From 1db4ce12d49e235a7155de24ee153f409e7e7370 Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Tue, 9 Mar 2021 15:26:20 -0500
Subject: [PATCH] Added abstraction for EIP-2718 support.

---
 packages/transactions/src.ts/index.ts | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/packages/transactions/src.ts/index.ts b/packages/transactions/src.ts/index.ts
index 89665037ee..e5da082972 100644
--- a/packages/transactions/src.ts/index.ts
+++ b/packages/transactions/src.ts/index.ts
@@ -30,6 +30,7 @@ export type UnsignedTransaction = {
 
 export interface Transaction {
     hash?: string;
+    type?: number | null;
 
     to?: string;
     from?: string;
@@ -162,7 +163,7 @@ export function serialize(transaction: UnsignedTransaction, signature?: Signatur
     return RLP.encode(raw);
 }
 
-export function parse(rawTransaction: BytesLike): Transaction {
+function _parse(rawTransaction: Uint8Array): Transaction {
     const transaction = RLP.decode(rawTransaction);
 
     if (transaction.length !== 9 && transaction.length !== 6) {
@@ -225,6 +226,17 @@ export function parse(rawTransaction: BytesLike): Transaction {
         tx.hash = keccak256(rawTransaction);
     }
 
+    tx.type = null;
+
     return tx;
 }
 
+export function parse(rawTransaction: BytesLike): Transaction {
+    const payload = arrayify(rawTransaction);
+    if (payload[0] > 0x7f) { return _parse(payload); }
+    return logger.throwError(`unsupported transaction type: ${ payload[0] }`, Logger.errors.UNSUPPORTED_OPERATION, {
+        operation: "parseTransaction",
+        transactionType: payload[0]
+    });
+}
+