FIX gulpfile for ES5 files

config.yml

@@ -27,9 +27,9 @@ PATHS:
   sass:
     - "bower_components/foundation-sites/scss"
     - "bower_components/motion-ui/src"
-  # Paths to JavaScript libraries, which are combined into one file
-  javascript:
-    # Libraries required by Foundation
+  # Paths to JavaScript libraries, which are compined into one file
+  javascriptES6:
+    # Libraries requried by Foundation
     - "bower_components/jquery/dist/jquery.js"
     - "bower_components/what-input/dist/what-input.js"
     # Core Foundation files
@@ -57,6 +57,9 @@ PATHS:
     - "bower_components/foundation-sites/js/foundation.toggler.js"
     - "bower_components/foundation-sites/js/foundation.tooltip.js"
     - "bower_components/foundation-sites/js/foundation.zf.responsiveAccordionTabs.js"
-    # Paths to your own project code are here
+    # ES6 files
+    # - "bower_components/example/js/example.js"
+  # Paths to your own project code or ES5 files are here
+  javascriptES5:
     - "src/assets/js/!(app).js"
     - "src/assets/js/app.js"

gulpfile.babel.js

@@ -9,6 +9,7 @@ import rimraf   from 'rimraf';
 import sherpa   from 'style-sherpa';
 import yaml     from 'js-yaml';
 import fs       from 'fs';
+import filter   from 'gulp-filter';
 
 // Load all Gulp plugins into one variable
 const $ = plugins();
@@ -95,9 +96,13 @@ function sass() {
 // Combine JavaScript into one file
 // In production, the file is minified
 function javascript() {
-  return gulp.src(PATHS.javascript)
-    .pipe($.sourcemaps.init())
+  const jsES6 = filter(PATHS.javascriptES6, {restore: true});
+  const js = PATHS.javascriptES6.concat(PATHS.javascriptES5);
+  return gulp.src(js)
+    .pipe(jsES6)
     .pipe($.babel({ignore: ['what-input.js']}))
+    .pipe(jsES6.restore)
+    .pipe($.sourcemaps.init())
     .pipe($.concat('app.js'))
     .pipe($.if(PRODUCTION, $.uglify()
       .on('error', e => { console.log(e); })

package.json

@@ -20,6 +20,7 @@
     "gulp-concat": "^2.5.2",
     "gulp-cssnano": "^2.1.0",
     "gulp-extname": "^0.2.0",
+    "gulp-filter": "^4.0.0",
     "gulp-if": "^2.0.0",
     "gulp-imagemin": "^2.2.1",
     "gulp-load-plugins": "^1.1.0",
@@ -42,7 +43,9 @@
     "email": "foundation@zurb.com"
   },
   "babel": {
-    "presets": ["es2015"]
+    "presets": [
+      "es2015"
+    ]
   },
   "private": true
 }