From 3a7322499035b0d030e38f7a4fca8eb38cc3a94c Mon Sep 17 00:00:00 2001
From: Rich-Harris <richard.a.harris@gmail.com>
Date: Sun, 18 Sep 2016 12:24:17 -0400
Subject: [PATCH] =?UTF-8?q?ensure=20bundle=20ends=20with=20newline=20?=
 =?UTF-8?q?=E2=80=93=20fixes=20#958?=
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---
 src/Bundle.js |  1 +
 src/rollup.js |  2 +-
 test/test.js  | 10 ++++++++++
 3 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/Bundle.js b/src/Bundle.js
index d56f4a5..a4e8c53 100644
--- a/src/Bundle.js
+++ b/src/Bundle.js
@@ -431,6 +431,7 @@ export default class Bundle {
 			timeEnd( 'sourceMap' );
 		}
 
+		if ( code[ code.length - 1 ] !== '\n' ) code += '\n';
 		return { code, map };
 	}
 
diff --git a/src/rollup.js b/src/rollup.js
index be39d0b..0868960 100644
--- a/src/rollup.js
+++ b/src/rollup.js
@@ -108,7 +108,7 @@ export function rollup ( options ) {
 						promises.push( writeFile( dest + '.map', map.toString() ) );
 					}
 
-					code += `\n//# ${SOURCEMAPPING_URL}=${url}\n`;
+					code += `//# ${SOURCEMAPPING_URL}=${url}\n`;
 				}
 
 				promises.push( writeFile( dest, code ) );
diff --git a/test/test.js b/test/test.js
index 5876435..52cc00e 100644
--- a/test/test.js
+++ b/test/test.js
@@ -102,6 +102,16 @@ describe( 'rollup', function () {
 				plugins: [ loader({ x: `var a = null; a = 'a string';` }) ]
 			});
 		});
+
+		it( 'includes a newline at the end of the bundle', () => {
+			return rollup.rollup({
+				entry: 'x',
+				plugins: [ loader({ x: `console.log( 42 );` }) ]
+			}).then( bundle => {
+				const { code } = bundle.generate({ format: 'iife' });
+				assert.ok( code[ code.length - 1 ] === '\n' );
+			});
+		});
 	});
 
 	describe( 'bundle.write()', () => {