Examine source code of DuckDuckGo Search engine

{
  "manifest_version": 2,
  "name": "DuckDuckGo Search",
  "short_name": "duckduckgo-search",
  "description": "Adds DuckDuckGo as a search engine for Firefox.",
  "version": "1.0.1",
  "icons": {
    "128": "icons/128x128.png"
  },
  "chrome_settings_overrides": {
    "search_provider": {
      "name": "DuckDuckGo",
      "keyword": "ddg",
      "is_default": true,
      "favicon_url": "https://duckduckgo.com/favicon.ico",
      "search_url": "https://duckduckgo.com/?q={searchTerms}",
      "suggest_url": "https://duckduckgo.com/ac/?q={searchTerms}&type=list"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "58.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{a1e1ea62-2963-4904-82c4-fd3490919e5a}"
    }
  }
}