Examine source code of Fluxscript

{
  "name": "Fluxscript",
  "version": "0.9.5",
  "description": "Inyecta scripts y estilos personalizados en sitios web para mejorar tu experiencia de navegación",
  "author": "Angel Careaga",
  "icons": {
    "16": "icons/logo.png",
    "32": "icons/logo.png",
    "48": "icons/logo.png",
    "128": "icons/logo.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "webNavigation",
    "tabs",
    "<all_urls>"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "js/injected-script.js",
    "css/output.css",
    "css/code-mirror.css",
    "css/switches.css"
  ],
  "homepage_url": "https://www.fluxscript.com",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/logo.png",
      "32": "icons/logo.png",
      "48": "icons/logo.png",
      "128": "icons/logo.png"
    }
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "browser_specific_settings": {
    "gecko": {
      "id": "{d0dca537-d7e5-4f7b-8f1d-22583e6ab433}"
    }
  }
}