React:关于使用框架无关的util函数操作React状态的问题

import React, { useState } from 'react';

function MyComponent() {
  const [count, setCount] = useState(0);

  const increment = () => {
    setCount(count + 1);
  };

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={increment}>Increment</button>
    </div>
  );
}

import React, { useState, useEffect } from 'react';

function MyComponent() {
  const [count, setCount] = useState(0);

  useEffect(() => {
    console.log('Count changed:', count);
  }, [count]);

  const increment = () => {
    setCount(count + 1);
  };

  return (
    <div>
      <p>Count: {count}</p>
      <button onClick={increment}>Increment</button>
    </div>
  );
}

import React, { useContext } from 'react';

const MyContext = React.createContext();

function MyComponent() {
  const value = useContext(MyContext);

  return (
    <div>
      <p>Value from context: {value}</p>
    </div>
  );
}