Revert "Upgrade linter and formatter to Ultracite" (#1226)

lib/utils.ts

@@ -5,11 +5,11 @@ import type {
   UIMessagePart,
 } from 'ai';
 import { type ClassValue, clsx } from 'clsx';
-import { formatISO } from 'date-fns';
 import { twMerge } from 'tailwind-merge';
 import type { DBMessage, Document } from '@/lib/db/schema';
 import { ChatSDKError, type ErrorCode } from './errors';
 import type { ChatMessage, ChatTools, CustomUIDataTypes } from './types';
+import { formatISO } from 'date-fns';
 
 export function cn(...inputs: ClassValue[]) {
   return twMerge(clsx(inputs));
@@ -66,17 +66,17 @@ export function generateUUID(): string {
 type ResponseMessageWithoutId = CoreToolMessage | CoreAssistantMessage;
 type ResponseMessage = ResponseMessageWithoutId & { id: string };
 
-export function getMostRecentUserMessage(messages: UIMessage[]) {
+export function getMostRecentUserMessage(messages: Array<UIMessage>) {
   const userMessages = messages.filter((message) => message.role === 'user');
   return userMessages.at(-1);
 }
 
 export function getDocumentTimestampByIndex(
-  documents: Document[],
+  documents: Array<Document>,
   index: number,
 ) {
-  if (!documents) { return new Date(); }
-  if (index > documents.length) { return new Date(); }
+  if (!documents) return new Date();
+  if (index > documents.length) return new Date();
 
   return documents[index].createdAt;
 }
@@ -84,11 +84,11 @@ export function getDocumentTimestampByIndex(
 export function getTrailingMessageId({
   messages,
 }: {
-  messages: ResponseMessage[];
+  messages: Array<ResponseMessage>;
 }): string | null {
   const trailingMessage = messages.at(-1);
 
-  if (!trailingMessage) { return null; }
+  if (!trailingMessage) return null;
 
   return trailingMessage.id;
 }