From c3ceffd2e25a83800b496591f7f9f6cf79b017f9 Mon Sep 17 00:00:00 2001
From: AJ ONeal <coolaj86@gmail.com>
Date: Sat, 15 Dec 2018 22:39:14 -0700
Subject: [PATCH] use ursa-optional or ursa

---
 lib/generate-privkey-ursa.js | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/generate-privkey-ursa.js b/lib/generate-privkey-ursa.js
index 4fbb501..feac7a5 100644
--- a/lib/generate-privkey-ursa.js
+++ b/lib/generate-privkey-ursa.js
@@ -1,7 +1,13 @@
 'use strict';
 
 module.exports = function (bitlen, exp) {
-  return require('ursa').generatePrivateKey(bitlen || 2048, exp || 65537).toPrivatePem().toString('ascii').trim();
+  var ursa;
+  try {
+    ursa = require('ursa');
+  } catch(e) {
+    ursa = require('ursa-optional');
+  }
+  return ursa.generatePrivateKey(bitlen || 2048, exp || 65537).toPrivatePem().toString('ascii').trim();
 };
 
 if (require.main === module) {