import { Callback, Context } from 'aws-lambda';
import { Monitoring } from '../monitoring';
type PromiseHandler<TEvent = unknown, TResult = unknown> = (event: TEvent, context: Context, callback: Callback<TResult>) => Promise<TResult>;
export interface SetupLambdaOptions {
    monitoring?: Monitoring;
    /**
     * Optional close hook for flushing metrics before Lambda returns.
     * Consumers using HttpDDogMetrics pass: () => new Promise(r => metrics.close(r))
     */
    onClose?: () => Promise<void>;
}
/**
 * Register metrics and trace wrapping the handler, this gives our local CLS a new trace ID
 */
export declare function setupLambda<TEvent, TResult>(handler: PromiseHandler<TEvent, TResult>, options?: SetupLambdaOptions): PromiseHandler<TEvent, TResult>;
export {};
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