import '../../assert/js/assert.js';
import '../../globals.js';
import Sim from './Sim.js';
declare const Heartbeat: {
    /**
     * Initializes the heartbeat div to begin ticking to prevent Safari from going to sleep.
     */
    start: (sim: Sim) => void;
};
export default Heartbeat;
//# sourceMappingURL=Heartbeat.d.ts.map