FRE-600: Fix code review blockers

- Consolidated duplicate UndoManagers to single instance
- Fixed connection promise to only resolve on 'connected' status
- Fixed WebSocketProvider import (WebsocketProvider)
- Added proper doc.destroy() cleanup
- Renamed isPresenceInitialized property to avoid conflict

Co-Authored-By: Paperclip <noreply@paperclip.ing>

node_modules/viem/op-stack/actions/buildDepositTransaction.ts

@@ -0,0 +1,156 @@
+import type { Address } from 'abitype'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import {
+  type PrepareTransactionRequestErrorType,
+  type PrepareTransactionRequestParameters,
+  prepareTransactionRequest,
+} from '../../actions/wallet/prepareTransactionRequest.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type {
+  Account,
+  DeriveAccount,
+  GetAccountParameter,
+} from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hex } from '../../types/misc.js'
+import type { Prettify, UnionOmit } from '../../types/utils.js'
+import type { DepositTransactionParameters } from './depositTransaction.js'
+
+export type BuildDepositTransactionParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetAccountParameter<account, accountOverride, false> &
+  GetChainParameter<chain, chainOverride> & {
+    /** Gas limit for transaction execution on the L2. */
+    gas?: bigint | undefined
+    /** Value in wei to mint (deposit) on the L2. Debited from the caller's L1 balance. */
+    mint?: bigint | undefined
+    /** Value in wei sent with this transaction on the L2. Debited from the caller's L2 balance. */
+    value?: bigint | undefined
+  } & (
+    | {
+        /** Encoded contract method & arguments. */
+        data?: Hex | undefined
+        /** Whether or not this is a contract deployment transaction. */
+        isCreation?: false | undefined
+        /** L2 Transaction recipient. */
+        to?: Address | undefined
+      }
+    | {
+        /** Contract deployment bytecode. Required for contract deployment transactions. */
+        data: Hex
+        /** Whether or not this is a contract deployment transaction. */
+        isCreation: true
+        /** L2 Transaction recipient. Cannot exist for contract deployment transactions. */
+        to?: undefined
+      }
+  )
+
+export type BuildDepositTransactionReturnType<
+  account extends Account | undefined = Account | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+> = Prettify<
+  UnionOmit<DepositTransactionParameters<Chain, account, Chain>, 'account'> & {
+    account: DeriveAccount<account, accountOverride>
+  }
+>
+
+export type BuildDepositTransactionErrorType =
+  | ParseAccountErrorType
+  | PrepareTransactionRequestErrorType
+  | ErrorType
+
+/**
+ * Prepares parameters for a [deposit transaction](https://github.com/ethereum-optimism/optimism/blob/develop/specs/deposits.md) to be initiated on an L1.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/buildDepositTransaction
+ *
+ * @param client - Client to use
+ * @param parameters - {@link BuildDepositTransactionParameters}
+ * @returns Parameters for `depositTransaction`. {@link DepositTransactionReturnType}
+ *
+ * @example
+ * import { createWalletClient, http, parseEther } from 'viem'
+ * import { base } from 'viem/chains'
+ * import { publicActionsL2 } from 'viem/op-stack'
+ * import { buildDepositTransaction } from 'viem/wallet'
+ *
+ * const client = createWalletClient({
+ *   chain: base,
+ *   transport: http(),
+ * }).extend(publicActionsL2())
+ *
+ * const args = await buildDepositTransaction(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function buildDepositTransaction<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+  accountOverride extends Account | Address | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: BuildDepositTransactionParameters<
+    chain,
+    account,
+    chainOverride,
+    accountOverride
+  >,
+): Promise<BuildDepositTransactionReturnType<account, accountOverride>> {
+  const {
+    account: account_,
+    chain = client.chain,
+    gas,
+    data,
+    isCreation,
+    mint,
+    to,
+    value,
+  } = args
+
+  const account = account_ ? parseAccount(account_) : undefined
+
+  const request = await prepareTransactionRequest(client, {
+    account: mint ? undefined : account,
+    chain,
+    gas,
+    data,
+    parameters: ['gas'],
+    to,
+    value,
+  } as PrepareTransactionRequestParameters)
+
+  return {
+    account,
+    request: {
+      data: request.data,
+      gas: request.gas,
+      mint,
+      isCreation,
+      to: request.to,
+      value: request.value,
+    },
+    targetChain: chain,
+  } as unknown as BuildDepositTransactionReturnType<account, accountOverride>
+}

node_modules/viem/op-stack/actions/buildInitiateWithdrawal.ts

@@ -0,0 +1,118 @@
+import type { Address } from 'abitype'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import {
+  type PrepareTransactionRequestErrorType,
+  type PrepareTransactionRequestParameters,
+  prepareTransactionRequest,
+} from '../../actions/wallet/prepareTransactionRequest.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type { Chain, GetChainParameter } from '../../types/chain.js'
+import type { Hex } from '../../types/misc.js'
+import type { Prettify, UnionOmit } from '../../types/utils.js'
+import type { InitiateWithdrawalParameters } from './initiateWithdrawal.js'
+
+export type BuildInitiateWithdrawalParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+> = GetAccountParameter<account, accountOverride, false> &
+  GetChainParameter<chain, chainOverride> & {
+    /** Encoded contract method & arguments. */
+    data?: Hex | undefined
+    /** Gas limit for transaction execution on the L1. */
+    gas?: bigint | undefined
+    /** L1 Transaction recipient. */
+    to: Address
+    /** Value in wei to withdrawal to the L1. Debited from the caller's L2 balance. */
+    value?: bigint | undefined
+  }
+
+export type BuildInitiateWithdrawalReturnType<
+  account extends Account | undefined = Account | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+> = Prettify<
+  UnionOmit<InitiateWithdrawalParameters<Chain, account, Chain>, 'account'> &
+    GetAccountParameter<account, accountOverride>
+>
+
+export type BuildInitiateWithdrawalErrorType =
+  | ParseAccountErrorType
+  | PrepareTransactionRequestErrorType
+  | ErrorType
+
+/**
+ * Prepares parameters for a [withdrawal](https://community.optimism.io/docs/protocol/withdrawal-flow/#withdrawal-initiating-transaction) from an L2 to the L1.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/buildInitiateWithdrawal
+ *
+ * @param client - Client to use
+ * @param parameters - {@link BuildInitiateWithdrawalParameters}
+ * @returns Parameters for `depositTransaction`. {@link DepositTransactionReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { mainnet } from 'viem/chains'
+ * import { buildInitiateWithdrawal } from 'viem/wallet'
+ *
+ * const client = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const args = await buildInitiateWithdrawal(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function buildInitiateWithdrawal<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+  accountOverride extends Account | Address | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: BuildInitiateWithdrawalParameters<
+    chain,
+    account,
+    chainOverride,
+    accountOverride
+  >,
+): Promise<BuildInitiateWithdrawalReturnType<account, accountOverride>> {
+  const { account: account_, chain = client.chain, gas, data, to, value } = args
+
+  const account = account_ ? parseAccount(account_) : undefined
+
+  const request = await prepareTransactionRequest(client, {
+    account: null,
+    chain,
+    gas,
+    data,
+    parameters: ['gas'],
+    to,
+    value,
+  } as PrepareTransactionRequestParameters)
+
+  return {
+    account,
+    request: {
+      data: request.data,
+      gas: request.gas,
+      to: request.to,
+      value: request.value,
+    },
+  } as BuildInitiateWithdrawalReturnType<account, accountOverride>
+}

node_modules/viem/op-stack/actions/buildProveWithdrawal.ts

@@ -0,0 +1,181 @@
+import type { Address } from 'abitype'
+import {
+  type GetBlockErrorType,
+  getBlock,
+} from '../../actions/public/getBlock.js'
+import {
+  type GetProofErrorType,
+  getProof,
+} from '../../actions/public/getProof.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type {
+  Account,
+  DeriveAccount,
+  GetAccountParameter,
+} from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hex } from '../../types/misc.js'
+import type { OneOf, Prettify } from '../../types/utils.js'
+import { fromRlp } from '../../utils/encoding/fromRlp.js'
+import { toRlp } from '../../utils/encoding/toRlp.js'
+import { keccak256 } from '../../utils/hash/keccak256.js'
+import { contracts } from '../contracts.js'
+import type { Withdrawal } from '../types/withdrawal.js'
+import {
+  type GetWithdrawalHashStorageSlotErrorType,
+  getWithdrawalHashStorageSlot,
+} from '../utils/getWithdrawalHashStorageSlot.js'
+import type { GetGameReturnType } from './getGame.js'
+import type { GetL2OutputReturnType } from './getL2Output.js'
+import type { ProveWithdrawalParameters } from './proveWithdrawal.js'
+
+const outputRootProofVersion =
+  '0x0000000000000000000000000000000000000000000000000000000000000000' as const
+
+export type BuildProveWithdrawalParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetAccountParameter<account, accountOverride, false> &
+  GetChainParameter<chain, chainOverride> & {
+    withdrawal: Withdrawal
+  } & OneOf<{ output: GetL2OutputReturnType } | { game: GetGameReturnType }>
+
+export type BuildProveWithdrawalReturnType<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  accountOverride extends Account | Address | undefined =
+    | Account
+    | Address
+    | undefined,
+> = Prettify<
+  Pick<
+    ProveWithdrawalParameters,
+    'l2OutputIndex' | 'outputRootProof' | 'withdrawalProof' | 'withdrawal'
+  > & {
+    account: DeriveAccount<account, accountOverride>
+    targetChain: DeriveChain<chain, chainOverride>
+  }
+>
+
+export type BuildProveWithdrawalErrorType =
+  | GetBlockErrorType
+  | GetProofErrorType
+  | GetWithdrawalHashStorageSlotErrorType
+  | ErrorType
+
+/**
+ * Builds the transaction that proves a withdrawal was initiated on an L2. Used in the Withdrawal flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/buildProveWithdrawal
+ *
+ * @param client - Client to use
+ * @param parameters - {@link BuildProveWithdrawalParameters}
+ * @returns The prove withdraw transaction request. {@link BuildProveWithdrawalReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { buildProveWithdrawal } from 'viem/op-stack'
+ *
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const args = await buildProveWithdrawal(publicClientL2, {
+ *   output: { ... },
+ *   withdrawal: { ... },
+ * })
+ */
+export async function buildProveWithdrawal<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+  accountOverride extends Account | Address | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: BuildProveWithdrawalParameters<
+    chain,
+    account,
+    chainOverride,
+    accountOverride
+  >,
+): Promise<
+  BuildProveWithdrawalReturnType<chain, account, chainOverride, accountOverride>
+> {
+  const { account, chain = client.chain, game, output, withdrawal } = args
+
+  const { withdrawalHash } = withdrawal
+  const { l2BlockNumber } = game ?? output
+
+  const slot = getWithdrawalHashStorageSlot({ withdrawalHash })
+  const [proof, block] = await Promise.all([
+    getProof(client, {
+      address: contracts.l2ToL1MessagePasser.address,
+      storageKeys: [slot],
+      blockNumber: l2BlockNumber,
+    }),
+    getBlock(client, {
+      blockNumber: l2BlockNumber,
+    }),
+  ])
+
+  return {
+    account,
+    l2OutputIndex: game?.index ?? output?.outputIndex,
+    outputRootProof: {
+      latestBlockhash: block.hash,
+      messagePasserStorageRoot: proof.storageHash,
+      stateRoot: block.stateRoot,
+      version: outputRootProofVersion,
+    },
+    targetChain: chain,
+    withdrawalProof: maybeAddProofNode(
+      keccak256(slot),
+      proof.storageProof[0].proof,
+    ),
+    withdrawal,
+  } as unknown as BuildProveWithdrawalReturnType<
+    chain,
+    account,
+    chainOverride,
+    accountOverride
+  >
+}
+
+/** @internal */
+export function maybeAddProofNode(key: string, proof: readonly Hex[]) {
+  const lastProofRlp = proof[proof.length - 1]
+  const lastProof = fromRlp(lastProofRlp)
+  if (lastProof.length !== 17) return proof
+
+  const modifiedProof = [...proof]
+  for (const item of lastProof) {
+    // Find any nodes located inside of the branch node.
+    if (!Array.isArray(item)) continue
+    // Check if the key inside the node matches the key we're looking for. We remove the first
+    // two characters (0x) and then we remove one more character (the first nibble) since this
+    // is the identifier for the type of node we're looking at. In this case we don't actually
+    // care what type of node it is because a branch node would only ever be the final proof
+    // element if (1) it includes the leaf node we're looking for or (2) it stores the value
+    // within itself. If (1) then this logic will work, if (2) then this won't find anything
+    // and we won't append any proof elements, which is exactly what we would want.
+    const suffix = item[0].slice(3)
+    if (typeof suffix !== 'string' || !key.endsWith(suffix)) continue
+    modifiedProof.push(toRlp(item))
+  }
+  return modifiedProof
+}

node_modules/viem/op-stack/actions/depositTransaction.ts

@@ -0,0 +1,165 @@
+import type { Address } from 'abitype'
+import {
+  type WriteContractErrorType,
+  type WriteContractParameters,
+  writeContract,
+} from '../../actions/wallet/writeContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import { zeroAddress } from '../../constants/address.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash } from '../../types/misc.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { DepositRequest } from '../types/deposit.js'
+import type { EstimateDepositTransactionGasErrorType } from './estimateDepositTransactionGas.js'
+
+export type DepositTransactionParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'> & {
+    /** L2 transaction request. */
+    request: DepositRequest
+    /**
+     * Gas limit for transaction execution on the L1.
+     * `null` to skip gas estimation & defer calculation to signer.
+     */
+    gas?: bigint | null | undefined
+  }
+export type DepositTransactionReturnType = Hash
+export type DepositTransactionErrorType =
+  | EstimateDepositTransactionGasErrorType
+  | WriteContractErrorType
+  | ErrorType
+
+/**
+ * Initiates a [deposit transaction](https://github.com/ethereum-optimism/optimism/blob/develop/specs/deposits.md) on an L1, which executes a transaction on L2.
+ *
+ * Internally performs a contract write to the [`depositTransaction` function](https://github.com/ethereum-optimism/optimism/blob/develop/packages/contracts-bedrock/src/L1/OptimismPortal.sol#L378)
+ * on the [Optimism Portal contract](https://github.com/ethereum-optimism/optimism/blob/develop/packages/contracts-bedrock/src/L1/OptimismPortal.sol).
+ *
+ * - Docs: https://viem.sh/op-stack/actions/depositTransaction
+ *
+ * @param client - Client to use
+ * @param parameters - {@link DepositTransactionParameters}
+ * @returns The L1 transaction hash. {@link DepositTransactionReturnType}
+ *
+ * @example
+ * import { createWalletClient, custom, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { depositTransaction } from 'viem/op-stack'
+ *
+ * const client = createWalletClient({
+ *   chain: mainnet,
+ *   transport: custom(window.ethereum),
+ * })
+ *
+ * const hash = await depositTransaction(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   request: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ *   targetChain: base,
+ * })
+ *
+ * @example
+ * // Account Hoisting
+ * import { createWalletClient, http } from 'viem'
+ * import { privateKeyToAccount } from 'viem/accounts'
+ * import { base, mainnet } from 'viem/chains'
+ * import { depositTransaction } from 'viem/op-stack'
+ *
+ * const client = createWalletClient({
+ *   account: privateKeyToAccount('0x…'),
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const hash = await depositTransaction(client, {
+ *   request: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ *   targetChain: base,
+ * })
+ */
+export async function depositTransaction<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: DepositTransactionParameters<chain, account, chainOverride>,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    request: {
+      data = '0x',
+      gas: l2Gas,
+      isCreation = false,
+      mint,
+      to = '0x',
+      value,
+    },
+    targetChain,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  return writeContract(client, {
+    account: account!,
+    abi: portalAbi,
+    address: portalAddress,
+    chain,
+    functionName: 'depositTransaction',
+    args: [
+      isCreation ? zeroAddress : to,
+      value ?? mint ?? 0n,
+      l2Gas,
+      isCreation,
+      data,
+    ],
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    value: mint,
+    gas: gas ?? undefined,
+  } satisfies WriteContractParameters as any)
+}

node_modules/viem/op-stack/actions/estimateContractL1Fee.ts

@@ -0,0 +1,142 @@
+import type { Abi } from 'abitype'
+
+import type { Account } from '../../accounts/types.js'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { BaseError } from '../../errors/base.js'
+import type { Chain } from '../../types/chain.js'
+import type {
+  ContractFunctionArgs,
+  ContractFunctionName,
+  ContractFunctionParameters,
+  GetValue,
+} from '../../types/contract.js'
+import type { UnionOmit } from '../../types/utils.js'
+import {
+  type EncodeFunctionDataErrorType,
+  type EncodeFunctionDataParameters,
+  encodeFunctionData,
+} from '../../utils/abi/encodeFunctionData.js'
+import {
+  type GetContractErrorReturnType,
+  getContractError,
+} from '../../utils/errors/getContractError.js'
+import {
+  type EstimateL1FeeErrorType,
+  type EstimateL1FeeParameters,
+  estimateL1Fee,
+} from './estimateL1Fee.js'
+
+export type EstimateContractL1FeeParameters<
+  abi extends Abi | readonly unknown[] = Abi,
+  functionName extends ContractFunctionName<
+    abi,
+    'nonpayable' | 'payable'
+  > = ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<
+    abi,
+    'nonpayable' | 'payable',
+    functionName
+  > = ContractFunctionArgs<abi, 'nonpayable' | 'payable', functionName>,
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = ContractFunctionParameters<
+  abi,
+  'nonpayable' | 'payable',
+  functionName,
+  args
+> &
+  UnionOmit<
+    EstimateL1FeeParameters<chain, account, chainOverride>,
+    'data' | 'to' | 'value'
+  > &
+  GetValue<
+    abi,
+    functionName,
+    EstimateL1FeeParameters<
+      chain,
+      account,
+      chainOverride
+    > extends EstimateL1FeeParameters
+      ? EstimateL1FeeParameters<chain, account, chainOverride>['value']
+      : EstimateL1FeeParameters['value']
+  >
+
+export type EstimateContractL1FeeReturnType = bigint
+
+export type EstimateContractL1FeeErrorType = GetContractErrorReturnType<
+  EncodeFunctionDataErrorType | EstimateL1FeeErrorType | ParseAccountErrorType
+>
+
+/**
+ * Estimates the L1 data fee required to execute an L2 contract write.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateContractL1FeeParameters}
+ * @returns The gas estimate (in wei). {@link EstimateContractL1FeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseAbi } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateContractL1Fee } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const l1Fee = await estimateContractL1Fee(client, {
+ *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
+ *   abi: parseAbi(['function mint() public']),
+ *   functionName: 'mint',
+ *   account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
+ * })
+ */
+export async function estimateContractL1Fee<
+  const abi extends Abi | readonly unknown[],
+  functionName extends ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<abi, 'pure' | 'view', functionName>,
+  chain extends Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateContractL1FeeParameters<
+    abi,
+    functionName,
+    args,
+    chain,
+    account,
+    chainOverride
+  >,
+): Promise<EstimateContractL1FeeReturnType> {
+  const { abi, address, args, functionName, ...request } =
+    parameters as EstimateContractL1FeeParameters
+  const data = encodeFunctionData({
+    abi,
+    args,
+    functionName,
+  } as EncodeFunctionDataParameters)
+  try {
+    const fee = await estimateL1Fee(client, {
+      data,
+      to: address,
+      ...request,
+    } as unknown as EstimateL1FeeParameters)
+    return fee
+  } catch (error) {
+    const account = request.account ? parseAccount(request.account) : undefined
+    throw getContractError(error as BaseError, {
+      abi,
+      address,
+      args,
+      docsPath: '/docs/chains/op-stack/estimateContractL1Fee',
+      functionName,
+      sender: account?.address,
+    })
+  }
+}

node_modules/viem/op-stack/actions/estimateContractL1Gas.ts

@@ -0,0 +1,142 @@
+import type { Abi } from 'abitype'
+
+import type { Account } from '../../accounts/types.js'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { BaseError } from '../../errors/base.js'
+import type { Chain } from '../../types/chain.js'
+import type {
+  ContractFunctionArgs,
+  ContractFunctionName,
+  ContractFunctionParameters,
+  GetValue,
+} from '../../types/contract.js'
+import type { UnionOmit } from '../../types/utils.js'
+import {
+  type EncodeFunctionDataErrorType,
+  type EncodeFunctionDataParameters,
+  encodeFunctionData,
+} from '../../utils/abi/encodeFunctionData.js'
+import {
+  type GetContractErrorReturnType,
+  getContractError,
+} from '../../utils/errors/getContractError.js'
+import {
+  type EstimateL1GasErrorType,
+  type EstimateL1GasParameters,
+  estimateL1Gas,
+} from './estimateL1Gas.js'
+
+export type EstimateContractL1GasParameters<
+  abi extends Abi | readonly unknown[] = Abi,
+  functionName extends ContractFunctionName<
+    abi,
+    'nonpayable' | 'payable'
+  > = ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<
+    abi,
+    'nonpayable' | 'payable',
+    functionName
+  > = ContractFunctionArgs<abi, 'nonpayable' | 'payable', functionName>,
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = ContractFunctionParameters<
+  abi,
+  'nonpayable' | 'payable',
+  functionName,
+  args
+> &
+  UnionOmit<
+    EstimateL1GasParameters<chain, account, chainOverride>,
+    'data' | 'to' | 'value'
+  > &
+  GetValue<
+    abi,
+    functionName,
+    EstimateL1GasParameters<
+      chain,
+      account,
+      chainOverride
+    > extends EstimateL1GasParameters
+      ? EstimateL1GasParameters<chain, account, chainOverride>['value']
+      : EstimateL1GasParameters['value']
+  >
+
+export type EstimateContractL1GasReturnType = bigint
+
+export type EstimateContractL1GasErrorType = GetContractErrorReturnType<
+  EncodeFunctionDataErrorType | EstimateL1GasErrorType | ParseAccountErrorType
+>
+
+/**
+ * Estimates the L1 data gas required to successfully execute a contract write function call.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateContractL1GasParameters}
+ * @returns The gas estimate (in wei). {@link EstimateContractL1GasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseAbi } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateContractL1Gas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const l1Gas = await estimateContractL1Gas(client, {
+ *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
+ *   abi: parseAbi(['function mint() public']),
+ *   functionName: 'mint',
+ *   account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
+ * })
+ */
+export async function estimateContractL1Gas<
+  const abi extends Abi | readonly unknown[],
+  functionName extends ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<abi, 'pure' | 'view', functionName>,
+  chain extends Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateContractL1GasParameters<
+    abi,
+    functionName,
+    args,
+    chain,
+    account,
+    chainOverride
+  >,
+): Promise<EstimateContractL1GasReturnType> {
+  const { abi, address, args, functionName, ...request } =
+    parameters as EstimateContractL1GasParameters
+  const data = encodeFunctionData({
+    abi,
+    args,
+    functionName,
+  } as EncodeFunctionDataParameters)
+  try {
+    const gas = await estimateL1Gas(client, {
+      data,
+      to: address,
+      ...request,
+    } as unknown as EstimateL1GasParameters)
+    return gas
+  } catch (error) {
+    const account = request.account ? parseAccount(request.account) : undefined
+    throw getContractError(error as BaseError, {
+      abi,
+      address,
+      args,
+      docsPath: '/docs/chains/op-stack/estimateContractL1Gas',
+      functionName,
+      sender: account?.address,
+    })
+  }
+}

node_modules/viem/op-stack/actions/estimateContractTotalFee.ts

@@ -0,0 +1,144 @@
+import type { Abi } from 'abitype'
+
+import type { Account } from '../../accounts/types.js'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { BaseError } from '../../errors/base.js'
+import type { Chain } from '../../types/chain.js'
+import type {
+  ContractFunctionArgs,
+  ContractFunctionName,
+  ContractFunctionParameters,
+  GetValue,
+} from '../../types/contract.js'
+import type { UnionOmit } from '../../types/utils.js'
+import {
+  type EncodeFunctionDataErrorType,
+  type EncodeFunctionDataParameters,
+  encodeFunctionData,
+} from '../../utils/abi/encodeFunctionData.js'
+import {
+  type GetContractErrorReturnType,
+  getContractError,
+} from '../../utils/errors/getContractError.js'
+import {
+  type EstimateTotalFeeErrorType,
+  type EstimateTotalFeeParameters,
+  estimateTotalFee,
+} from './estimateTotalFee.js'
+
+export type EstimateContractTotalFeeParameters<
+  abi extends Abi | readonly unknown[] = Abi,
+  functionName extends ContractFunctionName<
+    abi,
+    'nonpayable' | 'payable'
+  > = ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<
+    abi,
+    'nonpayable' | 'payable',
+    functionName
+  > = ContractFunctionArgs<abi, 'nonpayable' | 'payable', functionName>,
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = ContractFunctionParameters<
+  abi,
+  'nonpayable' | 'payable',
+  functionName,
+  args
+> &
+  UnionOmit<
+    EstimateTotalFeeParameters<chain, account, chainOverride>,
+    'data' | 'to' | 'value'
+  > &
+  GetValue<
+    abi,
+    functionName,
+    EstimateTotalFeeParameters<
+      chain,
+      account,
+      chainOverride
+    > extends EstimateTotalFeeParameters
+      ? EstimateTotalFeeParameters<chain, account, chainOverride>['value']
+      : EstimateTotalFeeParameters['value']
+  >
+
+export type EstimateContractTotalFeeReturnType = bigint
+
+export type EstimateContractTotalFeeErrorType = GetContractErrorReturnType<
+  | EncodeFunctionDataErrorType
+  | EstimateTotalFeeErrorType
+  | ParseAccountErrorType
+>
+
+/**
+ * Estimates the L1 data fee + L2 fee to execute an L2 contract write.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateContractTotalFeeParameters}
+ * @returns The gas estimate (in wei). {@link EstimateContractTotalFeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseAbi } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateContractTotalFee } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const totalFee = await estimateContractTotalFee(client, {
+ *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
+ *   abi: parseAbi(['function mint() public']),
+ *   functionName: 'mint',
+ *   account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
+ * })
+ */
+export async function estimateContractTotalFee<
+  const abi extends Abi | readonly unknown[],
+  functionName extends ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<abi, 'pure' | 'view', functionName>,
+  chain extends Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateContractTotalFeeParameters<
+    abi,
+    functionName,
+    args,
+    chain,
+    account,
+    chainOverride
+  >,
+): Promise<EstimateContractTotalFeeReturnType> {
+  const { abi, address, args, functionName, ...request } =
+    parameters as EstimateContractTotalFeeParameters
+  const data = encodeFunctionData({
+    abi,
+    args,
+    functionName,
+  } as EncodeFunctionDataParameters)
+  try {
+    const fee = await estimateTotalFee(client, {
+      data,
+      to: address,
+      ...request,
+    } as unknown as EstimateTotalFeeParameters)
+    return fee
+  } catch (error) {
+    const account = request.account ? parseAccount(request.account) : undefined
+    throw getContractError(error as BaseError, {
+      abi,
+      address,
+      args,
+      docsPath: '/docs/chains/op-stack/estimateTotalFee',
+      functionName,
+      sender: account?.address,
+    })
+  }
+}

node_modules/viem/op-stack/actions/estimateContractTotalGas.ts

@@ -0,0 +1,144 @@
+import type { Abi } from 'abitype'
+
+import type { Account } from '../../accounts/types.js'
+import {
+  type ParseAccountErrorType,
+  parseAccount,
+} from '../../accounts/utils/parseAccount.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { BaseError } from '../../errors/base.js'
+import type { Chain } from '../../types/chain.js'
+import type {
+  ContractFunctionArgs,
+  ContractFunctionName,
+  ContractFunctionParameters,
+  GetValue,
+} from '../../types/contract.js'
+import type { UnionOmit } from '../../types/utils.js'
+import {
+  type EncodeFunctionDataErrorType,
+  type EncodeFunctionDataParameters,
+  encodeFunctionData,
+} from '../../utils/abi/encodeFunctionData.js'
+import {
+  type GetContractErrorReturnType,
+  getContractError,
+} from '../../utils/errors/getContractError.js'
+import {
+  type EstimateTotalGasErrorType,
+  type EstimateTotalGasParameters,
+  estimateTotalGas,
+} from './estimateTotalGas.js'
+
+export type EstimateContractTotalGasParameters<
+  abi extends Abi | readonly unknown[] = Abi,
+  functionName extends ContractFunctionName<
+    abi,
+    'nonpayable' | 'payable'
+  > = ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<
+    abi,
+    'nonpayable' | 'payable',
+    functionName
+  > = ContractFunctionArgs<abi, 'nonpayable' | 'payable', functionName>,
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = ContractFunctionParameters<
+  abi,
+  'nonpayable' | 'payable',
+  functionName,
+  args
+> &
+  UnionOmit<
+    EstimateTotalGasParameters<chain, account, chainOverride>,
+    'data' | 'to' | 'value'
+  > &
+  GetValue<
+    abi,
+    functionName,
+    EstimateTotalGasParameters<
+      chain,
+      account,
+      chainOverride
+    > extends EstimateTotalGasParameters
+      ? EstimateTotalGasParameters<chain, account, chainOverride>['value']
+      : EstimateTotalGasParameters['value']
+  >
+
+export type EstimateContractTotalGasReturnType = bigint
+
+export type EstimateContractTotalGasErrorType = GetContractErrorReturnType<
+  | EncodeFunctionDataErrorType
+  | EstimateTotalGasErrorType
+  | ParseAccountErrorType
+>
+
+/**
+ * Estimates the L1 data gas + L2 gas required to successfully execute a contract write function call.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateContractTotalGasParameters}
+ * @returns The gas estimate (in wei). {@link EstimateContractTotalGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseAbi } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateContractTotalGas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const totalGas = await estimateContractTotalGas(client, {
+ *   address: '0xFBA3912Ca04dd458c843e2EE08967fC04f3579c2',
+ *   abi: parseAbi(['function mint() public']),
+ *   functionName: 'mint',
+ *   account: '0xf39fd6e51aad88f6f4ce6ab8827279cfffb92266',
+ * })
+ */
+export async function estimateContractTotalGas<
+  const abi extends Abi | readonly unknown[],
+  functionName extends ContractFunctionName<abi, 'nonpayable' | 'payable'>,
+  args extends ContractFunctionArgs<abi, 'pure' | 'view', functionName>,
+  chain extends Chain | undefined,
+  account extends Account | undefined = undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateContractTotalGasParameters<
+    abi,
+    functionName,
+    args,
+    chain,
+    account,
+    chainOverride
+  >,
+): Promise<EstimateContractTotalGasReturnType> {
+  const { abi, address, args, functionName, ...request } =
+    parameters as EstimateContractTotalGasParameters
+  const data = encodeFunctionData({
+    abi,
+    args,
+    functionName,
+  } as EncodeFunctionDataParameters)
+  try {
+    const gas = await estimateTotalGas(client, {
+      data,
+      to: address,
+      ...request,
+    } as unknown as EstimateTotalGasParameters)
+    return gas
+  } catch (error) {
+    const account = request.account ? parseAccount(request.account) : undefined
+    throw getContractError(error as BaseError, {
+      abi,
+      address,
+      args,
+      docsPath: '/docs/chains/op-stack/estimateTotalGas',
+      functionName,
+      sender: account?.address,
+    })
+  }
+}

node_modules/viem/op-stack/actions/estimateDepositTransactionGas.ts

@@ -0,0 +1,149 @@
+import type { Address } from 'abitype'
+
+import {
+  type EstimateContractGasErrorType,
+  type EstimateContractGasParameters,
+  estimateContractGas,
+} from '../../actions/public/estimateContractGas.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import { zeroAddress } from '../../constants/address.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { DepositRequest } from '../types/deposit.js'
+
+export type EstimateDepositTransactionGasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  ///
+  derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<derivedChain, 'portal'> & {
+    /** L2 transaction request. */
+    request: DepositRequest
+    /** Gas limit for transaction execution on the L1. */
+    gas?: bigint | undefined
+  }
+
+export type EstimateDepositTransactionGasReturnType = bigint
+
+export type EstimateDepositTransactionGasErrorType =
+  | EstimateContractGasErrorType
+  | ErrorType
+
+/**
+ * Estimates gas required to initiate a [deposit transaction](https://github.com/ethereum-optimism/optimism/blob/develop/specs/deposits.md) on an L1, which executes a transaction on L2.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/estimateDepositTransactionGas
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateDepositTransactionGasParameters}
+ * @returns The L1 transaction hash. {@link EstimateDepositTransactionGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, custom, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { estimateDepositTransactionGas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: mainnet,
+ *   transport: custom(window.ethereum),
+ * })
+ *
+ * const gas = await estimateDepositTransactionGas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   args: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ *   targetChain: base,
+ * })
+ */
+export async function estimateDepositTransactionGas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateDepositTransactionGasParameters<
+    chain,
+    account,
+    chainOverride
+  >,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    request: {
+      data = '0x',
+      gas: l2Gas,
+      isCreation = false,
+      mint,
+      to = '0x',
+      value,
+    },
+    targetChain,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const params = {
+    account,
+    abi: portalAbi,
+    address: portalAddress,
+    functionName: 'depositTransaction',
+    args: [
+      isCreation ? zeroAddress : to,
+      value ?? mint ?? 0n,
+      l2Gas,
+      isCreation,
+      data,
+    ],
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    value: mint,
+    // TODO: Not sure `chain` is necessary since it's not used downstream
+    // in `estimateContractGas` or `estimateGas`
+    // @ts-expect-error
+    chain,
+  } satisfies EstimateContractGasParameters<
+    typeof portalAbi,
+    'depositTransaction'
+  >
+  return estimateContractGas(client, params as any)
+}

node_modules/viem/op-stack/actions/estimateFinalizeWithdrawalGas.ts

@@ -0,0 +1,137 @@
+import type { Address } from 'abitype'
+import {
+  type EstimateContractGasErrorType,
+  type EstimateContractGasParameters,
+  estimateContractGas,
+} from '../../actions/public/estimateContractGas.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portal2Abi, portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { Withdrawal } from '../types/withdrawal.js'
+
+export type EstimateFinalizeWithdrawalGasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'> & {
+    /** Gas limit for transaction execution on the L2. */
+    gas?: bigint | undefined
+    /**
+     * Finalize against a specific proof submitter.
+     * If unspecified, the sending account is the default.
+     */
+    proofSubmitter?: Address | null | undefined
+    withdrawal: Withdrawal
+  }
+export type EstimateFinalizeWithdrawalGasReturnType = bigint
+export type EstimateFinalizeWithdrawalGasErrorType =
+  | EstimateContractGasErrorType
+  | ErrorType
+
+/**
+ * Estimates gas required to finalize a withdrawal that occurred on an L2.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/estimateFinalizeWithdrawalGas
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateFinalizeWithdrawalGasParameters}
+ * @returns Estimated gas. {@link EstimateFinalizeWithdrawalGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { estimateFinalizeWithdrawalGas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const gas = await estimateFinalizeWithdrawalGas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   targetChain: optimism,
+ *   withdrawal: { ... },
+ * })
+ */
+export async function estimateFinalizeWithdrawalGas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateFinalizeWithdrawalGasParameters<
+    chain,
+    account,
+    chainOverride
+  >,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    proofSubmitter,
+    targetChain,
+    withdrawal,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const [functionName, args, abi] = proofSubmitter
+    ? [
+        'finalizeWithdrawalTransactionExternalProof',
+        [withdrawal, proofSubmitter],
+        portal2Abi,
+      ]
+    : ['finalizeWithdrawalTransaction', [withdrawal], portalAbi]
+
+  const params = {
+    account,
+    abi,
+    address: portalAddress,
+    functionName,
+    args,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    // TODO: Not sure `chain` is necessary since it's not used downstream
+    // in `estimateContractGas` or `estimateGas`
+    // @ts-expect-error
+    chain,
+  } satisfies EstimateContractGasParameters
+
+  return estimateContractGas(client, params as any)
+}

node_modules/viem/op-stack/actions/estimateInitiateWithdrawalGas.ts

@@ -0,0 +1,125 @@
+import type { Address } from 'abitype'
+import {
+  type EstimateContractGasErrorType,
+  type EstimateContractGasParameters,
+  estimateContractGas,
+} from '../../actions/public/estimateContractGas.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { l2ToL1MessagePasserAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+import type { WithdrawalRequest } from '../types/withdrawal.js'
+
+export type EstimateInitiateWithdrawalGasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> & {
+    /** Gas limit for transaction execution on the L2. */
+    gas?: bigint | undefined
+    /**
+     * Withdrawal request.
+     * Supplied to the L2ToL1MessagePasser `initiateWithdrawal` method.
+     */
+    request: WithdrawalRequest
+  }
+export type EstimateInitiateWithdrawalGasReturnType = bigint
+export type EstimateInitiateWithdrawalGasErrorType =
+  | EstimateContractGasErrorType
+  | ErrorType
+
+/**
+ * Estimates gas required to initiate a [withdrawal](https://community.optimism.io/docs/protocol/withdrawal-flow/#withdrawal-initiating-transaction) on an L2 to the L1.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/estimateInitiateWithdrawalGas
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateInitiateWithdrawalGasParameters}
+ * @returns Estimated gas. {@link EstimateInitiateWithdrawalGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { estimateInitiateWithdrawalGas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const gas = await estimateInitiateWithdrawalGas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   request: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ * })
+ */
+export async function estimateInitiateWithdrawalGas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateInitiateWithdrawalGasParameters<
+    chain,
+    account,
+    chainOverride
+  >,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    request: { data = '0x', gas: l1Gas, to, value },
+  } = parameters
+
+  const params = {
+    account,
+    abi: l2ToL1MessagePasserAbi,
+    address: contracts.l2ToL1MessagePasser.address,
+    functionName: 'initiateWithdrawal',
+    args: [to, l1Gas, data],
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    value,
+    // TODO: Not sure `chain` is necessary since it's not used downstream
+    // in `estimateContractGas` or `estimateGas`
+    // @ts-expect-error
+    chain,
+  } satisfies EstimateContractGasParameters<
+    typeof l2ToL1MessagePasserAbi,
+    'initiateWithdrawal'
+  >
+  return estimateContractGas(client, params as any)
+}

node_modules/viem/op-stack/actions/estimateL1Fee.ts

@@ -0,0 +1,112 @@
+import type { Address } from 'abitype'
+
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type { Chain, GetChainParameter } from '../../types/chain.js'
+import type {
+  TransactionRequestEIP1559,
+  TransactionSerializable,
+} from '../../types/transaction.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import { getChainContractAddress } from '../../utils/chain/getChainContractAddress.js'
+import type { HexToNumberErrorType } from '../../utils/encoding/fromHex.js'
+import {
+  type SerializeTransactionErrorType,
+  serializeTransaction,
+} from '../../utils/transaction/serializeTransaction.js'
+import { parseGwei } from '../../utils/unit/parseGwei.js'
+import { gasPriceOracleAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+
+export type EstimateL1FeeParameters<
+  TChain extends Chain | undefined = Chain | undefined,
+  TAccount extends Account | undefined = Account | undefined,
+  TChainOverride extends Chain | undefined = undefined,
+> = Omit<TransactionRequestEIP1559, 'from'> &
+  GetAccountParameter<TAccount> &
+  GetChainParameter<TChain, TChainOverride> & {
+    /** Gas price oracle address. */
+    gasPriceOracleAddress?: Address | undefined
+  }
+
+export type EstimateL1FeeReturnType = bigint
+
+export type EstimateL1FeeErrorType =
+  | RequestErrorType
+  | SerializeTransactionErrorType
+  | HexToNumberErrorType
+  | ReadContractErrorType
+  | ErrorType
+
+/**
+ * Estimates the L1 data fee required to execute an L2 transaction.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateL1FeeParameters}
+ * @returns The fee (in wei). {@link EstimateL1FeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateL1Fee } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const l1Fee = await estimateL1Fee(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function estimateL1Fee<
+  TChain extends Chain | undefined,
+  TAccount extends Account | undefined,
+  TChainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, TChain, TAccount>,
+  args: EstimateL1FeeParameters<TChain, TAccount, TChainOverride>,
+): Promise<EstimateL1FeeReturnType> {
+  const {
+    chain = client.chain,
+    gasPriceOracleAddress: gasPriceOracleAddress_,
+  } = args
+
+  const gasPriceOracleAddress = (() => {
+    if (gasPriceOracleAddress_) return gasPriceOracleAddress_
+    if (chain)
+      return getChainContractAddress({
+        chain,
+        contract: 'gasPriceOracle',
+      })
+    return contracts.gasPriceOracle.address
+  })()
+
+  const transaction = serializeTransaction({
+    ...args,
+    chainId: chain?.id ?? 1,
+    type: 'eip1559',
+
+    // Set upper-limit-ish stub values. Shouldn't affect the estimate too much as we are
+    // tweaking dust bytes here (as opposed to long `data` bytes).
+    // See: https://github.com/ethereum-optimism/optimism/blob/54d02df55523c9e1b4b38ed082c12a42087323a0/packages/contracts-bedrock/src/L2/GasPriceOracle.sol#L242-L248.
+    gas: args.data ? 300_000n : 21_000n,
+    maxFeePerGas: parseGwei('5'),
+    maxPriorityFeePerGas: parseGwei('1'),
+    nonce: 1,
+  } as TransactionSerializable)
+
+  return readContract(client, {
+    abi: gasPriceOracleAbi,
+    address: gasPriceOracleAddress,
+    functionName: 'getL1Fee',
+    args: [transaction as any],
+  })
+}

node_modules/viem/op-stack/actions/estimateL1Gas.ts

@@ -0,0 +1,112 @@
+import type { Address } from 'abitype'
+
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type { Chain, GetChainParameter } from '../../types/chain.js'
+import type {
+  TransactionRequestEIP1559,
+  TransactionSerializable,
+} from '../../types/transaction.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import { getChainContractAddress } from '../../utils/chain/getChainContractAddress.js'
+import type { HexToNumberErrorType } from '../../utils/encoding/fromHex.js'
+import {
+  type SerializeTransactionErrorType,
+  serializeTransaction,
+} from '../../utils/transaction/serializeTransaction.js'
+import { parseGwei } from '../../utils/unit/parseGwei.js'
+import { gasPriceOracleAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+
+export type EstimateL1GasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = Omit<TransactionRequestEIP1559, 'from'> &
+  GetAccountParameter<account> &
+  GetChainParameter<chain, chainOverride> & {
+    /** Gas price oracle address. */
+    gasPriceOracleAddress?: Address | undefined
+  }
+
+export type EstimateL1GasReturnType = bigint
+
+export type EstimateL1GasErrorType =
+  | RequestErrorType
+  | SerializeTransactionErrorType
+  | HexToNumberErrorType
+  | ReadContractErrorType
+  | ErrorType
+
+/**
+ * Estimates the L1 data gas required to execute an L2 transaction.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateL1GasParameters}
+ * @returns The gas estimate. {@link EstimateL1GasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateL1Gas } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const l1Gas = await estimateL1Gas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function estimateL1Gas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: EstimateL1GasParameters<chain, account, chainOverride>,
+): Promise<EstimateL1GasReturnType> {
+  const {
+    chain = client.chain,
+    gasPriceOracleAddress: gasPriceOracleAddress_,
+  } = args
+
+  const gasPriceOracleAddress = (() => {
+    if (gasPriceOracleAddress_) return gasPriceOracleAddress_
+    if (chain)
+      return getChainContractAddress({
+        chain,
+        contract: 'gasPriceOracle',
+      })
+    return contracts.gasPriceOracle.address
+  })()
+
+  const transaction = serializeTransaction({
+    ...args,
+    chainId: chain?.id ?? 1,
+    type: 'eip1559',
+
+    // Set upper-limit-ish stub values. Shouldn't affect the estimate too much as we are
+    // tweaking dust bytes here (as opposed to long `data` bytes).
+    // See: https://github.com/ethereum-optimism/optimism/blob/54d02df55523c9e1b4b38ed082c12a42087323a0/packages/contracts-bedrock/src/L2/GasPriceOracle.sol#L242-L248.
+    gas: args.data ? 300_000n : 21_000n,
+    maxFeePerGas: parseGwei('5'),
+    maxPriorityFeePerGas: parseGwei('1'),
+    nonce: 1,
+  } as TransactionSerializable)
+
+  return readContract(client, {
+    abi: gasPriceOracleAbi,
+    address: gasPriceOracleAddress,
+    functionName: 'getL1GasUsed',
+    args: [transaction as any],
+  })
+}

node_modules/viem/op-stack/actions/estimateOperatorFee.ts

@@ -0,0 +1,119 @@
+import type { Address } from 'abitype'
+
+import {
+  type EstimateGasErrorType,
+  type EstimateGasParameters,
+  estimateGas,
+} from '../../actions/public/estimateGas.js'
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type { Chain, GetChainParameter } from '../../types/chain.js'
+import type { TransactionRequestEIP1559 } from '../../types/transaction.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import { getChainContractAddress } from '../../utils/chain/getChainContractAddress.js'
+import type { HexToNumberErrorType } from '../../utils/encoding/fromHex.js'
+import { l1BlockAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+
+export type EstimateOperatorFeeParameters<
+  TChain extends Chain | undefined = Chain | undefined,
+  TAccount extends Account | undefined = Account | undefined,
+  TChainOverride extends Chain | undefined = undefined,
+> = Omit<TransactionRequestEIP1559, 'from'> &
+  GetAccountParameter<TAccount> &
+  GetChainParameter<TChain, TChainOverride> & {
+    /** L1 block attributes contract address. */
+    l1BlockAddress?: Address | undefined
+  }
+
+export type EstimateOperatorFeeReturnType = bigint
+
+export type EstimateOperatorFeeErrorType =
+  | RequestErrorType
+  | EstimateGasErrorType
+  | HexToNumberErrorType
+  | ReadContractErrorType
+  | ErrorType
+
+/**
+ * Estimates the operator fee required to execute an L2 transaction.
+ *
+ * Operator fees are part of the Isthmus upgrade and allow OP Stack operators
+ * to recover costs related to Alt-DA, ZK proving, or custom gas tokens.
+ * Returns 0 for pre-Isthmus chains or when operator fee functions don't exist.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateOperatorFeeParameters}
+ * @returns The operator fee (in wei). {@link EstimateOperatorFeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateOperatorFee } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const operatorFee = await estimateOperatorFee(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function estimateOperatorFee<
+  TChain extends Chain | undefined,
+  TAccount extends Account | undefined,
+  TChainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, TChain, TAccount>,
+  args: EstimateOperatorFeeParameters<TChain, TAccount, TChainOverride>,
+): Promise<EstimateOperatorFeeReturnType> {
+  const { chain = client.chain, l1BlockAddress: l1BlockAddress_ } = args
+
+  const l1BlockAddress = (() => {
+    if (l1BlockAddress_) return l1BlockAddress_
+    if (chain?.contracts?.l1Block)
+      return getChainContractAddress({
+        chain,
+        contract: 'l1Block',
+      })
+    return contracts.l1Block.address
+  })()
+
+  // Try to get operator fee parameters. If any of these calls fail,
+  // it means this is a pre-Isthmus chain and operator fees don't apply
+  try {
+    // Get operator fee parameters first to fail fast if not supported
+    const [operatorFeeScalar, operatorFeeConstant] = await Promise.all([
+      readContract(client, {
+        abi: l1BlockAbi,
+        address: l1BlockAddress,
+        functionName: 'operatorFeeScalar',
+      }),
+      readContract(client, {
+        abi: l1BlockAbi,
+        address: l1BlockAddress,
+        functionName: 'operatorFeeConstant',
+      }),
+    ])
+
+    // Estimate gas for the actual transaction
+    const gasUsed = await estimateGas(client, args as EstimateGasParameters)
+
+    // Calculate operator fee: saturatingAdd(saturatingMul(gasUsed, scalar) / 1e6, constant)
+    // Using saturating arithmetic to prevent overflow
+    const scaledFee = (gasUsed * BigInt(operatorFeeScalar)) / 1_000_000n
+    return scaledFee + BigInt(operatorFeeConstant)
+  } catch {
+    // If any call fails, this is likely a pre-Isthmus chain or the contract
+    // doesn't support these functions. Return 0 for operator fee.
+    return 0n
+  }
+}

node_modules/viem/op-stack/actions/estimateProveWithdrawalGas.ts

@@ -0,0 +1,146 @@
+import type { Address } from 'abitype'
+import {
+  type EstimateContractGasErrorType,
+  type EstimateContractGasParameters,
+  estimateContractGas,
+} from '../../actions/public/estimateContractGas.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hex } from '../../types/misc.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+
+export type EstimateProveWithdrawalGasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'> & {
+    /** Gas limit for transaction execution on the L2. */
+    gas?: bigint | undefined
+    l2OutputIndex: bigint
+    outputRootProof: {
+      version: Hex
+      stateRoot: Hex
+      messagePasserStorageRoot: Hex
+      latestBlockhash: Hex
+    }
+    withdrawalProof: readonly Hex[]
+    withdrawal: {
+      data: Hex
+      gasLimit: bigint
+      nonce: bigint
+      sender: Address
+      target: Address
+      value: bigint
+    }
+  }
+export type EstimateProveWithdrawalGasReturnType = bigint
+export type EstimateProveWithdrawalGasErrorType =
+  | EstimateContractGasErrorType
+  | ErrorType
+
+/**
+ * Estimates gas required to prove a withdrawal that occurred on an L2.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/estimateProveWithdrawalGas
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateProveWithdrawalGasParameters}
+ * @returns Estimated gas. {@link EstimateProveWithdrawalGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { estimateProveWithdrawalGas } from 'viem/op-stack'
+ *
+ * const client = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const gas = await estimateProveWithdrawalGas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   l2OutputIndex: 4529n,
+ *   outputRootProof: { ... },
+ *   targetChain: optimism,
+ *   withdrawalProof: [ ... ],
+ *   withdrawal: { ... },
+ * })
+ */
+export async function estimateProveWithdrawalGas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: EstimateProveWithdrawalGasParameters<
+    chain,
+    account,
+    chainOverride
+  >,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    l2OutputIndex,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    outputRootProof,
+    targetChain,
+    withdrawalProof,
+    withdrawal,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const params = {
+    account,
+    abi: portalAbi,
+    address: portalAddress,
+    functionName: 'proveWithdrawalTransaction',
+    args: [withdrawal, l2OutputIndex, outputRootProof, withdrawalProof],
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    // TODO: Not sure `chain` is necessary since it's not used downstream
+    // in `estimateContractGas` or `estimateGas`
+    // @ts-expect-error
+    chain,
+  } satisfies EstimateContractGasParameters<
+    typeof portalAbi,
+    'proveWithdrawalTransaction'
+  >
+  return estimateContractGas(client, params as any)
+}

node_modules/viem/op-stack/actions/estimateTotalFee.ts

@@ -0,0 +1,94 @@
+import {
+  type EstimateGasErrorType,
+  type EstimateGasParameters,
+  estimateGas,
+} from '../../actions/public/estimateGas.js'
+import {
+  type GetGasPriceErrorType,
+  getGasPrice,
+} from '../../actions/public/getGasPrice.js'
+import {
+  type PrepareTransactionRequestErrorType,
+  type PrepareTransactionRequestParameters,
+  prepareTransactionRequest,
+} from '../../actions/wallet/prepareTransactionRequest.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type { Chain } from '../../types/chain.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import {
+  type EstimateL1FeeErrorType,
+  type EstimateL1FeeParameters,
+  estimateL1Fee,
+} from './estimateL1Fee.js'
+import {
+  type EstimateOperatorFeeErrorType,
+  type EstimateOperatorFeeParameters,
+  estimateOperatorFee,
+} from './estimateOperatorFee.js'
+
+export type EstimateTotalFeeParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = EstimateL1FeeParameters<chain, account, chainOverride> &
+  EstimateOperatorFeeParameters<chain, account, chainOverride>
+
+export type EstimateTotalFeeReturnType = bigint
+
+export type EstimateTotalFeeErrorType =
+  | RequestErrorType
+  | PrepareTransactionRequestErrorType
+  | EstimateL1FeeErrorType
+  | EstimateOperatorFeeErrorType
+  | EstimateGasErrorType
+  | GetGasPriceErrorType
+  | ErrorType
+
+/**
+ * Estimates the L1 data fee + L2 fee + operator fee to execute an L2 transaction.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateTotalFeeParameters}
+ * @returns The fee (in wei). {@link EstimateTotalFeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateTotalFee } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const totalGas = await estimateTotalFee(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function estimateTotalFee<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: EstimateTotalFeeParameters<chain, account, chainOverride>,
+): Promise<EstimateTotalFeeReturnType> {
+  // Populate transaction with required fields to accurately estimate gas.
+  const request = await prepareTransactionRequest(
+    client,
+    args as PrepareTransactionRequestParameters,
+  )
+
+  const [l1Fee, operatorFee, l2Gas, l2GasPrice] = await Promise.all([
+    estimateL1Fee(client, request as EstimateL1FeeParameters),
+    estimateOperatorFee(client, request as EstimateOperatorFeeParameters),
+    estimateGas(client, request as EstimateGasParameters),
+    getGasPrice(client),
+  ])
+
+  return l1Fee + operatorFee + l2Gas * l2GasPrice
+}

node_modules/viem/op-stack/actions/estimateTotalGas.ts

@@ -0,0 +1,70 @@
+import {
+  type EstimateGasErrorType,
+  type EstimateGasParameters,
+  estimateGas,
+} from '../../actions/public/estimateGas.js'
+import type { PrepareTransactionRequestErrorType } from '../../actions/wallet/prepareTransactionRequest.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type { Chain } from '../../types/chain.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import {
+  type EstimateL1GasErrorType,
+  type EstimateL1GasParameters,
+  estimateL1Gas,
+} from './estimateL1Gas.js'
+
+export type EstimateTotalGasParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = EstimateL1GasParameters<chain, account, chainOverride>
+
+export type EstimateTotalGasReturnType = bigint
+
+export type EstimateTotalGasErrorType =
+  | RequestErrorType
+  | PrepareTransactionRequestErrorType
+  | EstimateL1GasErrorType
+  | EstimateGasErrorType
+  | ErrorType
+
+/**
+ * Estimates the amount of L1 data gas + L2 gas required to execute an L2 transaction.
+ *
+ * @param client - Client to use
+ * @param parameters - {@link EstimateTotalGasParameters}
+ * @returns The gas estimate. {@link EstimateTotalGasReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { estimateTotalGas } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const totalGas = await estimateTotalGas(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *   value: parseEther('1'),
+ * })
+ */
+export async function estimateTotalGas<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  args: EstimateTotalGasParameters<chain, account, chainOverride>,
+): Promise<EstimateTotalGasReturnType> {
+  const [l1Gas, l2Gas] = await Promise.all([
+    estimateL1Gas(client, args as EstimateL1GasParameters),
+    estimateGas(client, args as EstimateGasParameters),
+  ])
+
+  return l1Gas + l2Gas
+}

node_modules/viem/op-stack/actions/finalizeWithdrawal.ts

@@ -0,0 +1,133 @@
+import type { Address } from 'abitype'
+import {
+  type WriteContractErrorType,
+  type WriteContractParameters,
+  writeContract,
+} from '../../actions/wallet/writeContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash } from '../../types/misc.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portal2Abi, portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { Withdrawal } from '../types/withdrawal.js'
+import type { EstimateFinalizeWithdrawalGasErrorType } from './estimateFinalizeWithdrawalGas.js'
+
+export type FinalizeWithdrawalParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'> & {
+    /**
+     * Gas limit for transaction execution on the L1.
+     * `null` to skip gas estimation & defer calculation to signer.
+     */
+    gas?: bigint | null | undefined
+    /**
+     * Finalize against a provided proof submitter.
+     * If unspecified, the sending account is the default.
+     */
+    proofSubmitter?: Address | null | undefined
+    withdrawal: Withdrawal
+  }
+export type FinalizeWithdrawalReturnType = Hash
+export type FinalizeWithdrawalErrorType =
+  | EstimateFinalizeWithdrawalGasErrorType
+  | WriteContractErrorType
+  | ErrorType
+
+/**
+ * Finalizes a withdrawal that occurred on an L2. Used in the Withdrawal flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/finalizeWithdrawal
+ *
+ * @param client - Client to use
+ * @param parameters - {@link FinalizeWithdrawalParameters}
+ * @returns The finalize transaction hash. {@link FinalizeWithdrawalReturnType}
+ *
+ * @example
+ * import { createWalletClient, http } from 'viem'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { finalizeWithdrawal } from 'viem/op-stack'
+ *
+ * const walletClientL1 = createWalletClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const request = await finalizeWithdrawal(walletClientL1, {
+ *   targetChain: optimism,
+ *   withdrawal: { ... },
+ * })
+ */
+export async function finalizeWithdrawal<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: FinalizeWithdrawalParameters<chain, account, chainOverride>,
+): Promise<FinalizeWithdrawalReturnType> {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    proofSubmitter,
+    targetChain,
+    withdrawal,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const [functionName, args, abi] = proofSubmitter
+    ? [
+        'finalizeWithdrawalTransactionExternalProof',
+        [withdrawal, proofSubmitter],
+        portal2Abi,
+      ]
+    : ['finalizeWithdrawalTransaction', [withdrawal], portalAbi]
+
+  return writeContract(client, {
+    account: account!,
+    abi,
+    address: portalAddress,
+    chain,
+    functionName,
+    args,
+    gas: gas ?? undefined,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+  } satisfies WriteContractParameters as any)
+}

node_modules/viem/op-stack/actions/getGame.ts

@@ -0,0 +1,99 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import {
+  GameNotFoundError,
+  type GameNotFoundErrorType,
+} from '../errors/withdrawal.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { Game } from '../types/withdrawal.js'
+import { type GetGamesErrorType, getGames } from './getGames.js'
+
+export type GetGameParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<
+    _derivedChain,
+    'portal' | 'disputeGameFactory'
+  > & {
+    /**
+     * The minimum block number of the dispute game.
+     */
+    l2BlockNumber: bigint
+    /**
+     * Limit of games to extract.
+     * @default 100
+     */
+    limit?: number | undefined
+    /**
+     * Strategy for extracting a dispute game.
+     *
+     * - `latest` - Returns the latest dispute game.
+     * - `random` - Returns a random dispute game.
+     */
+    strategy?: 'latest' | 'random'
+  }
+export type GetGameReturnType = Game & {
+  l2BlockNumber: bigint
+}
+
+export type GetGameErrorType =
+  | GetGamesErrorType
+  | GameNotFoundErrorType
+  | ErrorType
+
+/**
+ * Retrieves a valid dispute game on an L2 that occurred after a provided L2 block number.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getGame
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetGameParameters}
+ * @returns A valid dispute game. {@link GetGameReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getGame } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const game = await getGame(publicClientL1, {
+ *   l2BlockNumber: 69420n,
+ *   targetChain: optimism
+ * })
+ */
+export async function getGame<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetGameParameters<chain, chainOverride>,
+): Promise<GetGameReturnType> {
+  const { l2BlockNumber, strategy = 'latest' } = parameters
+
+  const latestGames = await getGames(client, parameters)
+
+  const games = latestGames.filter((game) => game.l2BlockNumber > l2BlockNumber)
+
+  const game = (() => {
+    if (strategy === 'random')
+      return games[Math.floor(Math.random() * games.length)]
+    return games[0]
+  })()
+
+  if (!game) throw new GameNotFoundError()
+  return game
+}

node_modules/viem/op-stack/actions/getGames.ts

@@ -0,0 +1,146 @@
+import type { Address } from 'abitype'
+import {
+  type MulticallErrorType,
+  multicall,
+} from '../../actions/public/multicall.js'
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import { disputeGameAbi, disputeGameFactoryAbi, portal2Abi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { Game } from '../types/withdrawal.js'
+
+export type GetGamesParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<
+    _derivedChain,
+    'portal' | 'disputeGameFactory'
+  > & {
+    /**
+     * Filter by minimum block number of the dispute games.
+     */
+    l2BlockNumber?: bigint | undefined
+    /**
+     * Limit of games to extract.
+     * @default 100
+     */
+    limit?: number | undefined
+  }
+export type GetGamesReturnType = (Game & {
+  l2BlockNumber: bigint
+})[]
+export type GetGamesErrorType =
+  | ReadContractErrorType
+  | MulticallErrorType
+  | ErrorType
+
+/**
+ * Retrieves dispute games for an L2.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getGame
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetGameParameters}
+ * @returns Dispute games. {@link GetGameReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getGames } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const games = await getGames(publicClientL1, {
+ *   targetChain: optimism
+ * })
+ */
+export async function getGames<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetGamesParameters<chain, chainOverride>,
+): Promise<GetGamesReturnType> {
+  const {
+    chain = client.chain,
+    l2BlockNumber,
+    limit = 100,
+    targetChain,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const disputeGameFactoryAddress = (() => {
+    if (parameters.disputeGameFactoryAddress)
+      return parameters.disputeGameFactoryAddress
+    if (chain)
+      return targetChain!.contracts.disputeGameFactory[chain.id].address
+    return Object.values(targetChain!.contracts.disputeGameFactory)[0].address
+  })()
+
+  const [gameCount, gameType] = await Promise.all([
+    readContract(client, {
+      abi: disputeGameFactoryAbi,
+      functionName: 'gameCount',
+      args: [],
+      address: disputeGameFactoryAddress,
+    }),
+    readContract(client, {
+      abi: portal2Abi,
+      functionName: 'respectedGameType',
+      address: portalAddress,
+    }),
+  ])
+
+  const rawGames = (await readContract(client, {
+    abi: disputeGameFactoryAbi,
+    functionName: 'findLatestGames',
+    address: disputeGameFactoryAddress,
+    args: [
+      gameType,
+      BigInt(Math.max(0, Number(gameCount - 1n))),
+      BigInt(Math.min(limit, Number(gameCount))),
+    ],
+  })) as Game[]
+
+  const l2SequenceNumbers = await multicall(client, {
+    allowFailure: false,
+    contracts: rawGames.map((game) => ({
+      abi: disputeGameAbi,
+      address: `0x${game.metadata.slice(26)}` as Address,
+      functionName: 'l2SequenceNumber' as const,
+    })),
+  })
+
+  const games = rawGames
+    .map((game, i) => {
+      const blockNumber = l2SequenceNumbers[i] as bigint
+      return !l2BlockNumber || blockNumber > l2BlockNumber
+        ? { ...game, l2BlockNumber: blockNumber }
+        : null
+    })
+    .filter(Boolean) as GetGamesReturnType
+
+  return games
+}

node_modules/viem/op-stack/actions/getL1BaseFee.ts

@@ -0,0 +1,81 @@
+import type { Address } from 'abitype'
+
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { PrepareTransactionRequestErrorType } from '../../actions/wallet/prepareTransactionRequest.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Chain, GetChainParameter } from '../../types/chain.js'
+import type { RequestErrorType } from '../../utils/buildRequest.js'
+import { getChainContractAddress } from '../../utils/chain/getChainContractAddress.js'
+import type { HexToNumberErrorType } from '../../utils/encoding/fromHex.js'
+
+import { gasPriceOracleAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+
+export type GetL1BaseFeeParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = undefined,
+> = GetChainParameter<chain, chainOverride> & {
+  /** Gas price oracle address. */
+  gasPriceOracleAddress?: Address | undefined
+}
+
+export type GetL1BaseFeeReturnType = bigint
+
+export type GetL1BaseFeeErrorType =
+  | RequestErrorType
+  | PrepareTransactionRequestErrorType
+  | HexToNumberErrorType
+  | ReadContractErrorType
+  | ErrorType
+
+/**
+ * get the L1 base fee
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetL1BaseFeeParameters}
+ * @returns The basefee (in wei). {@link GetL1BaseFeeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http, parseEther } from 'viem'
+ * import { optimism } from 'viem/chains'
+ * import { getL1BaseFee } from 'viem/chains/optimism'
+ *
+ * const client = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ * const l1BaseFee = await getL1BaseFee(client)
+ */
+export async function getL1BaseFee<
+  chain extends Chain | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain>,
+  args?: GetL1BaseFeeParameters<chain, chainOverride> | undefined,
+): Promise<GetL1BaseFeeReturnType> {
+  const {
+    chain = client.chain,
+    gasPriceOracleAddress: gasPriceOracleAddress_,
+  } = args || {}
+
+  const gasPriceOracleAddress = (() => {
+    if (gasPriceOracleAddress_) return gasPriceOracleAddress_
+    if (chain)
+      return getChainContractAddress({
+        chain,
+        contract: 'gasPriceOracle',
+      })
+    return contracts.gasPriceOracle.address
+  })()
+
+  return readContract(client, {
+    abi: gasPriceOracleAbi,
+    address: gasPriceOracleAddress,
+    functionName: 'l1BaseFee',
+  })
+}

node_modules/viem/op-stack/actions/getL2Output.ts

@@ -0,0 +1,130 @@
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hex } from '../../types/misc.js'
+import type { OneOf } from '../../types/utils.js'
+import { l2OutputOracleAbi } from '../abis.js'
+import type { TargetChain } from '../types/chain.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import { type GetGameParameters, getGame } from './getGame.js'
+import {
+  type GetPortalVersionParameters,
+  getPortalVersion,
+} from './getPortalVersion.js'
+
+export type GetL2OutputParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  OneOf<
+    | GetContractAddressParameter<_derivedChain, 'l2OutputOracle'>
+    | (GetContractAddressParameter<
+        _derivedChain,
+        'portal' | 'disputeGameFactory'
+      > & {
+        /**
+         * Limit of games to extract.
+         * @default 100
+         */
+        limit?: number | undefined
+      })
+  > & {
+    l2BlockNumber: bigint
+  }
+export type GetL2OutputReturnType = {
+  outputIndex: bigint
+  outputRoot: Hex
+  timestamp: bigint
+  l2BlockNumber: bigint
+}
+export type GetL2OutputErrorType = ReadContractErrorType | ErrorType
+
+/**
+ * Retrieves the first L2 output proposal that occurred after a provided block number.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getL2Output
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetL2OutputParameters}
+ * @returns The L2 output. {@link GetL2OutputReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getL2Output } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const output = await getL2Output(publicClientL1, {
+ *   l2BlockNumber: 69420n,
+ *   targetChain: optimism
+ * })
+ */
+export async function getL2Output<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetL2OutputParameters<chain, chainOverride>,
+): Promise<GetL2OutputReturnType> {
+  const { chain = client.chain, l2BlockNumber, targetChain } = parameters
+
+  const version = await getPortalVersion(
+    client,
+    parameters as GetPortalVersionParameters,
+  )
+
+  if (version.major >= 3) {
+    const game = await getGame(client, parameters as GetGameParameters)
+    return {
+      l2BlockNumber: game.l2BlockNumber,
+      outputIndex: game.index,
+      outputRoot: game.rootClaim,
+      timestamp: game.timestamp,
+    }
+  }
+
+  const l2OutputOracleAddress = (() => {
+    if (parameters.l2OutputOracleAddress)
+      return parameters.l2OutputOracleAddress
+    if (chain)
+      return (targetChain as unknown as TargetChain)!.contracts.l2OutputOracle[
+        chain.id
+      ].address
+    return (
+      Object.values(
+        (targetChain as unknown as TargetChain)!.contracts.l2OutputOracle,
+      ) as any
+    )[0].address
+  })()
+
+  const outputIndex = await readContract(client, {
+    address: l2OutputOracleAddress,
+    abi: l2OutputOracleAbi,
+    functionName: 'getL2OutputIndexAfter',
+    args: [l2BlockNumber],
+  })
+  const output = await readContract(client, {
+    address: l2OutputOracleAddress,
+    abi: l2OutputOracleAbi,
+    functionName: 'getL2Output',
+    args: [outputIndex],
+  })
+
+  return { outputIndex, ...output }
+}

node_modules/viem/op-stack/actions/getPortalVersion.ts

@@ -0,0 +1,87 @@
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import { withCache } from '../../utils/promise/withCache.js'
+import { portal2Abi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+
+export type GetPortalVersionParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'>
+
+export type GetPortalVersionReturnType = {
+  major: number
+  minor: number
+  patch: number
+}
+
+export type GetPortalVersionErrorType = ReadContractErrorType | ErrorType
+
+/**
+ * Retrieves the current version of the Portal contract.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getPortalVersion
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetPortalVersionParameters}
+ * @returns The version object.
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { mainnet } from 'viem/chains'
+ * import { getPortalVersion } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const version = await getPortalVersion(publicClientL1, {
+ *   targetChain: optimism,
+ * })
+ *
+ * if (version.major > 3)
+ *   console.log('Fault proofs are enabled on this version of optimism')
+ * console.log('Fault proofs are not enabled on this version of optimism')
+ */
+export async function getPortalVersion<
+  chain extends Chain | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain>,
+  parameters: GetPortalVersionParameters<chain, chainOverride>,
+) {
+  const { chain = client.chain, targetChain } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const version = await withCache(
+    () =>
+      readContract(client, {
+        abi: portal2Abi,
+        address: portalAddress,
+        functionName: 'version',
+      }),
+    { cacheKey: ['portalVersion', portalAddress].join('.'), cacheTime: 300 },
+  )
+
+  const [major, minor, patch] = version.split('.').map(Number)
+
+  return { major, minor, patch }
+}

node_modules/viem/op-stack/actions/getTimeToFinalize.ts

@@ -0,0 +1,175 @@
+import {
+  type MulticallErrorType,
+  multicall,
+} from '../../actions/public/multicall.js'
+import { readContract } from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import { BaseError } from '../../errors/base.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash } from '../../types/misc.js'
+import { l2OutputOracleAbi, portal2Abi, portalAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import { getPortalVersion } from './getPortalVersion.js'
+
+export type GetTimeToFinalizeParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'l2OutputOracle' | 'portal'> & {
+    withdrawalHash: Hash
+  }
+export type GetTimeToFinalizeReturnType = {
+  /** The finalization period (in seconds). */
+  period: number
+  /** Seconds until the withdrawal can be finalized. */
+  seconds: number
+  /** Timestamp of when the withdrawal can be finalized. */
+  timestamp: number
+}
+export type GetTimeToFinalizeErrorType = MulticallErrorType | ErrorType
+
+const buffer = 10
+
+/**
+ * Returns the time until the withdrawal transaction can be finalized. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getTimeToFinalize
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetTimeToFinalizeParameters}
+ * @returns Time until finalize. {@link GetTimeToFinalizeReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getTimeToFinalize } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const receipt = await publicClientL2.getTransactionReceipt({
+ *   hash: '0x9a2f4283636ddeb9ac32382961b22c177c9e86dd3b283735c154f897b1a7ff4a',
+ * })
+ *
+ * const [withdrawal] = getWithdrawals(receipt)
+ *
+ * const { seconds } = await getTimeToFinalize(publicClientL1, {
+ *   withdrawalHash: withdrawal.withdrawalHash,
+ *   targetChain: optimism
+ * })
+ */
+export async function getTimeToFinalize<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetTimeToFinalizeParameters<chain, chainOverride>,
+): Promise<GetTimeToFinalizeReturnType> {
+  const { chain = client.chain, withdrawalHash, targetChain } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  const portalVersion = await getPortalVersion(client, { portalAddress })
+
+  // Legacy
+  if (portalVersion.major < 3) {
+    const l2OutputOracleAddress = (() => {
+      if (parameters.l2OutputOracleAddress)
+        return parameters.l2OutputOracleAddress
+      if (chain) return targetChain!.contracts.l2OutputOracle[chain.id].address
+      return Object.values(targetChain!.contracts.l2OutputOracle)[0].address
+    })()
+    const [[_outputRoot, proveTimestamp, _l2OutputIndex], period] =
+      await multicall(client, {
+        allowFailure: false,
+        contracts: [
+          {
+            abi: portalAbi,
+            address: portalAddress,
+            functionName: 'provenWithdrawals',
+            args: [withdrawalHash],
+          },
+          {
+            abi: l2OutputOracleAbi,
+            address: l2OutputOracleAddress,
+            functionName: 'FINALIZATION_PERIOD_SECONDS',
+          },
+        ],
+      })
+
+    const secondsSinceProven = Date.now() / 1000 - Number(proveTimestamp)
+    const secondsToFinalize = Number(period) - secondsSinceProven
+
+    const seconds = Math.floor(
+      secondsToFinalize < 0 ? 0 : secondsToFinalize + buffer,
+    )
+    const timestamp = Date.now() + seconds * 1000
+
+    return { period: Number(period), seconds, timestamp }
+  }
+
+  const numProofSubmitters = await readContract(client, {
+    abi: portal2Abi,
+    address: portalAddress,
+    functionName: 'numProofSubmitters',
+    args: [withdrawalHash],
+  }).catch(() => 1n)
+
+  const proofSubmitter = await readContract(client, {
+    abi: portal2Abi,
+    address: portalAddress,
+    functionName: 'proofSubmitters',
+    args: [withdrawalHash, numProofSubmitters - 1n],
+  }).catch(() => undefined)
+
+  const [[_disputeGameProxy, proveTimestamp], proofMaturityDelaySeconds] =
+    await Promise.all([
+      proofSubmitter
+        ? readContract(client, {
+            abi: portal2Abi,
+            address: portalAddress,
+            functionName: 'provenWithdrawals',
+            args: [withdrawalHash, proofSubmitter],
+          })
+        : Promise.resolve(['0x', 0n]),
+      readContract(client, {
+        abi: portal2Abi,
+        address: portalAddress,
+        functionName: 'proofMaturityDelaySeconds',
+      }),
+    ])
+
+  if (proveTimestamp === 0n)
+    throw new BaseError('Withdrawal has not been proven on L1.')
+
+  const secondsSinceProven = Date.now() / 1000 - Number(proveTimestamp)
+  const secondsToFinalize =
+    Number(proofMaturityDelaySeconds) - secondsSinceProven
+
+  const seconds = Math.floor(
+    secondsToFinalize < 0n ? 0 : secondsToFinalize + buffer,
+  )
+  const timestamp = Date.now() + seconds * 1000
+
+  return { period: Number(proofMaturityDelaySeconds), seconds, timestamp }
+}

node_modules/viem/op-stack/actions/getTimeToNextGame.ts

@@ -0,0 +1,157 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import { type GetGamesErrorType, getGames } from './getGames.js'
+
+export type GetTimeToNextGameParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<
+    _derivedChain,
+    'portal' | 'disputeGameFactory'
+  > & {
+    /**
+     * The buffer to account for discrepancies between non-deterministic time intervals.
+     * @default 1.1
+     */
+    intervalBuffer?: number | undefined
+    /**
+     * The minimum L2 block number of the next game.
+     */
+    l2BlockNumber: bigint
+  }
+export type GetTimeToNextGameReturnType = {
+  /** The estimated interval (in seconds) between L2 dispute games. */
+  interval: number
+  /**
+   * Estimated seconds until the next L2 dispute game.
+   * `0` if the next L2 dispute game has already been submitted.
+   */
+  seconds: number
+  /**
+   * Estimated timestamp of the next L2 dispute game.
+   * `undefined` if the next L2 dispute game has already been submitted.
+   */
+  timestamp?: number | undefined
+}
+export type GetTimeToNextGameErrorType = GetGamesErrorType | ErrorType
+
+/**
+ * Returns the time until the next L2 dispute game (after the provided block number) is submitted.
+ * Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getTimeToNextGame
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetTimeToNextGameParameters}
+ * @returns The L2 transaction hash. {@link GetTimeToNextGameReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getTimeToNextGame } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const { seconds } = await getTimeToNextGame(publicClientL1, {
+ *   l2BlockNumber: 113405763n,
+ *   targetChain: optimism
+ * })
+ */
+export async function getTimeToNextGame<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetTimeToNextGameParameters<chain, chainOverride>,
+): Promise<GetTimeToNextGameReturnType> {
+  const { intervalBuffer = 1.1, l2BlockNumber } = parameters
+
+  const games = await getGames(client, {
+    ...parameters,
+    l2BlockNumber: undefined,
+    limit: 10,
+  })
+
+  if (games.length === 0) {
+    return { interval: 0, seconds: 0, timestamp: undefined }
+  }
+
+  const deltas = games
+    .map(({ l2BlockNumber, timestamp }, index) => {
+      return index === games.length - 1
+        ? null
+        : [
+            games[index + 1].timestamp - timestamp,
+            games[index + 1].l2BlockNumber - l2BlockNumber,
+          ]
+    })
+    .filter(Boolean)
+
+  const interval =
+    deltas.length > 0
+      ? Math.ceil(
+          (deltas as [bigint, bigint][]).reduce(
+            (a, [b]) => Number(a) - Number(b),
+            0,
+          ) / deltas.length,
+        )
+      : 0
+  const blockInterval =
+    deltas.length > 0
+      ? Math.ceil(
+          (deltas as [bigint, bigint][]).reduce(
+            (a, [_, b]) => Number(a) - Number(b),
+            0,
+          ) / deltas.length,
+        )
+      : 0
+
+  const latestGame = games[0]
+  const latestGameTimestamp = Number(latestGame.timestamp) * 1000
+
+  const intervalWithBuffer = Math.ceil(interval * intervalBuffer)
+
+  const now = Date.now()
+
+  const seconds = (() => {
+    // If the current timestamp is lesser than the latest dispute game timestamp,
+    // then we assume that the dispute game has already been submitted.
+    if (now < latestGameTimestamp) return 0
+
+    // If the latest dispute game block is newer than the provided dispute game block number,
+    // then we assume that the dispute game has already been submitted.
+    if (latestGame.l2BlockNumber > l2BlockNumber) return 0
+
+    // If there is only a single game, no interval data
+    if (intervalWithBuffer === 0) return 0
+
+    const elapsedBlocks = Number(l2BlockNumber - latestGame.l2BlockNumber)
+
+    const elapsed = Math.ceil((now - latestGameTimestamp) / 1000)
+    const secondsToNextOutput =
+      intervalWithBuffer - (elapsed % intervalWithBuffer)
+    return elapsedBlocks < blockInterval
+      ? secondsToNextOutput
+      : Math.floor(elapsedBlocks / Number(blockInterval)) * intervalWithBuffer +
+          secondsToNextOutput
+  })()
+
+  const timestamp = seconds > 0 ? now + seconds * 1000 : undefined
+
+  return { interval, seconds, timestamp }
+}

node_modules/viem/op-stack/actions/getTimeToNextL2Output.ts

@@ -0,0 +1,162 @@
+import {
+  type MulticallErrorType,
+  multicall,
+} from '../../actions/public/multicall.js'
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import { l2OutputOracleAbi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+
+export type GetTimeToNextL2OutputParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'l2OutputOracle'> & {
+    /**
+     * The buffer to account for discrepancies between non-deterministic time intervals.
+     * @default 1.1
+     */
+    intervalBuffer?: number | undefined
+    l2BlockNumber: bigint
+  }
+export type GetTimeToNextL2OutputReturnType = {
+  /** The interval (in seconds) between L2 outputs. */
+  interval: number
+  /**
+   * Seconds until the next L2 output.
+   * `0` if the next L2 output has already been submitted.
+   */
+  seconds: number
+  /**
+   * Estimated timestamp of the next L2 output.
+   * `undefined` if the next L2 output has already been submitted.
+   */
+  timestamp?: number | undefined
+}
+export type GetTimeToNextL2OutputErrorType =
+  | MulticallErrorType
+  | ReadContractErrorType
+  | ErrorType
+
+/**
+ * Returns the time until the next L2 output (after the provided block number) is submitted. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getTimeToNextL2Output
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetTimeToNextL2OutputParameters}
+ * @returns The L2 transaction hash. {@link GetTimeToNextL2OutputReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getTimeToNextL2Output } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const { seconds } = await getTimeToNextL2Output(publicClientL1, {
+ *   targetChain: optimism
+ * })
+ */
+export async function getTimeToNextL2Output<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetTimeToNextL2OutputParameters<chain, chainOverride>,
+): Promise<GetTimeToNextL2OutputReturnType> {
+  const {
+    intervalBuffer = 1.1,
+    chain = client.chain,
+    l2BlockNumber,
+    targetChain,
+  } = parameters
+
+  const l2OutputOracleAddress = (() => {
+    if (parameters.l2OutputOracleAddress)
+      return parameters.l2OutputOracleAddress
+    if (chain) return targetChain!.contracts.l2OutputOracle[chain.id].address
+    return Object.values(targetChain!.contracts.l2OutputOracle)[0].address
+  })()
+
+  const [latestOutputIndex, blockTime, blockInterval] = await multicall(
+    client,
+    {
+      allowFailure: false,
+      contracts: [
+        {
+          abi: l2OutputOracleAbi,
+          address: l2OutputOracleAddress,
+          functionName: 'latestOutputIndex',
+        },
+        {
+          abi: l2OutputOracleAbi,
+          address: l2OutputOracleAddress,
+          functionName: 'L2_BLOCK_TIME',
+        },
+        {
+          abi: l2OutputOracleAbi,
+          address: l2OutputOracleAddress,
+          functionName: 'SUBMISSION_INTERVAL',
+        },
+      ],
+    },
+  )
+  const latestOutput = await readContract(client, {
+    abi: l2OutputOracleAbi,
+    address: l2OutputOracleAddress,
+    functionName: 'getL2Output',
+    args: [latestOutputIndex],
+  })
+  const latestOutputTimestamp = Number(latestOutput.timestamp) * 1000
+
+  const interval = Number(blockInterval * blockTime)
+  const intervalWithBuffer = Math.ceil(interval * intervalBuffer)
+
+  const now = Date.now()
+
+  const seconds = (() => {
+    // If the current timestamp is lesser than the latest L2 output timestamp,
+    // then we assume that the L2 output has already been submitted.
+    if (now < latestOutputTimestamp) return 0
+
+    // If the latest L2 output block is newer than the provided L2 block number,
+    // then we assume that the L2 output has already been submitted.
+    if (latestOutput.l2BlockNumber > l2BlockNumber) return 0
+
+    const elapsedBlocks = Number(l2BlockNumber - latestOutput.l2BlockNumber)
+
+    const elapsed = Math.ceil((now - latestOutputTimestamp) / 1000)
+    const secondsToNextOutput =
+      intervalWithBuffer - (elapsed % intervalWithBuffer)
+    return elapsedBlocks < blockInterval
+      ? secondsToNextOutput
+      : Math.floor(elapsedBlocks / Number(blockInterval)) * intervalWithBuffer +
+          secondsToNextOutput
+  })()
+
+  const timestamp = seconds > 0 ? now + seconds * 1000 : undefined
+
+  return { interval, seconds, timestamp }
+}

node_modules/viem/op-stack/actions/getTimeToProve.ts

@@ -0,0 +1,119 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { TransactionReceipt } from '../../types/transaction.js'
+import type { OneOf } from '../../types/utils.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import {
+  type GetPortalVersionErrorType,
+  type GetPortalVersionParameters,
+  getPortalVersion,
+} from './getPortalVersion.js'
+import {
+  type GetTimeToNextGameErrorType,
+  type GetTimeToNextGameParameters,
+  type GetTimeToNextGameReturnType,
+  getTimeToNextGame,
+} from './getTimeToNextGame.js'
+import {
+  type GetTimeToNextL2OutputErrorType,
+  type GetTimeToNextL2OutputParameters,
+  type GetTimeToNextL2OutputReturnType,
+  getTimeToNextL2Output,
+} from './getTimeToNextL2Output.js'
+
+export type GetTimeToProveParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  OneOf<
+    | GetContractAddressParameter<_derivedChain, 'l2OutputOracle'>
+    | GetContractAddressParameter<
+        _derivedChain,
+        'disputeGameFactory' | 'portal'
+      >
+  > & {
+    /**
+     * The buffer to account for discrepancies between non-deterministic time intervals.
+     * @default 1.1
+     */
+    intervalBuffer?:
+      | GetTimeToNextL2OutputParameters['intervalBuffer']
+      | undefined
+    receipt: TransactionReceipt
+  }
+
+export type GetTimeToProveReturnType =
+  | GetTimeToNextGameReturnType
+  | GetTimeToNextL2OutputReturnType
+
+export type GetTimeToProveErrorType =
+  | GetPortalVersionErrorType
+  | GetTimeToNextGameErrorType
+  | GetTimeToNextL2OutputErrorType
+  | ErrorType
+
+/**
+ * Returns the time until the withdrawal transaction is ready to prove. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getTimeToProve
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetTimeToNextL2OutputParameters}
+ * @returns Time until prove step is ready. {@link GetTimeToNextL2OutputReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getTimeToProve } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const receipt = await publicClientL2.getTransactionReceipt({ hash: '0x...' })
+ * const { period, seconds, timestamp } = await getTimeToProve(publicClientL1, {
+ *   receipt,
+ *   targetChain: optimism
+ * })
+ */
+export async function getTimeToProve<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetTimeToProveParameters<chain, chainOverride>,
+): Promise<GetTimeToProveReturnType> {
+  const { receipt } = parameters
+
+  const portalVersion = await getPortalVersion(
+    client,
+    parameters as GetPortalVersionParameters,
+  )
+
+  // Legacy
+  if (portalVersion.major < 3)
+    return getTimeToNextL2Output(client, {
+      ...parameters,
+      l2BlockNumber: receipt.blockNumber,
+    } as GetTimeToNextL2OutputParameters)
+
+  return getTimeToNextGame(client, {
+    ...parameters,
+    l2BlockNumber: receipt.blockNumber,
+  } as GetTimeToNextGameParameters)
+}

node_modules/viem/op-stack/actions/getWithdrawalStatus.ts

@@ -0,0 +1,419 @@
+import type { Address } from 'abitype'
+import {
+  type ReadContractErrorType,
+  readContract,
+} from '../../actions/public/readContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import { ContractFunctionRevertedError } from '../../errors/contract.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash } from '../../types/misc.js'
+import type { TransactionReceipt } from '../../types/transaction.js'
+import type { OneOf } from '../../types/utils.js'
+import { anchorStateRegistryAbi, portal2Abi, portalAbi } from '../abis.js'
+import {
+  ReceiptContainsNoWithdrawalsError,
+  type ReceiptContainsNoWithdrawalsErrorType,
+} from '../errors/withdrawal.js'
+import type { TargetChain } from '../types/chain.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import {
+  type GetWithdrawalsErrorType,
+  getWithdrawals,
+} from '../utils/getWithdrawals.js'
+import {
+  type GetGameErrorType,
+  type GetGameParameters,
+  getGame,
+} from './getGame.js'
+import {
+  type GetL2OutputErrorType,
+  type GetL2OutputParameters,
+  getL2Output,
+} from './getL2Output.js'
+import {
+  type GetPortalVersionParameters,
+  getPortalVersion,
+} from './getPortalVersion.js'
+import {
+  type GetTimeToFinalizeErrorType,
+  type GetTimeToFinalizeParameters,
+  getTimeToFinalize,
+} from './getTimeToFinalize.js'
+
+export type GetWithdrawalStatusParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  OneOf<
+    | GetContractAddressParameter<_derivedChain, 'l2OutputOracle' | 'portal'>
+    | GetContractAddressParameter<
+        _derivedChain,
+        'disputeGameFactory' | 'portal'
+      >
+  > & {
+    /**
+     * Limit of games to extract to check withdrawal status.
+     * @default 100
+     */
+    gameLimit?: number
+  } & OneOf<
+    | {
+        /**
+         * The relative index of the withdrawal in the transaction receipt logs.
+         * @default 0
+         */
+        logIndex?: number
+        /**
+         * The transaction receipt of the withdrawal.
+         */
+        receipt: TransactionReceipt
+      }
+    | {
+        /**
+         * The L2 block number of the withdrawal.
+         */
+        l2BlockNumber: bigint
+        /**
+         * The sender of the withdrawal.
+         */
+        sender: Address
+        /**
+         * The hash of the withdrawal.
+         */
+        withdrawalHash: Hash
+      }
+  >
+export type GetWithdrawalStatusReturnType =
+  | 'waiting-to-prove'
+  | 'ready-to-prove'
+  | 'waiting-to-finalize'
+  | 'ready-to-finalize'
+  | 'finalized'
+
+export type GetWithdrawalStatusErrorType =
+  | GetL2OutputErrorType
+  | GetTimeToFinalizeErrorType
+  | GetWithdrawalsErrorType
+  | ReadContractErrorType
+  | ReceiptContainsNoWithdrawalsErrorType
+  | ErrorType
+
+/**
+ * Returns the current status of a withdrawal. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/getWithdrawalStatus
+ *
+ * @param client - Client to use
+ * @param parameters - {@link GetWithdrawalStatusParameters}
+ * @returns Status of the withdrawal. {@link GetWithdrawalStatusReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { getWithdrawalStatus } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const receipt = await publicClientL2.getTransactionReceipt({ hash: '0x...' })
+ * const status = await getWithdrawalStatus(publicClientL1, {
+ *   receipt,
+ *   targetChain: optimism
+ * })
+ */
+export async function getWithdrawalStatus<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: GetWithdrawalStatusParameters<chain, chainOverride>,
+): Promise<GetWithdrawalStatusReturnType> {
+  const {
+    chain = client.chain,
+    gameLimit = 100,
+    receipt,
+    targetChain: targetChain_,
+    logIndex = 0,
+  } = parameters
+
+  const targetChain = targetChain_ as unknown as TargetChain
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain.contracts.portal[chain.id].address
+    return Object.values(targetChain.contracts.portal)[0].address
+  })()
+
+  const l2BlockNumber = receipt?.blockNumber ?? parameters.l2BlockNumber
+
+  const withdrawal = (() => {
+    if (receipt) {
+      const withdrawal = getWithdrawals({ logs: receipt.logs })[logIndex]
+      if (!withdrawal)
+        throw new ReceiptContainsNoWithdrawalsError({
+          hash: receipt.transactionHash,
+        })
+      return withdrawal
+    }
+    return {
+      sender: parameters.sender,
+      withdrawalHash: parameters.withdrawalHash,
+    }
+  })()
+
+  const portalVersion = await getPortalVersion(
+    client,
+    parameters as GetPortalVersionParameters,
+  )
+
+  // Legacy (Portal < v3)
+  if (portalVersion.major < 3) {
+    const [outputResult, proveResult, finalizedResult, timeToFinalizeResult] =
+      await Promise.allSettled([
+        getL2Output(client, {
+          ...parameters,
+          l2BlockNumber,
+        } as GetL2OutputParameters),
+        readContract(client, {
+          abi: portalAbi,
+          address: portalAddress,
+          functionName: 'provenWithdrawals',
+          args: [withdrawal.withdrawalHash],
+        }),
+        readContract(client, {
+          abi: portalAbi,
+          address: portalAddress,
+          functionName: 'finalizedWithdrawals',
+          args: [withdrawal.withdrawalHash],
+        }),
+        getTimeToFinalize(client, {
+          ...parameters,
+          withdrawalHash: withdrawal.withdrawalHash,
+        } as GetTimeToFinalizeParameters),
+      ])
+
+    // If the L2 Output is not processed yet (ie. the actions throws), this means
+    // that the withdrawal is not ready to prove.
+    if (outputResult.status === 'rejected') {
+      const error = outputResult.reason as GetL2OutputErrorType
+      if (
+        error.cause instanceof ContractFunctionRevertedError &&
+        error.cause.data?.args?.[0] ===
+          'L2OutputOracle: cannot get output for a block that has not been proposed'
+      )
+        return 'waiting-to-prove'
+      throw error
+    }
+    if (proveResult.status === 'rejected') throw proveResult.reason
+    if (finalizedResult.status === 'rejected') throw finalizedResult.reason
+    if (timeToFinalizeResult.status === 'rejected')
+      throw timeToFinalizeResult.reason
+
+    const [_, proveTimestamp] = proveResult.value
+    if (!proveTimestamp) return 'ready-to-prove'
+
+    const finalized = finalizedResult.value
+    if (finalized) return 'finalized'
+
+    const { seconds } = timeToFinalizeResult.value
+    return seconds > 0 ? 'waiting-to-finalize' : 'ready-to-finalize'
+  }
+
+  const numProofSubmitters = await readContract(client, {
+    abi: portal2Abi,
+    address: portalAddress,
+    functionName: 'numProofSubmitters',
+    args: [withdrawal.withdrawalHash],
+  }).catch(() => 1n)
+
+  const proofSubmitter = await readContract(client, {
+    abi: portal2Abi,
+    address: portalAddress,
+    functionName: 'proofSubmitters',
+    args: [withdrawal.withdrawalHash, numProofSubmitters - 1n],
+  }).catch(() => withdrawal.sender)
+
+  const [
+    disputeGameResult,
+    provenWithdrawalsResult,
+    checkWithdrawalResult,
+    finalizedResult,
+  ] = await Promise.allSettled([
+    getGame(client, {
+      ...parameters,
+      l2BlockNumber,
+      limit: gameLimit,
+    } as GetGameParameters),
+    readContract(client, {
+      abi: portal2Abi,
+      address: portalAddress,
+      functionName: 'provenWithdrawals',
+      args: [withdrawal.withdrawalHash, proofSubmitter],
+    }),
+    readContract(client, {
+      abi: portal2Abi,
+      address: portalAddress,
+      functionName: 'checkWithdrawal',
+      args: [withdrawal.withdrawalHash, proofSubmitter],
+    }),
+    readContract(client, {
+      abi: portal2Abi,
+      address: portalAddress,
+      functionName: 'finalizedWithdrawals',
+      args: [withdrawal.withdrawalHash],
+    }),
+  ])
+
+  if (finalizedResult.status === 'fulfilled' && finalizedResult.value)
+    return 'finalized'
+
+  if (provenWithdrawalsResult.status === 'rejected')
+    throw provenWithdrawalsResult.reason
+
+  if (disputeGameResult.status === 'rejected') {
+    const error = disputeGameResult.reason as GetGameErrorType
+    if (error.name === 'GameNotFoundError') return 'waiting-to-prove'
+    throw disputeGameResult.reason
+  }
+
+  if (checkWithdrawalResult.status === 'rejected') {
+    const error = checkWithdrawalResult.reason as ReadContractErrorType
+    if (error.cause instanceof ContractFunctionRevertedError) {
+      // All potential error causes listed here, can either be the error string or the error name
+      // if custom error types are returned.
+      const errorCauses = {
+        'ready-to-prove': [
+          'OptimismPortal: invalid game type',
+          'OptimismPortal: withdrawal has not been proven yet',
+          'OptimismPortal: withdrawal has not been proven by proof submitter address yet',
+          'OptimismPortal: dispute game created before respected game type was updated',
+          'InvalidGameType',
+          'LegacyGame',
+          'Unproven',
+          // After U16
+          'OptimismPortal_Unproven',
+          'OptimismPortal_InvalidProofTimestamp',
+        ],
+        'waiting-to-finalize': [
+          'OptimismPortal: proven withdrawal has not matured yet',
+          'OptimismPortal: output proposal has not been finalized yet',
+          'OptimismPortal: output proposal in air-gap',
+        ],
+      }
+
+      // Pick out the error message and/or error name
+      // Return the status based on the error
+      const errors = [
+        error.cause.data?.errorName,
+        error.cause.data?.args?.[0] as string,
+      ]
+
+      // After U16 we get a generic error message (OptimismPortal_InvalidRootClaim) because the
+      // OptimismPortal will call AnchorStateRegistry.isGameClaimValid which simply returns
+      // true/false. If we get this generic error, we need to figure out why the function returned
+      // false and return a proper status accordingly. We can also check these conditions when we
+      // get ProofNotOldEnough so users can be notified when their pending proof becomes invalid
+      // before it can be finalized.
+      if (
+        errors.includes('OptimismPortal_InvalidRootClaim') ||
+        errors.includes('OptimismPortal_ProofNotOldEnough')
+      ) {
+        // Get the dispute game address from the proven withdrawal.
+        const disputeGameAddress = provenWithdrawalsResult.value[0] as Address
+
+        // Get the AnchorStateRegistry address from the portal.
+        const anchorStateRegistry = await readContract(client, {
+          abi: portal2Abi,
+          address: portalAddress,
+          functionName: 'anchorStateRegistry',
+        })
+
+        // Check if the game is proper, respected, and finalized.
+        const [
+          isGameProperResult,
+          isGameRespectedResult,
+          isGameFinalizedResult,
+        ] = await Promise.allSettled([
+          readContract(client, {
+            abi: anchorStateRegistryAbi,
+            address: anchorStateRegistry,
+            functionName: 'isGameProper',
+            args: [disputeGameAddress],
+          }),
+          readContract(client, {
+            abi: anchorStateRegistryAbi,
+            address: anchorStateRegistry,
+            functionName: 'isGameRespected',
+            args: [disputeGameAddress],
+          }),
+          readContract(client, {
+            abi: anchorStateRegistryAbi,
+            address: anchorStateRegistry,
+            functionName: 'isGameFinalized',
+            args: [disputeGameAddress],
+          }),
+        ])
+
+        // If any of the calls failed, throw the error.
+        if (isGameProperResult.status === 'rejected')
+          throw isGameProperResult.reason
+        if (isGameRespectedResult.status === 'rejected')
+          throw isGameRespectedResult.reason
+        if (isGameFinalizedResult.status === 'rejected')
+          throw isGameFinalizedResult.reason
+
+        // If the game isn't proper, the user needs to re-prove.
+        if (!isGameProperResult.value) {
+          return 'ready-to-prove'
+        }
+
+        // If the game isn't respected, the user needs to re-prove.
+        if (!isGameRespectedResult.value) {
+          return 'ready-to-prove'
+        }
+
+        // If the game isn't finalized, the user needs to wait to finalize.
+        if (!isGameFinalizedResult.value) {
+          return 'waiting-to-finalize'
+        }
+
+        // If the actual error was ProofNotOldEnough, then at this point the game is probably
+        // completely fine but the proof hasn't passed the waiting period. Otherwise, the only
+        // reason we'd be here is if the game resolved in favor of the challenger, which means the
+        // user needs to re-prove the withdrawal.
+        if (errors.includes('OptimismPortal_ProofNotOldEnough')) {
+          return 'waiting-to-finalize'
+        }
+        return 'ready-to-prove'
+      }
+      if (errorCauses['ready-to-prove'].some((cause) => errors.includes(cause)))
+        return 'ready-to-prove'
+      if (
+        errorCauses['waiting-to-finalize'].some((cause) =>
+          errors.includes(cause),
+        )
+      )
+        return 'waiting-to-finalize'
+    }
+    throw checkWithdrawalResult.reason
+  }
+  if (finalizedResult.status === 'rejected') throw finalizedResult.reason
+
+  return 'ready-to-finalize'
+}

node_modules/viem/op-stack/actions/initiateWithdrawal.ts

@@ -0,0 +1,141 @@
+import type { Address } from 'abitype'
+import {
+  type WriteContractErrorType,
+  type WriteContractParameters,
+  writeContract,
+} from '../../actions/wallet/writeContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash } from '../../types/misc.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { l2ToL1MessagePasserAbi } from '../abis.js'
+import { contracts } from '../contracts.js'
+import type { WithdrawalRequest } from '../types/withdrawal.js'
+import type { EstimateInitiateWithdrawalGasErrorType } from './estimateInitiateWithdrawalGas.js'
+
+export type InitiateWithdrawalParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> & {
+    /**
+     * Gas limit for transaction execution on the L2.
+     * `null` to skip gas estimation & defer calculation to signer.
+     */
+    gas?: bigint | null
+    /** Withdrawal request. Supplied to the L2ToL1MessagePasser `initiateWithdrawal` method. */
+    request: WithdrawalRequest
+  }
+export type InitiateWithdrawalReturnType = Hash
+export type InitiateWithdrawalErrorType =
+  | EstimateInitiateWithdrawalGasErrorType
+  | WriteContractErrorType
+  | ErrorType
+
+/**
+ * Initiates a [withdrawal](https://community.optimism.io/docs/protocol/withdrawal-flow/#withdrawal-initiating-transaction) on an L2 to the L1.
+ *
+ * Internally performs a contract write to the [`initiateWithdrawal` function](https://github.com/ethereum-optimism/optimism/blob/283f0aa2e3358ced30ff7cbd4028c0c0c3faa140/packages/contracts-bedrock/src/L2/L2ToL1MessagePasser.sol#L73)
+ * on the [Optimism L2ToL1MessagePasser predeploy contract](https://github.com/ethereum-optimism/optimism/blob/283f0aa2e3358ced30ff7cbd4028c0c0c3faa140/packages/contracts-bedrock/src/L2/L2ToL1MessagePasser.sol).
+ *
+ * - Docs: https://viem.sh/op-stack/actions/initiateWithdrawal
+ *
+ * @param client - Client to use
+ * @param parameters - {@link InitiateWithdrawalParameters}
+ * @returns The L2 transaction hash. {@link InitiateWithdrawalReturnType}
+ *
+ * @example
+ * import { createWalletClient, custom, parseEther } from 'viem'
+ * import { base, mainnet } from 'viem/chains'
+ * import { initiateWithdrawal } from 'viem/op-stack'
+ *
+ * const client = createWalletClient({
+ *   chain: mainnet,
+ *   transport: custom(window.ethereum),
+ * })
+ *
+ * const hash = await initiateWithdrawal(client, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   args: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ * })
+ *
+ * @example
+ * // Account Hoisting
+ * import { createWalletClient, http } from 'viem'
+ * import { privateKeyToAccount } from 'viem/accounts'
+ * import { base, mainnet } from 'viem/chains'
+ * import { initiateWithdrawal } from 'viem/op-stack'
+ *
+ * const client = createWalletClient({
+ *   account: privateKeyToAccount('0x…'),
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const hash = await initiateWithdrawal(client, {
+ *   request: {
+ *     gas: 21_000n,
+ *     to: '0x70997970c51812dc3a010c7d01b50e0d17dc79c8',
+ *     value: parseEther('1'),
+ *   },
+ * })
+ */
+export async function initiateWithdrawal<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: InitiateWithdrawalParameters<chain, account, chainOverride>,
+) {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    request: { data = '0x', gas: l1Gas, to, value },
+  } = parameters
+
+  return writeContract(client, {
+    account: account!,
+    abi: l2ToL1MessagePasserAbi,
+    address: contracts.l2ToL1MessagePasser.address,
+    chain,
+    functionName: 'initiateWithdrawal',
+    args: [to, l1Gas, data],
+    gas: gas ?? undefined,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    value,
+  } satisfies WriteContractParameters as any)
+}

node_modules/viem/op-stack/actions/proveWithdrawal.ts

@@ -0,0 +1,142 @@
+import type { Address } from 'abitype'
+import {
+  type WriteContractErrorType,
+  type WriteContractParameters,
+  writeContract,
+} from '../../actions/wallet/writeContract.js'
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account, GetAccountParameter } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { Hash, Hex } from '../../types/misc.js'
+import type { UnionEvaluate, UnionOmit } from '../../types/utils.js'
+import type { FormattedTransactionRequest } from '../../utils/formatters/transactionRequest.js'
+import { portal2Abi } from '../abis.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { EstimateProveWithdrawalGasErrorType } from './estimateProveWithdrawalGas.js'
+
+export type ProveWithdrawalParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  account extends Account | undefined = Account | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = UnionEvaluate<
+  UnionOmit<
+    FormattedTransactionRequest<_derivedChain>,
+    | 'accessList'
+    | 'blobs'
+    | 'data'
+    | 'from'
+    | 'gas'
+    | 'maxFeePerBlobGas'
+    | 'gasPrice'
+    | 'to'
+    | 'type'
+    | 'value'
+  >
+> &
+  GetAccountParameter<account, Account | Address> &
+  GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'portal'> & {
+    /**
+     * Gas limit for transaction execution on the L1.
+     * `null` to skip gas estimation & defer calculation to signer.
+     */
+    gas?: bigint | null | undefined
+    l2OutputIndex: bigint
+    outputRootProof: {
+      version: Hex
+      stateRoot: Hex
+      messagePasserStorageRoot: Hex
+      latestBlockhash: Hex
+    }
+    withdrawalProof: readonly Hex[]
+    withdrawal: {
+      data: Hex
+      gasLimit: bigint
+      nonce: bigint
+      sender: Address
+      target: Address
+      value: bigint
+    }
+  }
+export type ProveWithdrawalReturnType = Hash
+export type ProveWithdrawalErrorType =
+  | EstimateProveWithdrawalGasErrorType
+  | WriteContractErrorType
+  | ErrorType
+
+/**
+ * Proves a withdrawal that occurred on an L2. Used in the Withdrawal flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/proveWithdrawal
+ *
+ * @param client - Client to use
+ * @param parameters - {@link ProveWithdrawalParameters}
+ * @returns The prove transaction hash. {@link ProveWithdrawalReturnType}
+ *
+ * @example
+ * import { createWalletClient, http } from 'viem'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { proveWithdrawal } from 'viem/op-stack'
+ *
+ * const walletClientL1 = createWalletClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ *
+ * const request = await proveWithdrawal(walletClientL1, {
+ *   account: '0xA0Cf798816D4b9b9866b5330EEa46a18382f251e',
+ *   l2OutputIndex: 4529n,
+ *   outputRootProof: { ... },
+ *   targetChain: optimism,
+ *   withdrawalProof: [ ... ],
+ *   withdrawal: { ... },
+ * })
+ */
+export async function proveWithdrawal<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: ProveWithdrawalParameters<chain, account, chainOverride>,
+): Promise<ProveWithdrawalReturnType> {
+  const {
+    account,
+    chain = client.chain,
+    gas,
+    l2OutputIndex,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+    outputRootProof,
+    targetChain,
+    withdrawalProof,
+    withdrawal,
+  } = parameters
+
+  const portalAddress = (() => {
+    if (parameters.portalAddress) return parameters.portalAddress
+    if (chain) return targetChain!.contracts.portal[chain.id].address
+    return Object.values(targetChain!.contracts.portal)[0].address
+  })()
+
+  return writeContract(client, {
+    account: account!,
+    abi: portal2Abi,
+    address: portalAddress,
+    chain,
+    functionName: 'proveWithdrawalTransaction',
+    args: [withdrawal, l2OutputIndex, outputRootProof, withdrawalProof],
+    gas: gas ?? undefined,
+    maxFeePerGas,
+    maxPriorityFeePerGas,
+    nonce,
+  } satisfies WriteContractParameters as any)
+}

node_modules/viem/op-stack/actions/waitForNextGame.ts

@@ -0,0 +1,122 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import { poll } from '../../utils/poll.js'
+import { GameNotFoundError } from '../errors/withdrawal.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import {
+  type GetGameErrorType,
+  type GetGameReturnType,
+  getGame,
+} from './getGame.js'
+import {
+  type GetTimeToNextGameErrorType,
+  type GetTimeToNextGameParameters,
+  getTimeToNextGame,
+} from './getTimeToNextGame.js'
+
+export type WaitForNextGameParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<
+    _derivedChain,
+    'portal' | 'disputeGameFactory'
+  > & {
+    /**
+     * Limit of games to extract.
+     * @default 100
+     */
+    limit?: number | undefined
+    /**
+     * The buffer to account for discrepancies between non-deterministic time intervals.
+     * @default 1.1
+     */
+    intervalBuffer?: GetTimeToNextGameParameters['intervalBuffer'] | undefined
+    l2BlockNumber: bigint
+    /**
+     * Polling frequency (in ms). Defaults to Client's pollingInterval config.
+     * @default client.pollingInterval
+     */
+    pollingInterval?: number | undefined
+  }
+export type WaitForNextGameReturnType = GetGameReturnType
+export type WaitForNextGameErrorType =
+  | GetGameErrorType
+  | GetTimeToNextGameErrorType
+  | ErrorType
+
+/**
+ * Waits for the next dispute game (after the provided block number) to be submitted.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/waitForNextGame
+ *
+ * @param client - Client to use
+ * @param parameters - {@link WaitForNextGameParameters}
+ * @returns The L2 transaction hash. {@link WaitForNextGameReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { waitForNextGame } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const l2BlockNumber = await getBlockNumber(publicClientL2)
+ * await waitForNextGame(publicClientL1, {
+ *   l2BlockNumber,
+ *   targetChain: optimism
+ * })
+ */
+export async function waitForNextGame<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: WaitForNextGameParameters<chain, chainOverride>,
+): Promise<WaitForNextGameReturnType> {
+  const { pollingInterval = client.pollingInterval } = parameters
+
+  const { seconds } = await getTimeToNextGame(client, parameters)
+
+  return new Promise((resolve, reject) => {
+    poll(
+      async ({ unpoll }) => {
+        try {
+          const game = await getGame(client, {
+            ...parameters,
+            strategy: 'random',
+          })
+          unpoll()
+          resolve(game)
+        } catch (e) {
+          const error = e as GetGameErrorType
+          if (!(error instanceof GameNotFoundError)) {
+            unpoll()
+            reject(e)
+          }
+        }
+      },
+      {
+        interval: pollingInterval,
+        initialWaitTime: async () => seconds * 1000,
+      },
+    )
+  })
+}

node_modules/viem/op-stack/actions/waitForNextL2Output.ts

@@ -0,0 +1,117 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import { ContractFunctionRevertedError } from '../../errors/contract.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import { poll } from '../../utils/poll.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import {
+  type GetL2OutputErrorType,
+  type GetL2OutputParameters,
+  type GetL2OutputReturnType,
+  getL2Output,
+} from './getL2Output.js'
+import {
+  type GetTimeToNextL2OutputErrorType,
+  type GetTimeToNextL2OutputParameters,
+  getTimeToNextL2Output,
+} from './getTimeToNextL2Output.js'
+
+export type WaitForNextL2OutputParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  GetContractAddressParameter<_derivedChain, 'l2OutputOracle'> & {
+    /**
+     * The buffer to account for discrepancies between non-deterministic time intervals.
+     * @default 1.1
+     */
+    intervalBuffer?:
+      | GetTimeToNextL2OutputParameters['intervalBuffer']
+      | undefined
+    l2BlockNumber: bigint
+    /**
+     * Polling frequency (in ms). Defaults to Client's pollingInterval config.
+     * @default client.pollingInterval
+     */
+    pollingInterval?: number | undefined
+  }
+export type WaitForNextL2OutputReturnType = GetL2OutputReturnType
+export type WaitForNextL2OutputErrorType =
+  | GetL2OutputErrorType
+  | GetTimeToNextL2OutputErrorType
+  | ErrorType
+
+/**
+ * Waits for the next L2 output (after the provided block number) to be submitted.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/waitForNextL2Output
+ *
+ * @param client - Client to use
+ * @param parameters - {@link WaitForNextL2OutputParameters}
+ * @returns The L2 transaction hash. {@link WaitForNextL2OutputReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { waitForNextL2Output } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const l2BlockNumber = await getBlockNumber(publicClientL2)
+ * await waitForNextL2Output(publicClientL1, {
+ *   l2BlockNumber,
+ *   targetChain: optimism
+ * })
+ */
+export async function waitForNextL2Output<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: WaitForNextL2OutputParameters<chain, chainOverride>,
+): Promise<WaitForNextL2OutputReturnType> {
+  const { pollingInterval = client.pollingInterval } = parameters
+
+  const { seconds } = await getTimeToNextL2Output(client, parameters)
+
+  return new Promise((resolve, reject) => {
+    poll(
+      async ({ unpoll }) => {
+        try {
+          const output = await getL2Output(
+            client,
+            parameters as GetL2OutputParameters,
+          )
+          unpoll()
+          resolve(output)
+        } catch (e) {
+          const error = e as GetL2OutputErrorType
+          if (!(error.cause instanceof ContractFunctionRevertedError)) {
+            unpoll()
+            reject(e)
+          }
+        }
+      },
+      {
+        interval: pollingInterval,
+        initialWaitTime: async () => seconds * 1000,
+      },
+    )
+  })
+}

node_modules/viem/op-stack/actions/waitToFinalize.ts

@@ -0,0 +1,64 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type { Chain } from '../../types/chain.js'
+import { wait } from '../../utils/wait.js'
+import {
+  type GetTimeToFinalizeErrorType,
+  type GetTimeToFinalizeParameters,
+  getTimeToFinalize,
+} from './getTimeToFinalize.js'
+
+export type WaitToFinalizeParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+> = GetTimeToFinalizeParameters<chain, chainOverride>
+export type WaitToFinalizeReturnType = void
+export type WaitToFinalizeErrorType = GetTimeToFinalizeErrorType | ErrorType
+
+/**
+ * Waits until the withdrawal transaction can be finalized. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/waitToFinalize
+ *
+ * @param client - Client to use
+ * @param parameters - {@link WaitToFinalizeParameters}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { waitToFinalize } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const receipt = await publicClientL2.getTransactionReceipt({
+ *   hash: '0x9a2f4283636ddeb9ac32382961b22c177c9e86dd3b283735c154f897b1a7ff4a',
+ * })
+ *
+ * const [withdrawal] = getWithdrawals(receipt)
+ *
+ * await waitToFinalize(publicClientL1, {
+ *   withdrawalHash: withdrawal.withdrawalHash,
+ *   targetChain: optimism
+ * })
+ */
+export async function waitToFinalize<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: WaitToFinalizeParameters<chain, chainOverride>,
+): Promise<WaitToFinalizeReturnType> {
+  const { seconds } = await getTimeToFinalize(client, parameters)
+  await wait(seconds * 1000)
+}

node_modules/viem/op-stack/actions/waitToProve.ts

@@ -0,0 +1,157 @@
+import type { Client } from '../../clients/createClient.js'
+import type { Transport } from '../../clients/transports/createTransport.js'
+import type { ErrorType } from '../../errors/utils.js'
+import type { Account } from '../../types/account.js'
+import type {
+  Chain,
+  DeriveChain,
+  GetChainParameter,
+} from '../../types/chain.js'
+import type { TransactionReceipt } from '../../types/transaction.js'
+import type { OneOf } from '../../types/utils.js'
+import { ReceiptContainsNoWithdrawalsError } from '../errors/withdrawal.js'
+import type { GetContractAddressParameter } from '../types/contract.js'
+import type { Withdrawal } from '../types/withdrawal.js'
+import {
+  type GetWithdrawalsErrorType,
+  getWithdrawals,
+} from '../utils/getWithdrawals.js'
+import {
+  type GetPortalVersionParameters,
+  getPortalVersion,
+} from './getPortalVersion.js'
+import {
+  type WaitForNextGameParameters,
+  type WaitForNextGameReturnType,
+  waitForNextGame,
+} from './waitForNextGame.js'
+import {
+  type WaitForNextL2OutputErrorType,
+  type WaitForNextL2OutputParameters,
+  type WaitForNextL2OutputReturnType,
+  waitForNextL2Output,
+} from './waitForNextL2Output.js'
+
+export type WaitToProveParameters<
+  chain extends Chain | undefined = Chain | undefined,
+  chainOverride extends Chain | undefined = Chain | undefined,
+  _derivedChain extends Chain | undefined = DeriveChain<chain, chainOverride>,
+> = GetChainParameter<chain, chainOverride> &
+  OneOf<
+    | GetContractAddressParameter<_derivedChain, 'l2OutputOracle'>
+    | GetContractAddressParameter<
+        _derivedChain,
+        'disputeGameFactory' | 'portal'
+      >
+  > & {
+    /**
+     * Limit of games to extract.
+     * @default 100
+     */
+    gameLimit?: number | undefined
+    receipt: TransactionReceipt
+    /**
+     * Polling frequency (in ms). Defaults to Client's pollingInterval config.
+     * @default client.pollingInterval
+     */
+    pollingInterval?: number | undefined
+  }
+export type WaitToProveReturnType = {
+  game: WaitForNextGameReturnType
+  output: WaitForNextL2OutputReturnType
+  withdrawal: Withdrawal
+}
+
+export type WaitToProveErrorType =
+  | GetWithdrawalsErrorType
+  | WaitForNextL2OutputErrorType
+  | ErrorType
+
+/**
+ * Waits until the L2 withdrawal transaction is ready to be proved. Used for the [Withdrawal](/op-stack/guides/withdrawals) flow.
+ *
+ * - Docs: https://viem.sh/op-stack/actions/waitToProve
+ *
+ * @param client - Client to use
+ * @param parameters - {@link WaitToProveParameters}
+ * @returns The L2 output and withdrawal message. {@link WaitToProveReturnType}
+ *
+ * @example
+ * import { createPublicClient, http } from 'viem'
+ * import { getBlockNumber } from 'viem/actions'
+ * import { mainnet, optimism } from 'viem/chains'
+ * import { waitToProve } from 'viem/op-stack'
+ *
+ * const publicClientL1 = createPublicClient({
+ *   chain: mainnet,
+ *   transport: http(),
+ * })
+ * const publicClientL2 = createPublicClient({
+ *   chain: optimism,
+ *   transport: http(),
+ * })
+ *
+ * const receipt = await publicClientL2.getTransactionReceipt({ hash: '0x...' })
+ * await waitToProve(publicClientL1, {
+ *   receipt,
+ *   targetChain: optimism
+ * })
+ */
+export async function waitToProve<
+  chain extends Chain | undefined,
+  account extends Account | undefined,
+  chainOverride extends Chain | undefined = undefined,
+>(
+  client: Client<Transport, chain, account>,
+  parameters: WaitToProveParameters<chain, chainOverride>,
+): Promise<WaitToProveReturnType> {
+  const { gameLimit, receipt } = parameters
+
+  const [withdrawal] = getWithdrawals(receipt)
+
+  if (!withdrawal)
+    throw new ReceiptContainsNoWithdrawalsError({
+      hash: receipt.transactionHash,
+    })
+
+  const portalVersion = await getPortalVersion(
+    client,
+    parameters as GetPortalVersionParameters,
+  )
+
+  // Legacy (Portal < v3)
+  if (portalVersion.major < 3) {
+    const output = await waitForNextL2Output(client, {
+      ...parameters,
+      l2BlockNumber: receipt.blockNumber,
+    } as WaitForNextL2OutputParameters)
+    return {
+      game: {
+        extraData: '0x',
+        index: output.outputIndex,
+        l2BlockNumber: output.l2BlockNumber,
+        metadata: '0x',
+        rootClaim: output.outputRoot,
+        timestamp: output.timestamp,
+      },
+      output,
+      withdrawal,
+    }
+  }
+
+  const game = await waitForNextGame(client, {
+    ...parameters,
+    limit: gameLimit,
+    l2BlockNumber: receipt.blockNumber,
+  } as WaitForNextGameParameters)
+  return {
+    game,
+    output: {
+      l2BlockNumber: game.l2BlockNumber,
+      outputIndex: game.index,
+      outputRoot: game.rootClaim,
+      timestamp: game.timestamp,
+    },
+    withdrawal,
+  }
+}