diff --git a/package-lock.json b/package-lock.json
index 5fc1351c51f..8cc48045ffb 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -83,7 +83,7 @@
         "@types/yauzl": "^2.10.0",
         "@types/yazl": "^2.4.2",
         "@typescript-eslint/utils": "^8.45.0",
-        "@typescript/native-preview": "^7.0.0-dev.20260130",
+        "@typescript/native-preview": "^7.0.0-dev.20260306",
         "@vscode/component-explorer": "^0.1.1-19",
         "@vscode/component-explorer-cli": "^0.1.1-15",
         "@vscode/gulp-electron": "1.40.1",
@@ -157,7 +157,7 @@
         "ts-loader": "^9.5.1",
         "tsec": "0.2.7",
         "tslib": "^2.6.3",
-        "typescript": "^6.0.0-dev.20260130",
+        "typescript": "^6.0.0-dev.20260306",
         "typescript-eslint": "^8.45.0",
         "util": "^0.12.4",
         "webpack": "^5.105.0",
@@ -3034,28 +3034,28 @@
       }
     },
     "node_modules/@typescript/native-preview": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview/-/native-preview-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-lvt9sECmBkrABxl3rMNRAX2unzhYcoNhlTyR7rOvbyM//QTXKUctVD7ByWBvk02et2caUUwIWq2vnygaeW8Mew==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview/-/native-preview-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-4m7cOjtKu+iLazWW5MuJuI2ZZMkQkS42+GxN6FVdja1nL0t47l1wpaTnzUa1Ny9Xa0opIJ7psPAMBKYAPKbCKA==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
         "tsgo": "bin/tsgo.js"
       },
       "optionalDependencies": {
-        "@typescript/native-preview-darwin-arm64": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-darwin-x64": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-linux-arm": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-linux-arm64": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-linux-x64": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-win32-arm64": "7.0.0-dev.20260130.1",
-        "@typescript/native-preview-win32-x64": "7.0.0-dev.20260130.1"
+        "@typescript/native-preview-darwin-arm64": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-darwin-x64": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-linux-arm": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-linux-arm64": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-linux-x64": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-win32-arm64": "7.0.0-dev.20260306.1",
+        "@typescript/native-preview-win32-x64": "7.0.0-dev.20260306.1"
       }
     },
     "node_modules/@typescript/native-preview-darwin-arm64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-darwin-arm64/-/native-preview-darwin-arm64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-Jo5kVoxaewKPn/3bKWyUB/gPR+Tjhj6isLc8VshV4OyFX4n6pkvVyk3ANivl7Kwmiv3WGKGUotbZ71DKCZATwA==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-darwin-arm64/-/native-preview-darwin-arm64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-4vuh4VlPydMS/nymDzjJIKDk3dntnEEB5UzyJV9mM4kxF5+geFgJih1DTtZS3qVafhHLB3e4l8omtvGftMnb8g==",
       "cpu": [
         "arm64"
       ],
@@ -3067,9 +3067,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-darwin-x64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-darwin-x64/-/native-preview-darwin-x64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-dR0fjdcLykfiDOIKjZMGqPBHVl9Dd/C+jFU43Wr3dcPFPFf1oVYsaWAZBSkTXnN9QP8i0/ZV+ZUr1gDjoi3x0Q==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-darwin-x64/-/native-preview-darwin-x64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-qxYfv0aM4KCZPEe584KIjT5sO4uR+xdyuQXX5tXbnH1UoksIz7bvJ9KUgRloS/q/ww0f8UjPS2+27LnRA4y7ig==",
       "cpu": [
         "x64"
       ],
@@ -3081,9 +3081,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-linux-arm": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-arm/-/native-preview-linux-arm-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-wnx4bY/1u006U67fEkPtPVZ65VYMLgkFqOadGyrUxhtveR5WbbgFUuUBES0mPxvzS4ToZzn94jhcnAvN8VOTcA==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-arm/-/native-preview-linux-arm-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-8gRAFx0ExDWHOmphl8mzBrSoGWnLWDU4VpxkPRsWqaJpHVbjr9Yk2QkuJNIaDmF6q44eJmW/huSiObmHTbZ1UQ==",
       "cpu": [
         "arm"
       ],
@@ -3095,9 +3095,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-linux-arm64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-arm64/-/native-preview-linux-arm64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-P/1YTpIiFd2pPtHt4sKEmUTaKf1xvuuiV0TvhQ7n2gDYskNjZ66iWCC9w7okjgsmWE9JLh/IRrNcb9FKVk3SHw==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-arm64/-/native-preview-linux-arm64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-8G0BKvTkE+eKX1tSnyKeDaf3bWPWY7OI77SMipagCAyYi06v4gxx+IVE3Px7W7kLX2Wqp1MjWDXu2N76wfJtXQ==",
       "cpu": [
         "arm64"
       ],
@@ -3109,9 +3109,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-linux-x64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-x64/-/native-preview-linux-x64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-OgHVjivuOS22WIZvIm+Pnm7yqFLwonkIrBOxRdew/pPwVGLQVSo+bQ+RocQDj2VFYxXcHs2yXwCk3PDmwLIYYg==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-linux-x64/-/native-preview-linux-x64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-rsJV3Z9J/zYCEtcqvm+WfLAml3i1OAyMEUn0hja7i8C0kzE+tXKXzsJ0+I1TrSU5O7hHvqlLTvueBoCoM4aL4g==",
       "cpu": [
         "x64"
       ],
@@ -3123,9 +3123,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-win32-arm64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-win32-arm64/-/native-preview-win32-arm64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-f/DUxQtIWkZq0eUjZHFmaSxterO/ccu1NxFk0L/Oqj7AfjWVDCqrLVgZJKjvwcG5TEb5AVt7GMUpGEAYZQiUvg==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-win32-arm64/-/native-preview-win32-arm64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-US1WsIu9IukaFzM+w8wt0fIAkmk2WtxeVuk8nkbrnH9S3ax39r0J4ikMNZSXEJE0VMxhXJoymzfWxhj3s9yW/Q==",
       "cpu": [
         "arm64"
       ],
@@ -3137,9 +3137,9 @@
       ]
     },
     "node_modules/@typescript/native-preview-win32-x64": {
-      "version": "7.0.0-dev.20260130.1",
-      "resolved": "https://registry.npmjs.org/@typescript/native-preview-win32-x64/-/native-preview-win32-x64-7.0.0-dev.20260130.1.tgz",
-      "integrity": "sha512-Isr051Cq8RbXOUMYYmwLYw8yBGaEG/Zp0sp7HNeYhVVkc3/3KeveEqCk29q1QRwiBr7HnApdzJP7f+lSZk8gmg==",
+      "version": "7.0.0-dev.20260306.1",
+      "resolved": "https://registry.npmjs.org/@typescript/native-preview-win32-x64/-/native-preview-win32-x64-7.0.0-dev.20260306.1.tgz",
+      "integrity": "sha512-MlneT0RWS9Zdb8XoWvHsUgmnMJu6K3S0BXRu5ZgUYjcbQKlkz+Z87aUB8eX8qnDFd9csJcMp3+ZrgQ/LKVGP1g==",
       "cpu": [
         "x64"
       ],
@@ -19702,9 +19702,9 @@
       "dev": true
     },
     "node_modules/typescript": {
-      "version": "6.0.0-dev.20260130",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.0-dev.20260130.tgz",
-      "integrity": "sha512-flWwLX5Xzh7to9d46u3LXfVDq9F0L0FtgnsYcx/SksqP05uHBIPnWfB6wWOZphTkb7GRSRKU13X/zBHmbzhXXg==",
+      "version": "6.0.0-dev.20260306",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-6.0.0-dev.20260306.tgz",
+      "integrity": "sha512-ssxgK3/0yA2LEW23KzSNtnqSL9zDaVGTesx2S3EN+v8kqkPScFTin7S63KfQ4UDZGZGcvBgHCEoEz7t7v2yR8Q==",
       "dev": true,
       "license": "Apache-2.0",
       "bin": {
diff --git a/package.json b/package.json
index 3f5bcc61b9c..1b7eb4bc018 100644
--- a/package.json
+++ b/package.json
@@ -153,7 +153,7 @@
     "@types/yauzl": "^2.10.0",
     "@types/yazl": "^2.4.2",
     "@typescript-eslint/utils": "^8.45.0",
-    "@typescript/native-preview": "^7.0.0-dev.20260130",
+    "@typescript/native-preview": "^7.0.0-dev.20260306",
     "@vscode/component-explorer": "^0.1.1-19",
     "@vscode/component-explorer-cli": "^0.1.1-15",
     "@vscode/gulp-electron": "1.40.1",
@@ -227,7 +227,7 @@
     "ts-loader": "^9.5.1",
     "tsec": "0.2.7",
     "tslib": "^2.6.3",
-    "typescript": "^6.0.0-dev.20260130",
+    "typescript": "^6.0.0-dev.20260306",
     "typescript-eslint": "^8.45.0",
     "util": "^0.12.4",
     "webpack": "^5.105.0",
diff --git a/src/vs/editor/common/languages.ts b/src/vs/editor/common/languages.ts
index f141c78d98e..33e90ab7f75 100644
--- a/src/vs/editor/common/languages.ts
+++ b/src/vs/editor/common/languages.ts
@@ -826,7 +826,7 @@ export class SelectedSuggestionInfo {
 	) {
 	}
 
-	public equals(other: SelectedSuggestionInfo) {
+	public equals(other: SelectedSuggestionInfo): boolean {
 		return Range.lift(this.range).equalsRange(other.range)
 			&& this.text === other.text
 			&& this.completionKind === other.completionKind
diff --git a/src/vs/monaco.d.ts b/src/vs/monaco.d.ts
index fc9c2da70f5..1e2394bb65a 100644
--- a/src/vs/monaco.d.ts
+++ b/src/vs/monaco.d.ts
@@ -5259,7 +5259,7 @@ declare namespace monaco.editor {
 	export const EditorOptions: {
 		acceptSuggestionOnCommitCharacter: IEditorOption<EditorOption.acceptSuggestionOnCommitCharacter, boolean>;
 		acceptSuggestionOnEnter: IEditorOption<EditorOption.acceptSuggestionOnEnter, 'on' | 'off' | 'smart'>;
-		accessibilitySupport: IEditorOption<EditorOption.accessibilitySupport, AccessibilitySupport>;
+		accessibilitySupport: IEditorOption<EditorOption.accessibilitySupport, any>;
 		accessibilityPageSize: IEditorOption<EditorOption.accessibilityPageSize, number>;
 		allowOverflow: IEditorOption<EditorOption.allowOverflow, boolean>;
 		allowVariableLineHeights: IEditorOption<EditorOption.allowVariableLineHeights, boolean>;
@@ -5322,7 +5322,7 @@ declare namespace monaco.editor {
 		foldingMaximumRegions: IEditorOption<EditorOption.foldingMaximumRegions, number>;
 		unfoldOnClickAfterEndOfLine: IEditorOption<EditorOption.unfoldOnClickAfterEndOfLine, boolean>;
 		fontFamily: IEditorOption<EditorOption.fontFamily, string>;
-		fontInfo: IEditorOption<EditorOption.fontInfo, FontInfo>;
+		fontInfo: IEditorOption<EditorOption.fontInfo, any>;
 		fontLigatures2: IEditorOption<EditorOption.fontLigatures, string>;
 		fontSize: IEditorOption<EditorOption.fontSize, number>;
 		fontWeight: IEditorOption<EditorOption.fontWeight, string>;
@@ -5362,7 +5362,7 @@ declare namespace monaco.editor {
 		pasteAs: IEditorOption<EditorOption.pasteAs, Readonly<Required<IPasteAsOptions>>>;
 		parameterHints: IEditorOption<EditorOption.parameterHints, Readonly<Required<IEditorParameterHintOptions>>>;
 		peekWidgetDefaultFocus: IEditorOption<EditorOption.peekWidgetDefaultFocus, 'tree' | 'editor'>;
-		placeholder: IEditorOption<EditorOption.placeholder, string>;
+		placeholder: IEditorOption<EditorOption.placeholder, string | undefined>;
 		definitionLinkOpensInPeek: IEditorOption<EditorOption.definitionLinkOpensInPeek, boolean>;
 		quickSuggestions: IEditorOption<EditorOption.quickSuggestions, InternalQuickSuggestionsOptions>;
 		quickSuggestionsDelay: IEditorOption<EditorOption.quickSuggestionsDelay, number>;
diff --git a/src/vs/platform/remote/browser/browserSocketFactory.ts b/src/vs/platform/remote/browser/browserSocketFactory.ts
index eafeef861a1..d558e4eef58 100644
--- a/src/vs/platform/remote/browser/browserSocketFactory.ts
+++ b/src/vs/platform/remote/browser/browserSocketFactory.ts
@@ -43,7 +43,7 @@ export interface IWebSocket {
 	readonly onError: Event<unknown>;
 
 	traceSocketEvent?(type: SocketDiagnosticsEventType, data?: VSBuffer | Uint8Array | ArrayBuffer | ArrayBufferView | unknown): void;
-	send(data: ArrayBuffer | ArrayBufferView): void;
+	send(data: ArrayBuffer | ArrayBufferView<ArrayBuffer>): void;
 	close(): void;
 }
 
@@ -182,7 +182,7 @@ class BrowserWebSocket extends Disposable implements IWebSocket {
 		}));
 	}
 
-	send(data: ArrayBuffer | ArrayBufferView): void {
+	send(data: ArrayBuffer | ArrayBufferView<ArrayBuffer>): void {
 		if (this._isClosed) {
 			// Refuse to write data to closed WebSocket...
 			return;
@@ -254,7 +254,7 @@ class BrowserSocket implements ISocket {
 	}
 
 	public write(buffer: VSBuffer): void {
-		this.socket.send(buffer.buffer);
+		this.socket.send(buffer.buffer as Uint8Array<ArrayBuffer>);
 	}
 
 	public end(): void {