Examine source code of lurrkr

{
  "manifest_version": 3,
  "name": "lurkr",
  "version": "1.3",
  "description": "Read Reddit logged out: removes login and app nags, blocks trackers, and adds reading conveniences.",
  "browser_specific_settings": {
    "gecko": {
      "id": "{007d776e-d05b-4162-96ca-25d6c057adba}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "declarativeNetRequest"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "lurkr_trackers",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "icons": {
    "48": "icon.svg",
    "96": "icon.svg"
  },
  "action": {
    "default_icon": "icon.svg",
    "default_title": "lurkr — works on reddit.com tabs"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_start"
    }
  ]
}