In graphql-yoga, how to import backtick object correctly?

Question

I have graphql express app. Right now, I would like to import the object below from schema.ts to index.ts

export default `{
  type Query {
    hi: String
  }  
}`

when I import them into the index.ts, the object changed to the one below

{
  type Query {
    hi: String
  }
}

Because of that, my app does not find the query. how can I import the object correctly?