/**
 * @param {DataReader} reader
 * @returns {number} value
 */
export function readZigZag(reader: DataReader): number;
/**
 * @param {DataReader} reader
 * @returns {bigint} value
 */
export function readZigZagBigInt(reader: DataReader): bigint;
/**
 * Read avro header
 *
 * @param {DataReader} reader
 * @returns {{ metadata: Record<string, any>, syncMarker: Uint8Array }}
 */
export function avroMetadata(reader: DataReader): {
    metadata: Record<string, any>;
    syncMarker: Uint8Array;
};
import type { DataReader } from 'hyparquet/src/types.js';
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