diff --git a/web_src/js/modules/errors.ts b/web_src/js/modules/errors.ts
index 95a171693a..4b6504dc99 100644
--- a/web_src/js/modules/errors.ts
+++ b/web_src/js/modules/errors.ts
@@ -2,10 +2,12 @@
 import {html} from '../utils/html.ts';
 import type {Intent} from '../types.ts';
 
+/** Extract a message string from an unknown caught value. */
 export function errorMessage(err: unknown): string {
   return (err as Error)?.message || String(err);
 }
 
+/** Extract a name string from an unknown caught value. */
 export function errorName(err: unknown): string {
   return (err as Error)?.name ?? '';
 }