Examine source code of Block Site

{
  "version": "0.2.5",
  "name": "Block Site",
  "manifest_version": 3,
  "host_permissions": [
    "*://*/*"
  ],
  "description": "Easily block websites of your choice!",
  "homepage_url": "https://mybrowseraddon.com/block-site.html",
  "commands": {
    "_execute_action": {}
  },
  "options_ui": {
    "open_in_tab": true,
    "page": "data/options/options.html"
  },
  "permissions": [
    "storage",
    "contextMenus",
    "declarativeNetRequest"
  ],
  "web_accessible_resources": [
    {
      "matches": [
        "*://*/*"
      ],
      "resources": [
        "data/block/index.js",
        "data/block/index.css",
        "data/block/index.html"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "142.0",
      "id": "{07046613-1993-4b66-9dd1-9dd1ce581cb7}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "lib/config.js",
      "lib/chrome.js",
      "lib/runtime.js",
      "lib/netrequest.js",
      "lib/common.js"
    ]
  },
  "action": {
    "default_title": "Block Site",
    "default_icon": {
      "16": "data/icons/toolbar/16.png",
      "32": "data/icons/toolbar/32.png",
      "48": "data/icons/toolbar/48.png",
      "64": "data/icons/toolbar/64.png"
    }
  },
  "icons": {
    "16": "data/icons/16.png",
    "32": "data/icons/32.png",
    "48": "data/icons/48.png",
    "64": "data/icons/64.png",
    "128": "data/icons/128.png"
  }
}