udpate ListIndex.fromDocuments method signature

apps/simple/listIndex.ts

-import { Document, ListIndex, ListRetrieverMode } from "llamaindex";
+import {
+  Document,
+  ListIndex,
+  ListRetrieverMode,
+  serviceContextFromDefaults,
+  SimpleNodeParser,
+} from "llamaindex";
 import essay from "./essay";
 
 async function main() {
+  const serviceContext = serviceContextFromDefaults({
+    nodeParser: new SimpleNodeParser({
+      chunkSize: 40,
+    }),
+  });
   const document = new Document({ text: essay });
-  const index = await ListIndex.fromDocuments([document]);
+  const index = await ListIndex.fromDocuments({
+    documents: [document],
+    serviceContext,
+  });
   const queryEngine = index.asQueryEngine(ListRetrieverMode.LLM);
   const response = await queryEngine.aquery(
     "What did the author do growing up?"

packages/core/src/index/list/ListIndex.ts

@@ -74,11 +74,12 @@ export class ListIndex extends BaseIndex<IndexList> {
     });
   }
 
-  static async fromDocuments(
-    documents: Document[],
-    storageContext?: StorageContext,
-    serviceContext?: ServiceContext
-  ): Promise<ListIndex> {
+  static async fromDocuments(args: {
+    documents: Document[];
+    storageContext?: StorageContext;
+    serviceContext?: ServiceContext;
+  }): Promise<ListIndex> {
+    let { documents, storageContext, serviceContext } = args;
     storageContext = storageContext ?? (await storageContextFromDefaults({}));
     serviceContext = serviceContext ?? serviceContextFromDefaults({});
     const docStore = storageContext.docStore;