Examine source code of Comment Barber

{
  "description": "This add-on makes it easier to focus on the topics you care about in comment threads.",
  "manifest_version": 2,
  "name": "Comment Barber",
  "version": "1.2resigned1",
  "homepage_url": "https://github.com/commentfilter/commentbarber",
  "icons": {
    "48": "images/barbershop.png"
  },
  "web_accessible_resources": [
    "images/mute.png",
    "images/plus.png",
    "images/star.png",
    "images/star-filled.png"
  ],
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "css": [
        "styles/barber.css"
      ],
      "js": [
        "scripts/thirdparty/jquery.slim.min.js",
        "scripts/selectors.js",
        "scripts/storage.js",
        "scripts/barber.js"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d05f570d-637b-4c65-ae53-31cbcfd9dc2e}"
    }
  }
}