import Popup from './authentication/popup';
import Redirect from './authentication/redirect';
import Iframe from './authentication/iframe';
import Transaction from './authentication/transaction';
import { type TransactionData, type VerifyInput } from './types/transaction';
import RedirectUriParamsPersister from './helpers/persisters/redirectUriParams';
import { type SDKOptions, type ResolvedOptions } from './types/sdk';
import { type PopupSDK, type IframeSDK, type RedirectSDK } from './types/authentication';
/**
 * Accounts SDK main class for "Sign in with LiveChat".
 */
export default class AccountsSDK implements PopupSDK, IframeSDK, RedirectSDK {
    options: ResolvedOptions;
    transaction: Transaction;
    redirectUriParamsPersister: RedirectUriParamsPersister;
    constructor(options: SDKOptions);
    /**
     * Use iframe for authorization. Not recommended due to ITP 2.0.
     */
    iframe(options?: Partial<SDKOptions>): Iframe;
    /**
     * Use popup for authorization. Must be called inside a click handler.
     */
    popup(options?: Partial<SDKOptions>): Popup;
    /**
     * Use redirect for authorization.
     */
    redirect(options?: Partial<SDKOptions>): Redirect;
    /**
     * Generate an authorization URL.
     * @param options - Options to override SDK defaults.
     * @param flow - Set to `'button'` for popup and iframe flows.
     */
    authorizeURL(options?: Partial<SDKOptions>, flow?: string): string;
    /**
     * Verify if redirect transaction params are valid.
     * @param authorizeData - Authorize data to validate.
     * @returns Transaction state if valid, null otherwise.
     */
    verify(authorizeData: VerifyInput): TransactionData | null;
}