Examine source code of Minimal YouTube

{
  "description": "Declutter Youtube.",
  "manifest_version": 2,
  "name": "Minimal YouTube",
  "version": "1.0.1resigned1",
  "homepage_url": "https://github.com/choochootrain/minimal-youtube",
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "declutter.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{572b5db5-87aa-42ce-b159-dd4e1c630364}"
    }
  }
}