With type module
Adds ‘type=module’ to the javascript_include_tag. By default, use_type_module is false.
How it looks (preview)
<!DOCTYPE html>
<html lang="en" class="govuk-template">
<head>
<meta charset="utf-8" />
<title>A page title - GOV.UK Publishing</title>
<meta name="robots" content="noindex,nofollow,noimageindex">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta name="csrf-param" content="authenticity_token" />
<meta name="csrf-token" content="_zNh_BfRrcgAmAfh7p5kIVhLtrYarnNsaoZu04KFG8V4_P8aLAzK7T3dfGSgy2hs3wDFBKk4BpS5zeNPBU4Kng" />
<link rel="icon" type="image/x-icon" href="/assets/govuk_publishing_components/favicon-production-4a099aebc01225747f057d807a1d2a3c9bda85d3a5f7d8239902de140da9f451.png" />
<link rel="stylesheet" href="/assets/application-9b3ace74cb86c0c8b681a747d853fbeaa581a5ff6d6090028c0d0318f44d0f51.css" media="all" />
</head>
<body class="gem-c-layout-for-admin govuk-template__body">
<script nonce="CYsADAoHTA4MXimvz36eBg==">
//<![CDATA[
document.body.className += ' js-enabled' + ('noModule' in HTMLScriptElement.prototype ? ' govuk-frontend-supported' : '');
//]]>
</script>
<!-- You probably want to use the header, main & footer components here -->
<script src="/assets/application-72fa0b47f220b9ae9eda922a6c3ec742f93135f982156d445bd12e438c3d8876.js" type="module"></script>
</body>
</html>
How to call this example
<%= render "govuk_publishing_components/components/layout_for_admin", {
environment: "production",
product_name: "Publishing",
browser_title: "A page title",
use_type_module: true
} do %>
<!-- You probably want to use the header, main & footer components here -->
<% end %>