export declare const toggleAngieSidebar: (iframe: HTMLIFrameElement, isOpen: boolean, containerId?: string) => void;
/**
 * Two instances on a page usually share one iframe origin, so `event.origin` cannot tell
 * their iframes apart. The source window can.
 *
 * Returns true when there is nothing to compare against, so single-instance hosts behave
 * exactly as before.
 */
export declare const isFromIframe: (event: MessageEvent, iframe: HTMLIFrameElement | null) => boolean;
export declare const isTrustedIframeMessage: (event: MessageEvent, iframeOrigin: string | undefined, iframe: HTMLIFrameElement | null) => boolean;
export declare const generateInstanceId: () => string;
export declare const isMobile: () => boolean;
export declare const sendSuccessMessage: (port: MessagePort, payload?: unknown) => void;
export declare const sendErrorMessage: (port: MessagePort, error: unknown) => void;
export declare const waitForDocumentReady: () => Promise<unknown>;
export declare const isSafeUrl: (url: string, trustedOrigins?: string[]) => boolean;