From 55a212a2df356b147f9cbe003f29d2341e794619 Mon Sep 17 00:00:00 2001
From: Ros McMahon <rosmcmahon@gmail.com>
Date: Mon, 17 Apr 2023 19:46:54 +0700
Subject: [PATCH] fix/transaction: throw a meaningful error when the user tries
 to `decode` an array + update README

---
 README.md                     |  2 +-
 src/common/lib/transaction.ts | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index d03eee33..e91637fb 100644
--- a/README.md
+++ b/README.md
@@ -536,7 +536,7 @@ arweave.transactions.getData('bNbA3TEQVL60xlgCcqdz4ZPHFZ711cZ3hmkpGttDt_U', {dec
 ```js
 const transaction = arweave.transactions.get('bNbA3TEQVL60xlgCcqdz4ZPHFZ711cZ3hmkpGttDt_U').then(transaction => {
 
-  transaction.get('tags').forEach(tag => {
+  transaction['tags'].forEach(tag => {
     let key = tag.get('name', {decode: true, string: true});
     let value = tag.get('value', {decode: true, string: true});
     console.log(`${key} : ${value}`);
diff --git a/src/common/lib/transaction.ts b/src/common/lib/transaction.ts
index c2135e4d..a6ad590f 100644
--- a/src/common/lib/transaction.ts
+++ b/src/common/lib/transaction.ts
@@ -38,6 +38,16 @@ class BaseObject {
       return ArweaveUtils.bufferTob64Url(this[field]);
     }
 
+    if (this[field] instanceof Array) {
+      if(options?.decode !== undefined || options?.string !== undefined) {
+        if(field === "tags") {
+          console.warn(`Did you mean to use 'transaction["tags"]' ?`);
+        } 
+        throw new Error(`Cannot decode or stringify an array.`);
+      }
+      return this[field];
+    }
+
     if (options && options.decode == true) {
       if (options && options.string) {
         return ArweaveUtils.b64UrlToString(this[field]);