import Parser, { type ParserOptions } from './token/stream-parser';
import { type Metadata } from './metadata-parser';
import { Result } from './token/helpers';
declare function readValue(buf: Buffer, offset: number, metadata: Metadata, options: ParserOptions): Result<unknown>;
declare function isPLPStream(metadata: Metadata): boolean | undefined;
/**
 * Reads a PLP (partially length-prefixed) value.
 *
 * PLP values can be arbitrarily large and span many chunks of incoming data,
 * so they are read incrementally: whatever part of the value is available is
 * consumed right away, and the reader's progress is kept across calls. If the
 * available data runs out, `NotEnoughDataError` is thrown and `read` can be
 * called again once more data has arrived.
 */
declare class PLPReader {
    metadata: Metadata;
    expectedLength: bigint | undefined;
    chunks: Buffer[];
    length: number;
    chunkRemaining: number;
    constructor(metadata: Metadata);
    read(parser: Parser): unknown;
}
export { readValue, isPLPStream, PLPReader };