From f5ea3b1870a9fe6de5e41a211010055529e41aea Mon Sep 17 00:00:00 2001
From: Christopher Jeffrey <chjjeffrey@gmail.com>
Date: Fri, 1 Jul 2016 02:35:04 -0700
Subject: [PATCH] always duplicate objects.

---
 lib/bcoin/coin.js   |  5 -----
 lib/bcoin/script.js |  8 --------
 lib/bcoin/tx.js     | 34 +---------------------------------
 3 files changed, 1 insertion(+), 46 deletions(-)

diff --git a/lib/bcoin/coin.js b/lib/bcoin/coin.js
index 0838447d..d2d87149 100644
--- a/lib/bcoin/coin.js
+++ b/lib/bcoin/coin.js
@@ -29,9 +29,6 @@ var assert = utils.assert;
  */
 
 function Coin(options) {
-  if (options instanceof Coin)
-    return options;
-
   if (!(this instanceof Coin))
     return new Coin(options);
 
@@ -85,8 +82,6 @@ Coin.prototype.fromOptions = function fromOptions(options) {
  */
 
 Coin.fromOptions = function fromOptions(options) {
-  if (options instanceof Coin)
-    return options;
   return new Coin().fromOptions(options);
 };
 
diff --git a/lib/bcoin/script.js b/lib/bcoin/script.js
index 99178d19..92e7798a 100644
--- a/lib/bcoin/script.js
+++ b/lib/bcoin/script.js
@@ -32,9 +32,6 @@ var ScriptError = bcoin.errors.ScriptError;
  */
 
 function Witness(options) {
-  if (options instanceof Witness)
-    return options;
-
   if (!(this instanceof Witness))
     return new Witness(options);
 
@@ -1090,9 +1087,6 @@ Stack.isStack = function isStack(obj) {
  */
 
 function Script(options) {
-  if (options instanceof Script)
-    return options;
-
   if (!(this instanceof Script))
     return new Script(options);
 
@@ -1156,8 +1150,6 @@ Script.prototype.fromOptions = function fromOptions(options) {
  */
 
 Script.fromOptions = function fromOptions(options) {
-  if (options instanceof Script)
-    return options;
   return new Script().fromOptions(options);
 };
 
diff --git a/lib/bcoin/tx.js b/lib/bcoin/tx.js
index f270e3c1..07928dee 100644
--- a/lib/bcoin/tx.js
+++ b/lib/bcoin/tx.js
@@ -166,39 +166,7 @@ TX.fromOptions = function fromOptions(options) {
  */
 
 TX.prototype.clone = function clone() {
-  var copy = new TX();
-  var i, input, output;
-
-  copy.ts = this.ts;
-  copy.block = this.block;
-  copy.index = this.index;
-  copy.height = this.height;
-
-  copy.version = this.version;
-  copy.flag = this.flag;
-
-  for (i = 0; i < this.inputs.length; i++) {
-    input = new bcoin.input();
-    input.prevout = new bcoin.outpoint();
-    input.prevout.hash = this.inputs[i].prevout.hash;
-    input.prevout.index = this.inputs[i].prevout.index;
-    input.coin = this.inputs[i].coin;
-    input.script = this.inputs[i].script;
-    input.witness = this.inputs[i].witness;
-    input.sequence = this.inputs[i].sequence;
-    copy.inputs.push(input);
-  }
-
-  for (i = 0; i < this.outputs.length; i++) {
-    output = new bcoin.output();
-    output.value = this.outputs[i].value;
-    output.script = this.outputs[i].script;
-    copy.outputs.push(output);
-  }
-
-  copy.locktime = this.locktime;
-
-  return copy;
+  return new TX(this);
 };
 
 /**