Redux DevTools Extension

Installation

1. For Chrome

• from Chrome Web Store;
• or build it with npm i && npm run build:extension and load the extension's folder ./build/extension;
• or run it in dev mode with npm i && npm start and load the extension's folder ./dev.

2. For Firefox

• from Mozilla Add-ons;
• or build it with npm i && npm run build:firefox and load the extension's folder ./build/firefox (just select a file from inside the dir).

3. For Electron

• just specify REDUX_DEVTOOLS in electron-devtools-installer.

4. For other browsers and non-browser environment

• use remote-redux-devtools.

Usage

Note that starting from v2.7, window.devToolsExtension was renamed to window.__REDUX_DEVTOOLS_EXTENSION__ / window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__.

1. With Redux

1.1 Basic store

For a basic Redux store simply add:

 const store = createStore(
   reducer, /* preloadedState, */
+  window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
 );

Note that preloadedState argument is optional in Redux' createStore.

For universal ("isomorphic") apps, prefix it with typeof window !== 'undefined' &&.

In case ESLint is configured to not allow using the underscore dangle, wrap it like so:

+ /* eslint-disable no-underscore-dangle */
  const store = createStore(
   reducer, /* preloadedState, */
   window.__REDUX_DEVTOOLS_EXTENSION__ && window.__REDUX_DEVTOOLS_EXTENSION__()
  );
+ /* eslint-enable */

Note: Passing enhancer as last argument requires redux@>=3.1.0. For older versions apply it like here or here. Don't mix the old Redux API with the new one.

You don't need to npm install redux-devtools when using the extension (that's a different lib).

1.2 Advanced store setup

If you setup your store with middleware and enhancers, change:

  import { createStore, applyMiddleware, compose } from 'redux';

+ const composeEnhancers = window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ || compose;
+ const store = createStore(reducer, /* preloadedState, */ composeEnhancers(
- const store = createStore(reducer, /* preloadedState, */ compose(
    applyMiddleware(...middleware)
  ));

Note that when the extension is not installed, we’re using Redux compose here.

To specify extension’s options, use it like so:

const composeEnhancers =
  typeof window === 'object' &&
  window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__ ?   
    window.__REDUX_DEVTOOLS_EXTENSION_COMPOSE__({
      // Specify extension’s options like name, actionsBlacklist, actionsCreators, serialize...
    }) : compose;

const enhancer = composeEnhancers(
  applyMiddleware(...middleware),
  // other store enhancers if any
);
const store = createStore(reducer, enhancer);

See the post for more details.

1.3 Use redux-devtools-extension package from npm

To make things easier, there's an npm package to install:

npm install --save redux-devtools-extension

and to use like so:

import { createStore, applyMiddleware } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension';

const store = createStore(reducer, composeWithDevTools(
  applyMiddleware(...middleware),
  // other store enhancers if any
));

To specify extension’s options:

import { createStore, applyMiddleware } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension';

const composeEnhancers = composeWithDevTools({
  // Specify here name, actionsBlacklist, actionsCreators and other options if needed
});
const store = createStore(reducer, /* preloadedState, */ composeEnhancers(
  applyMiddleware(...middleware),
  // other store enhancers if any
));

There’re just few lines of code added to your bundle.

In case you don't include other enhancers and middlewares, just use devToolsEnhancer:

import { createStore } from 'redux';
import { devToolsEnhancer } from 'redux-devtools-extension';

const store = createStore(reducer, /* preloadedState, */ devToolsEnhancer(
  // Specify here name, actionsBlacklist, actionsCreators and other options if needed
));

1.5 Using in production

It's useful to include the extension in production as well. Usually you can use it as for development.

If you want to restrict it there, use redux-devtools-extension/logOnlyInProduction:

import { createStore } from 'redux';
import { devToolsEnhancer } from 'redux-devtools-extension/logOnlyInProduction';

const store = createStore(reducer, /* preloadedState, */ devToolsEnhancer(
  // options like actionSanitizer, stateSanitizer
));

or with middlewares and enhancers:

import { createStore, applyMiddleware } from 'redux';
import { composeWithDevTools } from 'redux-devtools-extension/logOnlyInProduction';

const composeEnhancers = composeWithDevTools({
  // options like actionSanitizer, stateSanitizer
});
const store = createStore(reducer, /* preloadedState, */ composeEnhancers(
  applyMiddleware(...middleware),
  // other store enhancers if any
));

You'll have to add 'process.env.NODE_ENV': JSON.stringify('production') in your Webpack config for the production bundle (to envify). If you use create-react-app, it already does it for you.

If you're already checking process.env.NODE_ENV when creating the store, include redux-devtools-extension/logOnly for production enviroment.

If you don’t want to allow the extension in production, just use redux-devtools-extension/developmentOnly.

See the article for more details.

1.6 For React Native, hybrid, desktop and server side Redux apps

Include Remote Redux DevTools's store enhancer, and from the extension's context menu choose 'Open Remote DevTools' for remote monitoring.

2. Without Redux

See integrations and the blog post for more details on how to use the extension with any architecture.

Docs

• Options (arguments)
• Methods (advanced API)
• Create Redux store for debugging.
• FAQ
• Troubleshooting
• Articles
• Videos
• Feedback

Demo

Live demos to use the extension with:

• Counter
• TodoMVC
• Redux Form
• React Tetris
• Book Collection (Angular ngrx store)

Also see ./examples folder.

Backers

Support us with a monthly donation and help us continue our activities. [Become a backer]

Sponsors

Become a sponsor and get your logo on our README on Github with a link to your site. [Become a sponsor]

License

MIT

Created By

If you like this, follow @mdiordiev on twitter.