diff --git a/tools/isobuild/compiler-plugin.js b/tools/isobuild/compiler-plugin.js
index 6f3daa7e89..1a3950bce1 100644
--- a/tools/isobuild/compiler-plugin.js
+++ b/tools/isobuild/compiler-plugin.js
@@ -571,19 +571,7 @@ class ResourceSlot {
         // If we have a sourceProcessor, it will handle the adding of the
         // final processed JavaScript.
       } else if (self.inputResource.extension === "js") {
-        // If there is no sourceProcessor for a .js file, add the source
-        // directly to the output. #HardcodeJs
-        self.addJavaScript({
-          // XXX it's a shame to keep converting between Buffer and string, but
-          // files.convertToStandardLineEndings only works on strings for now
-          data: self.inputResource.data.toString('utf8'),
-          path: self.inputResource.path,
-          bare: self.inputResource.fileOptions &&
-            (self.inputResource.fileOptions.bare ||
-             // XXX eventually get rid of backward-compatibility "raw" name
-             // XXX COMPAT WITH 0.6.4
-             self.inputResource.fileOptions.raw)
-        });
+        self._addDirectlyToJsOutputResources();
       }
     } else {
       if (sourceProcessor) {
@@ -593,16 +581,23 @@ class ResourceSlot {
       // Any resource that isn't handled by compiler plugins just gets passed
       // through.
       if (self.inputResource.type === "js") {
-        self.jsOutputResources.push(new JsOutputResource({
-          resourceSlot: self,
-          options: self.inputResource,
-        }));
+        self._addDirectlyToJsOutputResources();
       } else {
         self.outputResources.push(self.inputResource);
       }
     }
   }
 
+  // Add this resource directly to jsOutputResources without modifying the
+  // original data. #HardcodeJs
+  _addDirectlyToJsOutputResources() {
+    this.addJavaScript({
+      ...(this.inputResource.fileOptions || {}),
+      path: this.inputResource.path,
+      data: this.inputResource.data,
+    });
+  }
+
   _getOption(name, options) {
     if (options && _.has(options, name)) {
       return options[name];
@@ -693,6 +688,15 @@ class ResourceSlot {
     return isInImports;
   }
 
+  _isBare(options) {
+    return !! (
+      this._getOption("bare", options) ||
+      // XXX eventually get rid of backwards-compatible "raw" name
+      // XXX COMPAT WITH 0.6.4
+      this._getOption("raw", options)
+    );
+  }
+
   addStylesheet(options, lazyFinalizer) {
     if (! this.sourceProcessor) {
       throw Error("addStylesheet on non-source ResourceSlot?");
@@ -868,7 +872,7 @@ class OutputResource {
     Object.assign(this, {
       type,
       lazy: resourceSlot._isLazy(options, true),
-      bare: !! resourceSlot._getOption("bare", options),
+      bare: resourceSlot._isBare(options),
       mainModule: !! resourceSlot._getOption("mainModule", options),
       sourcePath,
       targetPath,