aws-s3-upload.js

const AWS = require("aws-sdk");
const s3 = new AWS.S3({ apiVersion: "2006-03-01" });
const fs = require("fs");

AWS.config.update({
  accessKeyId: "",
  secretAccessKey: "",
  region: "ap-southeast-1",
  Bucket: "mobile-ayaplus-backend-dev",
})

const params = {
  Bucket: `mobile-ayaplus-backend-dev`,
  Key: `ayapay-merchant/mytestimage.png`,
  Body: fs.createReadStream(`./mytestimage.png`),
  ContentType: 'image/png',
  StorageClass: 'STANDARD_IA'
};

s3.upload(params, function(err, result) {
  if (err) {
      throw err;
  }
  console.log(`File uploaded successfully. ${JSON.stringify(result)}`);
});