Simple js gulp task

jsTask.js

import gulp from 'gulp';
import eslint from 'gulp-eslint';
import babel from 'gulp-babel';
import sourcemaps from 'gulp-sourcemaps';

const localConfig = {
  src: './src/js/**/*.js',
  dest: './build/js/'
};

gulp.task('js', () =>
  gulp.src(localConfig.src)
    .pipe(eslint())
    .pipe(eslint.format())
    .pipe(sourcemaps.init())
      .pipe(babel())
    .pipe(sourcemaps.write())
    .pipe(gulp.dest(localConfig.dest))
);