Gulp less error handling

gulpfile.js

'use strict';

var gulp = require('gulp');
var less = require('gulp-less');
var sourcemaps = require('gulp-sourcemaps');
var browserSync = require('browser-sync').create();
var rigger = require('gulp-rigger');
var autoprefixer = require('gulp-autoprefixer');

// variant 1: without `return`
gulp.task('styles', function () {
    gulp.src('./less/**/*.less')
    .pipe(sourcemaps.init())
    .pipe(less())
      .on('error',console.log.bind(console))
    .pipe(autoprefixer())
    .pipe(sourcemaps.write('./maps'))
    .pipe(gulp.dest('./css'))
    .pipe(browserSync.stream());
});

// variant 2: with custom error function
gulp.task('styles', function () {
    return gulp.src('./less/**/*.less')
    .pipe(sourcemaps.init())
    .pipe(less())
      .on('error', handleError)
    .pipe(autoprefixer())
    .pipe(sourcemaps.write('./maps'))
    .pipe(gulp.dest('./css'))
    .pipe(browserSync.stream());
});

function handleError(err) {
  console.log(err.toString());
  this.emit('end');
}