From 9f77df0bff2d1fd9d7f8216f7fca35a28ad08713 Mon Sep 17 00:00:00 2001
From: RMidhunSuresh <hi@midhun.dev>
Date: Thu, 10 Mar 2022 17:24:32 +0530
Subject: [PATCH] Match regex only if declaration is a variable

---
 postcss/css-compile-variables.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/postcss/css-compile-variables.js b/postcss/css-compile-variables.js
index cf2b451d..d5e78352 100644
--- a/postcss/css-compile-variables.js
+++ b/postcss/css-compile-variables.js
@@ -55,9 +55,11 @@ function resolveDerivedVariable(decl, {variables, derive}) {
 }
 
 function extractAlias(decl) {
-    const wholeVariable = decl.value.match(/var\(--(.+)\)/)?.[1];
-    if (decl.prop.startsWith("--") && wholeVariable) {
-        aliasMap.set(decl.prop, wholeVariable);
+    if (decl.variable) {
+        const wholeVariable = decl.value.match(/var\(--(.+)\)/)?.[1];
+        if (wholeVariable) {
+            aliasMap.set(decl.prop, wholeVariable);
+        }
     }
 }