export declare abstract class AsyncStream implements Disposable {
    abstract read(n: number): Promise<Buffer>;
    abstract [Symbol.dispose](): any;
}
export declare class AsyncFileStream extends AsyncStream {
    private readonly filePath;
    readPosition: number;
    readonly size: number;
    private fd;
    private buffer;
    constructor(filePath: string, readPosition?: number, lockFile?: boolean, bufferSize?: number);
    read(): Promise<Buffer>;
    [Symbol.dispose](): void;
}
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