Examine source code of Import Wishlist

{
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "__MSG_extensionName__"
  },
  "author": "Daniel Mendes",
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{720b5715-5fbe-442b-bf44-be3bb4bb774a}"
    }
  },
  "content_scripts": [
    {
      "js": [
        "content/content.js"
      ],
      "matches": [
        "https://auth.gog.com/token*"
      ]
    }
  ],
  "default_locale": "en",
  "description": "__MSG_extensionDescription__",
  "host_permissions": [
    "https://store.steampowered.com/wishlist/profiles/*",
    "https://steamcommunity.com/*",
    "https://*.gog.com/*",
    "https://import-wishlist.netlify.app/.netlify/functions/*"
  ],
  "icons": {
    "16": "assets/icons/icon-16.png",
    "48": "assets/icons/icon-48.png",
    "128": "assets/icons/icon-128.png"
  },
  "manifest_version": 3,
  "name": "__MSG_extensionName__",
  "permissions": [
    "storage",
    "identity",
    "webNavigation",
    "webRequest",
    "webRequestBlocking"
  ],
  "version": "0.1.1"
}