always add bundle-loader module to the bundle (#686)

* always add the bundle-loader module * check if the asset is already in the bundle
parcel-bundler · Jan 29, 2018 · deba5ef · deba5ef
1 parent f9be820
commit deba5ef
Showing 1 changed file with 6 additions and 2 deletions.
diff --git a/src/packagers/JSPackager.js b/src/packagers/JSPackager.js
@@ -101,6 +101,9 @@ class JSPackager extends Packager {
   }
 
   async addAssetToBundle(asset) {
+    if (this.bundle.assets.has(asset)) {
+      return;
+    }
     this.bundle.addAsset(asset);
     if (!asset.parentBundle) {
       asset.parentBundle = this.bundle;
@@ -124,10 +127,11 @@ class JSPackager extends Packager {
     );
     if (this.externalModules.size > 0 && !bundleLoader) {
       bundleLoader = await this.bundler.getAsset('_bundle_loader');
-      await this.addAssetToBundle(bundleLoader);
     }
 
-    if (!bundleLoader) {
+    if (bundleLoader) {
+      await this.addAssetToBundle(bundleLoader);
+    } else {
       return;
     }