diff --git a/packages/vue-component/plugin/tag-handler.js b/packages/vue-component/plugin/tag-handler.js
index 3ff9ba1..5ddbb67 100644
--- a/packages/vue-component/plugin/tag-handler.js
+++ b/packages/vue-component/plugin/tag-handler.js
@@ -72,6 +72,12 @@ VueComponentTagHandler = class VueComponentTagHandler {
 
       maps.push(generateSourceMap(inputFilePath, source, script, getLineNumber(source, sfcBlock.start)))
 
+      // treating the <script> default as if it were `lang="js"`
+      // since some tools (like meteor-vuetify-loader) require to have the attribute present to work
+      if (sfcBlock.type === 'script' && !sfcBlock.lang) {
+        sfcBlock.lang = 'js'
+      }
+      
       // Lang
       if (sfcBlock.lang !== undefined) {
         let lang = sfcBlock.lang