HapiJs route + controller : S3 Bucket get signed request

get.s3.signed.request.hapi.js

const Boom = require('boom');
const Aws = require('aws-sdk');
const S3_BUCKET = process.env.S3_BUCKET_NAME;

server.routes = [
  {
    method: 'GET',
    path: '/upload/request',
    config: {
      handler: getS3SignedRequest,
      description: 'Get S3 signed url'
    }
  }
];

const getS3SignedRequest = (request, reply) => {
      
  const s3 = new Aws.S3();
  const fileName = request.query['file-name'];
  const fileType = request.query['file-type'];

  const s3Params = {
    Bucket: S3_BUCKET,
    Key: fileName,
    Expires: 60,
    ContentType: fileType,
    ACL: 'public-read'
  };

  s3.getSignedUrl('putObject', s3Params, (err, data) => {
    if (err){
      console.log(err);
      return reply(Boom.badRequest(err));
    }
    const returnData = {
      signedRequest: data,
      url: `https://${S3_BUCKET}.s3.amazonaws.com/${fileName}`
    };
    return reply(returnData).code(200);
  });
};

s3.signed.request.and.upload.front.js

import fetch from 'isomorphic-fetch'

export const uploadFile = (file) => {
  return getS3SingnedRequest(file)
    .then((response) => {
      return uploadFileToS3(file, response );
    });
};

const getS3SignedRequest = (file) => {
  return fetch(`/api/upload/request?file-name=${encodeURIComponent(file.name)}&file-type=${file.type}`, {
    credentials: 'same-origin',
    method: 'GET',
    headers: {
      'Accept': 'application/json',
      'Content-Type': 'application/json'
    }
  })
  .then(response => response.json())
  .catch((err) => {
    alert('Could not get signed URL.');
  })
};

const uploadFileToS3 = (file, signedObj) => {

  return fetch(signedObj.signedRequest, {
    method: 'PUT',
    body: file
  })
  .then((response) => {
    return signedObj.url;
  })
  .catch((err) => {
    alert('Could not upload file.');
  })
}