import { PropsWithChildren } from 'react';
export type Authorizer<User> = (user?: User) => boolean;
export type Props<User> = {
    authorizer: Authorizer<User>;
};
export declare function IsAuthorized<User>({ authorizer, children }: PropsWithChildren<Props<User>>): string | number | bigint | boolean | Iterable<import("react").ReactNode> | Promise<string | number | bigint | boolean | import("react").ReactElement<unknown, string | import("react").JSXElementConstructor<any>> | import("react").ReactPortal | Iterable<import("react").ReactNode> | null | undefined> | import("react").JSX.Element;