Examine source code of Dictionary Anywhere

{
  "manifest_version": 2,
  "name": "Dictionary Anywhere",
  "version": "1.0.0",
  "description": "Instantly look up definitions of selected words on any webpage.",
  "author": "Dictionary Anywhere Team",
  "homepage_url": "https://example.com",
  "icons": {
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  },
  "permissions": [
    "activeTab",
    "tabs",
    "storage",
    "<all_urls>"
  ],
  "browser_action": {
    "default_title": "Dictionary Anywhere",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dictionary-anywhere-9d3f7a1b@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}