Initialize fileTimestamps and contextTimestamps in Compilation

Mohsen Azimi · Mohsen Azimi · commit 77535dde7cd3 · 2018-03-28T10:10:28.000-07:00
diff --git a/lib/Compilation.js b/lib/Compilation.js
@@ -253,6 +253,8 @@ class Compilation extends Tapable {
 		this.childrenCounters = {};
 		this.usedChunkIds = null;
 		this.usedModuleIds = null;
+		this.fileTimestamps = undefined;
+		this.contextTimestamps = undefined;
 
 		this._buildingModules = new Map();
 		this._rebuildingModules = new Map();
