Examine source code of Flow | Youtube and Social Media Blocker

{
  "manifest_version": 3,
  "name": "Flow",
  "version": "2.3",
  "description": "Block distractions on YouTube, Reddit, and X",
  "author": "Flow Extension",
  "homepage_url": "https://github.com/alanwtom/Flow",
  "browser_specific_settings": {
    "gecko": {
      "id": "flow@alanwtom",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://*.reddit.com/*",
    "*://*.x.com/*",
    "*://*.twitter.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "youtube-blocker.js"
      ],
      "css": [
        "youtube-blocker.css"
      ]
    },
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "social-blocker.js"
      ],
      "css": [
        "social-blocker.css"
      ]
    },
    {
      "matches": [
        "*://*.x.com/*",
        "*://*.twitter.com/*"
      ],
      "js": [
        "x-blocker.js"
      ],
      "css": [
        "x-blocker.css"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/bird.png",
      "48": "images/bird.png",
      "128": "images/bird.png"
    }
  },
  "icons": {
    "16": "images/bird.png",
    "48": "images/bird.png",
    "128": "images/bird.png"
  }
}