diff --git a/lib/node/NodeWatchFileSystem.js b/lib/node/NodeWatchFileSystem.js
index 66526437874..1e537ef36ba 100644
--- a/lib/node/NodeWatchFileSystem.js
+++ b/lib/node/NodeWatchFileSystem.js
@@ -28,7 +28,7 @@ class NodeWatchFileSystem {
 	 * @param {Iterable<string>} missing watched exitance entries
 	 * @param {number} startTime timestamp of start time
 	 * @param {WatchOptions} options options object
-	 * @param {function(Error=, Map<string, FileSystemInfoEntry>, Map<string, FileSystemInfoEntry>, Set<string>, Set<string>): void} callback aggregated callback
+	 * @param {function(Error=, Map<string, FileSystemInfoEntry>, Set<string>, Set<string>): void} callback aggregated callback
 	 * @param {function(string, number): void} callbackUndelayed callback when the first change was detected
 	 * @returns {Watcher} a watcher
 	 */
diff --git a/lib/util/fs.js b/lib/util/fs.js
index 0efca048fda..5ae3a0d181c 100644
--- a/lib/util/fs.js
+++ b/lib/util/fs.js
@@ -78,7 +78,7 @@ const path = require("path");
  * @param {Iterable<string>} missing watched exitance entries
  * @param {number} startTime timestamp of start time
  * @param {WatchOptions} options options object
- * @param {function(Error=, Map<string, FileSystemInfoEntry | "ignore">, Map<string, FileSystemInfoEntry | "ignore">, Set<string>, Set<string>): void} callback aggregated callback
+ * @param {function(Error=, Map<string, FileSystemInfoEntry | "ignore">, Set<string>, Set<string>): void} callback aggregated callback
  * @param {function(string, number): void} callbackUndelayed callback when the first change was detected
  * @returns {Watcher} a watcher
  */
diff --git a/test/__snapshots__/StatsTestCases.basictest.js.snap b/test/__snapshots__/StatsTestCases.basictest.js.snap
index 6fc740bfc6a..0be38e3b85d 100644
--- a/test/__snapshots__/StatsTestCases.basictest.js.snap
+++ b/test/__snapshots__/StatsTestCases.basictest.js.snap
@@ -1292,7 +1292,7 @@ asset <CLR=32,BOLD>main.js</CLR> 84 bytes <CLR=32,BOLD>[emitted]</CLR> (name: ma
     <CLR=BOLD>0 entries tested</CLR>
     <CLR=BOLD>File info in cache: 1 timestamps 1 hashes 1 timestamp hash combinations</CLR>
     <CLR=BOLD>File timestamp hash combination snapshot optimization: 0% (0/1) entries shared via 0 shared snapshots (0 times referenced)</CLR>
-    <CLR=BOLD>Directory info in cache: 0 timestamps 0 hashes 0 timestamp hash combinations</CLR>
+    <CLR=BOLD>Directory info in cache: 1 timestamps 0 hashes 0 timestamp hash combinations</CLR>
     <CLR=BOLD>Managed items info in cache: 0 items</CLR>
 
 webpack x.x.x compiled <CLR=32,BOLD>successfully</CLR> in X ms"
@@ -2081,7 +2081,7 @@ LOG from webpack.FileSystemInfo
     0 entries tested
     File info in cache: 6 timestamps 6 hashes 6 timestamp hash combinations
     File timestamp hash combination snapshot optimization: 0% (0/6) entries shared via 0 shared snapshots (0 times referenced)
-    Directory info in cache: 0 timestamps 0 hashes 0 timestamp hash combinations
+    Directory info in cache: 6 timestamps 0 hashes 0 timestamp hash combinations
     Managed items info in cache: 0 items
 
 1970-04-20 12:42:42: webpack x.x.x compiled successfully in X ms (c7a4e3bf1797f14ec5d7)"
@@ -2457,7 +2457,7 @@ LOG from webpack.FileSystemInfo
     0 entries tested
     File info in cache: 6 timestamps 6 hashes 6 timestamp hash combinations
     File timestamp hash combination snapshot optimization: 0% (0/6) entries shared via 0 shared snapshots (0 times referenced)
-    Directory info in cache: 0 timestamps 0 hashes 0 timestamp hash combinations
+    Directory info in cache: 6 timestamps 0 hashes 0 timestamp hash combinations
     Managed items info in cache: 0 items
 
 1970-04-20 12:42:42: webpack x.x.x compiled successfully in X ms (c7a4e3bf1797f14ec5d7)"
diff --git a/types.d.ts b/types.d.ts
index 218e4727a36..bc183be1e7a 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -11655,9 +11655,8 @@ declare interface WatchFileSystem {
 		callback: (
 			arg0: undefined | Error,
 			arg1: Map<string, FileSystemInfoEntry | "ignore">,
-			arg2: Map<string, FileSystemInfoEntry | "ignore">,
-			arg3: Set<string>,
-			arg4: Set<string>
+			arg2: Set<string>,
+			arg3: Set<string>
 		) => void,
 		callbackUndelayed: (arg0: string, arg1: number) => void
 	) => Watcher;