Examine source code of Pause Timer for YouTube

{
  "manifest_version": 3,
  "name": "Pause Timer for YouTube",
  "version": "2.0",
  "description": "Browser extension designed for efficiently consuming long-form content on YouTube.",
  "icons": {
    "16": "icons/logo_16.png",
    "48": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "action": {
    "default_title": "Pause Timer for YouTube",
    "default_icon": "icons/logo_128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs",
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "https://www.youtube.com/*",
    "https://music.youtube.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*",
        "https://music.youtube.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "icons/pause.svg"
      ],
      "matches": [
        "https://www.youtube.com/*",
        "https://music.youtube.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "pausetimerforyoutube@abelhabte.com",
      "strict_min_version": "109.0"
    }
  }
}