Deno Casualdb error.

import { CasualDB } from "https://deno.land/x/casualdb/mod.ts";

// create an interface to describe the structure of your JSON
interface Schema {
	posts: Array<{
	  id: number;
	  title: string;
	  views: number;
	}>;
	user: {
	  name: string;
	};
  }
  
  const db = new CasualDB<Schema>(); // instantiate the db, casually 🤓
  await db.connect("./test-db.json"); // "connect" to the db (JSON file)
  
  // (optional) seed it with data, if starting with an empty db
  await db.seed({
	posts: [
	  { id: 1, title: "Post 1", views: 99 },
	  { id: 2, title: "Post 2", views: 30 },
	],
	user: { name: "Camp Vanilla" },
  });
  
  const posts = await db.get<Schema['posts']>('posts'); // pass the interface key in order for type-checking to work
  
  const postTitlesByViews = (
	posts
	  .sort(['views']) // sort by views (ascending)
	  .pick(['title']) // pick the title of every post
	  .value() // => ['Post 2', 'Post 1']
  );