feature: the package installs the Router Manager, which is no longer a package of its own.

web/src/monaco.ts

@@ -0,0 +1,14 @@
+/**
+ * Monaco with its editor features and the syntax colours of its languages, without the language services, so the
+ * editor worker is the only worker; the Shell page's editor imports this module on demand.
+ */
+import * as monaco from 'monaco-editor/editor'
+import 'monaco-editor/features/register.all'
+import 'monaco-editor/languages/definitions/register.all'
+import EditorWorker from 'monaco-editor/editor/editor.worker?worker'
+
+self.MonacoEnvironment = {
+  getWorker: () => new EditorWorker(),
+}
+
+export default monaco