fix: avoid bootstrapping variables if user has not supplied any

improve compilation time when not using variables by ~20s on avg

fixes #133

Author: johnleider

util/helpers.js

@@ -40,6 +40,9 @@ function mergeRules (api, opt, ext) {
 
   addImports(api, 'variables', data, end)
 
+  // If user isn't supplying variables, avoid prepending data
+  if (!data.length) return
+
   // Inject Vuetify styles at the end of user supplied
   data.push(`@import '~vuetify/src/styles/styles.sass${end}`)