ComerciaJS DevTools is a Chrome extension developed by CGP that extends the functionality of Chrome Developer Tools specifically for ComerciaJS apps. This free extension allows developers to test ComerciaJS apps directly in their browser, simulating payment events, viewing mocked payment states, and testing different configuration conditions.

Once installed, the ComerciaJS DevTools extension adds an icon to the browser's toolbar. The icon's color indicates whether or not the extension has detected the presence of ComerciaJSPolyfill code. If the code is not detected, the icon will be gray. However, if the code is detected, the icon will be colorful, and a ComerciaJS tab will be added to the browser's DevTools panel.

To access the ComerciaJS DevTools, simply press F12 and navigate to the ComerciaJS tab. From there, developers can take advantage of the added features and tools to streamline their ComerciaJS app development process.

Please note that this extension only works with the ComerciaJSPolyfill library, ensuring compatibility and optimal performance for ComerciaJS apps.