export declare function useContainerWidth(): [(el: Element | null) => void, number | null];
/** Popover at or above this container width, bottom-sheet presentation below (REQ-SURF-98). */
export declare const SHEET_BELOW_PX = 640;
/** DateRangePicker shows two months at or above this container width (REQ-SURF-102). */
export declare const TWO_MONTHS_FROM_PX = 768;
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