Examine source code of Hacker News Next

{
  "manifest_version": 2,
  "name": "web-rate",
  "version": "1.1",
  "permissions": [
    "activeTab",
    "storage",
    "tabs"
  ],
  "commands": {
    "toggle-nextpage": {
      "suggested_key": {
        "default": "F8"
      },
      "description": "next page"
    },
    "toggle-comments": {
      "suggested_key": {
        "default": "F9"
      },
      "description": "Show the comments"
    }
  },
  "description": "Rate how interesting a website is",
  "icons": {
    "48": "check.png"
  },
  "background": {
    "scripts": [
      "keys.js"
    ]
  },
  "browser_action": {
    "default_icon": "check.png",
    "default_title": "web-rate",
    "default_popup": "web-rate.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d0e7b36-deb5-4bf8-8a5e-575696de7e98}"
    }
  }
}