hextra/layouts/_partials/scripts/core.html

{{- $scriptsBody := slice }}
{{- range resources.Match "js/core/*.js" -}}
  {{ $scriptsBody = $scriptsBody | append (resources.ExecuteAsTemplate .Name $ .) }}
{{- end -}}

{{- $scripts := $scriptsBody | resources.Concat "js/main.js" -}}
{{- if hugo.IsProduction -}}
  {{- $scripts = $scripts | minify | fingerprint -}}
{{- end -}}
<script defer src="{{ $scripts.RelPermalink }}" integrity="{{ $scripts.Data.Integrity }}"></script>