Rollup.js enhancements

* upgrade to latest 0.41.6
* babel+alias+legacy plugins
fix #721
fix #722

Author: jknack

jooby-assets-j2v8/src/main/java/org/jooby/assets/V8Context.java

@@ -80,6 +80,10 @@ public V8Object hash() {
     return register(new V8Object(v8));
   }
 
+  public V8Function function(final JavaCallback callback) {
+    return register(new V8Function(v8, callback));
+  }
+
   public V8Object hash(final Map<String, Object> hash) {
     return register(V8ObjectUtils.toV8Object(v8, hash));
   }

jooby-assets-rollup/src/main/java/org/jooby/assets/Rollup.java

@@ -18,8 +18,18 @@
  */
 package org.jooby.assets;
 
+import java.nio.file.FileSystems;
+import java.nio.file.Path;
+import java.nio.file.PathMatcher;
+import java.nio.file.Paths;
+import java.util.Optional;
+
 import org.jooby.MediaType;
 
+import com.eclipsesource.v8.V8;
+import com.eclipsesource.v8.V8Array;
+import com.eclipsesource.v8.V8Object;
+import com.eclipsesource.v8.utils.V8ObjectUtils;
 import com.typesafe.config.Config;
 
 /**
@@ -38,39 +48,98 @@
  *
  *   pipeline {
  *     ...
+ *     dev: [rollup]
  *     dist: [rollup]
  *   }
  * }
  * </pre>
  *
  * <h2>options</h2>
+ * <h3>generate</h3>
  * <pre>
- * assets {
- *   fileset {
- *     home: ...
+ *   rollup {
+ *     genereate {
+ *       format: es
+ *     }
  *   }
+ * </pre>
  *
- *   pipeline {
- *     ...
- *     dist: [rollmap]
+ * <p>
+ * See
+ * <a href="https://github.com/rollup/rollup/wiki/JavaScript-API#bundlegenerate-options-">generate
+ * options</a>.
+ * </p>
+ *
+ * <h3>plugins</h3>
+ *
+ * <h4>babel</h4>
+ *
+ * <pre>
+ *   rollup {
+ *     plugins {
+ *       babel {
+ *         presets: [[es2015, {modules: false}]]
+ *       }
+ *     }
+ *   }
+ * </pre>
+ *
+ * <p>
+ * See <a href="https://babeljs.io/">https://babeljs.io</a> for more options.
+ * </p>
+ *
+ * <h4>legacy</h4>
+ * <p>
+ * This plugins add a <code>export default</code> line to legacy modules:
+ * </p>
+ *
+ * <pre>
+ *   rollup {
+ *     plugins {
+ *       legacy {
+ *         "/js/lib/react.js": React
+ *       }
+ *     }
  *   }
+ * </pre>
  *
+ * <h4>alias</h4>
+ * <p>
+ * Set an alias to a common (probably long) path.
+ * </p>
+ *
+ * <pre>
  *   rollup {
- *     output {
- *       format: amd
+ *     plugins {
+ *       alias {
+ *         "/js/lib/react.js": "react"
+ *       }
  *     }
  *   }
- * }
  * </pre>
+ *
+ * <p>
+ * Instead of:
+ * </p>
+ * <pre>
+ * import React from 'js/lib/react.js';
+ * </pre>
+ *
  * <p>
- * See: <a href="https://github.com/rollup/rollup/wiki/JavaScript-API">rollup.js options</a>.
+ * Now, you can import a module like:
  * </p>
+ * <pre>
+ * import React from 'react';
+ * </pre>
  *
  * @author edgar
  * @since 0.12.0
  */
 public class Rollup extends AssetProcessor {
 
+  static final PathMatcher TRUE = p -> true;
+  static final PathMatcher FALSE = p -> false;
+
   @Override
   public boolean matches(final MediaType type) {
     return MediaType.js.matches(type);
@@ -79,9 +148,40 @@ public boolean matches(final MediaType type) {
   @Override
   public String process(final String filename, final String source, final Config conf)
       throws Exception {
-    return V8Context.run("window", v8 -> {
-      return v8.invoke("rollup.js", source, options(), filename);
+    return V8Context.run("window", ctx -> {
+      V8 v8 = ctx.v8;
+
+      V8Object j2v8 = ctx.hash();
+      j2v8.add("createFilter", ctx.function((receiver, args) -> {
+        PathMatcher includes = at(args, 0)
+            .map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
+            .orElse(TRUE);
+        PathMatcher excludes = at(args, 1)
+            .map(it -> FileSystems.getDefault().getPathMatcher("glob:" + it))
+            .orElse(FALSE);
+
+        return ctx.function((self, arguments) -> {
+          Path path = Paths.get(arguments.get(0).toString());
+          if (includes.matches(path)) {
+            return !excludes.matches(path);
+          }
+          return false;
+        });
+      }));
+
+      v8.add("j2v8", j2v8);
+      return ctx.invoke("rollup.js", source, options(), filename);
     });
   }
 
+  private Optional<Object> at(final V8Array args, final int i) {
+    if (i < args.length()) {
+      Object value = V8ObjectUtils.getValue(args, i);
+      if (value == V8.getUndefined()) {
+        return Optional.empty();
+      }
+      return Optional.ofNullable(value);
+    }
+    return Optional.empty();
+  }
 }

jooby-assets-rollup/src/main/resources/lib/babel-6.24.0.min.js

@@ -1,5 +1,5 @@
 /**
- * prim 0.0.7 Copyright (c) 2012-2013, The Dojo Foundation All Rights Reserved.
+ * prim 1.0.0 Copyright (c) 2012-2016, The Dojo Foundation All Rights Reserved.
  * Available via the MIT or new BSD license.
  * see: http://github.com/requirejs/prim for details
  */
@@ -97,7 +97,10 @@ var prim;
 
                 try {
                     var then = v && v.then;
-                    if (isFunObj(v) && typeof then === 'function') {
+                    if (isFunObj(v) && typeof then === 'function' &&
+                        // if error, keep on error pathway if a promise,
+                        // 2.2.7.2 tests.
+                        prop !== 'e') {
                         f2 = makeFulfill();
                         then.call(v, f2.resolve, f2.reject);
                     } else {