feat: #121

Author: Eugene Rodionov

README.md

@@ -27,6 +27,22 @@ Logger **must be** last middleware in chain, otherwise it will log thunk and pro
 createLogger(options?: Object) => LoggerMiddleware
 ```
 
+### Options
+```js
+{
+  level = 'log': 'log' | 'console' | 'warn' | 'error' | 'info', // console's level
+  duration = false: Boolean, // Print the duration of each action?
+  timestamp = true: Boolean, // Print the timestamp with each action?
+  colors: ColorsObject, // Object with color getters. See the ColorsObject interface.
+  logger = window.console: LoggerObject, // Implementation of the `console` API.
+  logErrors = true: Boolean, // Should the logger catch, log, and re-throw errors?
+  collapsed, // Takes a boolean or optionally a function that receives `getState` function for accessing current store state and `action` object as parameters. Returns `true` if the log group should be collapsed, `false` otherwise.
+  predicate, // If specified this function will be called before each action is processed with this middleware.
+  stateTransformer, // Transform state before print. Eg. convert Immutable object to plain JSON.
+  actionTransformer, // Transform state before print. Eg. convert Immutable object to plain JSON.
+  errorTransformer // Transform state before print. Eg. convert Immutable object to plain JSON.
+}
+```
 
 ### Options
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "redux-logger",
-  "version": "2.4.0",
+  "version": "2.5.0",
   "description": "Logger for redux",
   "main": "lib/index.js",
   "scripts": {

src/index.js

@@ -26,7 +26,7 @@ const timer = typeof performance !== `undefined` && typeof performance.now === `
 function createLogger(options = {}) {
   const {
     level = `log`,
-    logger = window.console,
+    logger = console,
     logErrors = true,
     collapsed,
     predicate,