import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Changes the username of a supergroup or channel, requires creator privileges in the
 * supergroup or channel
 * @param {Object} params
 * @param {number} [params.supergroupId] - Identifier of the supergroup or channel
 * @param {string} [params.username] - New value of the username. Use an empty string
 * to remove the username
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type SetSupergroupUsernameMethod = <ResponseT = OkUnion>(params: SetSupergroupUsernameParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SetSupergroupUsernameParams {
    /** Identifier of the supergroup or channel */
    supergroupId?: number;
    /** New value of the username. Use an empty string to remove the username */
    username?: string;
}