Added markdown rendering

static/js/lib/node_modules/preact/compat/client.d.ts

@@ -0,0 +1,13 @@
+// Intentionally not using a relative path to take advantage of
+// the TS version resolution mechanism
+import * as preact from 'preact';
+
+export function createRoot(container: preact.ContainerNode): {
+	render(children: preact.ComponentChild): void;
+	unmount(): void;
+};
+
+export function hydrateRoot(
+	container: preact.ContainerNode,
+	children: preact.ComponentChild
+): typeof createRoot;