check splitData for null and undefined

timse · timse · commit 9f055206860a · 2017-03-26T20:30:52.000+11:00
diff --git a/lib/optimize/AggressiveSplittingPlugin.js b/lib/optimize/AggressiveSplittingPlugin.js
@@ -91,15 +91,19 @@ class AggressiveSplittingPlugin {
 								newChunk._fromAggressiveSplitting = true;
 								if(j < savedSplits.length)
 									newChunk._fromAggressiveSplittingIndex = j;
-								if(splitData.id !== null) newChunk.id = splitData.id;
+								if(splitData.id !== null && splitData.id !== undefined) {
+									newChunk.id = splitData.id;
+								}
 								newChunk.origins = chunk.origins.map(copyWithReason);
 								chunk.origins = chunk.origins.map(copyWithReason);
 								return true;
 							} else {
 								if(j < savedSplits.length)
 									chunk._fromAggressiveSplittingIndex = j;
 								chunk.name = null;
-								if(splitData.id !== null) chunk.id = splitData.id;
+								if(splitData.id !== null && splitData.id !== undefined) {
+									chunk.id = splitData.id;
+								}
 							}
 						}
 					}
