settings: Optimize data chunk

There's ~4000 empty keys, so just need to refactor a few locations to ignore missing
keys and we can substantially reduce the size of the chunk.

Author: slusarz

components/SettingsComponent.vue

@@ -22,10 +22,10 @@ const d = Object.fromEntries(Object.entries(data).filter(([k, v]) =>
 	/* Filter entries (by plugin or tag). */
 	((!props.plugin && !tag) ||
 	 (props.plugin &&
-	  (v.plugin && v.plugin.includes(props.plugin))) ||
+	  v.plugin?.includes(props.plugin)) ||
 	 (tag && tag.find((t) =>
-	  (v.plugin && v.plugin.includes(t)) ||
-	  (v.tags.includes(t)))
+	  v.plugin?.includes(t) ||
+	  v.tags?.includes(t))
 	 )) &&
 	/* Apply filter. */
 	((filter == 'all') ||
@@ -88,21 +88,21 @@ const d = Object.fromEntries(Object.entries(data).filter(([k, v]) =>
        <span class="comma" v-for="v in v.values" v-html="v.url" />
       </td>
      </tr>
-     <tr v-if="v.values_enum.length">
+     <tr v-if="v.values_enum?.length">
       <th>Allowed Values</th>
       <td>
        <span class="comma" v-for="v in v.values_enum.values()"><code>{{ v }}</code></span>
       </td>
      </tr>
-     <tr v-if="v.dependencies.length">
+     <tr v-if="v.dependencies?.length">
       <th>Dependencies</th>
       <td>
        <ul>
         <li v-for="v in v.dependencies" v-html="v" />
        </ul>
       </td>
      </tr>
-     <tr v-if="v.seealso.length">
+     <tr v-if="v.seealso?.length">
       <th>See Also</th>
       <td>
        <ul>

data/settings.js

@@ -2131,8 +2131,7 @@ fts_header_includes {
 	fts_header_includes: {
 		plugin: 'fts',
 		values: setting_types.BOOLLIST,
-		seealso: [ 'fts_header_excludes' ],
-		text: ``
+		seealso: [ 'fts_header_excludes' ]
 	},
 
 	fts_search_timeout: {

lib/settings.js

@@ -1,5 +1,6 @@
 import { getVitepressMd } from './markdown.js'
 import { loadData, normalizeArrayData } from './utility.js'
+import cleanDeep from 'clean-deep'
 
 /* List of Dovecot settings value types. */
 export const setting_types = {
@@ -217,14 +218,22 @@ async function normalizeSettings(settings) {
 			}
 		}
 
-		v.text = md.render(v.text.trim())
+		if (v.text) {
+			v.text = md.render(v.text.trim())
+		}
 	}
 
 	return data
 }
 
 export async function loadSettings() {
-	return await normalizeSettings(
-		structuredClone((await loadData('settings')).settings)
+	return cleanDeep(
+		await normalizeSettings(
+			structuredClone((await loadData('settings')).settings)
+		),
+		// Clean empty arrays and null values.
+		// Maintain empty string (""), since it is used for
+		// certain default settings.
+		{ emptyStrings: false }
 	)
 }