Examine source code of Hangar Export

{
  "manifest_version": 2,
  "name": "Hangar Export ",
  "version": "0.5",
  "short_name": "Hangar Export",
  "description": "Hangar Export",
  "browser_action": {
    "default_icon": "images/icon.png",
    "default_popup": "html/popup.html",
    "default_title": "Hangar Export"
  },
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "content_scripts": [
    {
      "run_at": "document_idle",
      "matches": [
        "*://robertsspaceindustries.com/*"
      ],
      "js": [
        "scripts/content.js"
      ]
    }
  ],
  "web_accessible_resources": [],
  "permissions": [
    "storage",
    "*://robertsspaceindustries.com/*"
  ],
  "background": {
    "scripts": []
  }
}