From 745d8c8af474311dc59d515eae9d5f7bbc8d4111 Mon Sep 17 00:00:00 2001
From: Alexander Akait <4567934+alexander-akait@users.noreply.github.com>
Date: Tue, 22 Jul 2025 17:26:04 +0300
Subject: [PATCH] fix: types (#19720)

---
 lib/FileSystemInfo.js | 6 +++---
 types.d.ts            | 6 +++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/FileSystemInfo.js b/lib/FileSystemInfo.js
index 883bb9d17a6..88b1e246638 100644
--- a/lib/FileSystemInfo.js
+++ b/lib/FileSystemInfo.js
@@ -2172,9 +2172,9 @@ class FileSystemInfo {
 
 	/**
 	 * @param {number | null | undefined} startTime when processing the files has started
-	 * @param {Iterable<string> | null} files all files
-	 * @param {Iterable<string> | null} directories all directories
-	 * @param {Iterable<string> | null} missing all missing files or directories
+	 * @param {Iterable<string> | null | undefined} files all files
+	 * @param {Iterable<string> | null | undefined} directories all directories
+	 * @param {Iterable<string> | null | undefined} missing all missing files or directories
 	 * @param {SnapshotOptions | null | undefined} options options object (for future extensions)
 	 * @param {(err: WebpackError | null, snapshot: Snapshot | null) => void} callback callback function
 	 * @returns {void}
diff --git a/types.d.ts b/types.d.ts
index 2dd19e18bb6..037527bdd52 100644
--- a/types.d.ts
+++ b/types.d.ts
@@ -5656,9 +5656,9 @@ declare abstract class FileSystemInfo {
 	): void;
 	createSnapshot(
 		startTime: undefined | null | number,
-		files: null | Iterable<string>,
-		directories: null | Iterable<string>,
-		missing: null | Iterable<string>,
+		files: undefined | null | Iterable<string>,
+		directories: undefined | null | Iterable<string>,
+		missing: undefined | null | Iterable<string>,
 		options: undefined | null | SnapshotOptionsFileSystemInfo,
 		callback: (err: null | WebpackError, snapshot: null | Snapshot) => void
 	): void;