From c394a8b9de748bff98ed99ce25983e4925f95104 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oskar=20Segersv=C3=A4rd?= <victorystick@gmail.com>
Date: Mon, 31 Aug 2015 10:59:46 +0200
Subject: [PATCH] Fix CJS finalizer bug, where too many newline was inserted.

---
 src/finalisers/cjs.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/finalisers/cjs.js b/src/finalisers/cjs.js
index adf8ff1..8e065d2 100644
--- a/src/finalisers/cjs.js
+++ b/src/finalisers/cjs.js
@@ -5,10 +5,15 @@ export default function cjs ( bundle, magicString, { exportMode }, options ) {
 	let intro = options.useStrict === false ? `` : `'use strict';\n\n`;
 
 	// TODO handle empty imports, once they're supported
-	const importBlock = bundle.externalModules
+	let importBlock = bundle.externalModules
 		.map( module => `var ${module.name} = require('${module.id}');`)
-		.concat( getInteropBlock( bundle ) )
-		.join( '\n' );
+		.join('\n');
+
+	const interopBlock = getInteropBlock( bundle );
+
+	if ( interopBlock ) {
+		importBlock += '\n' + interopBlock;
+	}
 
 	if ( importBlock ) {
 		intro += importBlock + '\n\n';