type BaseEvent<T extends string, Payload extends Record<string, unknown> = {}> = {
    type: T;
    /**
     * The unique identifier for the event
     */
    id: string;
    /**
     * The message to display in the logs for this event, should the implementation choose to display
     * a human-readable message.
     */
    displayMessage: string;
    /**
     * The payload of the event
     */
    payload: Payload;
    /**
     * The timestamp of the event in milliseconds since epoch
     */
    timestamp: number;
};
/**
 * The type of events that can be emitted by an Agent
 */
type ObservabilityEvent = BaseEvent<"state:update", {}> | BaseEvent<"rpc", {
    method: string;
    streaming?: boolean;
}> | BaseEvent<"message:request" | "message:response", {}> | BaseEvent<"message:clear"> | BaseEvent<"schedule:create" | "schedule:execute" | "schedule:cancel", {
    callback: string;
    id: string;
}> | BaseEvent<"destroy"> | BaseEvent<"connect", {
    connectionId: string;
}>;
interface Observability {
    /**
     * Emit an event for the Agent's observability implementation to handle.
     * @param event - The event to emit
     * @param ctx - The execution context of the invocation
     */
    emit(event: ObservabilityEvent, ctx: DurableObjectState): void;
}
/**
 * A generic observability implementation that logs events to the console.
 */
declare const genericObservability: Observability;

export { type Observability, type ObservabilityEvent, genericObservability };