/**
 * Emit an EMF event with the versions of the CLI, library, toolkit-lib and cdk-assets that were used to run the tests.
 *
 * The version numbers are first scalarized so that they can be graphed, and the CodeBuild Project Name is used as
 * a dimension to keep different test runs in the same account separate.
 *
 * The way EMF works, if CloudWatch sees a log message like this it will
 * automatically emit metric data from these fields.
 */
export declare function emitVersionsEmf(versions: Versions): void;
export declare function createVersionsEmf(versions: Versions): {
    _aws: {
        Timestamp: number;
        CloudWatchMetrics: {
            Namespace: string;
            Dimensions: string[][];
            Metrics: {
                Name: string;
            }[];
        }[];
    };
    ProjectName: string;
    CliVersion: number;
    LibraryVersion: number;
    ToolkitLibVersion: number;
    CdkAssetsVersion: number;
    TestsVersion: number;
};
export interface Versions {
    readonly cli: string;
    readonly library: string;
    readonly toolkitLib: string;
    readonly cdkAssets: string;
    readonly tests: string;
}