fix compatibility with @babel/core option check when inputSourceMap n…

…ull (#538)
babel · Feb 25, 2018 · 23b3b97 · 23b3b97
1 parent 638e433
commit 23b3b97
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/index.js b/src/index.js
@@ -127,7 +127,7 @@ module.exports = function(source, inputSourceMap) {
 
   const defaultOptions = {
     metadataSubscribers: [],
-    inputSourceMap: inputSourceMap,
+    inputSourceMap: inputSourceMap || undefined,
     sourceRoot: process.cwd(),
     filename: filename,
     cacheIdentifier: JSON.stringify({