Examine source code of AlphaVPN

{
  "manifest_version": 2,
  "name": "AlphaVPN",
  "version": "1.0.0",
  "description": "Route this browser through your own AlphaVPN server. Sign in, flip the switch.",
  "browser_specific_settings": {
    "gecko": {
      "id": "alphavpn@alphaxp.net",
      "_comment_min_version": [
        "112 is the real floor for the CODE — that is where Firefox added ES",
        "module background scripts, which background.js uses.",
        "140 is the floor for the MANIFEST: data_collection_permissions below",
        "was introduced there, and AMO warns when strict_min_version predates a",
        "key it contains. Declaring 140 costs the 112-139 range and returns a",
        "clean validation. To trade back, set this to 112.0 and accept two",
        "KEY_FIREFOX_UNSUPPORTED_BY_MIN_VERSION warnings — they do not block",
        "submission, and the consent UI simply does not appear before 140."
      ],
      "strict_min_version": "140.0",
      "_comment_data_collection": [
        "Required for all NEW Firefox extensions. Declared from what the code",
        "actually does, not from what is convenient:",
        "  authenticationInfo — api.js posts email + password to /login and",
        "    /signup, and stores the returned account token.",
        "  browsingActivity  — background.js registers proxy.onRequest for",
        "    <all_urls>, so it sees every request URL, and when connected it",
        "    routes that traffic through the operator's own proxy.",
        "Neither is optional to the product, so both go in `required`."
      ],
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "browsingActivity"
        ]
      }
    },
    "_comment_android": [
      "Firefox for Android got data_collection_permissions in 142, two",
      "releases after desktop. Without its own floor the linter warns that the",
      "desktop minimum is too low for Android — the versions are not the same",
      "number and cannot share one key."
    ],
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "proxy",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "https://api.alphaxp.net/*",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module",
    "persistent": true
  },
  "browser_action": {
    "default_title": "AlphaVPN",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  }
}