Examine source code of Turas.app

{
  "name": "Turas.app",
  "description": "Power tool for Google Maps that helps well-organized travelers plan their next adventure!",
  "version": "1.22",
  "manifest_version": 2,
  "icons": {
    "16": "icon/turas-t-green-16.png",
    "32": "icon/turas-t-green-32.png",
    "48": "icon/turas-t-green-48.png",
    "96": "icon/turas-t-green-96.png",
    "128": "icon/turas-t-green-128.png"
  },
  "browser_action": {
    "default_popup": "src/popup.html"
  },
  "permissions": [
    "storage",
    "unlimitedStorage",
    "https://firestore.googleapis.com/*",
    "*://*.googleapis.com/*",
    "*://*.google.com/*"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@turas.app",
      "strict_min_version": "120.0"
    }
  },
  "web_accessible_resources": [
    "logo/turas-t-green.png",
    "fonts/quicksand.woff2",
    "fonts/playwrite.woff2"
  ],
  "content_scripts": [
    {
      "js": [
        "src/maps-connector.js"
      ],
      "matches": [
        "https://*.google.com/maps/*",
        "https://*.google.com.au/maps/*",
        "https://*.google.com.sg/maps/*",
        "https://*.google.com.tw/maps/*",
        "https://*.google.co.in/maps/*",
        "https://*.google.co.jp/maps/*",
        "https://*.google.co.kr/maps/*",
        "https://*.google.co.nz/maps/*",
        "https://*.google.co.uk/maps/*",
        "https://*.google.dk/maps/*",
        "https://*.google.de/maps/*",
        "https://*.google.es/maps/*",
        "https://*.google.fr/maps/*",
        "https://*.google.nl/maps/*"
      ],
      "css": [
        "style.css"
      ]
    },
    {
      "js": [
        "src/auth-connector.js"
      ],
      "matches": [
        "http://localhost/*",
        "http://127.0.0.1/*",
        "https://turas.app/*"
      ]
    }
  ]
}