Examine source code of Worm Matrix Connect

{
  "manifest_version": 2,
  "name": "Worm Matrix Connect",
  "version": "1.0.1",
  "description": "This extension allows map options in Wormate.io webgame with funny graphics",
  "author": "Ali Huseen (absi)",
  "icons": {
    "128": "icon.png"
  },
  "browser_specific_settings": {
    "gecko_android": {
      "strict_min_version": "113.0"
    },
    "gecko": {
      "id": "wormatrix-absi@extensions.mozilla.org"
    }
  },
  "browser_action": {
    "default_popup": "popup/popup.html",
    "default_title": "Worm Matrix Connect"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "declarativeNetRequest",
    "*://wormate.io/*"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  }
}