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https://github.com/facebook/flipper

A desktop debugging platform for mobile developers.
https://github.com/facebook/flipper

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A desktop debugging platform for mobile developers.

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README 

        


  logo





  Flipper





  

    Android Maven Badge

  

  

    iOS

  




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## Important Announcement



Flipper is moving away from its Electron distribution to an in-Browser experience.



**How does this affect me?**



Functionality hasn't changed. The UI remains unchanged. Flipper will run in your default browser instead of a standalone application.

If you build from source, Flipper will open in the browser instead of a standalone app. We also provide a MacOS app for the Flipper runtime which can be run and will also open Flipper in the browser.



The last Electron release is [v0.239.0](https://github.com/facebook/flipper/releases/tag/v0.239.0). As such, future releases will not include Electron artifacts.



### React Native support



If you are debugging React Native applications, [v0.239.0](https://github.com/facebook/flipper/releases/tag/v0.239.0) will be the last release with support for it due to technical limitations for React Dev Tools and Hermes Debugger plugins. As such, please refer to that release when debugging React Native applications.



New, dedicated debug tooling for React Native is currently being developed at Meta.

In the mean time we recommend this [blog post](https://shift.infinite.red/why-you-dont-need-flipper-in-your-react-native-app-and-how-to-get-by-without-it-3af461955109) with guidance on how to get the capibilities of Flipper through several alternatives.



---





  Flipper is a platform for debugging mobile apps on iOS and Android and JS apps in your browser or in Node.js. Visualize, inspect, and control your apps from a simple desktop interface. Use Flipper as is or extend it using the plugin API.




![Flipper](website/static/img/inspector.png)



## Table of Contents



- [In this repo](#in-this-repo)

- [Getting started](#getting-started)

  - [Requirements](#requirements)

- [Building from Source](#building-from-source)

  - [Desktop](#desktop)

    - [Running from source](#running-from-source)

    - [Building standalone application](#building-standalone-application)

  - [iOS SDK + Sample App](#ios-sdk--sample-app)

  - [Android SDK + Sample app](#android-sdk--sample-app)

  - [React Native SDK + Sample app](#react-native-sdk--sample-app)

  - [JS SDK + Sample React app](#js-sdk--sample-react-app)

    - [Troubleshooting](#troubleshooting)

- [Documentation](#documentation)

  - [Contributing](#contributing)

  - [License](#license)



## Mobile development



Flipper aims to be your number one companion for mobile app development on iOS

and Android. Therefore, we provide a bunch of useful tools, including a log

viewer, interactive layout inspector, and network inspector.



## Extending Flipper



Flipper is built as a platform. In addition to using the tools already included,

you can create your own plugins to visualize and debug data from your mobile

apps. Flipper takes care of sending data back and forth, calling functions, and

listening for events on the mobile app.



## Contributing to Flipper



Both Flipper's desktop app, native mobile SDKs, JS SDKs are open-source and MIT

licensed. This enables you to see and understand how we are building plugins,

and of course, join the community and help to improve Flipper. We are excited to

see what you will build on this platform.



# In this repo



This repository includes all parts of Flipper. This includes:



- Flipper's desktop app built using [Electron](https://electronjs.org)

  (`/desktop`)

- native Flipper SDKs for iOS (`/iOS`)

- native Flipper SDKs for Android (`/android`)

- cross-platform C++ SDK (`/xplat`)

- React Native Flipper SDK (`/react-native`)

- JS Flipper SDK (`/js`)

- Plugins (`/desktop/plugins/public/`)

- website and documentation (`/website`, `/docs`)



# Getting started



Please refer to our

[Getting Started guide](https://fbflipper.com/docs/getting-started) to set up

Flipper. Or, run `npx flipper-server` for a browser based

version of Flipper.



## Requirements



- node >= 18

- yarn >= 1.16

- iOS developer tools (for developing iOS plugins)

- Android SDK and adb



# Building from Source



## Desktop



### Running from source



```bash

git clone https://github.com/facebook/flipper.git

cd flipper/desktop

yarn

yarn start

```



### Building standalone application



Provide either `--mac`, `--win`, `--linux` or any combination of them to

`yarn build` to build a release zip file for the given platform(s). E.g.



```bash

yarn build --mac

```



You can find the resulting artifact in the `dist/` folder.



## iOS SDK + Sample App



```bash

cd iOS/Sample

rm -f Podfile.lock

pod install --repo-update

open Sample.xcworkspace



```



You can omit `--repo-update` to speed up the installation, but watch out as you

may be building against outdated dependencies.



## Android SDK + Sample app



Start up an android emulator and run the following in the project root:



```bash

./gradlew :sample:installDebug

```



## React Native SDK + Sample app



> Requires RN 0.69+!



```bash

cd react-native/ReactNativeFlipperExample

yarn

yarn android

```



Note that the first 2 steps need to be done only once.



Alternatively, the app can be started on `iOS` by running `yarn ios`.



If this is the first time running, you will also need to run

`pod install --repo-update` from the

`react-native/ReactNativeFlipperExample/ios` folder.



### React Native Windows (Experimental)



An experimental version of Flipper for React Native Windows is available. The

following steps prepare the React Native Flipper project:



```bash

cd react-native/react-native-flipper

vcpkg install openssl:x64-uwp openssl:arm-uwp

vcpkg integrate install

yarn install

cd windows

nuget install ReactNativeFlipper/packages.config

```



In a nutshell, [vcpkg](https://vcpkg.io/) is used to install

[OpenSSL](https://www.openssl.org/). Nuget is used to install

[Boost](https://www.boost.org/).



Then, the sample application can be built and run as follows:



```bash

cd ../../ReactNativeFlipperExample

yarn install

yarn relative-deps

npx react-native run-windows

```



At the moment there's no available package for React Native Flipper. This means

that to integrate Flipper with any other existing applications, an explicit

reference to the project needs to be added just as is done with the sample

application.



## JS SDK + Sample React app



```bash

cd js/react-flipper-example

yarn

yarn start

```



#### Troubleshooting



Older yarn versions might show an error / hang with the message 'Waiting for the

other yarn instance to finish'. If that happens, run the command `yarn` first

separately in the directory `react-native/react-native-flipper`.



# Documentation



Find the full documentation for this project at

[fbflipper.com](https://fbflipper.com/).



Our documentation is built with [Docusaurus](https://docusaurus.io/). You can

build it locally by running this:



```bash

cd website

yarn

yarn start

```



## Contributing



See the [CONTRIBUTING](/CONTRIBUTING.md) file for how to help out.



## License



Flipper is MIT licensed, as found in the [LICENSE](/LICENSE) file.