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111 lines
5.2 KiB
Markdown
111 lines
5.2 KiB
Markdown
Redux DevTools
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=========================
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A live-editing time travel environment for [Redux](https://github.com/rackt/redux).
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**[See Dan's React Europe talk demoing it!](http://youtube.com/watch?v=xsSnOQynTHs)**
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[](https://travis-ci.org/gaearon/redux-devtools)
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[](https://www.npmjs.com/package/redux-devtools)
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[](https://www.npmjs.com/package/redux-devtools)
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[](https://discord.gg/0ZcbPKXt5bWb10Ma)
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### Features
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* Lets you inspect every state and action payload
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* Lets you go back in time by “cancelling” actions
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* If you change the reducer code, each “staged” action will be re-evaluated
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* If the reducers throw, you will see during which action this happened, and what the error was
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* With `persistState()` store enhancer, you can persist debug sessions across page reloads
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### Overview
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Redux DevTools is a development time package that provides power-ups for your Redux development workflow. Be careful to strip its code in production! To use Redux DevTools, you need to choose a “monitor”—a React component that will serve as a UI for the DevTools. Different tasks and workflows require different UIs, so Redux DevTools is built to be flexible in this regard. We recommend using [`LogMonitor`](https://github.com/gaearon/redux-devtools-log-monitor) for inspecting the state and time travel, and wrap it in a [`DockMonitor`](https://github.com/gaearon/redux-devtools-dock-monitor) to quickly move it across the screen. That said, when you’re comfortable rolling up your own setup, feel free to do this, and share it with us.
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### Chrome Extension
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If you don’t want to bother with installing Redux DevTools and integrating it into your project, consider using [Redux DevTools Chrome Extension](https://github.com/zalmoxisus/redux-devtools-extension). It provides access to the most popular monitors, is easy to configure to filter actions, and doesn’t require installing any packages.
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### Walkthrough
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Read the [walkthrough](./docs/Walkthrough.md) for the integration instructions.
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### Running Examples
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Clone the project:
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```
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git clone https://github.com/gaearon/redux-devtools.git
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cd redux-devtools
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```
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Run `npm install` in the root folder:
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```
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npm install
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```
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Now you can open an example folder and run `npm install` there:
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```
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cd examples/counter # or examples/todomvc
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npm install
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```
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Finally, run the development server and open the page:
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```
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npm start
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open http://localhost:3000
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```
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Try clicking on actions in the log, or changing some code inside the reducers. You should see the action log re-evaluate the state on every code change.
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Also try opening `http://localhost:3000/?debug_session=123`, click around, and then refresh. You should see that all actions have been restored from the local storage.
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### Custom Monitors
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**DevTools accepts monitor components so you can build a completely custom UI.** [`LogMonitor`](https://github.com/gaearon/redux-devtools-log-monitor) and [`DockMonitor`](https://github.com/gaearon/redux-devtools-dock-monitor) are just examples of what is possible.
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**[I challenge you to build a custom monitor for Redux DevTools!](https://github.com/gaearon/redux-devtools/issues/3)**
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Some crazy ideas for custom monitors:
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* A slider that lets you jump between computed states just by dragging it
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* An in-app layer that shows the last N states right in the app (e.g. for animation)
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* A time machine like interface where the last N states of your app reside on different Z layers
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* Feel free to come up with and implement your own! Check [`LogMonitor`](https://github.com/gaearon/redux-devtools-log-monitor) `propTypes` to see what you can do.
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In fact some of these are implemented already:
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#### [Slider Monitor](https://github.com/calesce/redux-slider-monitor)
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#### [Diff Monitor](https://github.com/whetstone/redux-devtools-diff-monitor)
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#### [Filterable Log Monitor](https://github.com/bvaughn/redux-devtools-filterable-log-monitor/)
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#### [Chart Monitor](https://github.com/romseguy/redux-devtools-chart-monitor)
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#### [Filter Actions](https://github.com/zalmoxisus/redux-devtools-filter-actions)
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(Does not have a UI but can wrap any other monitor)
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<img src='http://i.imgur.com/TlqnU0J.png' width='400'>
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#### Keep them coming!
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Create a PR to add your custom monitor.
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### License
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MIT
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