var gulp_uglify = require('gulp-uglify'),
    gulp = require('gulp'),
    gulp_rename = require('gulp-rename'),
    babel = require('gulp-babel');

gulp.task('default',function(){
  gulp.src('./js/index.js')
  .pipe(babel())
  .pipe(gulp_uglify())
  .pipe(gulp_rename('index.min.js'))
  .pipe(gulp.dest('./min'));
});