import { Fetcher, Key, SWRConfiguration } from 'swr';
export type SWROptions<Data> = SWRConfiguration<Data, Error, Fetcher<Data, Key>>;
export interface SWRError extends Error {
    status?: number;
}
export type Only<T, U> = {
    [P in keyof T]: T[P];
} & {
    [P in keyof U]?: never;
};
export type Either<T, U> = Only<T, U> | Only<U, T>;