在使用了最新版的函数组件hooks后，刚开始导入mobx，总是报cant resolve "src/store/index"这种错误，然后我就开始一步一步找原因，后来在组件中log了一下store，重新启动程序后，就没问题了，我也是无语.....

下面看一下taro使用react函数组件接入mobx的流程：

先在store下面创建一个counter.ts:

import { observable } from "mobx";

const counterStore = observable({
  counter: 100,
  addStore() {
    this.counter++;
  },
  increment() {
    this.counter++;
  },
  decrement() {
    this.counter--;
  },
  incrementAsync() {
    setTimeout(() => {
      this.counter++;
    }, 1000);
  },
});

export default counterStore;

然后再创建一个store/index.ts：

import React from "react";
import counterStore from "./counter";

const storesContext = React.createContext({
  counterStore,
});

// 默认导出
export default storesContext;

然后看一下我的app.tsx：

import { Component, PropsWithChildren } from "react";
import "./app.scss";

class App extends Component<PropsWithChildren> {
  componentDidMount() {}

  componentDidShow() {}

  componentDidHide() {}

  // this.props.children 就是要渲染的页面
  render() {
    return this.props.children;
  }
}

export default App;

然后开始在组件中使用这个mobx状态管理： 

import { useContext, useEffect, useState } from "react";
import { View, Button, Text } from "@tarojs/components";
import { observer } from "mobx-react";
import Store from "../../store/index";
import "./index.scss";

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

  const { counterStore } = useContext(Store);

  useEffect(() => {
    console.log("store", counterStore);
  });

  // 点击按钮改变store状态
  const handleClick = () => {
    // 修改mobx中的数据状态
    counterStore.addStore();
    // 修改组件中的数据状态
    setCount(count + 1);
  };

  return (
    <View>
      <Text>
        函数组件状态：{count} || mobx中的状态: {counterStore.counter}
      </Text>
      <Button onClick={() => handleClick()}>+1</Button>
    </View>
  );
}

export default observer(Index);

最后点击即可实现状态控制：