Examine source code of Flight Bonus Notifier

{
  "manifest_version": 2,
  "name": "Flight Bonus Notifier",
  "version": "1.3.2",
  "description": "Notifier widget to see flight bonus participating online shops.",
  "browser_specific_settings": {
    "gecko": {
      "id": "eurobonus-notifier@orodreth.com",
      "strict_min_version": "91.0"
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "https://raw.githubusercontent.com/*",
    "https://cdn.jsdelivr.net/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "EuroBonus Notifier"
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    "logo.jpg"
  ]
}