From dc03bb9ec740e4e03a620562e3e66e70f31410b0 Mon Sep 17 00:00:00 2001
From: Guillermo Rauch <rauchg@gmail.com>
Date: Sat, 28 May 2016 11:11:50 -0700
Subject: [PATCH] add function to convert host parameters to hostname

---
 lib/to-host.js | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 lib/to-host.js

diff --git a/lib/to-host.js b/lib/to-host.js
new file mode 100644
index 0000000..0474409
--- /dev/null
+++ b/lib/to-host.js
@@ -0,0 +1,17 @@
+import { parse } from 'url';
+
+/**
+ * Converts a valid deployment lookup parameter to a hostname.
+ * `http://google.com` => google.com
+ * google.com => google.com
+ */
+
+export default function toHost (url) {
+  if (/^https?:\/\//.test(url)) {
+    return parse(url).host;
+  } else {
+    // remove any path if present
+    // `a.b.c/` => `a.b.c`
+    return url.replace(/(\/\/)?([^\/]+)(.*)/, '$2');
+  }
+}