/**
 * WCAG 1.4.10 Reflow (Level AA) — shared detection for sidebar flyout,
 * compact filter toolbar, disabled column stickies, and single-column nav scroll.
 *
 * Triggers when any of:
 * - viewport width ≤ 320 CSS px (1.4.10 test width),
 * - browser zoom ≥ ~200% (`visualViewport.scale`),
 * - short viewport height (≤ 640px or ≤ 420px).
 */
/** WCAG 1.4.10 — content must reflow at 320 CSS px without horizontal scroll. */
declare const REFLOW_MAX_WIDTH_PX = 320;
declare const REFLOW_MAX_WIDTH_MQ = "(max-width: 320px)";
declare const REFLOW_MAX_HEIGHT_MQ = "(max-height: 640px)";
declare const COARSE_POINTER_MQ = "(pointer: coarse)";
/** Browser zoom ≥ ~200%, narrow 1.4.10 width, or a genuinely short viewport. */
declare function computeReflowViewport(): boolean;
declare function computeCoarsePointer(): boolean;
type Listener = () => void;
declare function subscribeReflowViewport(callback: Listener): () => void;
declare function getReflowViewportSnapshot(): boolean;
declare function getServerReflowViewportSnapshot(): boolean;
declare function subscribeCoarsePointer(callback: Listener): () => void;
declare function getCoarsePointerSnapshot(): boolean;
declare function getServerCoarsePointerSnapshot(): boolean;

export { COARSE_POINTER_MQ, REFLOW_MAX_HEIGHT_MQ, REFLOW_MAX_WIDTH_MQ, REFLOW_MAX_WIDTH_PX, computeCoarsePointer, computeReflowViewport, getCoarsePointerSnapshot, getReflowViewportSnapshot, getServerCoarsePointerSnapshot, getServerReflowViewportSnapshot, subscribeCoarsePointer, subscribeReflowViewport };