Examine source code of teddit-cleaner

{
  "manifest_version": 2,
  "name": "teddit-cleaner",
  "version": "0.0.2",
  "permissions": [
    "storage"
  ],
  "description": "cleans teddit",
  "icons": {},
  "content_scripts": [
    {
      "matches": [
        "https://teddit.net/*"
      ],
      "js": [
        "teddit-cleaner.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "web_accessible_resources": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "teddit-cleaner@example.com",
      "strict_min_version": "57.0"
    }
  }
}