silphius/app/react/context/ecs.js

import {createContext, useCallback, useContext} from 'react';

import {usePacket} from './client.js';

const context = createContext();

export default context;

export function useEcs() {
  return useContext(context);
}

export function useEcsTick(fn) {
  const [ecs] = useEcs();
  const memo = useCallback((payload) => {
    if (!ecs) {
      return;
    }
    fn(payload, ecs);
  }, [ecs, fn]);
  usePacket(':Ecs', memo);
}