export type FirmwareStatus = 'Idle' | 'Downloading' | 'Downloaded' | 'Installing' | 'Installed' | 'DownloadFailed' | 'InstallationFailed';
export type FirmwareFailureStage = 'download' | 'install' | null;
export type FirmwareSchedule = {
    downloadMs: number;
    installMs: number;
};
export type FirmwareJob = {
    location: string;
    retrieveDate: Date;
    schedule?: Partial<FirmwareSchedule>;
    failStage?: FirmwareFailureStage;
    version?: string;
    retries?: number;
    retryIntervalMs?: number;
};
export type FirmwareManagerOptions = {
    schedule: FirmwareSchedule;
    onStatus: (status: Exclude<FirmwareStatus, 'Idle'>) => Promise<void> | void;
    onInstalled: (version: string) => void;
    onVersionResolve: (location: string) => string;
};
export declare class FirmwareManager {
    private readonly options;
    private state;
    private busy;
    private timers;
    private schedule;
    constructor(options: FirmwareManagerOptions);
    getState(): FirmwareStatus;
    setSchedule(overrides: Partial<FirmwareSchedule>): void;
    start(job: FirmwareJob): boolean;
    private scheduleTransition;
    private clearTimers;
}