import { DateFormat, DateType, InnerLocale, PanelMode, PickerMode, SharedTimeProps, TimeUnit } from '../interface';
export declare function toArray<T>(val: T | T[]): T[];
export declare function getValue<T>(values: null | undefined | (T | null)[], index: number): T | null;
declare type UpdateValue<T> = (prev: T) => T;
export declare function updateValues<T, R = [T | null, T | null] | null>(values: [T | null, T | null] | null, value: T | UpdateValue<T>, index: number): R;
export declare function getClosingViewDate(viewDate: DateType, picker: PickerMode, offset?: number, yearItemNumber?: number): DateType;
export declare function getDefaultFormat(format: DateFormat | undefined, picker: PickerMode | undefined, showTime?: boolean | SharedTimeProps | (Omit<SharedTimeProps, 'defaultValue'> & {
    defaultValue?: DateType[];
}), use12Hours?: boolean): string;
export declare function getPlaceholder(picker: PickerMode | undefined, locale: InnerLocale, customizePlaceholder?: string): string;
export declare function getRangePlaceholder(picker: PickerMode | undefined, locale: InnerLocale, customizePlaceholder?: [string, string]): [string, string];
export declare function elementsContains(elements: (HTMLElement | undefined | null)[], target: HTMLElement): boolean;
export declare function getInputSize(picker: PickerMode | undefined, format: DateFormat): number;
export declare function getDataOrAriaProps(props: any): any;
export declare function getTimeProps(props: {
    format?: string;
    picker?: PickerMode;
} & SharedTimeProps): SharedTimeProps | {
    showTime: SharedTimeProps;
};
export declare function leftPad(str: string | number, length: number, fill?: string): string;
export declare function isVisible(element: HTMLElement | SVGGraphicsElement): boolean;
export declare function waitElementReady(element: HTMLElement, callback: () => void): () => void;
export declare function scrollTo(element: HTMLElement, to: number, duration: number): void;
export declare const PickerModeMap: Record<PickerMode, ((next: PanelMode) => PanelMode) | null>;
export declare const getInternalNextMode: (nextMode: PanelMode, picker: PickerMode) => PanelMode;
export declare const generateUnits: (start: number, end: number, step: number, disabledUnits: number[] | undefined) => TimeUnit[];
export {};