Examine source code of nextube beta

{
  "manifest_version": 2,
  "name": "nextube",
  "description": "Extesion what makes YouTube usable again",
  "version": "0.0.3",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Default Popup Title",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content-scripts/DisableShorts.js",
        "content-scripts/FixHomeGrid.js",
        "content-scripts/Settings.js",
        "content-scripts/SettingsTrigger.js",
        "content-scripts/SidebarTrigger.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "content-scripts/DisableShorts.css",
    "content-scripts/FixHomeGrid.css",
    "content-scripts/Settings.css",
    "content-scripts/SettingsTrigger.css",
    "content-scripts/SidebarTrigger.css"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c70f5dc7-dfca-4188-9782-1388fb4c1150}"
    }
  }
}