export interface InstallOptions {
    /** Cron-like spec: "*\/30 * * * *" or shorthand like "every:30m". Default: every 30 min. */
    schedule?: string;
    /** Path to the `lisa` binary; auto-detected if omitted. */
    binPath?: string;
    /** macOS only: load the plist immediately. */
    load?: boolean;
}
export declare function installHeartbeat(opts?: InstallOptions): Promise<{
    platform: string;
    instructions: string;
    written?: string;
}>;
export declare function uninstallHeartbeat(): Promise<string>;
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