import { TimePickerOptions, TimePickerState } from './time-picker.types';
/**
 * Headless time picker. Owns hour/minute inputs and an optional AM/PM toggle,
 * commits a 24h `HH:MM` value on confirm and reflects open state via
 * `data-state`. Positioning via floating-ui; no visual styling in JS.
 *
 * Markup:
 * ```html
 * <div data-c42-timepicker>
 *   <button data-c42-timepicker-trigger><span data-c42-timepicker-value></span></button>
 *   <div data-c42-timepicker-panel>
 *     <input data-c42-timepicker-hour inputmode="numeric" />
 *     <input data-c42-timepicker-minute inputmode="numeric" />
 *     <button data-c42-timepicker-period>AM</button>
 *     <button data-c42-timepicker-cancel>Cancel</button>
 *     <button data-c42-timepicker-confirm>OK</button>
 *   </div>
 * </div>
 * ```
 */
export declare class TimePicker {
    private readonly root;
    private readonly trigger;
    private readonly panel;
    private readonly valueEl;
    private readonly hourInput;
    private readonly minuteInput;
    private readonly periodBtn;
    private readonly confirmBtn;
    private readonly cancelBtn;
    private readonly format;
    private readonly minuteStep;
    private readonly placeholder;
    private readonly closeOnConfirm;
    private readonly placement;
    private readonly offset;
    private selected;
    private period;
    private open;
    private stopAutoUpdate;
    private cleanups;
    constructor(root: HTMLElement, options?: TimePickerOptions);
    private init;
    /** Strip non-digits and clamp the field to its max as the user types. */
    private sanitize;
    private renderLabel;
    private formatDisplay;
    /** Populate the inputs/period from the current selection (or now). */
    private syncInputs;
    private nowParsed;
    private togglePeriod;
    private renderPeriod;
    /** Read the inputs into a normalized 24h Parsed value. */
    private readInputs;
    confirm(): void;
    cancel(): void;
    private emitChange;
    private onOutside;
    toggle(): void;
    openPanel(): void;
    close(): void;
    /** Programmatically set the time (24h `HH:MM`). */
    setValue(value: string | null): void;
    clear(): void;
    private position;
    get value(): string | null;
    get isOpen(): boolean;
    getState(): TimePickerState;
    on<E extends Event = Event>(event: string, handler: (event: E) => void): () => void;
    destroy(): void;
}