From 544d43286a6279b60797d2a5e9d202ba868a4819 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Fri, 26 May 2023 15:29:11 -0700
Subject: [PATCH] Fix fs.watch callback type for new @types/node (#54417)

---
 package-lock.json   | 12 ++++++------
 src/compiler/sys.ts |  4 ++--
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/package-lock.json b/package-lock.json
index c61ea61026cac..2f947e2288c1b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -816,9 +816,9 @@
             "dev": true
         },
         "node_modules/@types/node": {
-            "version": "20.2.4",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.2.4.tgz",
-            "integrity": "sha512-ni5f8Xlf4PwnT/Z3f0HURc3ZSw8UyrqMqmM3L5ysa7VjHu8c3FOmIo1nKCcLrV/OAmtf3N4kFna/aJqxsfEtnA==",
+            "version": "20.2.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.2.5.tgz",
+            "integrity": "sha512-JJulVEQXmiY9Px5axXHeYGLSjhkZEnD+MDPDGbCbIAbMslkKwmygtZFy1X6s/075Yo94sf8GuSlFfPzysQrWZQ==",
             "dev": true
         },
         "node_modules/@types/semver": {
@@ -5090,9 +5090,9 @@
             "dev": true
         },
         "@types/node": {
-            "version": "20.2.4",
-            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.2.4.tgz",
-            "integrity": "sha512-ni5f8Xlf4PwnT/Z3f0HURc3ZSw8UyrqMqmM3L5ysa7VjHu8c3FOmIo1nKCcLrV/OAmtf3N4kFna/aJqxsfEtnA==",
+            "version": "20.2.5",
+            "resolved": "https://registry.npmjs.org/@types/node/-/node-20.2.5.tgz",
+            "integrity": "sha512-JJulVEQXmiY9Px5axXHeYGLSjhkZEnD+MDPDGbCbIAbMslkKwmygtZFy1X6s/075Yo94sf8GuSlFfPzysQrWZQ==",
             "dev": true
         },
         "@types/semver": {
diff --git a/src/compiler/sys.ts b/src/compiler/sys.ts
index ace8ed10678dc..f0b07b429e33f 100644
--- a/src/compiler/sys.ts
+++ b/src/compiler/sys.ts
@@ -812,7 +812,7 @@ function createDirectoryWatcherSupportingRecursive({
 }
 
 /** @internal */
-export type FsWatchCallback = (eventName: "rename" | "change", relativeFileName: string | undefined, modifiedTime?: Date) => void;
+export type FsWatchCallback = (eventName: "rename" | "change", relativeFileName: string | undefined | null, modifiedTime?: Date) => void;
 /** @internal */
 export type FsWatch = (fileOrDirectory: string, entryKind: FileSystemEntryKind, callback: FsWatchCallback, recursive: boolean, fallbackPollingInterval: PollingInterval, fallbackOptions: WatchOptions | undefined) => FileWatcher;
 /** @internal */
@@ -1205,7 +1205,7 @@ export function createSystemWatchFunctions({
             }
         }
 
-        function callbackChangingToMissingFileSystemEntry(event: "rename" | "change", relativeName: string | undefined) {
+        function callbackChangingToMissingFileSystemEntry(event: "rename" | "change", relativeName: string | undefined | null) {
             // In some scenarios, file save operation fires event with fileName.ext~ instead of fileName.ext
             // To ensure we see the file going missing and coming back up (file delete and then recreated)
             // and watches being updated correctly we are calling back with fileName.ext as well as fileName.ext~