update pug task

Author: aleks-coderiver

generators/app/templates/gulp/tasks/pug.js

@@ -1,42 +1,31 @@
-var gulp        = require('gulp');
-var pug         = require('gulp-pug');
-var plumber     = require('gulp-plumber');
-var changed     = require('gulp-changed');
-var gulpif      = require('gulp-if');
-var frontMatter = require('gulp-front-matter');
-var prettify    = require('gulp-prettify');
-var config      = require('../config');
-
-function renderHtml(onlyChanged) {
-    return gulp
-        .src([config.src.templates + '/[^_]*.pug'])
-        .pipe(plumber({ errorHandler: config.errorHandler }))
-        .pipe(gulpif(onlyChanged, changed(config.dest.html, { extension: '.html' })))
-        .pipe(frontMatter({ property: 'data' }))
-        .pipe(pug())
-        .pipe(prettify({
-            indent_size: 2,
-            wrap_attributes: 'auto', // 'force'
-            preserve_newlines: true,
-            // unformatted: [],
-            end_with_newline: true
-        }))
-        .pipe(gulp.dest(config.dest.html));
+import gulp from 'gulp';
+import pug from 'gulp-pug';
+import plumber from 'gulp-plumber'
+import changed from 'gulp-changed';
+import gulpif from 'gulp-if';
+import frontMatter from 'gulp-front-matter';
+import prettify from 'gulp-prettify';
+import config from '../config';
+
+const renderHtml = (onlyChanged) => {
+  return gulp
+    .src([config.src.templates + '/[^_]*.pug'])
+    .pipe(plumber({ errorHandler: config.errorHandler }))
+    .pipe(gulpif(onlyChanged, changed(config.dest.html, { extension: '.html' })))
+    .pipe(frontMatter({ property: 'data' }))
+    .pipe(pug())
+    .pipe(prettify({
+      indent_size: 2,
+      wrap_attributes: 'auto', // 'force'
+      preserve_newlines: true,
+      // unformatted: [],
+      end_with_newline: true
+    }))
+    .pipe(gulp.dest(config.dest.html));
 }
 
-gulp.task('pug', function() {
-    return renderHtml();
-});
-
-gulp.task('pug:changed', function() {
-    return renderHtml(true);
-});
-
-gulp.task('pug:watch', function() {
-    gulp.watch([config.src.templates + '/**/_*.pug'], ['pug']);
-    gulp.watch([config.src.templates + '/**/[^_]*.pug'], ['pug:changed']);
-});
-
+gulp.task('pug', () => renderHtml());
+gulp.task('pug:changed', () => renderHtml(true));
 
 const build = gulp => gulp.parallel('pug');
 const watch = gulp => {