export interface SystemdResult {
    readonly code: number;
    readonly stdout: string;
    readonly stderr: string;
}
export interface SystemdDeps {
    readonly run?: (command: string, args: readonly string[]) => Promise<SystemdResult>;
    readonly journal?: (args: readonly string[]) => Promise<number>;
    readonly isAlive?: (pid: number) => boolean;
    readonly homeDir?: string;
    readonly configDir?: string;
    readonly now?: () => number;
    readonly sleep?: (ms: number) => Promise<void>;
    readonly stdout?: {
        write(text: string): unknown;
    };
    readonly stderr?: {
        write(text: string): unknown;
    };
}
export interface SystemdDefinition {
    readonly identity: string;
    readonly cwd: string;
    readonly argv: readonly string[];
    readonly environment: Readonly<Record<string, string>>;
}
export interface SystemdService {
    readonly loadState: string;
    readonly activeState: string;
    readonly subState: string;
    readonly pid: number;
    readonly startedAt: string;
    readonly enabled: boolean;
    readonly fragmentPath: string;
}
export declare const SYSTEMD_WEB_IDENTITY = "web";
export declare class SystemdUserManagerUnavailableError extends Error {
    readonly name = "SystemdUserManagerUnavailableError";
}
export declare function isSystemdUserManagerUnavailable(error: unknown): boolean;
export declare function systemdUnitName(identity: string): string;
export declare function systemdUnitPath(identity: string, deps?: SystemdDeps): string;
export declare function renderSystemdUnit(definition: SystemdDefinition): string;
export declare function runSystemdTool(command: string, args: readonly string[]): Promise<SystemdResult>;
export declare function inspectSystemd(identity: string, deps?: SystemdDeps): Promise<SystemdService>;
export declare function readSystemdDefinition(identity: string, deps?: SystemdDeps): Promise<SystemdDefinition | undefined>;
export declare function withSystemdLock<T>(identity: string, deps: SystemdDeps, action: () => Promise<T>): Promise<T>;
export declare function stopSystemd(identity: string, deps?: SystemdDeps): Promise<void>;
export declare function startSystemd(definition: SystemdDefinition, restart: boolean, ready: (service: SystemdService) => Promise<boolean>, deps?: SystemdDeps): Promise<void>;
export declare function systemdLogs(identity: string, follow: boolean, lines: number, deps?: SystemdDeps): Promise<number>;
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