Examine source code of Bulk Steam Nickname

{
  "manifest_version": 3,
  "name": "Bulk Steam Nickname",
  "version": "1.0.1",
  "description": "Bulk nickname Steam friends directly from the Steam website.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://steamcommunity.com/*"
  ],
  "action": {
    "default_icon": {
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://steamcommunity.com/*/friends*"
      ],
      "js": [
        "content-script.js"
      ],
      "css": [
        "steam-nickname.css"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bulk-steam-nickname@brickplayz.dev",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [],
        "has_previous_consent": false
      }
    }
  }
}