From d33bbbdb7f05f3d66fa750f4f6a13c758a60d814 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E3=81=AA=E3=81=A4=E3=81=8D?= <i@ntk.me>
Date: Fri, 15 Apr 2022 10:33:14 -0700
Subject: [PATCH] Do not output `no units` when converting SassNumber to String
 (#115)

---
 lib/src/value/number.ts | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/src/value/number.ts b/lib/src/value/number.ts
index b1c303ed..422d5347 100644
--- a/lib/src/value/number.ts
+++ b/lib/src/value/number.ts
@@ -613,10 +613,16 @@ export class SassNumber extends Value {
         }
       }
 
+      const unitSize = newNumerators.size + newDenominators.size;
       return valueError(
         `Expected $this to have ${
-          newNumerators.size + newDenominators.size > 1 ? 'units' : 'unit'
-        } ${unitString(newNumerators, newDenominators)}.`,
+          unitSize === 0
+            ? 'no units'
+            : `unit${unitSize > 1 ? 's' : ''} ${unitString(
+                newNumerators,
+                newDenominators
+              )}`
+        }.`,
         params.name
       );
     };
@@ -684,7 +690,7 @@ function unitString(
   denominators: List<string>
 ): string {
   if (numerators.isEmpty() && denominators.isEmpty()) {
-    return 'no units';
+    return '';
   }
 
   if (denominators.isEmpty()) {