/**
 * JQHTML Viewport Resize Dispatch
 *
 * One framework-owned, debounced window 'resize' listener fans out to every live
 * component in the document by calling on_viewport_resize(viewport_width).
 *
 * Components never bind their own window listener, so there is nothing to unbind
 * in on_stop() - a component that is stopped or removed from the document simply
 * stops being found by the dispatcher.
 */
/** Trailing-edge debounce applied to the window resize listener. */
export declare const VIEWPORT_RESIZE_DEBOUNCE_MS = 30;
/**
 * Current viewport width in CSS pixels.
 *
 * window.innerWidth is used (not $(window).width()) because it matches the width
 * CSS media queries resolve against. It includes the scrollbar gutter.
 *
 * Returns 0 outside a browser (SSR).
 */
export declare function get_viewport_width(): number;
/**
 * Call on_viewport_resize(width) on every component currently in the document.
 *
 * Walks $('.Component') in document order (parents before children). Elements
 * with no component instance, stopped components, and components whose hook is
 * still the base no-op (no override on the class or the instance) are skipped. A component
 * that throws is logged and the walk continues - one bad handler must not stop
 * the rest of the page from resizing.
 */
export declare function dispatch_viewport_resize(jQuery: any): void;
/**
 * Install the single window resize listener. Idempotent - repeated init() calls
 * and non-browser environments are no-ops.
 */
export declare function init_viewport_resize(jQuery: any): void;
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