fix: check if 'btoa' exists for old IE versions (#479)

webpack-contrib · Aug 17, 2020 · 732ef8b · 732ef8b
1 parent c623f27
commit 732ef8b
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/runtime/injectStylesIntoStyleTag.js b/src/runtime/injectStylesIntoStyleTag.js
@@ -187,7 +187,7 @@ function applyToTag(style, options, obj) {
     style.removeAttribute('media');
   }
 
-  if (sourceMap && btoa) {
+  if (sourceMap && typeof btoa !== 'undefined') {
     css += `\n/*# sourceMappingURL=data:application/json;base64,${btoa(
       unescape(encodeURIComponent(JSON.stringify(sourceMap)))
     )} */`;