Memory leak

I’m sure an example can be simplified, but somewhere between 0.0.7 and 0.0.10 memory leak were introduced.

import React from "react";
import { RecoilRoot, useSetRecoilState, atom, useRecoilValue } from "recoil";

const state = atom({
  key: "test",
  default: []
});

const Subscriber = () => {
  const setTest = useSetRecoilState(state);

  React.useEffect(() => {
    const u = old => {
      const item = Math.random();

      if (old.length >= 5000) {
        return [item, ...old.slice(0, -1)];
      } else {
        return [item, ...old];
      }
    };

    const t = () => setTest(u);
    setInterval(t, 10);
  }, []);

  return null;
};

const Test = () => {
  const test = useRecoilValue(state);
  return <div>{test.length}</div>;
};

export default function App() {
  console.log("render");
  return (
    <RecoilRoot>
      <Subscriber />
      <Test />
    </RecoilRoot>
  );
}

Codesandbox:
0.0.10: code, demo
0.0.7: code, demo

Sandbox with 0.0.7 version doesn’t have memory leak, as you might see here (app run about 2 minutes between heap snapshots). 0.0.10: 0.0.7:

[drarmstr]

We’re finalizing some changes for Concurrent Mode now, then can try to investigate this before the next release.

[drarmstr]

@saltycrane - Thank you for the reproducer.