Examine source code of videoContinuerAP

{
  "manifest_version": 2,
  "name": "videoContinuerAP",
  "version": "1.3",
  "description": "Makes sure that autoplay of a playlist continues on big video platforms.",
  "homepage_url": "https://github.com/andreas-wien/videoContinuerAP",
  "icons": {
    "48": "icons/infinity48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "videoContinuerAP.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{04b47d12-e206-4908-bb17-6fa0d0b30e26}"
    }
  }
}