Download object from S3 bucket

handleDownload.js

const { s3, GetObjectCommand } = require('./s3Client')

// convert a ReadableStream to a string
const streamToString = (stream) =>
  new Promise((resolve, reject) => {
    const chunks = []

    stream.on('data', (chunk) => chunks.push(chunk))
    stream.on('error', reject)
    // stream.on('end', () => resolve(Buffer.concat(chunks).toString('utf8')))
    stream.once('end', () => resolve(chunks.join('')))
  })

const handleDownload = async (objectKey) => {
  const params = {
    Bucket: 'dev-ts-apimg',
    Key: `profiles/${objectKey}`
  }

  try {
    const command = new GetObjectCommand(params)
    const data = await s3.send(command)
    const bodyContents = await streamToString(data.Body)

    return bodyContents
  } catch (err) {
    console.error(err)
  }

}

module.exports = handleDownload