Examine source code of bettermp

{
  "manifest_version": 3,
  "name": "bettermp",
  "version": "2.3.2",
  "description": "A faster Second Life Marketplace: dense grid, hover previews, body filters, blacklists, dark mode.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "bettermp: toggle takeover",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "src/options/index.html",
    "open_in_tab": true
  },
  "background": {
    "page": "background.html"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://docs.google.com/*",
    "https://*.googleusercontent.com/*"
  ],
  "content_scripts": [
    {
      "js": [
        "assets/main.ts-loader-CqyYaMS1.js"
      ],
      "matches": [
        "https://marketplace.secondlife.com/*"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "https://marketplace.secondlife.com/*"
      ],
      "resources": [
        "assets/ext-DKLbHjyQ.js",
        "assets/theme-CkDUyqCB.js",
        "assets/main.ts-DcG7F65u.js"
      ],
      "use_dynamic_url": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "bettermp@th3a.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}