Examine source code of AlgoBridge

{
  "manifest_version": 2,
  "name": "AlgoBridge",
  "version": "1.0.1",
  "description": "Send Codeforces problem statement to VS Code",
  "permissions": [
    "activeTab",
    "https://codeforces.com/*",
    "http://localhost:27123/*"
  ],
  "browser_action": {
    "default_title": "Send problem to VS Code",
    "default_icon": {
      "16": "icons/btn16.png",
      "32": "icons/btn32.png",
      "64": "icons/btn64.png",
      "128": "icons/btn128.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "algobridge@kartevsumit",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "collects_personal_data": false,
        "collects_user_activity": false,
        "collects_web_activity": false
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://codeforces.com/contest/*",
        "*://codeforces.com/problemset/problem/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ]
}