Examine source code of Reddit Redirect Top Month

{
  "manifest_version": 3,
  "name": "Reddit Top of the Month",
  "version": "1.1.0",
  "description": "Open Reddit and subreddit home pages at their top posts from the past month.",
  "icons": {
    "48": "icons/icon.svg",
    "96": "icons/icon.svg"
  },
  "permissions": [
    "declarativeNetRequest"
  ],
  "host_permissions": [
    "*://reddit.com/*",
    "*://*.reddit.com/*"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "reddit_redirects",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "reddit-top-month@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}