export interface IRequestParams {
    [key: string]: any;
}
export declare type ErrorHandler = (options: IRequestOptions, response: any, error?: any) => boolean;
export declare type SuccessHandler = (ret: any) => Promise<any>;
export declare type requestCb = (options: IRequestOptions) => void;
export declare type CredentialType = 'same-origin' | 'include';
export declare type MethodType = 'GET' | 'POST' | 'PUT' | 'DELETE' | 'PATCH';
export declare type requestSuccessCheckFn = (statusCode: number) => boolean;
export interface IRequestOptions {
    path: string;
    method?: MethodType;
    url?: string;
    credentials?: CredentialType;
    query?: IRequestParams;
    data?: IRequestParams;
    headers?: any;
    onError?: ErrorHandler;
    timeout?: number;
    loading?: boolean;
}
declare type APIGetter = () => string;
declare type CredentialGetter = () => CredentialType;
declare type HeaderGetter = () => any;
declare type TimeoutGetter = () => number;
export default class Request {
    static genQuery(params?: IRequestParams): string;
    static setDefaultCheckRequestSuccessFn(cb: requestSuccessCheckFn): void;
    static setDefaultStartRequestCb(cb: requestCb): void;
    static setDefaultEndRequestCb(cb: requestCb): void;
    static setDefaultSuccessHandler(onSuccess: SuccessHandler): void;
    static setDefaultErrorHandler(onError: ErrorHandler): void;
    static setDefaultHeader(name: string, value: any | HeaderGetter): void;
    static setDefaultCredential(credentials: CredentialType | CredentialGetter): void;
    static setDefaultAPIHost(apiHost: string | APIGetter): void;
    static setDefaultTimeout(timeout: number | TimeoutGetter): void;
    static request(opts: IRequestOptions, isDownload?: boolean): Promise<[Error | null, any]>;
    static get(opts: IRequestOptions): Promise<[Error | null, any]>;
    static post(opts: IRequestOptions): Promise<[Error | null, any]>;
    static postForm(opts: IRequestOptions): Promise<[Error | null, any]>;
    static delete(opts: IRequestOptions): Promise<[Error | null, any]>;
    static put(opts: IRequestOptions): Promise<[Error | null, any]>;
    static patch(opts: IRequestOptions): Promise<[Error | null, any]>;
    static upload(opts: IRequestOptions): Promise<[Error | null, any]>;
    static download(opts: IRequestOptions, filename?: string): Promise<[Error | null, unknown]>;
}
export {};