feat: opt-in skip validation

package.json

@@ -1,6 +1,6 @@
 {
  "name": "@arbitrum/sdk",
- "version": "3.1.2",
+ "version": "3.1.3-beta.0",
  "description": "Typescript library client-side interactions with Arbitrum",
  "author": "Offchain Labs, Inc.",
  "license": "Apache-2.0",

src/lib/assetBridger/erc20Bridger.ts

@@ -434,19 +434,31 @@ export class Erc20Bridger extends AssetBridger<
  public async getL1ERC20Address(
  erc20L2Address: string,
  l2Provider: Provider
+ ): Promise<string> {
+ return this.getL1ERC20AddressFromGateway(
+ erc20L2Address,
+ l2Provider,
+ this.l2Network.tokenBridge.l2GatewayRouter
+ )
+ }
+
+ public async getL1ERC20AddressFromGateway(
+ erc20L2Address: string,
+ l2Provider: Provider,
+ l2GatewayAddress: string
  ): Promise<string> {
  await this.checkL2Network(l2Provider)
 
  const arbERC20 = L2GatewayToken__factory.connect(erc20L2Address, l2Provider)
  const l1Address = await arbERC20.functions.l1Address().then(([res]) => res)
 
  // check that this l1 address is indeed registered to this l2 token
- const l2GatewayRouter = L2GatewayRouter__factory.connect(
- this.l2Network.tokenBridge.l2GatewayRouter,
+ const l2Gateway = L2ArbitrumGateway__factory.connect(
+ l2GatewayAddress,
  l2Provider
  )
 
- const l2Address = await l2GatewayRouter.calculateL2TokenAddress(l1Address)
+ const l2Address = await l2Gateway.calculateL2TokenAddress(l1Address)
  if (l2Address.toLowerCase() !== erc20L2Address.toLowerCase()) {
  throw new ArbSdkError(
  `Unexpected l1 address. L1 address from token is not registered to the provided l2 address. ${l1Address} ${l2Address} ${erc20L2Address}`
@@ -686,7 +698,8 @@ export class Erc20Bridger extends AssetBridger<
  public async withdraw(
  params:
  | (OmitTyped<Erc20WithdrawParams, 'from'> & { l2Signer: Signer })
- | L2ToL1TxReqAndSigner
+ | L2ToL1TxReqAndSigner,
+ forceUseGateway?: string
  ): Promise<L2ContractTransaction> {
  if (!SignerProviderUtils.signerHasProvider(params.l2Signer)) {
  throw new MissingProviderArbSdkError('l2Signer')
@@ -701,6 +714,7 @@ export class Erc20Bridger extends AssetBridger<
  ...params,
  from: await params.l2Signer.getAddress(),
  })
+ if (forceUseGateway) withdrawalRequest.txRequest.to = forceUseGateway
 
  const tx = await params.l2Signer.sendTransaction({
  ...withdrawalRequest.txRequest,