text: import gulp from 'gulp'
  import babel from 'gulp-babel'
  
  gulp.task('babel', () => {
    gulp.src('./src/*.js')
      .pipe(babel({stage: 0}))
      .pipe(gulp.dest('./lib'))
  })
  
  gulp.task('watch', () => {
    gulp.watch('./src/*.js', ['babel'])
  })
  
  gulp.task('build', ['babel'])
  
  gulp.task('default', ['build', 'watch'])
  