deps: upgrade babel

Author: René Kooi

.babelrc

@@ -0,0 +1,3 @@
+{
+  "presets": ["es2015", "stage-2"]
+}

gulpfile.babel.js

@@ -28,7 +28,10 @@ gulp.task('clean', [ 'clean-lib', 'clean-build' ]);
 
 gulp.task('babel', () => {
   return gulp.src('src/**/*.js')
-    .pipe(babel({ modules: 'amd', externalHelpers: true }))
+    .pipe(babel({
+      presets: ['extplug'],
+      plugins: ['external-helpers']
+    }))
     .pipe(babelHelpers('_babelHelpers.js', 'var'))
     .pipe(gulp.dest('lib/'));
 });

package.json

@@ -13,12 +13,16 @@
     "sistyl": "^1.0.0"
   },
   "devDependencies": {
-    "babel-core": "^5.8.23",
+    "babel-cli": "^6.5.1",
+    "babel-plugin-external-helpers": "^6.5.0",
+    "babel-preset-es2015": "^6.9.0",
+    "babel-preset-extplug": "^1.0.0",
+    "babel-preset-stage-2": "^6.5.0",
     "browserify": "^11.0.1",
     "del": "^1.2.1",
     "gulp": "^3.9.0",
-    "gulp-babel": "^5.2.1",
-    "gulp-babel-external-helpers": "^1.0.0",
+    "gulp-babel": "^6.1.2",
+    "gulp-babel-external-helpers": "^2.0.0",
     "gulp-concat": "^2.6.0",
     "gulp-data": "^1.2.0",
     "gulp-rename": "^1.2.2",