file structure for testing ts-dev-tools packages installation
 * @param projectDir path where to prepare packages
 * @returns packages directory path
 */
export declare const createTestPackagesDir: (projectDir: string) => Promise<string>;