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Extension

This is the WebExtension responsible for automating the browser

Developing

Watching

Kicks off the gulp watcher that rebuilds the app/lib directories on change.

yarn workspace @packages/extension watch

Building

@packages/extension has a few different build processes occurring that are all driven by the gulpfile.

  • app - The web extension piece of the code, has two separate bundles:
    • v2: Version 2 of the web extension which uses webpack to bundle the app/v2 directory and output it as background.js
    • v3: Version 3 of the web extension, which doesn't have any external dependencies so we are able to compile down to `ESM to run in the browser natively.
  • lib - the @packages/extension main entry that has utility methods on how to find/load the extension. This is transpiled to CommonJS as it is consumed in the Node context.
yarn workspace @packages/extension build

Testing

yarn workspace @packages/extension test
yarn workspace @packages/extension test-watch
yarn workspace @packages/extension test-debug

Debugging

In Chrome

  1. Open Chrome
  2. Go into Extensions (chrome://extensions)
  3. Check Developer Mode (top right of screen)
  4. Click Load unpacked extension... (top left of screen)
  5. Choose packages/extension/dist directory (v2)
  6. Click background page to debug background.js (inspect views background page)
  7. Click Reload (⌘R) to pull in changes to manifest.json

In Firefox

  1. Launch Firefox via cypress open.
  2. Once Firefox is open, open an new tab and navigate to about:debugging.
  3. Click the This Firefox navigation item on the left hand navigation pane and locate the Cypress extension under Temporary Extensions.
  4. Click inspect. A console window should now appear in a separate window.
  5. Close the about:debugging tab.
  6. In the newly spawned console window, you should be able to see background.js in the Debugger tab.
  7. Set breakpoints as needed to inspect what code you are trying to debug. Happy debugging!