Examine source code of Floaty

{
  "description": "Restore video timestamps",
  "manifest_version": 2,
  "name": "Floaty",
  "version": "1.1",
  "homepage_url": "https://github.com/tortlewortle",
  "icons": {
    "128": "icons/128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.floatplane.com/post*"
      ],
      "js": [
        "floaty.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{a120c60e-cdcc-4466-a867-c434d098ac60}"
    }
  }
}