fix: don't throw when there are no sources as part of the sourcemap

Closes #15
mattlewis92 · Apr 30, 2017 · 4fc5311 · 4fc5311
1 parent ab837d0
commit 4fc5311
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/util.js b/src/util.js
@@ -19,7 +19,7 @@ function fixWebpackFilePath(filePath) {
 
 function fixWebpackSourcePaths(sourceMap) {
   return Object.assign({}, sourceMap, {
-    sources: sourceMap.sources.map(source => {
+    sources: (sourceMap.sources || []).map(source => {
       source = fixWebpackFilePath(source);
       if (sourceMap.sourceRoot && source.startsWith(sourceMap.sourceRoot)) {
         source = source.replace(sourceMap.sourceRoot, '');