export declare function defaultValue<T>(value: T | undefined, defaultValue?: T): T;
export declare function deleteUndefined<T extends Record<string, unknown>>(obj: T): T;
export declare function deleteEmpty<T extends Record<string, unknown>>(obj: T): T;
export declare const isStatusOk: (status: number) => boolean;
export declare function plural(count: number, singular: string, plural?: string): string;