From d5e6c015e1d30f77d3d5149c89b14d1086fad1ef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Elodie=20Thi=C3=A9blin?= <ethieblin@logilab.fr>
Date: Fri, 23 Jul 2021 15:58:32 +0200
Subject: [PATCH] fix: allow remove base on urn uids

Create root in the same way prependBase creates a URL
---
 lib/url.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/url.js b/lib/url.js
index 7855f693..eab920f7 100644
--- a/lib/url.js
+++ b/lib/url.js
@@ -165,7 +165,10 @@ api.removeBase = (base, iri) => {
   // establish base root
   let root = '';
   if(base.href !== '') {
-    root += (base.protocol || '') + '//' + (base.authority || '');
+    root += base.protocol || '';
+    if(base.authority !== null) {
+      root += '//' + base.authority;
+    }
   } else if(iri.indexOf('//')) {
     // support network-path reference with empty base
     root += '//';