import { PopupParams } from '@tma.js/bridge';
import { either as E } from 'fp-ts';
import { InvalidArgumentsError } from '../../errors.js';
import { ShowOptions } from './types.js';
/**
 * Prepares popup parameters before sending them to native app.
 * @param params - popup parameters.
 */
export declare function prepareParams(params: ShowOptions): E.Either<InvalidArgumentsError, PopupParams>;