/**
 * A filesystem that can update and read files.
 * It does not support creating new files or directories.
 *
 */
export interface ValFS {
    readDirectory(rootDir: string, extensions: readonly string[] | undefined, excludes: readonly string[] | undefined, includes: readonly string[], depth?: number | undefined): readonly string[];
    writeFile(filePath: string, data: string | Buffer, encoding: "binary" | "utf8"): void;
    fileExists(filePath: string): boolean;
    readFile(filePath: string): string | undefined;
    readBuffer(filePath: string): Buffer | undefined;
    rmFile(filePath: string): void;
    realpath(path: string): string;
}