Examine source code of HubL Code Formatter

{
  "manifest_version": 3,
  "name": "HubL Code Formatter",
  "version": "1.0.4",
  "description": "Format HubL, HTML, CSS & JavaScript in HubSpot Design Manager with one click. Clean, readable code instantly.",
  "author": "StudioNope",
  "homepage_url": "https://studionope.com",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://*.hubspot.com/*"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.hubspot.com/design-manager/*"
      ],
      "js": [
        "src/formatter-bundle.js",
        "src/main-world.js",
        "src/editor-enhancements.js"
      ],
      "run_at": "document_idle",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://*.hubspot.com/design-manager/*"
      ],
      "js": [
        "src/content.js"
      ],
      "run_at": "document_idle",
      "world": "ISOLATED"
    }
  ],
  "commands": {
    "format-hubl": {
      "suggested_key": {
        "default": "Ctrl+Shift+F",
        "mac": "Command+Shift+F"
      },
      "description": "Format selected HubL code"
    }
  },
  "action": {
    "default_popup": "dist/options/index.html"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon48.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "hubl-formatter@studionope.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}