repairs esm and amd build (#4950)

src/common/initialize.ts

@@ -0,0 +1,16 @@
+import * as worker from 'monaco-editor-core/esm/vs/editor/editor.worker.start';
+
+let initialized = false;
+
+export function isWorkerInitialized(): boolean {
+	return initialized;
+}
+
+export function initialize(callback: (ctx: any, createData: any) => any): void {
+	initialized = true;
+	self.onmessage = (m) => {
+		worker.start((ctx) => {
+			return callback(ctx, m.data);
+		});
+	};
+}