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Getting Started with FeatureFlag React Wrapper

This project was bootstrapped with Create React App.

This app is intended to become both a demonstration and a library:

  • As a demonstration, it shows how you can configure a simple React component to be aware of feature flags
  • As a library, it provides functionality for safely wrapping a feature flag system in whatever tooling you want. We provide LaunchDarkly implementation as an example.

Where We Are Today

  • There's a wrapper component and associated unit tests that prove you can unit test code that is feature flagged. The test also includes a simple unit test driven feature flag system testFeatureFlags. Check out src/FeatureFlagWrapper.test.js.
  • There's a LaunchDarkly plugin (src/LaunchDarkly.js) that provides proper events into the wrapper.
  • There's a sample app (src/App.js) that uses a LaunchDarkly feature flag. You'll need to make a .env file that contains a value for REACT_APP_LAUNCH_DARKLY_CLIENT_ID which you can get from the LaunchDarkly console: Account Settings > Projects > Client-side ID for whichever env you care about.

Where We Want To Go From Here

  • Package this project up as an NPM module so you can reuse the <FeatureFlagWrapper> component instead of copy-pasting the two relevant files into your local project.
  • Make an environment-variable driven plugin so we aren't coupled to LaunchDarkly.

Running the Sample App

yarn start

You'll need to have access to our LaunchDarkly account or change the feature flag that the app uses.

License

Copyright © 2021 Artium Technologies, LLC

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.

This Source Code may also be made available under the following Secondary Licenses when the conditions for such availability set forth in the Eclipse Public License, v. 2.0 are satisfied: GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version, with the GNU Classpath Exception which is available at https://www.gnu.org/software/classpath/license.html.