import type { PrototypeStruct } from '../index.js';
export declare function dateIsDate(x: any): boolean;
interface IsDate {
    isDate(x: any): boolean;
}
export declare const isDate: PrototypeStruct;
declare global {
    interface DateConstructor extends IsDate {
    }
}
export {};
//# sourceMappingURL=is-date.d.ts.map