Examine source code of Comment Skipper

{
  "name": "Comment Skipper",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Skip to the next top level comment in Hacker News",
  "browser_action": {
    "default_icon": "images/logo.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "declarativeContent"
  ],
  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
  "background": {
    "page": "background.html",
    "persistent": false
  },
  "content_scripts": [
    {
      "js": [
        "dist/js/content.js"
      ],
      "matches": [
        "https://news.ycombinator.com/item*"
      ]
    }
  ],
  "commands": {
    "skip": {
      "suggested_key": {
        "default": "Ctrl+Shift+1",
        "mac": "Command+Shift+1"
      },
      "description": "Skip to next top level comment"
    }
  }
}