fix: source map generation with pathinfo

webpack-contrib · Aug 31, 2021 · 7771697 · 7771697
1 parent ed9c987
commit 7771697
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/src/index.js b/src/index.js
@@ -1002,9 +1002,11 @@ class MiniCssExtractPlugin {
  header = new RawSource(headerStr);
  }
 
- source.add(header);
-
  if (startsWithAtRuleImport) {
+ if (typeof header !== "undefined") {
+ externalsSource.add(header);
+ }
+
  // HACK for IE
  // http://stackoverflow.com/a/14676665/1458162
  if (module.media) {
@@ -1017,6 +1019,10 @@ class MiniCssExtractPlugin {
  externalsSource.add(content);
  externalsSource.add("\n");
  } else {
+ if (typeof header !== "undefined") {
+ source.add(header);
+ }
+
  if (module.media) {
  source.add(`@media ${module.media} {\n`);
  }