有句代码里，包含了2个箭头=> 请问该怎么理解

Question

function applyMiddleware(...middlewares) {
    return (createStore) => (reducer, preloadedState, enhancer) => {
      return {

      }
    }
  }

如上，看了就蒙圈了。。。哪位大神能详细解释一下哈

Answer 1

function applyMiddleware(...middlewares) {
    return function (creareStore) {
        return function (reducer, preloadedState, enhancer) {
            return {}
        }
    }
}