Examine source code of Content filter

{
  "manifest_version": 3,
  "author": "Lidrekon",
  "name": "__MSG_title__",
  "description": "__MSG_manifest_desc__",
  "version": "2.7.8",
  "browser_specific_settings": {
    "gecko": {
      "id": "{186eacd0-90e0-4e87-929c-97431430d4e9}",
      "strict_min_version": "109.0"
    }
  },
  "icons": {
    "16": "images/icon-16.png",
    "48": "images/icon-48.png",
    "128": "images/icon-128.png"
  },
  "permissions": [
    "tabs",
    "history",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "html/block.html",
        "html/options.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_icon": {
      "19": "images/icon-19.png",
      "38": "images/icon-38.png"
    },
    "default_popup": "html/actionPopup.html",
    "default_title": "__MSG_title__"
  },
  "homepage_url": "https://lidrekon.ru/block/",
  "options_ui": {
    "page": "html/options.html",
    "open_in_tab": true
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'",
    "sandbox": "sandbox allow-scripts allow-forms allow-popups allow-modals; script-src 'self'"
  },
  "default_locale": "ru",
  "content_scripts": [
    {
      "css": [
        "css/none.css"
      ],
      "js": [
        "js/content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_start"
    },
    {
      "css": [
        "css/yes.css"
      ],
      "js": [
        "js/contentBlockPage.js"
      ],
      "matches": [
        "*://lidrekon.ru/*"
      ]
    }
  ]
}