vercel__workflow/docs/lib/geistdocs/db.ts

import type { UIMessage } from '@ai-sdk/react';
import Dexie, { type EntityTable } from 'dexie';
import { title } from '@/geistdocs';

interface StoredMessage extends UIMessage {
  timestamp: number;
  sequence: number;
}

class ChatDatabase extends Dexie {
  messages!: EntityTable<StoredMessage, 'id'>;

  constructor() {
    super(title.replaceAll(' ', '').toLocaleLowerCase());
    this.version(1).stores({
      messages: 'id, timestamp, sequence',
    });
  }
}

export const db = new ChatDatabase();