feat: 新增useSharedState

[IVLIU]

[中文版模板 / Chinese template]

🤔 This is a ...

• New feature
• Bug fix
• Site / documentation update
• Demo update
• TypeScript definition update
• Bundle size optimization
• Performance optimization
• Enhancement feature
• Internationalization
• Refactoring
• Code style optimization
• Test Case
• Branch merge
• Other (about what?)

🔗 Related issue link

💡 Background and solution

1. Provide a global state solution other than Context
2. Only re-render when subscription value changes
3. As easy as useState to use

useage

import { createSharedState } from 'ahooks';

// 创建一个全局状态，可以是任何类型的值
const useCount = createSharedState({ value1: 0, value2: 0 });

function Counter() {
  const [count, setCount] = useCount();
  return (
    <>
      <p onClick={() => setCount({
       value1: count.value1 + 1,
       value2: count.value2
     })}>{count.value1}</p>
     <p onClick={() => setCount({
       value1: count.value1,
       value2: count.value2 + 1
     })}>{count.value2}</p>
    </>
 )
}
function Counter2() {
  // 如果只更新value1，那组件不会重新渲染
  const count2 = useCount((state) => state.value2)[0];
  return <p>{count2}</p>
}

📝 Changelog

Language	Changelog
🇺🇸 English	add a new hook createSharedState
🇨🇳 Chinese	新增一个hook createSharedState

☑️ Self Check before Merge

⚠️ Please check all items below before review. ⚠️

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

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[miracles1919]

社区已经有很多成熟的状态管理库了，ahooks 应该不会再造轮子了

[crazylxr]

你的这个 跟这个 issue #1832 是一样的，暂时不会考虑这个哈