Examine source code of Obserra – YouTube Time Limit & Insights

{
  "manifest_version": 2,
  "name": "Obserra",
  "author": "Obserra",
  "description": "Master your YouTube habits with advanced tools for limits, insights, and productivity. Stay focused, make smarter choices, and achieve your biggest goals effortlessly.",
  "version": "2.1.1",
  "homepage_url": "https://obserra.com",
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "https://obserra.com/*",
    "https://www.youtube.com/*",
    "https://youtube.com/*",
    "https://m.youtube.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*",
        "https://youtube.com/*",
        "https://m.youtube.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "main.js"
      ]
    },
    {
      "matches": [
        "https://obserra.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "syncVideos.js",
        "auth.js"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Obserra",
    "default_icon": "icon32.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e1c3ec9f-159a-4df4-93d1-aa6c4f20a431}",
      "strict_min_version": "68.0"
    }
  }
}