import { FileSystem } from './FileSystem'; declare class WebpackFileSystem implements FileSystem { private fs; pathSeparator: string; constructor(fs: any); isFileInDirectory(filename: string, directory: string): boolean; pathExists(filename: string): boolean; readFileAsUtf8(filename: string): string; join(...paths: string[]): string; resolvePath(pathInput: string): string; listPaths(dir: string): string[]; isDirectory(dir: string): boolean; } export { WebpackFileSystem };