import type { NotUndefined } from "../typings";
interface Options {
    componentName: string;
    propName: string;
    errorHandler?: () => string;
    notNullable?: boolean;
}
declare type R<T1, T2> = T2 extends undefined ? T1 | undefined : NotUndefined<T1 | T2>;
declare const useConstantProp: <T1, T2>(initialValue: T1, defaultValue: T2, options: Options) => R<T1, T2>;
export default useConstantProp;