add list option to nodes

packages/core/src/utils/isList.ts

@@ -0,0 +1,13 @@
+import { Extensions } from '../types'
+import splitExtensions from './splitExtensions'
+
+export default function isList(name: string, extensions: Extensions) {
+  const { nodeExtensions } = splitExtensions(extensions)
+  const extension = nodeExtensions.find(item => item.name === name)
+
+  if (!extension) {
+    return false
+  }
+
+  return extension.list
+}