export declare class WatchFileSystem {
    private compiler;
    private wfs;
    private ignoredFile;
    constructor(compiler: any, wfs: any, ignoredFile: string);
    watch(files: string[], dirs: any, missing: any, startTime: any, options: any, callback: any, callbackUndelayed: any): {
        close: () => any;
        pause: () => any;
        getContextTimestamps: () => any;
        getFileTimestamps: () => any;
    };
}