diff --git a/src/tsconfig.strictNullChecks.json b/src/tsconfig.strictNullChecks.json
index 01130af7976..0f5dbd180e3 100644
--- a/src/tsconfig.strictNullChecks.json
+++ b/src/tsconfig.strictNullChecks.json
@@ -27,12 +27,14 @@
 		"./vs/base/browser/ui/centered/centeredViewLayout.ts",
 		"./vs/base/browser/ui/contextview/contextview.ts",
 		"./vs/base/browser/ui/countBadge/countBadge.ts",
-		"./vs/base/browser/ui/grid/gridview.ts",
 		"./vs/base/browser/ui/grid/grid.ts",
+		"./vs/base/browser/ui/grid/gridview.ts",
 		"./vs/base/browser/ui/highlightedlabel/highlightedLabel.ts",
 		"./vs/base/browser/ui/iconLabel/iconLabel.ts",
 		"./vs/base/browser/ui/keybindingLabel/keybindingLabel.ts",
 		"./vs/base/browser/ui/list/list.ts",
+		"./vs/base/browser/ui/list/listView.ts",
+		"./vs/base/browser/ui/list/listWidget.ts",
 		"./vs/base/browser/ui/list/rangeMap.ts",
 		"./vs/base/browser/ui/list/rowCache.ts",
 		"./vs/base/browser/ui/list/splice.ts",
@@ -73,12 +75,14 @@
 		"./vs/base/node/proxy.ts",
 		"./vs/base/node/request.ts",
 		"./vs/base/node/stats.ts",
-		// "./vs/base/node/storage.ts", see https://github.com/Microsoft/vscode/issues/62072
 		"./vs/base/node/stream.ts",
 		"./vs/base/parts/contextmenu/common/contextmenu.ts",
 		"./vs/base/parts/contextmenu/electron-browser/contextmenu.ts",
 		"./vs/base/parts/contextmenu/electron-main/contextmenu.ts",
+		"./vs/base/parts/ipc/electron-browser/ipc.electron-browser.ts",
+		"./vs/base/parts/ipc/electron-main/ipc.electron-main.ts",
 		"./vs/base/parts/ipc/node/ipc.cp.ts",
+		"./vs/base/parts/ipc/node/ipc.electron.ts",
 		"./vs/base/parts/ipc/node/ipc.net.ts",
 		"./vs/base/parts/ipc/node/ipc.ts",
 		"./vs/base/parts/ipc/test/node/testApp.ts",
@@ -467,8 +471,8 @@
 		"./vs/platform/update/electron-main/abstractUpdateService.ts",
 		"./vs/platform/update/electron-main/updateService.darwin.ts",
 		"./vs/platform/update/electron-main/updateService.linux.ts",
-		"./vs/platform/update/node/updateIpc.ts",
 		"./vs/platform/update/node/update.config.contribution.ts",
+		"./vs/platform/update/node/updateIpc.ts",
 		"./vs/platform/url/common/url.ts",
 		"./vs/platform/url/common/urlService.ts",
 		"./vs/platform/url/electron-main/electronUrlListener.ts",
@@ -602,8 +606,10 @@
 		"./vs/workbench/services/files/node/watcher/common.ts",
 		"./vs/workbench/services/files/node/watcher/nsfw/watcher.ts",
 		"./vs/workbench/services/files/node/watcher/nsfw/watcherIpc.ts",
+		"./vs/workbench/services/files/node/watcher/nsfw/watcherService.ts",
 		"./vs/workbench/services/files/node/watcher/unix/watcher.ts",
 		"./vs/workbench/services/files/node/watcher/unix/watcherIpc.ts",
+		"./vs/workbench/services/files/node/watcher/unix/watcherService.ts",
 		"./vs/workbench/services/files/node/watcher/win32/csharpWatcherService.ts",
 		"./vs/workbench/services/files/node/watcher/win32/watcherService.ts",
 		"./vs/workbench/services/files/test/electron-browser/utils.ts",
diff --git a/src/vs/base/parts/ipc/node/ipc.electron.ts b/src/vs/base/parts/ipc/node/ipc.electron.ts
index 5932eee4a73..831a27377c1 100644
--- a/src/vs/base/parts/ipc/node/ipc.electron.ts
+++ b/src/vs/base/parts/ipc/node/ipc.electron.ts
@@ -13,7 +13,7 @@ import { Event, Emitter } from 'vs/base/common/event';
  */
 
 export interface Sender {
-	send(channel: string, msg: string): void;
+	send(channel: string, msg: string | null): void;
 }
 
 export class Protocol implements IMessagePassingProtocol {