/// <reference lib="dom" />
import type { AuthenticatorCredentialResult, CheckDataResult } from '@machinat/auth';
import type { WebviewClientAuthenticator } from '@machinat/webview';
import MessengerUser from '../User';
import MessengerUserProfile from '../UserProfile';
import type { MessengerAuthContext, MessengerAuthData } from './types';
declare type MessengerClientOptions = {
    /** The Facebook page id */
    pageId: string;
};
export default class MessengerClientAuthenticator implements WebviewClientAuthenticator<void, MessengerAuthData, MessengerAuthContext> {
    platform: "messenger";
    pageId: string;
    marshalTypes: (typeof MessengerUser | typeof MessengerUserProfile)[];
    constructor({ pageId }: MessengerClientOptions);
    init(): Promise<void>;
    fetchCredential(): Promise<AuthenticatorCredentialResult<void>>;
    checkAuthData(data: MessengerAuthData): CheckDataResult<MessengerAuthContext>;
    closeWebview(): boolean;
}
export {};