Examine source code of My Clipboard

{
  "name": "My Clipboard",
  "description": "A Cross-platform universal clipboard for myclipboard.io",
  "version": "1.1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "clipboardRead"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://myclipboard.io/token/firefox/*"
      ],
      "js": [
        "scripts/auth_content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "templates/authenticate.html",
    "templates/onboarding.html"
  ],
  "browser_action": {
    "default_popup": "templates/popup.html",
    "default_icon": {
      "16": "assets/favicon.png",
      "32": "assets/favicon.png",
      "48": "assets/favicon.png",
      "128": "assets/favicon.png"
    }
  },
  "icons": {
    "16": "assets/favicon.png",
    "32": "assets/favicon.png",
    "48": "assets/favicon.png",
    "128": "assets/favicon.png"
  },
  "options_ui": {
    "page": "templates/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "myclipboard@myclipboard.io",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}