interface NpmCheck {
    latestVersion: string;
    currentVersion: string;
    lastChecked: Date | null;
}
export declare class NpmChecker {
    static check: NpmCheck;
    static initialize(): void;
    /**
     * Checks for updates for the current package
     * @returns {boolean} True if an update is available, false otherwise
     */
    static isUpdateAvailable(): boolean;
    /**
     * Exits the program if an update is available
     * @returns void
     */
    static exitIfUpdateAvailable(): void;
    /**
     * Upgrades the current package to the latest version
     * @returns {boolean} True if the upgrade was successful, false otherwise
     */
    static upgradeIfNotLatestVersion(): boolean;
    private static updateVersions;
    /**
     * Gets spawn options for the current platform
     * @returns Spawn options with shell: true on Windows for proper command resolution
     */
    private static getSpawnOptions;
    private static getCurrentVersion;
    private static getLatestVersion;
    private static ensureEnvironmentsDir;
    private static readVersionFile;
    private static saveVersionFile;
    private static getPackageName;
}
export {};
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