diff --git a/src/components/hooks/dates.ts b/src/components/hooks/dates.ts
index f4eef4e53e..c295e53296 100644
--- a/src/components/hooks/dates.ts
+++ b/src/components/hooks/dates.ts
@@ -1,3 +1,12 @@
+/**
+ * Hooks for date-fns localized formatters.
+ *
+ * Our app supports some languages that are not included in date-fns by
+ * default, in which case it will fall back to English.
+ *
+ * {@link https://github.com/date-fns/date-fns/blob/main/docs/i18n.md}
+ */
+
 import React from 'react'
 import {formatDistance, Locale} from 'date-fns'
 import {
@@ -18,8 +27,13 @@ import {
   zhTW,
 } from 'date-fns/locale'
 
+// eslint-disable-next-line @typescript-eslint/no-unused-vars
+import {AppLanguage} from '#/locale/languages'
 import {useLanguagePrefs} from '#/state/preferences'
 
+/**
+ * {@link AppLanguage}
+ */
 const locales: Record<string, Locale> = {
   ca,
   de,
@@ -38,6 +52,10 @@ const locales: Record<string, Locale> = {
   zhTW,
 }
 
+/**
+ * Returns a localized `formatDistance` function.
+ * {@link formatDistance}
+ */
 export function useFormatDistance() {
   const {appLanguage} = useLanguagePrefs()
   return React.useCallback<typeof formatDistance>(