Examine source code of Swagger UI

{
  "manifest_version": 2,
  "name": "Swagger UI",
  "description": "Swagger UI for Firefox",
  "version": "1.0.6",
  "author": "<a href='mailto:steven.tappert@gmail.com'>Steven Tappert</a>",
  "homepage_url": "https://github.com/sammy8806/firefox-swagger-ui",
  "icons": {
    "16": "logos/logo-swagger-16.png",
    "32": "logos/logo-swagger-32.png",
    "64": "logos/logo-swagger-64.png",
    "128": "logos/logo-swagger-128.png"
  },
  "permissions": [
    "https://*/",
    "http://*/",
    "tabs",
    "clipboardWrite"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "logos/logo-swagger-16.png",
      "32": "logos/logo-swagger-32.png",
      "64": "logos/logo-swagger-64.png",
      "128": "logos/logo-swagger-128.png"
    },
    "default_title": "Swagger UI Console"
  }
}