Examine source code of LeetCode Problem Copier

{
  "manifest_version": 3,
  "name": "LeetCode Problem Copier",
  "version": "1.1.0",
  "description": "Copy LeetCode problem description and starter code to clipboard, formatted as comments for your editor",
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-copier@punit",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://leetcode.com/problems/*",
        "https://www.leetcode.com/problems/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}