import type { AwsCredentialIdentityProvider } from '@smithy/types';
type IoTMessageBase = {
    workerId: string;
    requestId: string;
    functionId: string;
};
export type FuctionRequest = {
    deadline: number;
    event: any;
    context: any;
    env: {
        [key: string]: string | undefined;
    };
} & IoTMessageBase;
export type FunctionResponse = {
    body: any;
} & IoTMessageBase;
export type FunctionErrorResponse = {
    errorType: string;
    errorMessage: string;
    trace?: string;
} & IoTMessageBase;
export type FunctionPing = IoTMessageBase;
/**
 * IoT Message that is exchanged between the Lambda and local worker
 */
export type IoTMessage = {
    type: 'INVOKE';
    data: FuctionRequest;
} | {
    type: 'SUCCESS';
    data: FunctionResponse;
} | {
    type: 'ERROR';
    data: FunctionErrorResponse;
} | {
    type: 'PING';
    data: FunctionPing;
};
export type IoTMessageTypes = IoTMessage['type'];
/**
 * IoT Service Connection with an method to publish messages
 */
export type IoTServiceConnection = {
    publish: (payload: IoTMessage, topic: string) => Promise<void>;
};
/**
 * Connect to IoT
 * @param props
 * @returns
 */
declare function connect(props?: {
    onMessage?: (message: IoTMessage) => void;
    topic?: string;
    region?: string;
    credentialsProvider?: AwsCredentialIdentityProvider;
}): Promise<IoTServiceConnection>;
export declare const IoTService: {
    connect: typeof connect;
};
export {};