import { AbortablePromise, PromiseOptions } from 'better-promises';
/**
 * Returns true if the current environment is Telegram Mini Apps.
 *
 * It uses the `retrieveLaunchParams` function to determine if the environment contains
 * launch parameters. In case it does, true will be returned.
 *
 * In case you need stricter checks, use async override of this function.
 */
export declare function isTMA(): boolean;
/**
 * Returns promise with true if the current environment is Telegram Mini Apps.
 *
 * First of all, it checks if the current environment contains traits specific to the
 * Mini Apps environment.
 * Then, it attempts to call a Mini Apps method and waits for a response to be received.
 *
 * In case you need less strict checks, use sync override of this function.
 */
export declare function isTMA(type: 'complete', options?: PromiseOptions): AbortablePromise<boolean>;