init from template

quartz/components/external.ts

@@ -0,0 +1,23 @@
+import { componentRegistry } from "./registry"
+import { QuartzComponent, QuartzComponentConstructor } from "./types"
+
+export function External<Options extends object | undefined>(
+  name: string,
+  options?: Options,
+): QuartzComponent {
+  const registered = componentRegistry.get(name)
+  if (!registered) {
+    throw new Error(
+      `External component "${name}" not found. ` +
+        `Make sure the plugin is installed and components are loaded before layouts are evaluated.`,
+    )
+  }
+
+  const { component } = registered
+
+  if (typeof component === "function") {
+    return (component as QuartzComponentConstructor<Options>)(options as Options)
+  }
+
+  return component as QuartzComponent
+}