export declare const fileExists: (path: string) => Promise<boolean>;
export declare const dirExists: (path: string) => Promise<boolean>;
export declare const readDir: (path: string) => Promise<string[]>;
export declare const rmFile: (path: string) => Promise<void>;
export declare const writeFile: (path: string, content: string) => Promise<void>;
export declare const rmdir: (path: string) => Promise<void>;
export declare const mkdir: (path: string) => Promise<void>;
export interface CopyFileOpts {
    transform?: (source: string) => string | Promise<string>;
}
export declare const copyFile: (src: string, dest: string, { transform }?: CopyFileOpts) => Promise<void>;
export declare const copyDir: (src: string, dest: string) => Promise<void>;