Examine source code of Dictionary Redefined

{
  "manifest_version": 2,
  "name": "Dictionary Redefined",
  "description": "Instant pop-up definitions anywhere on the web. Double-click to see the definition.",
  "version": "1.0.0",
  "icons": {
    "16": "icon/16icon.png",
    "48": "icon/48icon.png",
    "96": "icon/96icon.png",
    "128": "icon/128icon.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dictionary-redefined@prankroker",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Dictionary Redefined",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "content-scripts/content.css"
  ]
}