Examine source code of Manga-Scout

{
  "name": "Manga-Scout",
  "version": "2.0.2",
  "manifest_version": 2,
  "description": "An extension to check for new manga chapters across multiple webpages.",
  "icons": {
    "16": "icons/manga-16-half.png",
    "128": "icons/manga-163-half.png"
  },
  "background": {
    "scripts": [
      "./sw.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "permissions": [
    "alarms",
    "storage",
    "activeTab",
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "Manga-Scout@fochlac.com"
    }
  },
  "browser_action": {
    "default_icon": {
      "19": "icons/manga-19-half.png",
      "38": "icons/manga-32-half.png"
    },
    "default_title": "No new chapters available.",
    "default_popup": "popup.html"
  },
  "web_accessible_resources": [
    "images/*",
    "fonts/*"
  ]
}