@redux-devtools/extension is a package that provides integration with Redux DevTools, a powerful tool for debugging and visualizing the state changes in a Redux application. It allows developers to inspect every action and state change, time travel through states, and even persist states across sessions.

What are @redux-devtools/extension's main functionalities?

Integration with Redux DevTools

This feature allows you to integrate your Redux store with the Redux DevTools extension. By using `composeWithDevTools`, you can enhance your store with DevTools capabilities, making it easier to debug and visualize state changes.

import { createStore } from 'redux';
import { composeWithDevTools } from '@redux-devtools/extension';

const reducer = (state = {}, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return { ...state, count: state.count + 1 };
    default:
      return state;
  }
};

const store = createStore(reducer, composeWithDevTools());

Custom Action Sanitation

This feature allows you to sanitize actions before they are sent to the DevTools. In this example, the `actionSanitizer` function modifies the action type for 'INCREMENT' actions to include '(sanitized)'.

import { createStore } from 'redux';
import { composeWithDevTools } from '@redux-devtools/extension';

const reducer = (state = {}, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return { ...state, count: state.count + 1 };
    default:
      return state;
  }
};

const store = createStore(reducer, composeWithDevTools({
  actionSanitizer: (action) => action.type === 'INCREMENT' ? { ...action, type: 'INCREMENT (sanitized)' } : action
}));

State Serialization

This feature enables state serialization, which is useful for persisting and rehydrating state across sessions. By setting `serialize` to true, the state and actions are serialized before being sent to the DevTools.

import { createStore } from 'redux';
import { composeWithDevTools } from '@redux-devtools/extension';

const reducer = (state = {}, action) => {
  switch (action.type) {
    case 'INCREMENT':
      return { ...state, count: state.count + 1 };
    default:
      return state;
  }
};

const store = createStore(reducer, composeWithDevTools({
  serialize: true
}));

Other packages similar to @redux-devtools/extension

Readme

Source

Redux DevTools Extension's helper

Usage

Install:

yarn add @redux-devtools/extension

and use like that:

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

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

or if needed to apply extension’s options:

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

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

There are just a few lines of code. If you don’t want to allow the extension in production, just use composeWithDevToolsDevelopmentOnly instead of composeWithDevTools.

License

MIT

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Last updated on 08 Dec 2023

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