/**
 * Create a DOM element with specified attributes and styles
 */
export declare function createElement(tag: string, attributes?: Record<string, string>, styles?: string): HTMLElement;
/**
 * Remove an element from the DOM
 */
export declare function removeElement(elementOrId: HTMLElement | string): void;
/**
 * Add styles to the document head
 */
export declare function addStyles(id: string, styles: string): void;
/**
 * Generate a unique ID
 */
export declare function generateId(prefix?: string): string;
/**
 * Build URL with query parameters
 */
export declare function buildUrl(baseUrl: string, params: Record<string, any>): string;
/**
 * Parse message from postMessage event
 */
export declare function parseMessage(event: MessageEvent): {
    type: string;
    data?: any;
} | null;
/**
 * Check if origin is trusted
 */
export declare function isTrustedOrigin(origin: string): boolean;