Examine source code of Boost.ink Skipper

{
  "manifest_version": 2,
  "name": "Boost.ink Skipper",
  "description": "Automatically skips URLs generated by boost.ink",
  "version": "1.0.4",
  "icons": {
    "128": "icons/icon_128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://*.boost.ink/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ]
}