/**
 * PXM Select Trigger Component
 *
 * The clickable button that opens/closes the select dropdown
 */
export declare class PxmSelectTrigger extends HTMLElement {
    private selectRoot?;
    private initialized;
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    private initialize;
    private findSelectRoot;
    private setupEventListeners;
    private handleClick;
    private handleKeydown;
    private handleFocus;
    private handleBlur;
    updateAttributes(config: Record<string, any>, state: any): void;
    focus(): void;
}