Example of working around gulpfile.js error in this blog post: https://codegaze.github.io/2016/01/09/a-jekyll-workflow-with-gulp/

gulpfile.js

// Require all the things
var gulp = require('gulp'),
  sass = require('gulp-sass'),
  gutil = require('gulp-util'),
  plumber = require('gulp-plumber'),
  rename = require('gulp-rename'),
  minifyCSS = require('gulp-clean-css'),
  prefixer = require('gulp-autoprefixer'),
  connect = require('gulp-connect');
cp = require('child_process');

// Set the path variables
var base_path = './',
  src = base_path + '_dev/src',
  dist = base_path + 'assets',
  paths = {
    js: src + '/js/*.js',
    scss: [src + '/sass/*.scss',
      src + '/sass/**/* .scss',
      src + '/sass/**/**/*.scss'
    ],
    jekyll: ['index.html', '_posts/*', '_layouts/*', '_includes/*', 'assets/*', 'assets/**/*']
  };


// Compile sass to css
gulp.task('compile-sass', function() {
  return gulp.src(paths.scss)
    .pipe(plumber(function(error) {
      gutil.log(gutil.colors.red(error.message));
      gulp.task('compile-sass').emit('end');
    }))
    .pipe(sass())
    .pipe(prefixer('last 3 versions', 'ie 9'))
    .pipe(minifyCSS())
    .pipe(rename({ dirname: dist + '/css' }))
    .pipe(gulp.dest('./'));
});

// Rebuild Jekyll 
gulp.task('build-jekyll', function(code) {
  return cp.spawn('jekyll', ['build'], { stdio: 'inherit' })
    .on('error', function(error) { gutil.log(gutil.colors.red(error.message)) })
    .on('close', code);
})

// Setup Server
gulp.task('server', function() {
  connect.server({
    root: ['_site'],
    port: 4000
  });
})

// Watch files
gulp.task('watch', function() {
  gulp.watch(paths.scss, ['compile-sass']);
  gulp.watch(paths.jekyll, ['build-jekyll']);
});

// Start Everything with the default task
gulp.task('default', ['compile-sass', 'build-jekyll', 'server', 'watch']);

Hey @alexjlockwood I fixed some indentation stuff here otherwise, LGTM. I need to change the minify-css to clean-css in the post. A lot of things have changed since then (to Jekyll too). Thanks for helping out! :)