I am using babel 6
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babelify
Babel browserify transform.

Installation
# Babel 7
$ npm install --save-dev babelify @babel/core

# Babel 6
$ npm install --save-dev babelify@8 babel-core




gulp-babel
Use next generation JavaScript, today, with Babel

# Babel 7
$ npm install --save-dev gulp-babel @babel/core @babel/preset-env

# Babel 6
$ npm install --save-dev gulp-babel@7 babel-core babel-preset-env