Examine source code of TDxPro

{
  "manifest_version": 2,
  "name": "TDxPro",
  "version": "1.5",
  "description": "Adds custom styles to TeamDynamix.",
  "icons": {
    "48": "./icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://langara.teamdynamix.com/TDNext/*"
      ],
      "js": [
        "build/main.bundle.js"
      ],
      "css": [],
      "all_frames": true
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "storage",
    "webRequest"
  ],
  "web_accessible_resources": [
    "addon_styles.css"
  ],
  "optional_permissions": [
    "tabs"
  ],
  "browser_action": {
    "browser_style": true,
    "default_popup": "popup/index.html",
    "default_icon": {
      "16": "icon.png",
      "32": "icon.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3283b6d4-0539-428f-92a8-36f2bf94acc2}"
    }
  }
}