import { IReadable } from '../types.js';
import { IFrameDecoder } from './types.js';
/** options for {@link FramedReader} */
export interface FramedReaderOptions {
    initialBufferSize?: number;
    readChunkSize?: number;
}
/** a reader that decodes frames one by one from a readable stream */
export declare class FramedReader<Frame> {
    #private;
    /**
     * @param readable  fuman readable stream to read from
     * @param decoder  frame decoder
     * @param options  extra options
     */
    constructor(readable: IReadable, decoder: IFrameDecoder<Frame>, options?: FramedReaderOptions);
    /** read a next frame from the stream, or `null` if the stream ended */
    read(): Promise<Frame | null>;
    /** create an async iterator that yields frames */
    [Symbol.asyncIterator](): AsyncIterator<Frame>;
}