import type { HandleMessageStreamEvent } from "#protocol/message.js";
import { MessageResponse } from "#client/message-response.js";
import type { ClientRedirectPolicy, SendTurnInput, SessionState, StreamOptions } from "#client/types.js";
/**
 * Internal interface that a {@link ClientSession} uses to access client-level
 * configuration without depending on the full {@link Client} class.
 */
interface SessionContext {
    readonly host: string;
    readonly maxReconnectAttempts: number;
    readonly preserveCompletedSessions: boolean;
    readonly redirect?: ClientRedirectPolicy;
    resolveHeaders(perRequest?: Readonly<Record<string, string>>): Promise<Headers>;
}
/**
 * One conversation with an eve agent.
 *
 * A session tracks conversation state (continuation token, session ID, stream
 * cursor) automatically across {@link send} calls. Read the state from
 * the {@link state} getter and serialize it to persist a session.
 */
export declare class ClientSession {
    #private;
    /** @internal */
    constructor(context: SessionContext, state: SessionState);
    /**
     * Current session cursor. Always reflects the latest state after each
     * completed turn. Serialize this to persist and resume later.
     */
    get state(): SessionState;
    /**
     * Sends one turn payload to the agent.
     *
     * Pass a string as shorthand for `{ message }`, or pass an object to submit
     * follow-up text, HITL results, client context, output schema, signal, and
     * headers in a single request.
     */
    send<TOutput = unknown>(input: SendTurnInput<TOutput>): Promise<MessageResponse<TOutput>>;
    /**
     * Opens this session's event stream for the current session ID.
     *
     * Resumes from the session's stored stream cursor unless `options.startIndex`
     * overrides it. The returned iterable reconnects on transient socket
     * disconnects, up to the client's `maxReconnectAttempts`.
     *
     * @throws {Error} If the session has no session ID (no message has been sent
     *   yet).
     */
    stream(options?: StreamOptions): AsyncIterable<HandleMessageStreamEvent>;
}
export {};