import type { NetworkId } from "./chains/index.js";
import type { Alert, Receipt, SessionActiveEvent, SessionBudgetSnapshot, SessionExpiredEvent, SessionInvalidReason } from "./types/index.js";
export interface BudgetEvent {
    userAddress: string | null;
    network: NetworkId | null;
    snapshot: SessionBudgetSnapshot;
    requestId: string | null;
}
export interface SessionInvalidEvent {
    userAddress: string | null;
    network: NetworkId | null;
    reason: SessionInvalidReason;
    requestId: string | null;
}
export interface ReceiptEvent {
    userAddress: string | null;
    network: NetworkId | null;
    receipt: Receipt;
    requestId: string | null;
    source: "response-header" | "stream" | "body";
}
export interface EventMap {
    budget: BudgetEvent;
    sessionInvalid: SessionInvalidEvent;
    sessionActive: SessionActiveEvent;
    sessionExpired: SessionExpiredEvent;
    receipt: ReceiptEvent;
    alert: Alert;
}
export type EventName = keyof EventMap;
export type EventListener<E extends EventName> = (event: EventMap[E]) => void | Promise<void>;
export interface EventBus {
    on<E extends EventName>(event: E, listener: EventListener<E>): () => void;
    once<E extends EventName>(event: E, listener: EventListener<E>): () => void;
    off<E extends EventName>(event: E, listener: EventListener<E>): void;
    emit<E extends EventName>(event: E, payload: EventMap[E]): void;
}
interface InternalBusOptions {
    logger?: {
        warn?: (msg: string, meta?: Record<string, unknown>) => void;
        error?: (msg: string, meta?: Record<string, unknown>) => void;
    };
}
export declare function createEventBus(options?: InternalBusOptions): EventBus;
export {};
//# sourceMappingURL=events.d.ts.map