/**
 * BaseFormControl ref
 * @public
 */
export interface FormControlRef<T extends HTMLElement = HTMLElement> {
    /** Returns the wrapping element ref.*/
    readonly element: T | null;
    /** Returns the underlying input ref.*/
    readonly inputRef?: HTMLInputElement | HTMLSelectElement | null;
    /** Will focus the underlying input or interactive element. */
    focus?: () => void;
    /** Validates the form control and sets the validity state. */
    validate: () => void;
}
/**
 * Ref for form-elements with overlay
 * @public
 */
export interface FormControlWithOverlayRef<T extends HTMLElement = HTMLDivElement> extends FormControlRef<T> {
    /** Function to open the overlay of the control. */
    open: () => void;
    /** Function to close the overlay of the control. */
    close: () => void;
    /** Ref to the opening trigger element. */
    readonly triggerRef?: HTMLElement | null;
}
/**
 * An imperative handle giving access to the root element and the actual input element of the component, as well as the open and close handlers for the overlay.
 * @public
 */
export interface TimeRangePickerRef<T extends HTMLElement = HTMLDivElement> extends Omit<FormControlWithOverlayRef<T>, 'inputRef'> {
    /** Returns the underlying input ref.*/
    readonly inputRef: {
        /** Returns the underlying 'From' input ref.*/
        readonly from?: HTMLInputElement | null;
        /** Returns the underlying 'To' input ref.*/
        readonly to?: HTMLInputElement | null;
    };
}
/**
 * Type guard function that determines whether a FormControlRef is
 * of type FormControlWithOverlayRef.
 * @internal
 */
export declare function isFormControlWithOverlayRef<T extends HTMLElement>(props: any): props is FormControlWithOverlayRef<T>;
/**
 * Type guard function that determines whether the input is of type FormControlRef.
 * @internal
 */
export declare function isFormControlRef(ref: any): ref is FormControlRef;