Update npm gulpfile to match gulp4

tasks/config/npm/gulpfile.js

@@ -2,13 +2,13 @@
             Set-up
 *******************************/
 
-var
+let
   gulp         = require('gulp'),
 
   // read user config to know what task to load
   config       = require('./tasks/config/user'),
 
-  // watch changes
+  // watch for file changes and build
   watch        = require('./tasks/watch'),
 
   // build all files
@@ -17,7 +17,7 @@ var
   buildCSS     = require('./tasks/build/css'),
   buildAssets  = require('./tasks/build/assets'),
 
-  // utility
+  // utility tasks
   clean        = require('./tasks/clean'),
   version      = require('./tasks/version'),
 
@@ -30,24 +30,30 @@ var
   watchRTL     = require('./tasks/rtl/watch')
 ;
 
+/* Simple Compatibility Fix for Gulp 3 Style Tasks */
+gulp.start = function(name) {
+  let task = gulp.task(name);
+  if(task) {
+    task();
+  }
+}
 
 /*******************************
              Tasks
 *******************************/
 
-gulp.task('default', false, [
-  'watch'
-]);
+gulp.task('default', watch);
+
+gulp.task('watch', watch);
 
-gulp.task('watch', 'Watch for site/theme changes', watch);
+gulp.task('build', build);
+gulp.task('build-javascript', buildJS);
+gulp.task('build-css', buildCSS);
+gulp.task('build-assets', buildAssets);
 
-gulp.task('build', 'Builds all files from source', build);
-gulp.task('build-javascript', 'Builds all javascript from source', buildJS);
-gulp.task('build-css', 'Builds all css from source', buildCSS);
-gulp.task('build-assets', 'Copies all assets from source', buildAssets);
+gulp.task('clean', clean);
+gulp.task('version', version);
 
-gulp.task('clean', 'Clean dist folder', clean);
-gulp.task('version', 'Displays current version of Semantic', version);
 
 /*--------------
       Docs
@@ -58,8 +64,8 @@ gulp.task('version', 'Displays current version of Semantic', version);
   https://github.com/Semantic-Org/Semantic-UI-Docs/
 */
 
-gulp.task('serve-docs', 'Serve file changes to SUI Docs', serveDocs);
-gulp.task('build-docs', 'Build all files and add to SUI Docs', buildDocs);
+gulp.task('serve-docs', serveDocs);
+gulp.task('build-docs', buildDocs);
 
 
 /*--------------
@@ -67,6 +73,6 @@ gulp.task('build-docs', 'Build all files and add to SUI Docs', buildDocs);
 ---------------*/
 
 if(config.rtl) {
-  gulp.task('watch-rtl', 'Watch files as RTL', watchRTL);
-  gulp.task('build-rtl', 'Build all files as RTL', buildRTL);
+  gulp.task('watch-rtl', watchRTL);
+  gulp.task('build-rtl', buildRTL);
 }