diff --git a/design-tokens/src/utils.ts b/design-tokens/src/utils.ts
index ead432393..c8f5ab58a 100644
--- a/design-tokens/src/utils.ts
+++ b/design-tokens/src/utils.ts
@@ -48,4 +48,7 @@ export const nonComponentTokens: string[] = [
   'focusIndicator',
 ];
 
+/**
+ * Convert a number to pixel value.
+ */
 export const numberToPixel = (value: number): string => `${value}px`;