Examine source code of Hide GitHub Reactions

{
  "manifest_version": 2,
  "name": "Hide GitHub Reactions",
  "version": "1.0",
  "description": "Keeps all Github reactions out of your gaze",
  "icons": {
    "64": "icons/closed-eye-64.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://github.com/*"
      ],
      "css": [
        "hide-reactions.css"
      ]
    }
  ]
}