Rollup d3 bundling trough gulp

gulpfile.js

@@ -4,9 +4,12 @@ var babel = require('gulp-babel');
 var concat = require('gulp-concat');
 var rename = require('gulp-rename');
 var uglify = require('gulp-uglify');
+var rollup = require('rollup-stream');
 var sourcemaps = require('gulp-sourcemaps');
 var browserSync = require('browser-sync');
 var jsonld = require('jsonld');
+var source = require('vinyl-source-stream');
+var buffer = require('vinyl-buffer');
 
 
 var through = require('through2')
@@ -19,7 +22,9 @@ var paths = {
   },
   "scripts": {
     "src": "./src/js/portfolio.js",
-    "dest": "./assets/js/"
+    "dest": "./assets/js/",
+    "d3src": "./src/js/d3.bundle.js",
+    "d3destDir": "./assets/js/"
   },
   "data": {
     "src": "./rubenvandeven.jsonld",
@@ -47,8 +52,19 @@ gulp.task('scripts', function() {
       .pipe(gulp.dest(paths.scripts.dest)) // save .js
       .pipe(uglify())
       .pipe(rename({ extname: '.min.js' }))
+      // .pipe(sourcemaps.write('maps'))
+      .pipe(gulp.dest(paths.scripts.d3destDir)) // save .min.js
+});
+
+gulp.task('d3', function() {
+    return rollup( 'rollup.config.js' )
+      .pipe(source('d3.bundle.js'))
+      .pipe(gulp.dest(paths.scripts.d3destDir)) // save .js
+      .pipe(buffer())
+      .pipe(uglify())
+      .pipe(rename({ extname: '.min.js' }))
       .pipe(sourcemaps.write('maps'))
-      .pipe(gulp.dest(paths.scripts.dest)) // save .min.js
+      .pipe(gulp.dest(paths.scripts.d3destDir)) // save .min.js
 });
 
 gulp.task('jsonld', function(){
@@ -68,6 +84,7 @@ gulp.task('jsonld', function(){
 var watchStylesAndScripts = function() {
   gulp.watch(paths.styles.src,['styles']);
   gulp.watch(paths.scripts.src,['scripts', browserSync.reload]);
+  gulp.watch(paths.scripts.d3src,['d3', browserSync.reload]);
   gulp.watch([paths.data.src], ['jsonld', browserSync.reload]);
 }
 

package.json

@@ -16,9 +16,13 @@
     "gulp-babel": "^7.0.1",
     "gulp-concat": "^2.6.1",
     "gulp-rename": "^1.4.0",
+    "gulp-rollup": "^2.16.2",
     "gulp-sass": "^4.0.1",
     "gulp-sourcemaps": "^2.6.4",
-    "gulp-uglify": "^3.0.1"
+    "gulp-uglify": "^3.0.1",
+    "rollup-stream": "^1.24.1",
+    "vinyl-buffer": "^1.0.1",
+    "vinyl-source-stream": "^2.0.0"
   },
   "dependencies": {
     "d3-color": "^1.2.3",

rollup.config.js

@@ -1,9 +1,13 @@
 import npm from 'rollup-plugin-node-resolve';
 
 export default {
-  entry: './src/js/d3.bundle.js',
-  format: 'iife', //umd or iife
-  moduleName: 'd3',
-  plugins: [npm({jsnext: true})],
-  dest: './assets/js/d3.bundle.js'
+  input: './src/js/d3.bundle.js',
+  format : 'iife',
+  name : 'd3',
+  plugins: [
+    npm(
+      {jsnext: true}
+    )
+  ],
+  output : './assets/js/d3.bundle.'
 };