import { Ref, WatchSource } from 'vue';
import SWRVCache from './cache';
import LocalStorageCache from './cache/adapters/localStorage';
export declare type fetcherFn<Data> = (...args: any) => Data | Promise<Data>;
export interface IConfig<Data = any, Fn extends fetcherFn<Data> = fetcherFn<Data>> {
    refreshInterval?: number;
    cache?: LocalStorageCache | SWRVCache<any>;
    dedupingInterval?: number;
    ttl?: number;
    serverTTL?: number;
    revalidateOnFocus?: boolean;
    revalidateDebounce?: number;
    shouldRetryOnError?: boolean | ((err: Error) => boolean);
    errorRetryInterval?: number;
    errorRetryCount?: number;
    fetcher?: Fn;
    isOnline?: () => boolean;
    isDocumentVisible?: () => boolean;
}
export interface revalidateOptions {
    shouldRetryOnError?: boolean | ((err: Error) => boolean);
    errorRetryCount?: number;
    forceRevalidate?: boolean;
}
export interface IResponse<Data = any, Error = any> {
    data: Ref<Data | undefined>;
    error: Ref<Error | undefined>;
    isValidating: Ref<boolean>;
    isLoading: Ref<boolean>;
    mutate: (data?: fetcherFn<Data>, opts?: revalidateOptions) => Promise<void>;
}
export declare type keyType = string | any[] | null | undefined;
export declare type IKey = keyType | WatchSource<keyType>;