import { EventEmitter } from 'eventemitter3';
import Docker from 'dockerode';
interface Events {
    numberImagesToRemove(n: number): void;
    gcRunTime(duration: number): void;
    imageRemoved(removalType: string): void;
    spaceReclaimed(reclaimSpace: number): void;
    imageRemovalError(statusCode: string): void;
}
type Metrics = EventEmitter<Events>;
export default class DockerGC {
    metrics: Metrics;
    private host;
    private docker;
    private dockerProgress;
    private currentMtimes;
    private baseImagePromise;
    private mtimeStream;
    setHostname(hostname: string): void;
    setDocker(hostObj: Docker.DockerOptions): Promise<void>;
    minDelayMs: number;
    maxDelayMs: number;
    private restartMtimeStream;
    setupMtimeStream(): Promise<void>;
    destroyMtimeStream(): void;
    private removeImage;
    private tryRemoveImageBy;
    garbageCollect(reclaimSpace: number, attemptAll?: boolean): Promise<void>;
    private getOutput;
    getDaemonFreeSpace(): Promise<{
        used: number;
        total: number;
        free: number;
    }>;
    private getDaemonArchitecture;
}
export {};