From d8891bcbbf5645b8beccb080fadf0ee10d5c535d Mon Sep 17 00:00:00 2001
From: Matthew Phillips <matthew@matthewphillips.info>
Date: Thu, 5 Sep 2019 09:00:16 -0400
Subject: [PATCH] Support the forward slash behavior in pkg.main

Closes #1507
---
 ext/npm-utils.js                       | 6 +++++-
 test/npm/normalize_main-config_test.js | 5 +++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/ext/npm-utils.js b/ext/npm-utils.js
index 4e22674fd..9e9885576 100644
--- a/ext/npm-utils.js
+++ b/ext/npm-utils.js
@@ -385,7 +385,11 @@ var utils = {
 			} else if(typeof pkg.jam === "object" && pkg.jam.main) {
 				main = pkg.jam.main;
 			} else if(pkg.main) {
-				main = pkg.main;
+				if(utils.path.endsWithSlash(pkg.main)) {
+					main = pkg.main + "index";
+				} else {
+					main = pkg.main;
+				}
 			} else {
 				main = "index";
 			}
diff --git a/test/npm/normalize_main-config_test.js b/test/npm/normalize_main-config_test.js
index a5b131031..8d52d923b 100644
--- a/test/npm/normalize_main-config_test.js
+++ b/test/npm/normalize_main-config_test.js
@@ -20,6 +20,11 @@ var mainVariations = {
 		pkg.main = "bar.js";
 	},
 
+	"pkg.main with trailing slash": function(pkg) {
+		pkg.main = "bar/";
+		return "bar/index";
+	},
+
 	"browser string": function(pkg){
 		pkg.browser = "bar.js";
 	},