import * as gracely from "gracely";
import * as authly from "authly";
import "isomorphic-fetch";
import { Storage } from "./Storage";
export declare class Connection {
    onError?: (error: gracely.Error, request: RequestInit) => Promise<boolean>;
    onUnauthorized?: (connection: Connection) => Promise<boolean>;
    readonly continuation: Record<string, string | undefined>;
    private constructor();
    private fetch;
    get<Response>(path: string, header?: HeadersInit & {
        accept?: string | undefined;
    }, continuationName?: string, continuation?: boolean): Promise<Response | gracely.Error>;
    post<Response>(path: string, request: any, header?: HeadersInit & {
        accept?: string | undefined;
    }): Promise<Response | gracely.Error>;
    put<Response>(path: string, request: any, header?: HeadersInit & {
        accept?: string | undefined;
    }): Promise<Response | gracely.Error>;
    patch<Response>(path: string, request: any, header?: HeadersInit & {
        accept?: string | undefined;
    }): Promise<Response | gracely.Error>;
    delete<Response>(path: string, header?: HeadersInit & {
        accept?: string | undefined;
    }): Promise<Response | gracely.Error>;
    private static storageValue;
    static get storage(): Storage | undefined;
    static get app(): string | undefined;
    private static urlValue;
    static get url(): string | undefined;
    static set url(value: string | undefined);
    private static keyValue;
    static get key(): string | undefined;
    static set key(value: string | undefined);
    static readonly keyChanged: ((key: authly.Token | undefined) => void)[];
    private handleNoContentResponses;
    static open(url: string, key: string): Connection;
    static open(url?: string, key?: string): Connection | undefined;
}