yarn install
Now build the extension using
yarn build
You will see a build folder generated inside [PROJECT_HOME]
In Chrome browser, go to chrome://extensions page and switch on developer mode. This enables the ability to locally install a Chrome extension.
Now click on the LOAD UNPACKED and browse to [PROJECT_HOME]\build ,This will install the React app as a Chrome extension.
When you go to any website and click on extension icon, injected page will toggle.
The repo is available as open source under the terms of the MIT License.