export declare abstract class FileSystem {
    abstract readonly root: string;
    abstract readonly sep: string;
    abstract readonly type: 'zip' | 'path';
    abstract readonly writeable: boolean;
    abstract join(...paths: string[]): string;
    abstract isDirectory(name: string): Promise<boolean>;
    abstract existsFile(name: string): Promise<boolean>;
    abstract readFile(name: string, encoding: 'utf-8' | 'base64'): Promise<string>;
    abstract readFile(name: string, encoding: undefined): Promise<Uint8Array>;
    abstract readFile(name: string): Promise<Uint8Array>;
    abstract readFile(name: string, encoding?: 'utf-8' | 'base64'): Promise<Uint8Array | string>;
    /**
       * Get the url for a file entry. If the system does not support get url. This should return an empty string.
       */
    getUrl(name: string): string;
    abstract listFiles(name: string): Promise<string[]>;
    abstract cd(name: string): void;
    isClosed(): boolean;
    close(): void;
    missingFile(name: string): Promise<boolean>;
    walkFiles(target: string, walker: (path: string) => void | Promise<void>): Promise<void>;
}
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