export interface WebchatServiceOptions {
    targetWindow: HTMLIFrameElement;
}
export interface WebchatServiceTriggerOptions {
    successor?: string;
    teaserButton?: boolean;
}
export declare class WebchatService {
    private targetWindow;
    constructor(options: WebchatServiceOptions);
    triggerElement(options: WebchatServiceTriggerOptions): void;
    setMinimized(isMinimized: boolean): void;
}