Type Definitions for File Upload Mutations

typeDef.js

const typeDefs = gql`  
  type File {
    filename: String!
    mimetype: String!
    encoding: String!
  }
  
  type Query {
    _ : Boolean // Added here to satisfy requirement of having at least one query defined
  }
  
  type Mutation {
    singleUpload(file: Upload!): File!,
    singleUploadStream(file: Upload!): File!
  }
`;

Error: Unknown type "Upload". Did you mean "Float"?
please

import { GraphQLUpload } from 'graphql-upload';

const { makeExecutableSchema } = require('graphql-tools');
const { GraphQLUpload } = require('graphql-upload');

const schema = makeExecutableSchema({
  typeDefs: /* GraphQL */ `
    scalar Upload
  `,
  resolvers: {
    Upload: GraphQLUpload,
  },
});