import { EventEmitter } from "eventemitter3";
export type EventName = "message" | "connect" | "disconnect" | "accountsChanged" | "chainChanged";
type ProviderMessage = {
    readonly type: string;
    readonly data: unknown;
};
type ProviderConnectInfo = {
    readonly chainId: string;
};
export type EventCallbackByEventName = {
    message: (message: ProviderMessage) => void;
    connect: (connectInfo: ProviderConnectInfo) => void;
    disconnect: () => void;
    accountsChanged: (accounts: string[]) => void;
    chainChanged: (chainId: string) => void;
};
export declare const emitter: EventEmitter<string | symbol, any>;
type EventMessage = {
    event: EventName;
    data?: unknown;
};
export declare const isEventMessage: (message: unknown) => message is EventMessage;
export {};
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