import type { SSESession } from './AbstractSSEController.ts';
export type SSESessionEvent = {
    type: 'connect' | 'disconnect';
    connectionId: string;
    connection?: SSESession;
};
/**
 * Connection spy for testing SSE controllers.
 * Tracks connection and disconnection events separately.
 */
export declare class SSESessionSpy {
    private events;
    private activeConnections;
    private claimedConnections;
    private connectionWaiters;
    private disconnectionWaiters;
    /** @internal Called when a connection is established */
    addConnection(connection: SSESession): void;
    /** @internal Called when a connection is closed */
    addDisconnection(connectionId: string): void;
    /**
     * Wait for a connection to be established.
     *
     * @param options.timeout - Timeout in milliseconds (default: 5000)
     * @param options.predicate - Optional predicate to match a specific connection.
     *   When provided, waits for an unclaimed connection that matches the predicate.
     *   Connections are "claimed" when returned by waitForConnection, allowing
     *   multiple sequential waits for the same URL path.
     *
     * @example
     * ```typescript
     * // Wait for any connection
     * const conn = await spy.waitForConnection()
     *
     * // Wait for a connection with specific URL
     * const conn = await spy.waitForConnection({
     *   predicate: (c) => c.request.url.includes('/api/notifications'),
     * })
     * ```
     */
    waitForConnection(options?: {
        timeout?: number;
        predicate?: (connection: SSESession) => boolean;
    }): Promise<SSESession>;
    /** Wait for a specific connection to disconnect */
    waitForDisconnection(connectionId: string, options?: {
        timeout?: number;
    }): Promise<void>;
    /** Check if a connection is currently active */
    isConnected(connectionId: string): boolean;
    /** Get all connection events in order, optionally filtered by connectionId */
    getEvents(connectionId?: string): SSESessionEvent[];
    /** Clear all events and cancel pending waiters */
    clear(): void;
}