import type { Action } from 'svelte/action';
/**
 * Dev-only guard for the Popover trigger. The trigger renders inside a `<button>`, so its content
 * must be non-interactive (use `Button` with `type="presentational"` for a button-looking trigger).
 * If an interactive element is found inside, it logs a console warning pointing at the offending
 * node and outlines the trigger in red. No-op in production.
 */
export declare const validateTrigger: Action<HTMLElement>;