Examine source code of HizSearch Steam Button

{
  "manifest_version": 3,
  "name": "HizSearch Steam Button",
  "version": "1.5.0",
  "description": "Search the current game on HizSearch",
  "author": "HizSearch",
  "homepage_url": "https://hizsearch.pages.dev",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "HizSearch Steam Button"
  },
  "options_ui": {
    "page": "popup/popup.html",
    "open_in_tab": false
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://store.steampowered.com/app/*",
        "https://steamdb.info/app/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@hizsearch-steam-button",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}