HMR with graphics and reducer

if(module.hot) {
    module.hot.accept(() => {
        window.store.replaceReducer(reducer)
        window.cancelAnimationFrame(window.raf);
        window.raf = window.requestAnimationFrame(step)
    });
}

function step(dt) {
    graphics(window.ctx, window.store.getState(), dt);
    window.requestAnimationFrame(step);
};