diff --git a/src/harness/harness.ts b/src/harness/harness.ts
index ca179d1e54..e2f3f971da 100644
--- a/src/harness/harness.ts
+++ b/src/harness/harness.ts
@@ -934,17 +934,19 @@ module Harness {
             }
 
             public emitAll(ioHost?: IEmitterIOHost) {
-                this.compileFiles(this.inputFiles, [],(result) => {
-                    result.files.forEach(file => {
-                        ioHost.writeFile(file.fileName, file.code, false);
-                    });
-                    result.declFilesCode.forEach(file => {
-                        ioHost.writeFile(file.fileName, file.code, false);
-                    });
-                    result.sourceMaps.forEach(file => {
-                        ioHost.writeFile(file.fileName, file.code, false);
-                    });
-                },() => { }, this.compileOptions);
+                this.compileFiles(this.inputFiles,
+                    /*otherFiles*/ [],
+                    /*onComplete*/ (result) => {
+                        result.files.forEach(writeFile);
+                        result.declFilesCode.forEach(writeFile);
+                        result.sourceMaps.forEach(writeFile);
+                    },
+                    /*settingsCallback*/ () => { },
+                    this.compileOptions);
+
+                function writeFile(file: GeneratedFile) {
+                    ioHost.writeFile(file.fileName, file.code, false);
+                }
             }
 
             public compileFiles(inputFiles: { unitName: string; content: string }[],