Examine source code of Android Apps Old Versions

{
  "manifest_version": 3,
  "name": "Android Apps Old Versions",
  "version": "0.7.1",
  "description": "Quickly view and access old versions of Android apps from Google Play.",
  "permissions": [
    "tabs"
  ],
  "host_permissions": [
    "https://play.google.com/*",
    "https://versions.playstoreapi.com/*",
    "https://mi9.com/*"
  ],
  "action": {
    "default_title": "Old Versions",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "oldversions@mi9.com",
      "strict_min_version": "109.0"
    }
  }
}