should be @use not @import

Author: dsmmcken

packages/golden-layout/scss/GoldenLayout.module.scss

@@ -1,8 +1,8 @@
-@import './goldenlayout-dark-theme.scss';
+@use './goldenlayout-dark-theme.scss' as theme;
 
 // Exported variables for use in GoldenLayoutThemeExport.js
 /* stylelint-disable property-no-unknown */
 :export {
-  tab-height: $tab-height;
-  drag-border-width: $drag-border-width;
+  tab-height: theme.$tab-height;
+  drag-border-width: theme.$drag-border-width;
 }

packages/golden-layout/scss/goldenlayout-dark-theme.scss

@@ -2,6 +2,7 @@
 
 $tab-height: 28px;
 $drag-border-width: 5px;
+
 $close-button-height: 8px;
 $tab-font-size: 12px;