text: import { gql } from '@apollo/client';
  
  export const LOGIN_USER = gql`
    mutation login($email: String!, $password: String!) {
      login(email: $email, password: $password) {
        token
        user {
          _id
          username
        }
      }
    }
  `;
  
  export const ADD_USER = gql`
    mutation addUser($username: String!, $email: String!, $password: String!) {
      addUser(username: $username, email: $email, password: $password) {
        token
        user {
          _id
          username
          email
        }
      }
    }
  `;
  
  export const SAVE_BOOK = gql`
    mutation saveBook($newBook: ID! ){
      saveBook(newBook: $newBook) {
          _id
          username
          email
          savedBooks{
              bookId
              authors
              description
              title
              image
              link
          }
      }
    }
  `;
  
  export const REMOVE_BOOK = gql`
    mutation removeBook($bookId: ID!){
        removeBook(bookId: $bookId) {
            _id
            username
            email
            savedBooks{
                bookId
                authors
                description
                title
                image
                link
            }
        }
    }
  `;