export type MeasurementEnvironment = {
    nodeVersion: string;
    platform: string;
    arch: string;
    cpuModel: string | null;
    totalMemoryBytes: number;
    nextVersion: string | null;
    nextLeakVersion: string;
};
/** A report without environment info is not reproducible — capture it once per run. */
export declare function captureEnvironment(nextVersion: string | null): MeasurementEnvironment;