Tag cloud code for a Hugo theme

tag-cloud.html

<div class="sidepanel">
    <div class="box tags">
      <div class="tagcloud">
			{{ $weights := 10 }}
			{{ $tags := $.Site.Taxonomies.categories.ByCount }}
			
			{{ range $key, $value := $tags }}
				{{ $.Scratch.Add $value.Name $value.Count }}
				{{ $.Scratch.SetInMap "buckets" (string $value.Count) $value.Count }}
			{{ end }}					
												
			{{ range $index, $value := $.Site.Taxonomies.categories.Alphabetical }}
			  <span
				  {{ $buckets := $.Scratch.GetSortedMapValues "buckets" }}
					{{ range $bucketIndex, $bucketEntry := sort $buckets }}
					  {{ $val := ($.Scratch.Get $value.Name) }}
						{{ if eq $bucketEntry $val }}
						  {{ if ge (sub (sub (len $buckets) 1) $bucketIndex) 0 }}
							  {{ $backIndex := sub (sub (len $buckets) 1) $bucketIndex }}
								{{ $weight := sub $weights $backIndex }}
								{{ if ge $weight 1 }}
								  class="weight-{{ $weight }}"
								{{ else }}
									class="weight-0"
								{{ end }}
							{{ else }}
									class="weight-0"
							{{ end }}
						{{ end }}								
					{{ end }}>
					<a href="/tags/{{ $value.Name | urlize }}">{{ lower (humanize $value.Name) }}</a>
				</span>
			{{ end }}
		</div>
	</div>
</div>