title: Gulp stuck on "Starting 'sass'..."
body: <p>I'm having trouble getting <strong>gulp watch</strong> to work. When I run it, it successfully outputs CSS to the /css folder, but then it gets hung up, not progressing past the "sass" step. Is there something wrong with my gulpfile?</p>
  
  <p><strong>gulpfile.js</strong></p>
  
  <pre><code>    var gulp = require('gulp'),
      livereload = require('gulp-livereload'),
      gulpIf = require('gulp-if'),
      sass = require('gulp-sass'),
      autoprefixer = require('gulp-autoprefixer'),
      sourcemaps = require('gulp-sourcemaps');
  
  gulp.task('sass', function () {
    gulp.src('./sass/**/*.scss')
      .pipe(sourcemaps.init())
          .pipe(sass({outputStyle: 'compressed'}).on('error', sass.logError))
          .pipe(autoprefixer('last 2 version'))
      .pipe(sourcemaps.write('./'))
      .pipe(gulp.dest('./css'));
  });
  
  gulp.task('watch', function(){
      livereload.listen();
  
      gulp.watch('./sass/**/*.scss', gulp.series('sass'));
      gulp.watch(['./css/style.css', './**/*.html.twig', './js/*.js'], function (files){
          livereload.changed(files)
      });
  });
  </code></pre>
  
  <p><strong>Terminal output:</strong></p>
  
  <pre><code>[13:53:47] Using gulpfile ~/Documents/Jurassic/project/drupal/web/themes/custom/nekken/gulpfile.js
  [13:53:47] Starting 'watch'...
  [13:53:54] Starting 'sass'...
  </code></pre>