From e354dea2831e6dce81019de0bfa1eb5325aeddbb Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Mon, 16 May 2016 17:05:36 -0700
Subject: [PATCH] varint assert.

---
 lib/bcoin/writer.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/bcoin/writer.js b/lib/bcoin/writer.js
index 55260f69..bec886bd 100644
--- a/lib/bcoin/writer.js
+++ b/lib/bcoin/writer.js
@@ -336,7 +336,11 @@ BufferWriter.prototype.writeDoubleBE = function writeDoubleBE(value) {
  */
 
 BufferWriter.prototype.writeVarint = function writeVarint(value) {
-  assert(value >= 0);
+  if (typeof value === 'number')
+    assert(value >= 0);
+  else
+    assert(!value.isNeg());
+
   this.written += utils.sizeVarint(value);
   this.data.push([VARINT, value]);
 };