ES6 Transpilers

Sat Aug 06 2016

ES6 Transpilers

What is a Transpiler

A source-to-source compiler, transcompiler or transpiler is a type of compiler that takes the source code of a program written in one programming language as its input and produces the equivalent source code in another programming language. A source-to-source compiler translates between programming languages that operate at approximately the same level of abstraction, while a traditional compiler translates from a higher level programming language to a lower level programming language. wiki

List of ES6 Transpilers

  1. Babel: To transpile ES6 into ES5 for static builds
  2. Babelify: To incorporate babel into your Gulp, Grunt, or npm run build process
  3. Traceur compiler: ES6 features > ES5. Includes classes, generators, promises, destructuring patterns, default parameters & more.
  4. es6ify: Traceur compiler wrapped as a Browserify v2 transform

ES6 to ES5 Transpilation Example

For this example we are using Babel’s live transpiler to see the code in action.

ES6 Code

import config from './config/env'
import app from './config/express'

// listen on port config.port
app.listen(config.port, () => {
  debug(`server started on port ${config.port} (${config.env})`)

export default app

ES5 Converted

'use strict'

Object.defineProperty(exports, '__esModule', {
  value: true

var _env = require('./config/env')

var _env2 = _interopRequireDefault(_env)

var _express = require('./config/express')

var _express2 = _interopRequireDefault(_express)

function _interopRequireDefault(obj) {
  return obj && obj.__esModule ? obj : { default: obj }

// listen on port config.port
_express2.default.listen(_env2.default.port, function () {
    'server started on port ' +
      _env2.default.port +
      ' (' +
      _env2.default.env +

exports.default = _express2.default


Leave a comment

To make a comment, please send an e-mail using the button below. Your e-mail address won't be shared and will be deleted from our records after the comment is published. If you don't want your real name to be credited alongside your comment, please specify the name you would like to use. If you would like your name to link to a specific URL, please share that as well. Thank you.

Comment via email
Nikhil M
Nikhil M

Entrepreneur / Privacy Freak / Humanist / Blockchain / Ethereum / Elixir / Digital Security / Online Privacy

Tags Recent Blogs