Examine source code of boost-Bar

{
  "name": "boost-Bar",
  "version": "1.3.3",
  "manifest_version": 2,
  "description": "Beim Einkaufen Gutes tun - ohne Extrakosten",
  "background": {
    "scripts": [
      "jquery.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "jquery.js",
        "content.js"
      ]
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "permissions": [
    "https://www.boost-project.com/",
    "storage",
    "tabs"
  ],
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "jid1-43E5o59FVrjLig@jetpack"
    }
  }
}