Examine source code of Hide Leetcode Difficulty & Acceptance

{
  "manifest_version": 3,
  "name": "Hide Leetcode Difficulty & Acceptance",
  "version": "1.0",
  "description": "Hide difficulty and acceptance rate of problems across leetcode with just a single toggle.",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "*://*.leetcode.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Hide Leetcode Difficulty & Acceptance",
    "default_icon": "icons/48.png"
  },
  "icons": {
    "48": "icons/48.png",
    "96": "icons/96.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.leetcode.com/*"
      ],
      "css": [
        "hide.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.leetcode.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "leetcode-hide@brightKnight",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}