react_hooks_but_not_broken.js

'use strict';

const stateMap = new WeakMap();
function useState(key, init) {
  const update = (v) => stateMap.set(key, v);
  if (stateMap.has(key)) {
    return [stateMap.get(key), update];
  }
  stateMap.set(key, init);
  return [init, update];
}

for (let i = 0; i < 10; i += 1) {
  const [count, setCount] = useState`${0}`;
  console.log(count);
  setCount(count + 1);
}