From ce1c784f5b6a3d476518fd4ee0a9c62c2499366a Mon Sep 17 00:00:00 2001
From: Kurt Blackwell <kurt@blackwell.id.au>
Date: Thu, 30 Jun 2016 20:38:20 +0800
Subject: [PATCH] Use fs.realpathSync() rather than path.resolve() to match
 filenames passed to require.extensions[].  On Windows resolve(...) returns
 "c:\..." but realpath(...) returns "C:\...".

---
 bin/src/runRollup.js | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/bin/src/runRollup.js b/bin/src/runRollup.js
index 923fb1e..5613dbb 100644
--- a/bin/src/runRollup.js
+++ b/bin/src/runRollup.js
@@ -1,4 +1,4 @@
-import { resolve } from 'path';
+import { realpathSync } from 'fs';
 import relative from 'require-relative';
 import handleError from './handleError';
 import SOURCEMAPPING_URL from './sourceMappingUrl.js';
@@ -54,7 +54,8 @@ export default function runRollup ( command ) {
 				}
 			}
 		} else {
-			config = resolve( config );
+			// find real path of config so it matches what Node provides to callbacks in require.extensions
+			config = realpathSync( config );
 		}
 
 		rollup.rollup({
@@ -79,7 +80,7 @@ export default function runRollup ( command ) {
 			};
 
 			try {
-				const options = require( resolve( config ) );
+				const options = require( config );
 				if ( Object.keys( options ).length === 0 ) {
 					handleError({ code: 'MISSING_CONFIG' });
 				}