Examine source code of YouTube Redux

{
  "name": "YouTube Redux",
  "version": "3.12.0",
  "description": "Replicate old YouTube look and features within the modern layout!",
  "permissions": [
    "activeTab",
    "storage"
  ],
  "optional_permissions": [
    "downloads"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/16.png",
      "32": "images/32.png",
      "48": "images/48.png",
      "128": "images/128.png"
    }
  },
  "icons": {
    "16": "images/16.png",
    "32": "images/32.png",
    "48": "images/48.png",
    "128": "images/128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "exclude_matches": [
        "*://*.youtube.com/embed/*"
      ],
      "css": [
        "styles.css"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "exclude_matches": [
        "*://*.youtube.com/embed/*"
      ],
      "js": [
        "helpers/logger.js",
        "helpers/enums.js",
        "helpers/states.js",
        "initial-setup.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "exclude_matches": [
        "*://*.youtube.com/embed/*"
      ],
      "js": [
        "main.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "images/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d4c0962-e9ff-4cad-8039-9a8b80d9b8b6}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "manifest_version": 2
}