diff

diff --git a/packages/core/parcel-bundler/src/assets/JSAsset.js b/packages/core/parcel-bundler/src/assets/JSAsset.js
index 8b1748ba..f12c8f97 100644
--- a/packages/core/parcel-bundler/src/assets/JSAsset.js
+++ b/packages/core/parcel-bundler/src/assets/JSAsset.js
@@ -188,13 +188,10 @@ class JSAsset extends Asset {
       }
     }
 
-    return [
-      {
-        type: 'js',
-        value: code,
-        map: this.sourceMap
-      }
-    ];
+    return {
+        js: code,
+        map: this.sourceMap,
+    };
   }
 
   generateErrorMessage(err) {
diff --git a/packages/core/parcel-bundler/src/packagers/JSPackager.js b/packages/core/parcel-bundler/src/packagers/JSPackager.js
index a07ff3ba..d6986ba5 100644
--- a/packages/core/parcel-bundler/src/packagers/JSPackager.js
+++ b/packages/core/parcel-bundler/src/packagers/JSPackager.js
@@ -158,6 +158,7 @@ class JSPackager extends Packager {
     }
 
     if (bundleLoader) {
+      await bundleLoader.process();
       await this.addAssetToBundle(bundleLoader);
     } else {
       return;
diff --git a/packages/core/parcel-bundler/src/transforms/terser.js b/packages/core/parcel-bundler/src/transforms/terser.js
index 64f9e38e..75249dd2 100644
--- a/packages/core/parcel-bundler/src/transforms/terser.js
+++ b/packages/core/parcel-bundler/src/transforms/terser.js
@@ -5,7 +5,7 @@ module.exports = async function(asset) {
   await asset.parseIfNeeded();
 
   // Convert AST into JS
-  let source = (await asset.generate())[0].value;
+  let source = (await asset.generate()).js;
 
   let customConfig = await asset.getConfig(['.uglifyrc', '.terserrc']);
   let options = {