Merge pull request #5 from willmorgan/features/add-dispatch-and-action

Provide dispatch and lastAction parameters to errorHandler

Author: sergiodxa

README.md

@@ -10,9 +10,11 @@ import reduxCatch from 'redux-catch';
 
 import reducer from './reducer';
 
-function errorHandler(error, getState) {
+function errorHandler(error, getState, dispatch, lastAction) {
   console.error(error);
   console.debug('current state', getState());
+  console.debug('last action was', lastAction);
+  // optionally dispatch an action due to the error using the dispatch param
 }
 
 const store = createStore(reducer, applyMiddleware(

index.js

@@ -5,7 +5,7 @@ function middlewareFactory(errorHandler) {
         try {
           return next(action);
         } catch (error) {
-          errorHandler(error, store.getState);
+          errorHandler(error, store.getState, store.dispatch, action);
           return error;
         }
       };

test.js

@@ -5,18 +5,25 @@ const mockedMiddlewareAPI = {
   getState: function getState() {
     return 'test';
   },
+  dispatch: function dispatch() {
+    return dispatch;
+  }
 };
 
 const baseError = new Error('There was an error.');
 
+const errorAction = {
+  type: 'ERROR',
+};
+
 function errorCase(t) {
   function mockedNext() {
     throw baseError;
   }
 
-  t.plan(3);
+  t.plan(5);
 
-  function errorHandler(error, getState) {
+  function errorHandler(error, getState, dispatch, action) {
     t.ok(
       error.message === baseError.message,
       'it should receive the expected error message in the `errorHandler`'
@@ -25,9 +32,17 @@ function errorCase(t) {
       getState() === 'test',
       'it should get the expected state from `getState()`'
     );
+    t.ok(
+      dispatch === mockedMiddlewareAPI.dispatch,
+      'dispatch should be passed to the handler'
+    );
+    t.ok(
+      action === errorAction,
+      'it should pass through the action to the handler'
+    );
   }
 
-  const error = middleware(errorHandler)(mockedMiddlewareAPI)(mockedNext)();
+  const error = middleware(errorHandler)(mockedMiddlewareAPI)(mockedNext)(errorAction);
 
   t.ok(
     error.message === baseError.message,