Gulpfile

gistfile1.js

// Default task, run when just writing 'gulp' in the terminal
gulp.task('default', gulp.series(
      gulp.series('jekyll:dev'),
      gulp.parallel('styles', 'javascript', 'fonts', 'images'),
      gulp.series('inject:head:dev', 'inject:footer:dev'),
      gulp.series('serve')
));

gulp.task('build', gulp.series(
      gulp.series('jekyll:prod'),
      gulp.parallel('styles', 'javascript', 'fonts', 'images'),
      gulp.series('inject:head', 'inject:footer')
));