rafUpdateBatcher.js

/*
 * Utility to only call Redux updates in RequestAnimationFrame's
 * Also uses React-dom's batchedUpdates
 */
import raf from 'raf';
import { unstable_batchedUpdates as batchedUpdates } from 'react-dom';

let rafID;
let notifyFunc;
function animFrame() {
  if (notifyFunc) {
    batchedUpdates(notifyFunc);
    notifyFunc = null;
  }
  rafID = raf(animFrame);
}
export default function rafUpdateBatcher(notify) {
  if (rafID === undefined) rafID = raf(animFrame);
  notifyFunc = notify;
}