text: const
      gulp = require('gulp'),
      pump = require('pump'),
      babel = require('gulp-babel'),
      plumber = require('gulp-plumber'),
      watch = require('gulp-watch');
  
  const task_build = function () {
      return pump([
          gulp.src('src/**/*js'),
          plumber(),
          babel(),
          gulp.dest('dist')
      ]);
  }
  
  const task_watch = function () {
      return pump([
          watch('src/**/*js'),
          plumber(),
          babel(),
          gulp.dest('dist')
      ]);
  }
  
  gulp.task('build', task_build);
  gulp.task('watch', task_watch);
  