1 files changed, 0 insertions, 9 deletions
diff --git a/node_modules/source-map/lib/source-map-generator.js b/node_modules/source-map/lib/source-map-generator.js
index 508bcfbb..aff1e7fb 100644
--- a/node_modules/source-map/lib/source-map-generator.js
+++ b/node_modules/source-map/lib/source-map-generator.js
@@ -72,15 +72,6 @@ SourceMapGenerator.fromSourceMap =
       generator.addMapping(newMapping);
     });
     aSourceMapConsumer.sources.forEach(function (sourceFile) {
-      var sourceRelative = sourceFile;
-      if (sourceRoot !== null) {
-        sourceRelative = util.relative(sourceRoot, sourceFile);
-      }
-
-      if (!generator._sources.has(sourceRelative)) {
-        generator._sources.add(sourceRelative);
-      }
-
       var content = aSourceMapConsumer.sourceContentFor(sourceFile);
       if (content != null) {
         generator.setSourceContent(sourceFile, content);