upload from local to AWS_S3 (with gzip!)

AWS_KEYS.json

{
  "accessKeyId": "YOUR_AWS_ACCESSKEYID",
  "secretAccessKey": "YOUR_AWS_SECRETACCESSKEY"
}

index.js

const fs = require('fs');
const path = require('path');
const async = require('async');
const zlib = require('zlib');
const mime = require('mime-types');
const AWS = require('aws-sdk');

const { accessKeyId, secretAccessKey } = require('./AWS_KEYS.json');

const bucketName = 'YOUR_BUCKET_NAME';
const dirName = path.resolve(__dirname, '../dist');

AWS.config.update({ accessKeyId, secretAccessKey });

const s3 = new AWS.S3();

const files = fs.readdirSync(dirName);

async.map(files, (file, cb) => {
  const filePath = path.join(dirName, file);
  const _body = fs.readFileSync(filePath);
  const ext = path.extname(filePath);

  const options = {
    Bucket: bucketName,
    Key: file,
    Body: fs.readFileSync(filePath),
    ContentType: mime.lookup(filePath),
    ContentLength: Buffer.byteLength(_body),
    ACL: 'public-read'
  };

  // gzip化
  options.ContentEncoding = 'gzip';
  zlib.gzip(_body,  (err, binary) => {
    options.Body = binary;
    options.ContentLength = Buffer.byteLength(binary);
    s3.putObject(options, cb);
  });

}, (err, res) => {
  if (err) console.error('err', err);
  console.log('Successfully uploaded package.');
});