Examine source code of RosaDNScrypt

{
  "manifest_version": 3,
  "name": "RosaDNScrypt",
  "version": "1.2.7",
  "description": "Extensión que proporciona encriptación DNS con servidores sin registros y bloqueo avanzado de anuncios y rastreadores",
  "browser_specific_settings": {
    "gecko": {
      "id": "rosaacrata@protonmail.com",
      "strict_min_version": "113.0"
    }
  },
  "author": "RosaAcrata",
  "homepage_url": "https://github.com/rosaacrata/RosaDNScrypt",
  "developer": {
    "name": "RosaAcrata",
    "url": "https://github.com/rosaacrata/RosaDNScrypt"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    },
    "default_title": "RosaDNScrypt"
  },
  "permissions": [
    "storage",
    "proxy",
    "declarativeNetRequest",
    "webRequest",
    "dns",
    "scripting",
    "unlimitedStorage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "youtube_optimizer.js"
      ],
      "run_at": "document_end"
    }
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "rules/rules.json"
      },
      {
        "id": "cosmetic_filters",
        "enabled": true,
        "path": "rules/cosmetic.json"
      },
      {
        "id": "cookie_blockers",
        "enabled": true,
        "path": "rules/cookie.json"
      },
      {
        "id": "cosmetic_dom",
        "enabled": true,
        "path": "rules/cosmetic_dom.json"
      }
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}