import { Context } from "aws-lambda";
import { MetricsListener } from "./listener";
export declare function getVersionTag(): string;
/**
 * Uses process.version to create a runtime tag
 * If a version cannot be identified, returns null
 * See https://docs.aws.amazon.com/lambda/latest/dg/lambda-runtimes.html
 */
export declare function getRuntimeTag(): string | null;
export declare function getEnhancedMetricTags(context?: Context): string[];
export declare function incrementInvocationsMetric(listener: MetricsListener, context: Context): void;
export declare function incrementErrorsMetric(listener: MetricsListener, context?: Context): void;
export declare function incrementBatchItemFailureMetric(listener: MetricsListener, count: number, context: Context): void;
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