Examine source code of osu! Beatmap Preview

{
  "name": "osu! Beatmap Preview",
  "short_name": "osu! preview",
  "description": "An extension to preview osu! beatmaps directly in your browser.",
  "version": "0.1.0",
  "manifest_version": 3,
  "minimum_chrome_version": "121",
  "icons": {
    "16": "icons/logo-16.png",
    "32": "icons/logo-32.png",
    "48": "icons/logo-48.png",
    "96": "icons/logo-96.png",
    "128": "icons/logo-128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/logo-16.png",
      "32": "icons/logo-32.png",
      "48": "icons/logo-48.png",
      "96": "icons/logo-96.png",
      "128": "icons/logo-128.png"
    },
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js",
    "type": "module"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "https://osu.ppy.sh/*",
    "https://new.ppy.sh/*",
    "https://assets.ppy.sh/*",
    "https://b.ppy.sh/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "osu-beatmap-preview-plugin@dotremilie",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      },
      "strict_min_version": "140.0"
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}