declare type Subscriber = (state: State) => void;
declare type Waiting = {
    readonly request: Request;
    readonly resolve: (response: Response) => void;
};
declare type Active = {
    readonly url: string;
    readonly startTime: number;
    readonly finishTime: number;
};
declare type History = Active;
export declare type RequestBuilderHelper = (request: Request) => void;
export declare type State = {
    readonly paused: boolean;
    readonly latency: number;
    readonly waiting: ReadonlyArray<Waiting>;
    readonly active: ReadonlyArray<Active>;
    readonly history: ReadonlyArray<History>;
    readonly subscribers: ReadonlyArray<Subscriber>;
    readonly currentTokens: Record<string, string>;
    readonly requestBuilderHelpers: RequestBuilderHelper[];
};
export declare function setAuthenticationBearer(key: string, newToken: string): void;
export declare function addRequestBuilderHelper(requestBuilderHelper: RequestBuilderHelper): void;
export declare function removeRequestBuilderHelper(requestBuilderHelper: RequestBuilderHelper): void;
export declare function fetch(info: RequestInfo, init?: RequestInit): Promise<Response>;
declare function togglePause(): void;
declare function updateLatency(latency: number): void;
declare function startPaused(index: number): void;
declare function subscribe(callback: Subscriber): () => void;
export declare const __internal: {
    state: State;
    togglePause: typeof togglePause;
    updateLatency: typeof updateLatency;
    startPaused: typeof startPaused;
    subscribe: typeof subscribe;
};
export {};