diff --git a/extensions/typescript/src/extension.ts b/extensions/typescript/src/extension.ts
index ed9f93b082c..d9a1eb85244 100644
--- a/extensions/typescript/src/extension.ts
+++ b/extensions/typescript/src/extension.ts
@@ -5,27 +5,13 @@
 
 import * as vscode from 'vscode';
 import { CommandManager } from './utils/commandManager';
-import { ReloadTypeScriptProjectsCommand, SelectTypeScriptVersionCommand, ReloadJavaScriptProjectsCommand, RestartTsServerCommand, OpenTsServerLogCommand, TypeScriptGoToProjectConfigCommand, JavaScriptGoToProjectConfigCommand, LanguageDescription, TypeScriptServiceClientHost } from './typescriptMain';
+import { ReloadTypeScriptProjectsCommand, SelectTypeScriptVersionCommand, ReloadJavaScriptProjectsCommand, RestartTsServerCommand, OpenTsServerLogCommand, TypeScriptGoToProjectConfigCommand, JavaScriptGoToProjectConfigCommand, TypeScriptServiceClientHost } from './typescriptMain';
 import TypeScriptTaskProviderManager from './features/taskProvider';
 import { getContributedTypeScriptServerPlugins } from './utils/plugins';
 import * as ProjectStatus from './utils/projectStatus';
 import * as languageModeIds from './utils/languageModeIds';
 import * as languageConfigurations from './utils/languageConfigurations';
-
-export const standardLanguageDescriptions: LanguageDescription[] = [
-	{
-		id: 'typescript',
-		diagnosticSource: 'ts',
-		modeIds: [languageModeIds.typescript, languageModeIds.typescriptreact],
-		configFile: 'tsconfig.json'
-	}, {
-		id: 'javascript',
-		diagnosticSource: 'js',
-		modeIds: [languageModeIds.javascript, languageModeIds.javascriptreact],
-		configFile: 'jsconfig.json'
-	}
-];
-
+import { standardLanguageDescriptions } from './utils/languageDescription';
 
 export function activate(context: vscode.ExtensionContext): void {
 	const plugins = getContributedTypeScriptServerPlugins();
diff --git a/extensions/typescript/src/typescriptMain.ts b/extensions/typescript/src/typescriptMain.ts
index c585d7e1289..85b74c9455c 100644
--- a/extensions/typescript/src/typescriptMain.ts
+++ b/extensions/typescript/src/typescriptMain.ts
@@ -35,14 +35,7 @@ import FormattingConfigurationManager from './features/formattingConfigurationMa
 import * as languageConfigurations from './utils/languageConfigurations';
 import { CommandManager, Command } from './utils/commandManager';
 import DiagnosticsManager from './features/diagnostics';
-
-export interface LanguageDescription {
-	id: string;
-	diagnosticSource: string;
-	modeIds: string[];
-	configFile?: string;
-	isExternal?: boolean;
-}
+import { LanguageDescription } from './utils/languageDescription';
 
 export class ReloadTypeScriptProjectsCommand implements Command {
 	public readonly id = 'typescript.reloadProjects';
diff --git a/extensions/typescript/src/utils/languageDescription.ts b/extensions/typescript/src/utils/languageDescription.ts
new file mode 100644
index 00000000000..5ac2f55483f
--- /dev/null
+++ b/extensions/typescript/src/utils/languageDescription.ts
@@ -0,0 +1,27 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+import * as languageModeIds from './languageModeIds';
+
+export interface LanguageDescription {
+	id: string;
+	diagnosticSource: string;
+	modeIds: string[];
+	configFile?: string;
+	isExternal?: boolean;
+}
+
+export const standardLanguageDescriptions: LanguageDescription[] = [
+	{
+		id: 'typescript',
+		diagnosticSource: 'ts',
+		modeIds: [languageModeIds.typescript, languageModeIds.typescriptreact],
+		configFile: 'tsconfig.json'
+	}, {
+		id: 'javascript',
+		diagnosticSource: 'js',
+		modeIds: [languageModeIds.javascript, languageModeIds.javascriptreact],
+		configFile: 'jsconfig.json'
+	}
+];