diff --git a/extensions/typescript-language-features/src/features/baseCodeLensProvider.ts b/extensions/typescript-language-features/src/features/baseCodeLensProvider.ts
index d5f2f0538d0..f63853d9ec8 100644
--- a/extensions/typescript-language-features/src/features/baseCodeLensProvider.ts
+++ b/extensions/typescript-language-features/src/features/baseCodeLensProvider.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import { escapeRegExp } from '../utils/regexp';
 import * as typeConverters from '../utils/typeConverters';
diff --git a/extensions/typescript-language-features/src/features/bufferSyncSupport.ts b/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
index 6a86599bcbe..5d874198b15 100644
--- a/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
+++ b/extensions/typescript-language-features/src/features/bufferSyncSupport.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { coalesce } from '../utils/arrays';
diff --git a/extensions/typescript-language-features/src/features/callHierarchy.ts b/extensions/typescript-language-features/src/features/callHierarchy.ts
index b5b4501d2ad..63ecc4801af 100644
--- a/extensions/typescript-language-features/src/features/callHierarchy.ts
+++ b/extensions/typescript-language-features/src/features/callHierarchy.ts
@@ -8,14 +8,16 @@ import { ITypeScriptServiceClient } from '../typescriptService';
 import * as typeConverters from '../utils/typeConverters';
 import API from '../utils/api';
 import { VersionDependentRegistration } from '../utils/dependentRegistration';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as path from 'path';
 import * as PConst from '../protocol.const';
 
 class TypeScriptCallHierarchySupport implements vscode.CallHierarchyProvider {
 	public static readonly minVersion = API.v380;
+
 	public constructor(
-		private readonly client: ITypeScriptServiceClient) { }
+		private readonly client: ITypeScriptServiceClient
+	) { }
 
 	public async prepareCallHierarchy(
 		document: vscode.TextDocument,
diff --git a/extensions/typescript-language-features/src/features/completions.ts b/extensions/typescript-language-features/src/features/completions.ts
index e0e9e558886..73db713846b 100644
--- a/extensions/typescript-language-features/src/features/completions.ts
+++ b/extensions/typescript-language-features/src/features/completions.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 import { ITypeScriptServiceClient, ServerResponse } from '../typescriptService';
 import API from '../utils/api';
diff --git a/extensions/typescript-language-features/src/features/documentHighlight.ts b/extensions/typescript-language-features/src/features/documentHighlight.ts
index 970a265f218..61477e06749 100644
--- a/extensions/typescript-language-features/src/features/documentHighlight.ts
+++ b/extensions/typescript-language-features/src/features/documentHighlight.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import { flatten } from '../utils/arrays';
 import * as typeConverters from '../utils/typeConverters';
@@ -53,4 +53,4 @@ export function register(
 ) {
 	return vscode.languages.registerDocumentHighlightProvider(selector,
 		new TypeScriptDocumentHighlightProvider(client));
-}
\ No newline at end of file
+}
diff --git a/extensions/typescript-language-features/src/features/documentSymbol.ts b/extensions/typescript-language-features/src/features/documentSymbol.ts
index 7145bbd47c3..866a86bfebc 100644
--- a/extensions/typescript-language-features/src/features/documentSymbol.ts
+++ b/extensions/typescript-language-features/src/features/documentSymbol.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import * as typeConverters from '../utils/typeConverters';
diff --git a/extensions/typescript-language-features/src/features/fileConfigurationManager.ts b/extensions/typescript-language-features/src/features/fileConfigurationManager.ts
index ff9245b4a5e..cad4e5196b9 100644
--- a/extensions/typescript-language-features/src/features/fileConfigurationManager.ts
+++ b/extensions/typescript-language-features/src/features/fileConfigurationManager.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { isTypeScriptDocument } from '../utils/languageModeIds';
diff --git a/extensions/typescript-language-features/src/features/fixAll.ts b/extensions/typescript-language-features/src/features/fixAll.ts
index c65dbf472a6..0f2e0cc78d2 100644
--- a/extensions/typescript-language-features/src/features/fixAll.ts
+++ b/extensions/typescript-language-features/src/features/fixAll.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { ConfigurationDependentRegistration, VersionDependentRegistration } from '../utils/dependentRegistration';
diff --git a/extensions/typescript-language-features/src/features/folding.ts b/extensions/typescript-language-features/src/features/folding.ts
index 079db3c66cb..f9f04296bdd 100644
--- a/extensions/typescript-language-features/src/features/folding.ts
+++ b/extensions/typescript-language-features/src/features/folding.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { coalesce } from '../utils/arrays';
diff --git a/extensions/typescript-language-features/src/features/formatting.ts b/extensions/typescript-language-features/src/features/formatting.ts
index 3caedf86f82..fbe1db881e0 100644
--- a/extensions/typescript-language-features/src/features/formatting.ts
+++ b/extensions/typescript-language-features/src/features/formatting.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import { ConfigurationDependentRegistration } from '../utils/dependentRegistration';
 import * as typeConverters from '../utils/typeConverters';
diff --git a/extensions/typescript-language-features/src/features/hover.ts b/extensions/typescript-language-features/src/features/hover.ts
index 5077f9648a0..ecc331d08b7 100644
--- a/extensions/typescript-language-features/src/features/hover.ts
+++ b/extensions/typescript-language-features/src/features/hover.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import { tagsMarkdownPreview } from '../utils/previewer';
 import * as typeConverters from '../utils/typeConverters';
@@ -58,4 +58,4 @@ export function register(
 ): vscode.Disposable {
 	return vscode.languages.registerHoverProvider(selector,
 		new TypeScriptHoverProvider(client));
-}
\ No newline at end of file
+}
diff --git a/extensions/typescript-language-features/src/features/implementationsCodeLens.ts b/extensions/typescript-language-features/src/features/implementationsCodeLens.ts
index 0ab2ae8719c..f7e325c819d 100644
--- a/extensions/typescript-language-features/src/features/implementationsCodeLens.ts
+++ b/extensions/typescript-language-features/src/features/implementationsCodeLens.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import { ConfigurationDependentRegistration } from '../utils/dependentRegistration';
diff --git a/extensions/typescript-language-features/src/features/organizeImports.ts b/extensions/typescript-language-features/src/features/organizeImports.ts
index 2e5871d1835..b5d492063f9 100644
--- a/extensions/typescript-language-features/src/features/organizeImports.ts
+++ b/extensions/typescript-language-features/src/features/organizeImports.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { Command, CommandManager } from '../utils/commandManager';
diff --git a/extensions/typescript-language-features/src/features/quickFix.ts b/extensions/typescript-language-features/src/features/quickFix.ts
index 879abf07f8b..5edaaa6b5df 100644
--- a/extensions/typescript-language-features/src/features/quickFix.ts
+++ b/extensions/typescript-language-features/src/features/quickFix.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { nulToken } from '../utils/cancellation';
diff --git a/extensions/typescript-language-features/src/features/refactor.ts b/extensions/typescript-language-features/src/features/refactor.ts
index c866665f041..11ff4002fbe 100644
--- a/extensions/typescript-language-features/src/features/refactor.ts
+++ b/extensions/typescript-language-features/src/features/refactor.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { nulToken } from '../utils/cancellation';
diff --git a/extensions/typescript-language-features/src/features/referencesCodeLens.ts b/extensions/typescript-language-features/src/features/referencesCodeLens.ts
index 106e13425d0..5e92ce06e01 100644
--- a/extensions/typescript-language-features/src/features/referencesCodeLens.ts
+++ b/extensions/typescript-language-features/src/features/referencesCodeLens.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 import { CachedResponse } from '../tsServer/cachedResponse';
 import { ITypeScriptServiceClient } from '../typescriptService';
diff --git a/extensions/typescript-language-features/src/features/rename.ts b/extensions/typescript-language-features/src/features/rename.ts
index aff2c508c53..886cf420b74 100644
--- a/extensions/typescript-language-features/src/features/rename.ts
+++ b/extensions/typescript-language-features/src/features/rename.ts
@@ -6,7 +6,7 @@
 import * as path from 'path';
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient, ServerResponse } from '../typescriptService';
 import API from '../utils/api';
 import * as typeConverters from '../utils/typeConverters';
diff --git a/extensions/typescript-language-features/src/features/semanticTokens.ts b/extensions/typescript-language-features/src/features/semanticTokens.ts
index 3c3aff06202..843fe17e56b 100644
--- a/extensions/typescript-language-features/src/features/semanticTokens.ts
+++ b/extensions/typescript-language-features/src/features/semanticTokens.ts
@@ -5,7 +5,7 @@
 
 import * as vscode from 'vscode';
 import { ITypeScriptServiceClient, ExecConfig, ServerResponse } from '../typescriptService';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { VersionDependentRegistration } from '../utils/dependentRegistration';
 import API from '../utils/api';
 
diff --git a/extensions/typescript-language-features/src/features/signatureHelp.ts b/extensions/typescript-language-features/src/features/signatureHelp.ts
index f7ad9ad7ee9..0f79a2aef8e 100644
--- a/extensions/typescript-language-features/src/features/signatureHelp.ts
+++ b/extensions/typescript-language-features/src/features/signatureHelp.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import * as Previewer from '../utils/previewer';
 import * as typeConverters from '../utils/typeConverters';
diff --git a/extensions/typescript-language-features/src/features/smartSelect.ts b/extensions/typescript-language-features/src/features/smartSelect.ts
index 3d05d1309a2..651535c5bcf 100644
--- a/extensions/typescript-language-features/src/features/smartSelect.ts
+++ b/extensions/typescript-language-features/src/features/smartSelect.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { VersionDependentRegistration } from '../utils/dependentRegistration';
@@ -54,4 +54,4 @@ export function register(
 ) {
 	return new VersionDependentRegistration(client, SmartSelection.minVersion, () =>
 		vscode.languages.registerSelectionRangeProvider(selector, new SmartSelection(client)));
-}
\ No newline at end of file
+}
diff --git a/extensions/typescript-language-features/src/features/tagClosing.ts b/extensions/typescript-language-features/src/features/tagClosing.ts
index 1123b175531..03b65c4ea2a 100644
--- a/extensions/typescript-language-features/src/features/tagClosing.ts
+++ b/extensions/typescript-language-features/src/features/tagClosing.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { ConditionalRegistration, ConfigurationDependentRegistration, VersionDependentRegistration } from '../utils/dependentRegistration';
diff --git a/extensions/typescript-language-features/src/features/updatePathsOnRename.ts b/extensions/typescript-language-features/src/features/updatePathsOnRename.ts
index 5f209f327e4..16b764d5256 100644
--- a/extensions/typescript-language-features/src/features/updatePathsOnRename.ts
+++ b/extensions/typescript-language-features/src/features/updatePathsOnRename.ts
@@ -6,7 +6,7 @@
 import * as path from 'path';
 import * as vscode from 'vscode';
 import * as nls from 'vscode-nls';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import API from '../utils/api';
 import { Delayer } from '../utils/async';
diff --git a/extensions/typescript-language-features/src/features/workspaceSymbols.ts b/extensions/typescript-language-features/src/features/workspaceSymbols.ts
index 857969be008..eb46f166df9 100644
--- a/extensions/typescript-language-features/src/features/workspaceSymbols.ts
+++ b/extensions/typescript-language-features/src/features/workspaceSymbols.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import * as fileSchemes from '../utils/fileSchemes';
 import { doesResourceLookLikeAJavaScriptFile, doesResourceLookLikeATypeScriptFile } from '../utils/languageDescription';
diff --git a/extensions/typescript-language-features/src/test/cachedResponse.test.ts b/extensions/typescript-language-features/src/test/cachedResponse.test.ts
index 919d5d4d03c..ae05f5d4426 100644
--- a/extensions/typescript-language-features/src/test/cachedResponse.test.ts
+++ b/extensions/typescript-language-features/src/test/cachedResponse.test.ts
@@ -6,7 +6,7 @@
 import * as assert from 'assert';
 import 'mocha';
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { CachedResponse } from '../tsServer/cachedResponse';
 import { ServerResponse } from '../typescriptService';
 
diff --git a/extensions/typescript-language-features/src/test/server.test.ts b/extensions/typescript-language-features/src/test/server.test.ts
index fd3210670ff..6803701e678 100644
--- a/extensions/typescript-language-features/src/test/server.test.ts
+++ b/extensions/typescript-language-features/src/test/server.test.ts
@@ -11,7 +11,7 @@ import { nulToken } from '../utils/cancellation';
 import Logger from '../utils/logger';
 import { TelemetryReporter } from '../utils/telemetry';
 import Tracer from '../utils/tracer';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 
 
 const NoopTelemetryReporter = new class implements TelemetryReporter {
diff --git a/extensions/typescript-language-features/src/tsServer/cachedResponse.ts b/extensions/typescript-language-features/src/tsServer/cachedResponse.ts
index 2fb9b542281..baa1a87a88a 100644
--- a/extensions/typescript-language-features/src/tsServer/cachedResponse.ts
+++ b/extensions/typescript-language-features/src/tsServer/cachedResponse.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ServerResponse } from '../typescriptService';
 
 type Resolve<T extends Proto.Response> = () => Promise<ServerResponse.Response<T>>;
diff --git a/extensions/typescript-language-features/src/tsServer/callbackMap.ts b/extensions/typescript-language-features/src/tsServer/callbackMap.ts
index a5ac85388bb..4e0ec375ddc 100644
--- a/extensions/typescript-language-features/src/tsServer/callbackMap.ts
+++ b/extensions/typescript-language-features/src/tsServer/callbackMap.ts
@@ -3,7 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ServerResponse } from '../typescriptService';
 
 export interface CallbackItem<R> {
diff --git a/extensions/typescript-language-features/src/tsServer/requestQueue.ts b/extensions/typescript-language-features/src/tsServer/requestQueue.ts
index 33dceef83f2..4b75833a1e9 100644
--- a/extensions/typescript-language-features/src/tsServer/requestQueue.ts
+++ b/extensions/typescript-language-features/src/tsServer/requestQueue.ts
@@ -3,7 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 
 export enum RequestQueueingType {
 	/**
@@ -78,4 +78,4 @@ export class RequestQueue {
 			arguments: args
 		};
 	}
-}
\ No newline at end of file
+}
diff --git a/extensions/typescript-language-features/src/tsServer/server.ts b/extensions/typescript-language-features/src/tsServer/server.ts
index b538083b7f7..e7265155d39 100644
--- a/extensions/typescript-language-features/src/tsServer/server.ts
+++ b/extensions/typescript-language-features/src/tsServer/server.ts
@@ -6,7 +6,7 @@
 import * as fs from 'fs';
 import * as stream from 'stream';
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ServerResponse, TypeScriptRequests } from '../typescriptService';
 import { Disposable } from '../utils/dispose';
 import { TelemetryReporter } from '../utils/telemetry';
diff --git a/extensions/typescript-language-features/src/tsServer/serverError.ts b/extensions/typescript-language-features/src/tsServer/serverError.ts
index 5c844b5f4da..99d13d8181e 100644
--- a/extensions/typescript-language-features/src/tsServer/serverError.ts
+++ b/extensions/typescript-language-features/src/tsServer/serverError.ts
@@ -3,7 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { escapeRegExp } from '../utils/regexp';
 import { TypeScriptVersion } from '../utils/versionProvider';
 
diff --git a/extensions/typescript-language-features/src/tsServer/spawner.ts b/extensions/typescript-language-features/src/tsServer/spawner.ts
index dfd71edfc51..5963a923b7d 100644
--- a/extensions/typescript-language-features/src/tsServer/spawner.ts
+++ b/extensions/typescript-language-features/src/tsServer/spawner.ts
@@ -7,7 +7,7 @@ import * as child_process from 'child_process';
 import * as path from 'path';
 import * as stream from 'stream';
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import API from '../utils/api';
 import { TsServerLogLevel, TypeScriptServiceConfiguration } from '../utils/configuration';
 import * as electron from '../utils/electron';
diff --git a/extensions/typescript-language-features/src/utils/codeAction.ts b/extensions/typescript-language-features/src/utils/codeAction.ts
index c45379e611a..df345e33517 100644
--- a/extensions/typescript-language-features/src/utils/codeAction.ts
+++ b/extensions/typescript-language-features/src/utils/codeAction.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { ITypeScriptServiceClient } from '../typescriptService';
 import * as typeConverters from './typeConverters';
 
@@ -42,4 +42,4 @@ export async function applyCodeActionCommands(
 		}
 	}
 	return true;
-}
\ No newline at end of file
+}
diff --git a/extensions/typescript-language-features/src/utils/previewer.ts b/extensions/typescript-language-features/src/utils/previewer.ts
index ca1da7b6e94..6a79f34b56a 100644
--- a/extensions/typescript-language-features/src/utils/previewer.ts
+++ b/extensions/typescript-language-features/src/utils/previewer.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 
 function getTagBodyText(tag: Proto.JSDocTagInfo): string | undefined {
 	if (!tag.text) {
diff --git a/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts b/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts
index fbf2868d101..6faf19eff48 100644
--- a/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts
+++ b/extensions/typescript-language-features/src/utils/snippetForFunctionCall.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 
 export function snippetForFunctionCall(
diff --git a/extensions/typescript-language-features/src/utils/tracer.ts b/extensions/typescript-language-features/src/utils/tracer.ts
index b8e5b189a8b..134ae13d5de 100644
--- a/extensions/typescript-language-features/src/utils/tracer.ts
+++ b/extensions/typescript-language-features/src/utils/tracer.ts
@@ -4,7 +4,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import Logger from './logger';
 
 enum Trace {
diff --git a/extensions/typescript-language-features/src/utils/tsconfig.ts b/extensions/typescript-language-features/src/utils/tsconfig.ts
index df29267c79c..b22b4e31aef 100644
--- a/extensions/typescript-language-features/src/utils/tsconfig.ts
+++ b/extensions/typescript-language-features/src/utils/tsconfig.ts
@@ -5,7 +5,7 @@
 
 import * as path from 'path';
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import { TypeScriptServiceConfiguration } from './configuration';
 
 export function isImplicitProjectConfigFile(configFileName: string) {
diff --git a/extensions/typescript-language-features/src/utils/typeConverters.ts b/extensions/typescript-language-features/src/utils/typeConverters.ts
index 2ccf306885f..0026eaa1232 100644
--- a/extensions/typescript-language-features/src/utils/typeConverters.ts
+++ b/extensions/typescript-language-features/src/utils/typeConverters.ts
@@ -8,7 +8,7 @@
  */
 
 import * as vscode from 'vscode';
-import * as Proto from '../protocol';
+import type * as Proto from '../protocol';
 import * as PConst from '../protocol.const';
 import { ITypeScriptServiceClient } from '../typescriptService';
 
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index bffb5530740..e895d13e822 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -98,7 +98,8 @@ declare module 'vscode' {
 	}
 
 	/**
-	 * Used as part of the ResolverResult if the extension has any candidate, published, or forwarded ports.
+	 * Used as part of the ResolverResult if the extension has any candidate,
+	 * published, or forwarded ports.
 	 */
 	export interface TunnelInformation {
 		/**