Search in meteor collection using Easy Search

I am new using meteor, and I try to create a simple search function using the easy search package.

In the terminal I do not generate any error and that is what I do not know what I’m doing wrong. I can not make me generate any results of the search.
I hope you can guide me in this problem, this is the code that I am using.

Packages installed

matteodem:easy-search
easy:search
easysearch:components
easysearch:core

client/main.html

<body>
  {{> searchBox}}
</body>

<template name="searchBox">
  {{> EasySearch.Input index=patientsIndex }}
  <ul>
    {{#EasySearch.Each index=patientsIndex }}
      <li>Name of the patient: {{name}}</li>
    {{/EasySearch.Each}}
  </ul>
</template>

client/main.js

import { Template } from 'meteor/templating';
import './main.html';

Template.searchBox.helpers({
  patientsIndex() {
    return PatientsIndex;
  }
});

lib/collection.js

Patients = new Mongo.Collection('patients');

PatientsIndex = new EasySearch.Index({
  collection: Patients,
  fields: ['name'],
  engine: new EasySearch.MongoDB()
});

try

collection.js
patientsIndex = new EasySearch.Index({
…blablabla
});

main.js
Template.searchBox.helpers({
patientsIndex() { return patientsIndex; }
});