export let Z_NO_FLUSH: number;
export let Z_PARTIAL_FLUSH: number;
export let Z_SYNC_FLUSH: number;
export let Z_FULL_FLUSH: number;
export let Z_FINISH: number;
export let Z_BLOCK: number;
export let Z_TREES: number;
export let Z_OK: number;
export let Z_STREAM_END: number;
export let Z_NEED_DICT: number;
export let Z_ERRNO: number;
export let Z_STREAM_ERROR: number;
export let Z_DATA_ERROR: number;
export let Z_MEM_ERROR: number;
export let Z_BUF_ERROR: number;
export let Z_VERSION_ERROR: number;
export let Z_DEFLATED: number;
/**
 * z_stream constructor
 * @constructor
 */
export function z_stream(): void;
/**
 * TODO
 * @constructor
 */
export function gz_header(): void;
export let common_initialized: boolean;