/**
 * Shared datepicker utility functions used by both Elements and React packages.
 * Only framework-agnostic functions belong here.
 */
/**
 * Determines the appropriate input type based on device.
 * Returns 'text' on iOS to avoid native date picker conflicts.
 */
export declare const getDatepickerInputType: () => string;
/**
 * Validates that a range has valid order (start <= end).
 * Returns true if range is valid or incomplete.
 */
export declare const validateRangeOrder: (values: string[]) => boolean;
/**
 * Sorts date strings chronologically.
 */
export declare const sortDates: (dates: string[]) => string[];
/**
 * Filters dates to only include selectable ones based on constraints.
 */
export declare const filterDates: (dates: string[], min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => string[];
/**
 * Generates input CSS classes for datepicker.
 */
export declare const getDatepickerInputClasses: (fullwidth: boolean, showRangeLabels: boolean, multiple: boolean, range: boolean, readonly?: boolean, inputType?: string) => Record<string, boolean>;
/**
 * Generates button CSS classes for calendar toggle button.
 */
export declare const getDatepickerButtonClasses: () => Record<string, boolean>;
/**
 * Generates range label CSS classes.
 */
export declare const getRangeLabelClasses: (showRangeLabels: boolean) => Record<string, boolean>;
/**
 * Processes date selection from calendar events.
 * Converts the calendar's date selection into the appropriate string format.
 */
export declare const processDateSelection: (detail: string | string[], multiple: boolean, range: boolean) => string;
/**
 * Handles calendar positioning based on viewport and input position.
 * Positions calendar below input by default, flips above if overflowing.
 *
 * Accepts plain DOM elements (not framework-specific refs).
 */
export declare const handleCalendarPosition: (popup: HTMLElement | null, input: HTMLElement | null, hasCounter?: boolean) => void;
/**
 * Handles common keyboard interactions for datepicker inputs.
 *
 * - Space: Opens calendar
 * - Enter: Submits form, focuses next input, or blurs
 * - Comma: Adds date to selection (multiple) or blurs input
 */
export declare const handleDatepickerKeydown: (event: KeyboardEvent, toggleCalendar: (e: Event) => void, submitForm?: () => void, focusNextInput?: () => void, blurInput?: () => void, commaHandler?: (e: KeyboardEvent) => void) => void;
/**
 * Handles keyboard interactions for calendar button.
 * Responds to Enter and Space keys.
 */
export declare const handleDatepickerButtonKeydown: (event: KeyboardEvent, toggleCalendar: (e: Event) => void) => void;
declare const _default: {
    getDatepickerInputType: () => string;
    validateRangeOrder: (values: string[]) => boolean;
    sortDates: (dates: string[]) => string[];
    filterDates: (dates: string[], min?: string | null, max?: string | null, excludedDates?: string[], excludedWeekdays?: string[]) => string[];
    getDatepickerInputClasses: (fullwidth: boolean, showRangeLabels: boolean, multiple: boolean, range: boolean, readonly?: boolean, inputType?: string) => Record<string, boolean>;
    getDatepickerButtonClasses: () => Record<string, boolean>;
    getRangeLabelClasses: (showRangeLabels: boolean) => Record<string, boolean>;
    processDateSelection: (detail: string | string[], multiple: boolean, range: boolean) => string;
    handleCalendarPosition: (popup: HTMLElement | null, input: HTMLElement | null, hasCounter?: boolean) => void;
    handleDatepickerKeydown: (event: KeyboardEvent, toggleCalendar: (e: Event) => void, submitForm?: () => void, focusNextInput?: () => void, blurInput?: () => void, commaHandler?: (e: KeyboardEvent) => void) => void;
    handleDatepickerButtonKeydown: (event: KeyboardEvent, toggleCalendar: (e: Event) => void) => void;
};
export default _default;