import type { configType, callbackFntype, callbackEventType } from './types';
export declare class OnrampWebSDK {
    _appURL: string;
    _isVisible: boolean;
    _originalBodyOverflow: string | null;
    _clientCallbacks: {
        [key: string]: callbackFntype;
    };
    config: configType;
    _domNodes: {
        body: HTMLBodyElement | null;
        iframe: HTMLIFrameElement;
        overlay: HTMLDivElement | null;
        shadow: ShadowRoot | null;
        shadowHost: HTMLDivElement | null;
        container: Element | null;
    };
    constructor(config: configType);
    _getURL(): Promise<string>;
    _registerSDKEvents(): void;
    _teardownSDKEvents(): void;
    _handleEscapeClick: (event: {
        key: string;
        keyCode: number;
    }) => void;
    _widgetMessageHandler: (e: callbackEventType) => void;
    _widgetCloseRequestHandler: () => void;
    _widgetCloseHandler: () => void;
    _widgetCloseCancelHandler: () => void;
    _widgetReadyHandler: () => void;
    _widgetFailedHandler: () => void;
    close: () => void;
    show: () => Promise<false | undefined>;
    on: (eventType: string, callbackFn: callbackFntype) => void;
}