import type { PrototypeStruct } from '../index.js';
export declare function numberIsNumber(n: any): n is number;
interface IsNumber {
    isNumber(n: any): boolean;
}
export declare const isNumber: PrototypeStruct;
declare global {
    interface NumberConstructor extends IsNumber {
    }
}
export {};
//# sourceMappingURL=is-number.d.ts.map