Examine source code of FocusFlow

{
  "manifest_version": 3,
  "name": "FocusFlow",
  "version": "0.1.2",
  "license": "GPL-3.0",
  "description": "Block distracting websites like YouTube during custom hours or timer intervals to help you focus on your studies.",
  "browser_specific_settings": {
    "gecko": {
      "id": "focusflow@thevideofelix.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "alarms",
    "declarativeNetRequest",
    "tabs"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon.svg"
  },
  "icons": {
    "16": "icons/icon.svg",
    "32": "icons/icon.svg",
    "48": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "blocked.html",
        "blocked.css",
        "blocked.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}