remove lastSeenNonce

Internal nonce tracking is no longer needed since populate/sendTransaction is now locked. Even if cancelled midway, the nonce will get a refreshed value from the number of transactions from chain.

ethers/contract.nim

@@ -125,7 +125,7 @@ proc send(contract: Contract,
           function: string,
           parameters: tuple,
           overrides = TransactionOverrides()):
-         Future[?TransactionResponse] {.async.} =
+         Future[?TransactionResponse] {.async: (raises: [AsyncLockError]).} =
   if signer =? contract.signer:
 
     var params: seq[string] = @[]

ethers/providers/jsonrpc.nim

@@ -327,8 +327,6 @@ method sendTransaction*(
   {.async: (raises:[SignerError, ProviderError]).} =
 
   convertError:
-    if nonce =? transaction.nonce:
-      signer.updateNonce(nonce)
     let
       client = await signer.provider.client
       hash = await client.eth_sendTransaction(transaction)

ethers/signer.nim

@@ -8,7 +8,6 @@ export basics
 
 type
   Signer* = ref object of RootObj
-    lastSeenNonce: ?UInt256
     populateLock: AsyncLock
   SignerError* = object of EthersError
 
@@ -93,28 +92,10 @@ template withLock*(signer: Signer, body: untyped) =
   finally:
     signer.populateLock.release()
 
-
-
-method updateNonce*(
-  signer: Signer,
-  nonce: UInt256
-) {.base, gcsafe.} =
-
-  without lastSeen =? signer.lastSeenNonce:
-    signer.lastSeenNonce = some nonce
-    return
-
-  if nonce > lastSeen:
-    signer.lastSeenNonce = some nonce
-
-method decreaseNonce*(signer: Signer) {.base, gcsafe.} =
-  if lastSeen =? signer.lastSeenNonce and lastSeen > 0:
-    signer.lastSeenNonce = some lastSeen - 1
-
 method populateTransaction*(
   signer: Signer,
   transaction: Transaction): Future[Transaction]
-  {.base, async: (raises: [CancelledError, AsyncLockError, ProviderError, SignerError]).} =
+  {.base, async: (raises: [CancelledError, ProviderError, SignerError]).} =
   ## Populates a transaction with sender, chainId, gasPrice, nonce, and gasLimit.
   ## NOTE: to avoid async concurrency issues, this routine should be called with
   ## a lock if it is followed by sendTransaction. For reference, see the `send`
@@ -147,10 +128,8 @@ method populateTransaction*(
       try:
         populated.gasLimit = some(await signer.estimateGas(populated, BlockTag.pending))
       except EstimateGasError as e:
-        signer.decreaseNonce()
         raise e
       except ProviderError as e:
-        signer.decreaseNonce()
         raiseSignerError(e.msg)
 
   else:
@@ -165,7 +144,7 @@ method populateTransaction*(
 method cancelTransaction*(
   signer: Signer,
   tx: Transaction
-): Future[TransactionResponse] {.base, async: (raises: [SignerError, ProviderError]).} =
+): Future[TransactionResponse] {.base, async: (raises: [SignerError, CancelledError, AsyncLockError, ProviderError]).} =
   # cancels a transaction by sending with a 0-valued transaction to ourselves
   # with the failed tx's nonce
 

ethers/signers/wallet.nim

@@ -86,6 +86,4 @@ method sendTransaction*(
   {.async: (raises:[SignerError, ProviderError]).} =
 
   let signed = await signTransaction(wallet, transaction)
-  if nonce =? transaction.nonce:
-    wallet.updateNonce(nonce)
   return await provider(wallet).sendTransaction(signed)