This is a complete example on how to test a chrome extension with Puppeteer. This repo is referenced in our blog. In this repo you can find:

• A simple chrome extension under replacer-chrome-extension.
• A simple React app under src.
• Puppeteer e2e tests under e2e.

Requirements: Node >=20 and Chromium (even tough you're going to install Puppeteer make sure you have chromium - https://www.chromium.org/getting-involved/download-chromium/).

1. npm install to install the dependencies.
2. npm start to run the react app, must be running since it is the base for the e2e tests.
3. npm run e2e to run the e2e tests.

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