export declare type FunctionProp<T> = (...args: any[]) => T;
export declare function isNotNil(value: any): boolean;
export declare function valueFunctionProp<T>(prop: FunctionProp<T>, ...args: any[]): T;
export declare function filterNotEmptyNode(node: Node): Node;
export declare function isEmpty(element: HTMLElement): boolean;
export declare function toBoolean(value: boolean | string): boolean;
export declare function isNonEmptyString(value: any): boolean;
export declare function isTemplateRef(value: any): boolean;
export declare function toNumber<D>(value: number | string, fallback: D): number | D;
export declare function InputBoolean(): any;
export interface NzCalendarI18nInterface {
    today: string;
    now: string;
    backToToday: string;
    ok: string;
    clear: string;
    month: string;
    year: string;
    timeSelect: string;
    dateSelect: string;
    monthSelect: string;
    yearSelect: string;
    decadeSelect: string;
    yearFormat: string;
    monthFormat?: string;
    dateFormat: string;
    dayFormat: string;
    dateTimeFormat: string;
    monthBeforeYear?: boolean;
    previousMonth: string;
    nextMonth: string;
    previousYear: string;
    nextYear: string;
    previousDecade: string;
    nextDecade: string;
    previousCentury: string;
    nextCentury: string;
}