interface DeviceResult {
    device: string;
    updated: boolean;
    restarted: boolean;
    oldVersion?: string;
    newVersion?: string;
    error?: string;
}
interface ClientUpdateResult {
    mode: 'dev' | 'release';
    oldVersion: string | null;
    newVersion: string;
    devices: DeviceResult[];
    duration: number;
}
interface LocalUpdateDeps {
    getInstalledVersion: () => string | null;
    kill: () => Promise<boolean>;
    npmUpdate: () => Promise<string>;
    restart: () => Promise<boolean>;
}
declare function updateClientReleaseLocal(device: string, latestVersion: string, deps: LocalUpdateDeps): Promise<DeviceResult>;
declare function checkAndUpdateClients(): Promise<ClientUpdateResult | null>;
declare function formatUpdateSlackMessage(result: ClientUpdateResult): string;
export { checkAndUpdateClients, formatUpdateSlackMessage, updateClientReleaseLocal };
export type { ClientUpdateResult, DeviceResult, LocalUpdateDeps };