From dc60342c7e3e724be8143bbefdc9acdc1019a94c Mon Sep 17 00:00:00 2001
From: junderw <junderwood@bitcoinbank.co.jp>
Date: Mon, 20 Apr 2020 22:29:04 +0900
Subject: [PATCH 1/2] Some type fixes and js build

---
 src/index.js    | 23 +++++++++++++----------
 ts_src/index.ts | 20 +++++++++-----------
 2 files changed, 22 insertions(+), 21 deletions(-)

diff --git a/src/index.js b/src/index.js
index 0aa640c..87ae0e3 100644
--- a/src/index.js
+++ b/src/index.js
@@ -1,7 +1,6 @@
 'use strict';
 Object.defineProperty(exports, '__esModule', { value: true });
 const bitcoinjs_lib_1 = require('bitcoinjs-lib');
-const bitcoinjs_lib_2 = require('bitcoinjs-lib');
 async function requestPayjoinWithCustomRemoteCall(psbt, remoteCall) {
   const clonedPsbt = psbt.clone();
   clonedPsbt.finalizeAllInputs();
@@ -15,12 +14,6 @@ async function requestPayjoinWithCustomRemoteCall(psbt, remoteCall) {
   delete clonedPsbt.data.globalMap.globalXpub;
   const payjoinPsbt = await remoteCall(clonedPsbt);
   if (!payjoinPsbt) throw new Error("We did not get the receiver's PSBT");
-  // no inputs were added?
-  if (clonedPsbt.inputCount <= payjoinPsbt.inputCount) {
-    throw new Error(
-      "There were less inputs than before in the receiver's PSBT",
-    );
-  }
   if (
     payjoinPsbt.data.globalMap.globalXpub &&
     payjoinPsbt.data.globalMap.globalXpub.length > 0
@@ -62,7 +55,7 @@ async function requestPayjoinWithCustomRemoteCall(psbt, remoteCall) {
           // Can we assume output will contain redeemScript and witnessScript?
           // If so, we could decompile scriptPubkey, RS, and WS, and search for
           // the pubkey and its hash160.
-          bitcoinjs_lib_2.payments.p2wpkh({
+          bitcoinjs_lib_1.payments.p2wpkh({
             pubkey: originalOutput.bip32Derivation[0].pubkey,
           }).output,
         )
@@ -70,8 +63,18 @@ async function requestPayjoinWithCustomRemoteCall(psbt, remoteCall) {
         payjoinPsbt.updateOutput(index, originalOutput);
     });
   }
-  // TODO: check payjoinPsbt.version == psbt.version
-  // TODO: check payjoinPsbt.locktime == psbt.locktime
+  if (
+    getGlobalTransaction(payjoinPsbt).version !==
+    getGlobalTransaction(psbt).version
+  ) {
+    throw new Error('The version field of the transaction has been modified');
+  }
+  if (
+    getGlobalTransaction(payjoinPsbt).locktime !==
+    getGlobalTransaction(psbt).locktime
+  ) {
+    throw new Error('The LockTime field of the transaction has been modified');
+  }
   // TODO: check payjoinPsbt.inputs where input belongs to us, that it is not finalized
   // TODO: check payjoinPsbt.inputs where input belongs to us, that it is was included in psbt.inputs
   // TODO: check payjoinPsbt.inputs where input belongs to us, that its sequence has not changed from that of psbt.inputs
diff --git a/ts_src/index.ts b/ts_src/index.ts
index 379f6ab..63a0a40 100644
--- a/ts_src/index.ts
+++ b/ts_src/index.ts
@@ -1,4 +1,4 @@
-import { Psbt, Transaction, payments } from 'bitcoinjs-lib';
+import { payments, Psbt, Transaction, TxInput } from 'bitcoinjs-lib';
 import {
   Bip32Derivation,
   GlobalXpub,
@@ -6,13 +6,6 @@ import {
 } from 'bip174/src/lib/interfaces';
 
 type Nullable<T> = T | null;
-interface TxInput {
-  hash: Buffer;
-  index: number;
-  script: Buffer;
-  sequence: number;
-  witness: Buffer[];
-}
 
 export async function requestPayjoinWithCustomRemoteCall(
   psbt: Psbt,
@@ -33,7 +26,6 @@ export async function requestPayjoinWithCustomRemoteCall(
   const payjoinPsbt = await remoteCall(clonedPsbt);
   if (!payjoinPsbt) throw new Error("We did not get the receiver's PSBT");
 
-
   if (
     payjoinPsbt.data.globalMap.globalXpub &&
     (payjoinPsbt.data.globalMap.globalXpub as GlobalXpub[]).length > 0
@@ -87,10 +79,16 @@ export async function requestPayjoinWithCustomRemoteCall(
     });
   }
 
-  if (getGlobalTransaction(payjoinPsbt).version !== getGlobalTransaction(psbt).version) {
+  if (
+    getGlobalTransaction(payjoinPsbt).version !==
+    getGlobalTransaction(psbt).version
+  ) {
     throw new Error('The version field of the transaction has been modified');
   }
-  if (getGlobalTransaction(payjoinPsbt).locktime !== getGlobalTransaction(psbt).locktime) {
+  if (
+    getGlobalTransaction(payjoinPsbt).locktime !==
+    getGlobalTransaction(psbt).locktime
+  ) {
     throw new Error('The LockTime field of the transaction has been modified');
   }
   // TODO: check payjoinPsbt.inputs where input belongs to us, that it is not finalized

From 6723ad3cc663bddbfd711b8e35748a8f0cd4fa5f Mon Sep 17 00:00:00 2001
From: junderw <junderwood@bitcoinbank.co.jp>
Date: Mon, 20 Apr 2020 22:30:13 +0900
Subject: [PATCH 2/2] Fix README links (not ready yet though)

---
 README.md    | 4 ++--
 package.json | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index fb76690..1da1f50 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Payjoin Client
-[![Build Status](https://travis-ci.org/bitcoinjs/bip32.png?branch=master)](https://travis-ci.org/bitcoinjs/bip32)
+[![Build Status](https://travis-ci.org/bitcoinjs/payjoin-client.png?branch=master)](https://travis-ci.org/bitcoinjs/payjoin-client)
 
-[![NPM](https://img.shields.io/npm/v/bip32.svg)](https://www.npmjs.org/package/bip32)
+[![NPM](https://img.shields.io/npm/v/payjoin-client.svg)](https://www.npmjs.org/package/payjoin-client)
 
 [![code style: prettier](https://img.shields.io/badge/code_style-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 
diff --git a/package.json b/package.json
index e04548d..947b672 100644
--- a/package.json
+++ b/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "payjoin-client-js",
+  "name": "payjoin-client",
   "version": "1.0.0",
   "description": "A BTCPay Payjoin compatible client",
   "keywords": [