import { JsonSerializable, XApiActor, XApiStatement } from "./statement";
export interface LrsConfig {
    endpoint: string;
    auth: string;
}
export declare type XApiState = JsonSerializable;
export declare const VERSION = "1.0.2";
export declare class Lrs {
    endpoint: string;
    auth: string;
    constructor(config: LrsConfig);
    sendStatement(statement: XApiStatement, keepalive?: boolean): Promise<Response>;
    saveActivityState(activityId: string, stateId: string, agent: XApiActor, state: XApiState, registration?: string): Promise<Response>;
    retrieveActivityState(activityId: string, stateId: string, agent: XApiActor, registration?: string): Promise<Response>;
}