themes/docsy/layouts/search-index/single.html

{{- $.Scratch.Add "index" slice -}}
{{- range where .Site.Pages ".Params.exclude_search" "!=" true -}}
{{- $.Scratch.Add "index" (dict "title" .Title "ref" .Permalink "body" .Plain "excerpt" (.Summary | truncate 100)) -}}
{{- end -}}
{{- $.Scratch.Get "index" | jsonify -}}