Examine source code of Story Export Studio

{
  "manifest_version": 3,
  "name": "Story Export Studio",
  "short_name": "Story Export",
  "version": "2.11.0",
  "description": "Export stories and fanfiction to TXT, PDF or EPUB from Wattpad, AO3, Royal Road, Scribble Hub, FanFiction.net and XenForo forums.",
  "permissions": [
    "storage",
    "tabs",
    "downloads",
    "scripting"
  ],
  "host_permissions": [
    "https://*.wattpad.com/*"
  ],
  "optional_host_permissions": [
    "https://archiveofourown.org/*",
    "https://*.royalroad.com/*",
    "https://*.royalroadcdn.com/*",
    "https://www.scribblehub.com/*",
    "https://cdn.scribblehub.com/*",
    "https://*.spacebattles.com/*",
    "https://*.sufficientvelocity.com/*",
    "https://*.fanfiction.net/*"
  ],
  "background": {
    "scripts": [
      "lib/jszip.js",
      "lib/jspdf.umd.min.js",
      "utils/patterns.js",
      "scripts/extractors/api.js",
      "adapters/registry.js",
      "adapters/wattpad.js",
      "adapters/ao3.js",
      "adapters/royalroad.js",
      "adapters/scribblehub.js",
      "adapters/xenforo.js",
      "adapters/fanfiction.js",
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.wattpad.com/*"
      ],
      "js": [
        "utils/patterns.js",
        "utils/selectors.js",
        "utils/validators.js",
        "adapters/registry.js",
        "adapters/wattpad.js",
        "adapters/ao3.js",
        "adapters/royalroad.js",
        "adapters/scribblehub.js",
        "adapters/xenforo.js",
        "adapters/fanfiction.js",
        "scripts/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "Story Export Studio",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "story-export-studio@addons.mozilla.org",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}