anchor.diff:  
   In the *client/main.ts* file, add the following code:
   
  -```ts
  +```js
   import { init } from "meteor/elm-app";
   import { Meteor } from 'meteor/meteor';
   
  
positive.code: 
  But because we want to *Type* things as much as possible, let's create this *index.ts* like this:
  
  ```ts
  import './main.scss'
  const { Elm } = require('./src/Main.elm')
  
  
negative.code: If you remember, we have defined an interface `Ports` in the file *meteor-elm-app/packages/elm-app/app/index.ts*.
  It is time to add some definitions:
  
  ```js
  interface Todo {
    id: string;
    value: string;
  