only record number ids

fixes #7381
webpack · May 24, 2018 · f026310 · f026310
1 parent 962cea5
commit f026310
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/lib/RecordIdsPlugin.js b/lib/RecordIdsPlugin.js
@@ -21,6 +21,7 @@ class RecordIdsPlugin {
 					if (!records.modules.byIdentifier) records.modules.byIdentifier = {};
 					if (!records.modules.usedIds) records.modules.usedIds = {};
 					for (const module of modules) {
+						if (typeof module.id !== "number") continue;
 						const identifier = portableIds
 							? identifierUtils.makePathsRelative(
 									compiler.context,
@@ -110,6 +111,7 @@ class RecordIdsPlugin {
 					if (!records.chunks.bySource) records.chunks.bySource = {};
 					const usedIds = new Set();
 					for (const chunk of chunks) {
+						if (typeof chunk.id !== "number") continue;
 						const name = chunk.name;
 						if (name) records.chunks.byName[name] = chunk.id;
 						const sources = getChunkSources(chunk);