"version": "16.14.0",
      "resolved": "https://registry.npmjs.org/react/-/react-16.14.0.tgz",
      "integrity": "sha512-0X2CImDkJGApiAlcf0ODKIneSwBPhqJawOa5wCtKbu7ZECrmS26NvtSILynQ66cgkT/RJ4LidJOc3bUESwmU8g==",

      "version": "17.0.1",
      "resolved": "https://registry.npmjs.org/react/-/react-17.0.1.tgz",
      "integrity": "sha512-lG9c9UuMHdcAexXtigOZLX8exLWkW0Ku29qPRU8uhF2R9BN96dLCt0psvzPLlHc5OWkgymP3qwTRgbnw5BKx3w==",

        "object-assign": "^4.1.1",
        "prop-types": "^15.6.2"

        "object-assign": "^4.1.1"

    "react": "^16.13.1",

    "react": "^17.0.1",

import { Lazy, updaterGenerator } from "./lib/util/misc";

import { assertOnlyCalledOnce, Lazy, updaterGenerator } from "./lib/util/misc";

  const [gameState, setGameState] = useState<GameState>(initialGameState.get());
  // const [gameState, setGameState] = useState<GameState>(() => new GameStateFactory({}).create());

  // const [gameState, setGameState] = useState<GameState>(initialGameState.get());
  const [gameState, setGameState] = useState<GameState>(function factory() {
    // assertOnlyCalledOnce("app useGameState"); // this fails!!
    // return new GameStateFactory({}).create();
    // return null as any;
    return initialGameState.get();
  });