Add ts.worker for ESM variant

src/ts.worker.ts

@@ -0,0 +1,15 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import * as worker from 'monaco-editor-core/esm/vs/editor/editor.worker';
+import { TypeScriptWorker } from './tsWorker';
+
+self.onmessage = () => {
+	// ignore the first message
+	worker.initialize((ctx, createData) => {
+		return new TypeScriptWorker(ctx, createData)
+	});
+};

src/tsconfig.esm.json

@@ -1,6 +1,7 @@
 {
   "compilerOptions": {
     "module": "esnext",
+    "moduleResolution": "node",
     "outDir": "../release/esm",
     "target": "es5",
     "lib": [

src/tsconfig.json

@@ -1,6 +1,7 @@
 {
   "compilerOptions": {
     "module": "amd",
+    "moduleResolution": "node",
     "outDir": "../release/dev",
     "target": "es5",
     "lib": [