Examine source code of CyStack Endpoint

{
  "version": "1.2.23",
  "name": "__MSG_extName__",
  "description": "__MSG_extDesc__",
  "homepage_url": "https://cystack.net/endpoint",
  "manifest_version": 2,
  "default_locale": "en",
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    }
  },
  "sidebar_action": {
    "default_panel": "index.html",
    "default_title": "__MSG_extName__",
    "default_icon": {
      "19": "icons/19.png",
      "38": "icons/38.png"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage",
    "alarms",
    "browsingData",
    "declarativeNetRequest"
  ],
  "optional_permissions": [
    "nativeMessaging"
  ],
  "icons": {
    "16": "icons/16.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "background": {
    "scripts": [
      "static/js/background.js"
    ],
    "persistent": true
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Ctrl+Shift+E",
        "mac": "Command+Shift+E"
      }
    },
    "_execute_sidebar_action": {
      "suggested_key": {
        "default": "Alt+Shift+D",
        "mac": "Alt+Shift+D"
      }
    }
  },
  "content_scripts": [
    {
      "all_frames": true,
      "match_about_blank": true,
      "js": [
        "static/js/content.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "file:///*"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "bar.html",
    "icons/*",
    "static/js/inject.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "cystack-endpoint-pro@cystack.net"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self'"
}