redux源码解读

       // 绑定reducer和state的关系
       import createStore from './createStore'
       // 导出警告函数
       import warning from './utils/warning'
       // 导出自动绑定函数 自动绑定函数，主要生成dispatch(actionCreator(action));
       import bindActionCreators from './bindActionCreators'
       // 导出应用中间件函数,中间件主要作用是将发往reducer的action进行多次修改
       import applyMiddleware from './applyMiddleware'
       /* 合并多个reducer,这样方便每个reducer只处理store的某一个部分数据，最后通过
       * combineReducers函数合并
       */
       import combineReducers from './combineReducers'
       // 将多个函数合并在一起
       import compose from './compose'
  

      function isCrushed() {}
       if (process.env.NODE_ENV !== 'production' && typeof isCrushed.name === 'string' 
        && isCrushed.name !=='isCrushed') {
           warning(
            'You are currently using minified code outside of NODE_ENV === \'production\'. ' +
            'This means that you are running a slower development build of Redux. ' +
            'You can use loose-envify (https://github.com/zertosh/loose-envify) for browserify ' +
            'or DefinePlugin for webpack (http://stackoverflow.com/questions/30030031) ' +
            'to ensure you have the correct code for your production build.'
            )
       }
    

      export {
          createStore,
          compose,
          warning,
          combineReducers,
          bindActionCreators
      }
    

    // 导出warning函数
    export default function warning(message) {
        // 判断console.error函数是否存在且可用
        if (typeof console !== 'undefined' && typeof console.error == 'function') {
            console.error(message);
        }

    }
  

    try {
        // 抛出异常
        throw new Error(Message)
    } catch(e) {
        // 捕获异常
    }