react-native-windows/docs/project-structure.md

MSBuild Project Structure

This is a description of each of the core projects, their purpose and output artifacts.
Sample applications are not covered.

Alphabetical Index

• Common\Common.vcxproj
• Chakra\Chakra.vcxitems
• Desktop\React.Windows.Desktop.vcxproj
• Desktop.DLL\React.Windows.Desktop.DLL.vcxproj
• Desktop.IntegrationTests\React.Windows.Desktop.IntegrationTests.vcxproj
• Desktop.UnitTests\React.Windows.Desktop.UnitTests.vcxproj
• Folly\Folly.vcxproj
• FollyWin32\FollyWin32.vcxproj
• IntegrationTests\React.Windows.IntegrationTests.vcxproj
• Microsoft.ReactNative\Microsoft.ReactNative.vcxproj
• Microsoft.ReactNative.Cxx\Microsoft.ReactNative.Cxx.vcxitems
• Microsoft.ReactNative.Managed\Microsoft.ReactNative.Managed.csproj
• Microsoft.ReactNative.SharedManaged\Microsoft.ReactNative.SharedManaged.projitems
• ReactCommon\ReactCommon.vcxproj
• ReactCommon.UnitTests\ReactCommon.UnitTests.vcxproj
• Shared\Shared.vcxitems

Common Projects

Common

Static Library
Functionality shared between React and JSI projects.

Microsoft.ReactNative.Shared

Shared Items (no build artifact)
Holds sources common to both Windows variants, that require different build configuration (i.e. compiler flags, language standard).

ReactCommon

Static Library
React Native core, cross-platform C++ types and interfaces.
Sources provided as part of the react-native Node dependency. Not part of this repository.
See https://github.com/facebook/react-native/tree/v0.62.0/ReactCommon.

Folly

Static Library
Folly variant type system for JavaScript/C++ interoperability.
Sources provided as part of the react-native Node dependency. Not part of this repository.

Chakra

Shared Items (no build artifact)
ChakraCore bridging layer. May use different compiler flags between Windows variants.

Microsoft.ReactNative.Cxx

Shared Items (no build artifact)
Contains helpers to simplify authoring C++/WinRT native modules on top of Microsoft.ReactNative.

Microsoft.ReactNative.Managed

Managed Library
Contains helpers to simplify authoring C# native modules on top of Microsoft.ReactNative.

Microsoft.ReactNative.SharedManaged

Deprecated: This is still here so that customers get a specific error message on how to upgrade their project.

React.Windows.IntegrationTests

Static Library
Common framework for running out of process and/or full React instance testing.

IntegrationTests (Node Project)

MSBuild Node project. For reading/editing purposes only (no build artifact)
Set of JavaScript component tests for RNTester. Sources provided as part of the react-native Node dependency. Not part of this repository.
See https://github.com/facebook/react-native/tree/v0.62.0/IntegrationTests.

Windows Desktop Projects

React.Windows.Desktop

Static Library
Set of Native Modules, View Managers and Executors for Windows Desktop.

React.Windows.Desktop.DLL

Dynamic Library
Shared library that exports the intended public API surface for React.Windows.Desktop.
Main artifact to use in Windows Desktop applications.

React.Windows.Desktop.UnitTests

VSTest Dynamic Library
Set of isolated (mocked) tests for types defined in React.Windows.Desktop.

React.Windows.Desktop.IntegrationTests

VSTest Dynamic Library
Set of component tests that validate functionality against external runtime components (i.e. networking servers, file system, React Native applications, external processes).
Validates React.Windows.Desktop.DLL.

ReactCommon.UnitTests

Google Test Application
Gathers tests within react-native\ReactCommon.
Its main purpose is to validate JSI with any given engine (V8, ChakraCore, etc).

FollyWin32

Static Library
Superset of Folly APIs only available and required by React.Windows.Desktop.
Sources provided as part of the react-native Node dependency. Not part of this repository.

Windows Universal Projects

Microsoft.ReactNative

Windows Runtime Component
The primary Windows Universal entry point and public API surface for React Native Windows.
Main artifact to use in Windows Universal applications.