Examine source code of PeerTubeify

{
  "manifest_version": 2,
  "name": "PeerTubeify",
  "version": "0.6.1resigned1",
  "description": "On YouTube, displays a link to the same video on PeerTube, if it exists.",
  "homepage_url": "https://gitlab.com/Ealhad/peertubeify",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "<all_urls>",
    "webRequest",
    "webRequestBlocking"
  ],
  "background": {
    "scripts": [
      "dist/background.js",
      "dist/vendors.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.invidio.us/*"
      ],
      "js": [
        "dist/youtube.js",
        "dist/vendors.js"
      ]
    },
    {
      "matches": [
        "https://*/videos/watch/*"
      ],
      "js": [
        "dist/peertube.js",
        "dist/vendors.js"
      ]
    }
  ],
  "options_ui": {
    "page": "dist/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{01175c8e-4506-4263-bad9-d3ddfd4f5a5f}"
    }
  }
}