Examine source code of no-recommends

{
  "manifest_version": 2,
  "name": "no-recommends",
  "version": "1.0",
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/watch*"
      ],
      "js": [
        "hide-recommends.js"
      ]
    }
  ]
}