import { type ChainMap, EthJsonRpcBlockParameterTag, type Token } from '@hyperlane-xyz/sdk';
import { WrappedError } from '../utils/errors.js';
export declare class MonitorStartError extends WrappedError {
    name: string;
}
export declare class MonitorPollingError extends WrappedError {
    name: string;
}
export declare enum MonitorEventType {
    TokenInfo = "TokenInfo",
    Error = "Error",
    Start = "Start"
}
export type ConfirmedBlockTag = number | EthJsonRpcBlockParameterTag | undefined;
export type ConfirmedBlockTags = ChainMap<ConfirmedBlockTag>;
export type MonitorEvent = {
    tokensInfo: {
        token: Token;
        bridgedSupply?: bigint;
    }[];
    confirmedBlockTags: ConfirmedBlockTags;
    inventoryBalances?: ChainMap<bigint>;
};
/**
 * Interface for a monitoring service that tracks token information across different chains.
 */
export interface IMonitor {
    /**
     * Allows subscribers to listen to hyperlane's tokens info.
     * Handler can be async - Monitor will await it before starting next cycle.
     */
    on(eventName: MonitorEventType.TokenInfo, fn: (event: MonitorEvent) => void | Promise<void>): this;
    /**
     * Allows subscribers to listen to error events.
     */
    on(eventName: MonitorEventType.Error, fn: (event: Error) => void): this;
    /**
     * Allows subscribers to listen to start events.
     */
    on(eventName: MonitorEventType.Start, fn: () => void): this;
    /**
     * Starts the monitoring long-running process.
     */
    start(): Promise<void>;
    /**
     * Stops the monitoring long-running process.
     */
    stop(): void;
}
//# sourceMappingURL=IMonitor.d.ts.map