Examine source code of Tyypo.App

{
  "manifest_version": 2,
  "name": "Tyypo.App",
  "description": "AI Writing Coach!",
  "version": "0.3.0",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "permissions": [
    "storage",
    "https://firebasevertexai.googleapis.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "hello@tyypo.app",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Popup",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "all_frames": true,
      "match_about_blank": true,
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}