From af474ba34cb3aae31c418228561f6e23a4b66bb2 Mon Sep 17 00:00:00 2001
From: Dan Abramov <dan.abramov@gmail.com>
Date: Wed, 22 Jul 2015 19:53:40 +0300
Subject: [PATCH] Inline composeMiddleware because it is not used outside
 applyMiddleware

---
 src/utils/applyMiddleware.js   | 18 +++++-------------
 src/utils/composeMiddleware.js | 13 -------------
 2 files changed, 5 insertions(+), 26 deletions(-)
 delete mode 100644 src/utils/composeMiddleware.js

diff --git a/src/utils/applyMiddleware.js b/src/utils/applyMiddleware.js
index 2cb09f9b47..0f320f293e 100644
--- a/src/utils/applyMiddleware.js
+++ b/src/utils/applyMiddleware.js
@@ -1,5 +1,4 @@
 import compose from './compose';
-import composeMiddleware from './composeMiddleware';
 
 /**
  * Creates a higher-order store that applies middleware to a store's dispatch.
@@ -11,22 +10,15 @@ import composeMiddleware from './composeMiddleware';
 export default function applyMiddleware(...middlewares) {
   return (next) => (reducer, initialState) => {
     var store = next(reducer, initialState);
-    var middleware = composeMiddleware(...middlewares);
-    var composedDispatch = () => {};
-
-    function dispatch(action) {
-      return composedDispatch(action);
-    }
+    var dispatch = store.dispatch;
+    var chain = [];
 
     var middlewareAPI = {
       getState: store.getState,
-      dispatch
+      dispatch: (action) => dispatch(action)
     };
-
-    composedDispatch = compose(
-      middleware(middlewareAPI),
-      store.dispatch
-    );
+    chain = middlewares.map(middleware => middleware(middlewareAPI));
+    dispatch = compose(...chain, store.dispatch);
 
     return {
       ...store,
diff --git a/src/utils/composeMiddleware.js b/src/utils/composeMiddleware.js
deleted file mode 100644
index 98927a21b5..0000000000
--- a/src/utils/composeMiddleware.js
+++ /dev/null
@@ -1,13 +0,0 @@
-import compose from './compose';
-
-/**
- * Compose middleware from left to right
- * @param  {...Function} middlewares
- * @return {Function}
- */
-export default function composeMiddleware(...middlewares) {
-  return args => rawDispatch => {
-    var dispatchChain = middlewares.map(middleware => middleware(args));
-    return compose(...dispatchChain, rawDispatch);
-  };
-}