Improve robustness of revert reason assertions

21 files changed, 269 insertions, 221 deletions

diff --git a/packages/contracts/test/asset_proxy/authorizable.ts b/packages/contracts/test/asset_proxy/authorizable.ts
index 5a0586c28..e99c6cee3 100644
--- a/packages/contracts/test/asset_proxy/authorizable.ts
+++ b/packages/contracts/test/asset_proxy/authorizable.ts
@@ -5,7 +5,7 @@ import * as chai from 'chai';
 
 import { MixinAuthorizableContract } from '../../generated_contract_wrappers/mixin_authorizable';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper';
@@ -44,7 +44,7 @@ describe('Authorizable', () => {
     });
     describe('addAuthorizedAddress', () => {
         it('should throw if not called by owner', async () => {
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.addAuthorizedAddress.sendTransactionAsync(notOwner, { from: notOwner }),
                 RevertReason.OnlyContractOwner,
             );
@@ -62,7 +62,7 @@ describe('Authorizable', () => {
                 await authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
                 RevertReason.TargetAlreadyAuthorized,
             );
@@ -75,7 +75,7 @@ describe('Authorizable', () => {
                 await authorizable.addAuthorizedAddress.sendTransactionAsync(address, { from: owner }),
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddress.sendTransactionAsync(address, {
                     from: notOwner,
                 }),
@@ -99,7 +99,7 @@ describe('Authorizable', () => {
         });
 
         it('should throw if owner attempts to remove an address that is not authorized', async () => {
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddress.sendTransactionAsync(address, {
                     from: owner,
                 }),
@@ -115,7 +115,7 @@ describe('Authorizable', () => {
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
             const index = new BigNumber(0);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
                     from: notOwner,
                 }),
@@ -128,7 +128,7 @@ describe('Authorizable', () => {
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
             const index = new BigNumber(1);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
                     from: owner,
                 }),
@@ -137,7 +137,7 @@ describe('Authorizable', () => {
         });
         it('should throw if owner attempts to remove an address that is not authorized', async () => {
             const index = new BigNumber(0);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address, index, {
                     from: owner,
                 }),
@@ -156,7 +156,7 @@ describe('Authorizable', () => {
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
             const address1Index = new BigNumber(0);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 authorizable.removeAuthorizedAddressAtIndex.sendTransactionAsync(address2, address1Index, {
                     from: owner,
                 }),
diff --git a/packages/contracts/test/asset_proxy/proxies.ts b/packages/contracts/test/asset_proxy/proxies.ts
index fc1e53352..bf9f9bc3e 100644
--- a/packages/contracts/test/asset_proxy/proxies.ts
+++ b/packages/contracts/test/asset_proxy/proxies.ts
@@ -17,7 +17,7 @@ import { ERC20ProxyContract } from '../../generated_contract_wrappers/e_r_c20_pr
 import { ERC721ProxyContract } from '../../generated_contract_wrappers/e_r_c721_proxy';
 import { IAssetProxyContract } from '../../generated_contract_wrappers/i_asset_proxy';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -184,7 +184,7 @@ describe('Asset Transfer Proxies', () => {
                     constants.AWAIT_TRANSACTION_MINED_MS,
                 );
                 // Perform a transfer; expect this to fail.
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                await expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc20Proxy.address,
                         data,
@@ -205,7 +205,7 @@ describe('Asset Transfer Proxies', () => {
                     takerAddress,
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                await expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc20Proxy.address,
                         data,
@@ -344,7 +344,7 @@ describe('Asset Transfer Proxies', () => {
                     erc20Proxy.address, // the ERC20 proxy does not have an ERC721 receiver
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
                         data,
@@ -369,7 +369,7 @@ describe('Asset Transfer Proxies', () => {
                     takerAddress,
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
                         data,
@@ -393,7 +393,7 @@ describe('Asset Transfer Proxies', () => {
                     takerAddress,
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
                         data,
@@ -421,7 +421,7 @@ describe('Asset Transfer Proxies', () => {
                     takerAddress,
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
                         data,
@@ -442,7 +442,7 @@ describe('Asset Transfer Proxies', () => {
                     takerAddress,
                     amount,
                 );
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     web3Wrapper.sendTransactionAsync({
                         to: erc721Proxy.address,
                         data,
diff --git a/packages/contracts/test/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index db56623f9..4e70893fc 100644
--- a/packages/contracts/test/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -14,7 +14,7 @@ import { ERC20ProxyContract } from '../../generated_contract_wrappers/e_r_c20_pr
 import { ERC721ProxyContract } from '../../generated_contract_wrappers/e_r_c721_proxy';
 import { CancelContractEventArgs, ExchangeContract } from '../../generated_contract_wrappers/exchange';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -144,7 +144,7 @@ describe('Exchange core', () => {
             const invalidSigBuff = Buffer.concat([v, invalidR, invalidS, signatureType]);
             const invalidSigHex = `0x${invalidSigBuff.toString('hex')}`;
             signedOrder.signature = invalidSigHex;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress),
                 RevertReason.InvalidOrderSignature,
             );
@@ -153,7 +153,7 @@ describe('Exchange core', () => {
         it('should throw if no value is filled', async () => {
             signedOrder = orderFactory.newSignedOrder();
             await exchangeWrapper.fillOrderAsync(signedOrder, takerAddress);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -167,7 +167,7 @@ describe('Exchange core', () => {
         });
 
         it('should throw if not sent by maker', async () => {
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrderAsync(signedOrder, takerAddress),
                 RevertReason.InvalidMaker,
             );
@@ -178,7 +178,7 @@ describe('Exchange core', () => {
                 makerAssetAmount: new BigNumber(0),
             });
 
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -189,7 +189,7 @@ describe('Exchange core', () => {
                 takerAssetAmount: new BigNumber(0),
             });
 
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -197,7 +197,7 @@ describe('Exchange core', () => {
 
         it('should be able to cancel a full order', async () => {
             await exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, {
                     takerAssetFillAmount: signedOrder.takerAssetAmount.div(2),
                 }),
@@ -222,7 +222,7 @@ describe('Exchange core', () => {
 
         it('should throw if already cancelled', async () => {
             await exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -232,7 +232,7 @@ describe('Exchange core', () => {
             signedOrder = orderFactory.newSignedOrder({
                 expirationTimeSeconds: new BigNumber(Math.floor((Date.now() - 10000) / 1000)),
             });
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrderAsync(signedOrder, makerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -250,7 +250,7 @@ describe('Exchange core', () => {
             });
 
             const fillTakerAssetAmount2 = new BigNumber(1);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, {
                     takerAssetFillAmount: fillTakerAssetAmount2,
                 }),
@@ -264,7 +264,7 @@ describe('Exchange core', () => {
             const orderEpoch = new BigNumber(1);
             await exchangeWrapper.cancelOrdersUpToAsync(orderEpoch, makerAddress);
             const lesserOrderEpoch = new BigNumber(0);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrdersUpToAsync(lesserOrderEpoch, makerAddress),
                 RevertReason.InvalidNewOrderEpoch,
             );
@@ -273,7 +273,7 @@ describe('Exchange core', () => {
         it('should fail to set orderEpoch equal to existing orderEpoch', async () => {
             const orderEpoch = new BigNumber(1);
             await exchangeWrapper.cancelOrdersUpToAsync(orderEpoch, makerAddress);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.cancelOrdersUpToAsync(orderEpoch, makerAddress),
                 RevertReason.InvalidNewOrderEpoch,
             );
@@ -363,7 +363,7 @@ describe('Exchange core', () => {
             expect(initialOwnerTakerAsset).to.be.bignumber.equal(takerAddress);
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.TransferFailed,
             );
@@ -386,7 +386,7 @@ describe('Exchange core', () => {
             expect(initialOwnerTakerAsset).to.be.bignumber.not.equal(takerAddress);
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.TransferFailed,
             );
@@ -409,7 +409,7 @@ describe('Exchange core', () => {
             expect(initialOwnerTakerAsset).to.be.bignumber.equal(takerAddress);
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.InvalidAmount,
             );
@@ -432,7 +432,7 @@ describe('Exchange core', () => {
             expect(initialOwnerTakerAsset).to.be.bignumber.equal(takerAddress);
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.InvalidAmount,
             );
@@ -449,7 +449,7 @@ describe('Exchange core', () => {
             });
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount.div(2);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.RoundingError,
             );
@@ -475,7 +475,7 @@ describe('Exchange core', () => {
             expect(initialOwnerTakerAsset).to.be.bignumber.equal(takerAddress);
             // Call Exchange
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrderAsync(signedOrder, takerAddress, { takerAssetFillAmount }),
                 RevertReason.LengthGreaterThan131Required,
             );
diff --git a/packages/contracts/test/exchange/dispatcher.ts b/packages/contracts/test/exchange/dispatcher.ts
index afbf958d9..94ada1ef2 100644
--- a/packages/contracts/test/exchange/dispatcher.ts
+++ b/packages/contracts/test/exchange/dispatcher.ts
@@ -14,7 +14,7 @@ import {
     TestAssetProxyDispatcherContract,
 } from '../../generated_contract_wrappers/test_asset_proxy_dispatcher';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -129,7 +129,7 @@ describe('AssetProxyDispatcher', () => {
                 txDefaults,
             );
             // Register new ERC20 Transfer Proxy contract
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(newErc20TransferProxy.address, {
                     from: owner,
                 }),
@@ -138,7 +138,7 @@ describe('AssetProxyDispatcher', () => {
         });
 
         it('should throw if requesting address is not owner', async () => {
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 assetProxyDispatcher.registerAssetProxy.sendTransactionAsync(erc20Proxy.address, { from: notOwner }),
                 RevertReason.OnlyContractOwner,
             );
@@ -210,7 +210,7 @@ describe('AssetProxyDispatcher', () => {
             const encodedAssetData = assetProxyUtils.encodeERC20AssetData(zrxToken.address);
             // Perform a transfer from makerAddress to takerAddress
             const amount = new BigNumber(10);
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 assetProxyDispatcher.publicDispatchTransferFrom.sendTransactionAsync(
                     encodedAssetData,
                     makerAddress,
diff --git a/packages/contracts/test/exchange/match_orders.ts b/packages/contracts/test/exchange/match_orders.ts
index 0d07d156f..90406415f 100644
--- a/packages/contracts/test/exchange/match_orders.ts
+++ b/packages/contracts/test/exchange/match_orders.ts
@@ -12,7 +12,7 @@ import { ERC20ProxyContract } from '../../generated_contract_wrappers/e_r_c20_pr
 import { ERC721ProxyContract } from '../../generated_contract_wrappers/e_r_c721_proxy';
 import { ExchangeContract } from '../../generated_contract_wrappers/exchange';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -602,7 +602,7 @@ describe('matchOrders', () => {
             // Cancel left order
             await exchangeWrapper.cancelOrderAsync(signedOrderLeft, signedOrderLeft.makerAddress);
             // Match orders
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -627,7 +627,7 @@ describe('matchOrders', () => {
             // Cancel right order
             await exchangeWrapper.cancelOrderAsync(signedOrderRight, signedOrderRight.makerAddress);
             // Match orders
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -650,7 +650,7 @@ describe('matchOrders', () => {
                 feeRecipientAddress: feeRecipientAddressRight,
             });
             // Match orders
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress),
                 RevertReason.NegativeSpreadRequired,
             );
@@ -673,7 +673,7 @@ describe('matchOrders', () => {
                 feeRecipientAddress: feeRecipientAddressRight,
             });
             // Match orders
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress),
                 // We are assuming assetData fields of the right order are the
                 // reverse of the left order, rather than checking equality. This
@@ -702,7 +702,7 @@ describe('matchOrders', () => {
                 feeRecipientAddress: feeRecipientAddressRight,
             });
             // Match orders
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.matchOrdersAsync(signedOrderLeft, signedOrderRight, takerAddress),
                 RevertReason.InvalidOrderSignature,
             );
diff --git a/packages/contracts/test/exchange/signature_validator.ts b/packages/contracts/test/exchange/signature_validator.ts
index 1db7dfc6d..c44d22479 100644
--- a/packages/contracts/test/exchange/signature_validator.ts
+++ b/packages/contracts/test/exchange/signature_validator.ts
@@ -13,7 +13,7 @@ import { TestValidatorContract } from '../../generated_contract_wrappers/test_va
 import { TestWalletContract } from '../../generated_contract_wrappers/test_wallet';
 import { addressUtils } from '../utils/address_utils';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertOrOtherErrorAsync } from '../utils/assertions';
+import { expectContractCallFailed } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { LogDecoder } from '../utils/log_decoder';
@@ -101,7 +101,7 @@ describe('MixinSignatureValidator', () => {
         it('should revert when signature is empty', async () => {
             const emptySignature = '0x';
             const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 signatureValidator.publicIsValidSignature.callAsync(
                     orderHashHex,
                     signedOrder.makerAddress,
@@ -115,7 +115,7 @@ describe('MixinSignatureValidator', () => {
             const unsupportedSignatureType = SignatureType.NSignatureTypes;
             const unsupportedSignatureHex = `0x${unsupportedSignatureType}`;
             const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 signatureValidator.publicIsValidSignature.callAsync(
                     orderHashHex,
                     signedOrder.makerAddress,
@@ -128,7 +128,7 @@ describe('MixinSignatureValidator', () => {
         it('should revert when SignatureType=Illegal', async () => {
             const unsupportedSignatureHex = `0x${SignatureType.Illegal}`;
             const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 signatureValidator.publicIsValidSignature.callAsync(
                     orderHashHex,
                     signedOrder.makerAddress,
@@ -155,7 +155,7 @@ describe('MixinSignatureValidator', () => {
             const signatureBuffer = Buffer.concat([fillerData, signatureType]);
             const signatureHex = ethUtil.bufferToHex(signatureBuffer);
             const orderHashHex = orderHashUtils.getOrderHashHex(signedOrder);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 signatureValidator.publicIsValidSignature.callAsync(
                     orderHashHex,
                     signedOrder.makerAddress,
diff --git a/packages/contracts/test/exchange/transactions.ts b/packages/contracts/test/exchange/transactions.ts
index 4f8b49e0e..959d79517 100644
--- a/packages/contracts/test/exchange/transactions.ts
+++ b/packages/contracts/test/exchange/transactions.ts
@@ -11,7 +11,7 @@ import { ExchangeContract } from '../../generated_contract_wrappers/exchange';
 import { ExchangeWrapperContract } from '../../generated_contract_wrappers/exchange_wrapper';
 import { WhitelistContract } from '../../generated_contract_wrappers/whitelist';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -134,7 +134,7 @@ describe('Exchange transactions', () => {
             });
 
             it('should throw if not called by specified sender', async () => {
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.executeTransactionAsync(signedTx, takerAddress),
                     RevertReason.FailedExecution,
                 );
@@ -177,7 +177,7 @@ describe('Exchange transactions', () => {
 
             it('should throw if the a 0x transaction with the same transactionHash has already been executed', async () => {
                 await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.executeTransactionAsync(signedTx, senderAddress),
                     RevertReason.InvalidTxHash,
                 );
@@ -197,7 +197,7 @@ describe('Exchange transactions', () => {
             });
 
             it('should throw if not called by specified sender', async () => {
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.executeTransactionAsync(signedTx, makerAddress),
                     RevertReason.FailedExecution,
                 );
@@ -205,7 +205,7 @@ describe('Exchange transactions', () => {
 
             it('should cancel the order when signed by maker and called by sender', async () => {
                 await exchangeWrapper.executeTransactionAsync(signedTx, senderAddress);
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.fillOrderAsync(signedOrder, senderAddress),
                     RevertReason.OrderUnfillable,
                 );
@@ -250,7 +250,7 @@ describe('Exchange transactions', () => {
                     signedOrder.signature,
                 );
                 const signedFillTx = takerTransactionFactory.newSignedTransaction(fillData);
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapperContract.fillOrder.sendTransactionAsync(
                         orderWithoutExchangeAddress,
                         takerAssetFillAmount,
@@ -370,7 +370,7 @@ describe('Exchange transactions', () => {
             orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder);
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
             const salt = generatePseudoRandomSalt();
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 whitelist.fillOrderIfWhitelisted.sendTransactionAsync(
                     orderWithoutExchangeAddress,
                     takerAssetFillAmount,
@@ -392,7 +392,7 @@ describe('Exchange transactions', () => {
             orderWithoutExchangeAddress = orderUtils.getOrderWithoutExchangeAddress(signedOrder);
             const takerAssetFillAmount = signedOrder.takerAssetAmount;
             const salt = generatePseudoRandomSalt();
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 whitelist.fillOrderIfWhitelisted.sendTransactionAsync(
                     orderWithoutExchangeAddress,
                     takerAssetFillAmount,
diff --git a/packages/contracts/test/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index 7942f7695..69f374e46 100644
--- a/packages/contracts/test/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -12,7 +12,7 @@ import { ERC20ProxyContract } from '../../generated_contract_wrappers/e_r_c20_pr
 import { ERC721ProxyContract } from '../../generated_contract_wrappers/e_r_c721_proxy';
 import { ExchangeContract } from '../../generated_contract_wrappers/exchange';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -174,7 +174,7 @@ describe('Exchange wrappers', () => {
                 expirationTimeSeconds: new BigNumber(Math.floor((Date.now() - 10000) / 1000)),
             });
 
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrKillOrderAsync(signedOrder, takerAddress),
                 RevertReason.OrderUnfillable,
             );
@@ -187,7 +187,7 @@ describe('Exchange wrappers', () => {
                 takerAssetFillAmount: signedOrder.takerAssetAmount.div(2),
             });
 
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 exchangeWrapper.fillOrKillOrderAsync(signedOrder, takerAddress),
                 RevertReason.CompleteFillFailed,
             );
@@ -500,7 +500,7 @@ describe('Exchange wrappers', () => {
 
                 await exchangeWrapper.fillOrKillOrderAsync(signedOrders[0], takerAddress);
 
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.batchFillOrKillOrdersAsync(signedOrders, takerAddress, {
                         takerAssetFillAmounts,
                     }),
@@ -703,7 +703,7 @@ describe('Exchange wrappers', () => {
                     orderFactory.newSignedOrder(),
                 ];
 
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.marketSellOrdersAsync(signedOrders, takerAddress, {
                         takerAssetFillAmount: Web3Wrapper.toBaseUnitAmount(new BigNumber(1000), 18),
                     }),
@@ -921,7 +921,7 @@ describe('Exchange wrappers', () => {
                     orderFactory.newSignedOrder(),
                 ];
 
-                return expectRevertReasonOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedAsync(
                     exchangeWrapper.marketBuyOrdersAsync(signedOrders, takerAddress, {
                         makerAssetFillAmount: Web3Wrapper.toBaseUnitAmount(new BigNumber(1000), 18),
                     }),
diff --git a/packages/contracts/test/libraries/lib_bytes.ts b/packages/contracts/test/libraries/lib_bytes.ts
index 963b51b8f..c80b61e19 100644
--- a/packages/contracts/test/libraries/lib_bytes.ts
+++ b/packages/contracts/test/libraries/lib_bytes.ts
@@ -9,7 +9,7 @@ import * as _ from 'lodash';
 
 import { TestLibBytesContract } from '../../generated_contract_wrappers/test_lib_bytes';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertOrOtherErrorAsync } from '../utils/assertions';
+import { expectContractCallFailed } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper';
@@ -100,7 +100,7 @@ describe('LibBytes', () => {
 
     describe('popLastByte', () => {
         it('should revert if length is 0', async () => {
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicPopLastByte.callAsync(constants.NULL_BYTES),
                 RevertReason.LibBytesGreaterThanZeroLengthRequired,
             );
@@ -116,7 +116,7 @@ describe('LibBytes', () => {
 
     describe('popLast20Bytes', () => {
         it('should revert if length is less than 20', async () => {
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicPopLast20Bytes.callAsync(byteArrayShorterThan20Bytes),
                 RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
             );
@@ -184,7 +184,7 @@ describe('LibBytes', () => {
 
     describe('deepCopyBytes', () => {
         it('should revert if dest is shorter than source', async () => {
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicDeepCopyBytes.callAsync(byteArrayShorterThan32Bytes, byteArrayLongerThan32Bytes),
                 RevertReason.LibBytesGreaterOrEqualToSourceBytesLengthRequired,
             );
@@ -237,7 +237,7 @@ describe('LibBytes', () => {
         it('should fail if the byte array is too short to hold an address', async () => {
             const shortByteArray = '0xabcdef';
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadAddress.callAsync(shortByteArray, offset),
                 RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
             );
@@ -245,7 +245,7 @@ describe('LibBytes', () => {
         it('should fail if the length between the offset and end of the byte array is too short to hold an address', async () => {
             const byteArray = testAddress;
             const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadAddress.callAsync(byteArray, badOffset),
                 RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
             );
@@ -281,7 +281,7 @@ describe('LibBytes', () => {
         });
         it('should fail if the byte array is too short to hold an address', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteAddress.callAsync(byteArrayShorterThan20Bytes, offset, testAddress),
                 RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
             );
@@ -289,7 +289,7 @@ describe('LibBytes', () => {
         it('should fail if the length between the offset and end of the byte array is too short to hold an address', async () => {
             const byteArray = byteArrayLongerThan32Bytes;
             const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteAddress.callAsync(byteArray, badOffset, testAddress),
                 RevertReason.LibBytesGreaterOrEqualTo20LengthRequired,
             );
@@ -313,14 +313,14 @@ describe('LibBytes', () => {
         });
         it('should fail if the byte array is too short to hold a bytes32', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytes32.callAsync(byteArrayShorterThan32Bytes, offset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
         });
         it('should fail if the length between the offset and end of the byte array is too short to hold a bytes32', async () => {
             const badOffset = new BigNumber(ethUtil.toBuffer(testBytes32).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytes32.callAsync(testBytes32, badOffset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -356,7 +356,7 @@ describe('LibBytes', () => {
         });
         it('should fail if the byte array is too short to hold a bytes32', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteBytes32.callAsync(byteArrayShorterThan32Bytes, offset, testBytes32),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -364,7 +364,7 @@ describe('LibBytes', () => {
         it('should fail if the length between the offset and end of the byte array is too short to hold a bytes32', async () => {
             const byteArray = byteArrayLongerThan32Bytes;
             const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteBytes32.callAsync(byteArray, badOffset, testBytes32),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -392,7 +392,7 @@ describe('LibBytes', () => {
         });
         it('should fail if the byte array is too short to hold a uint256', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadUint256.callAsync(byteArrayShorterThan32Bytes, offset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -402,7 +402,7 @@ describe('LibBytes', () => {
             const testUint256AsBuffer = ethUtil.toBuffer(formattedTestUint256);
             const byteArray = ethUtil.bufferToHex(testUint256AsBuffer);
             const badOffset = new BigNumber(testUint256AsBuffer.byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadUint256.callAsync(byteArray, badOffset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -442,7 +442,7 @@ describe('LibBytes', () => {
         });
         it('should fail if the byte array is too short to hold a uint256', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteUint256.callAsync(byteArrayShorterThan32Bytes, offset, testUint256),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -450,7 +450,7 @@ describe('LibBytes', () => {
         it('should fail if the length between the offset and end of the byte array is too short to hold a uint256', async () => {
             const byteArray = byteArrayLongerThan32Bytes;
             const badOffset = new BigNumber(ethUtil.toBuffer(byteArray).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteUint256.callAsync(byteArray, badOffset, testUint256),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -461,7 +461,7 @@ describe('LibBytes', () => {
         // AssertionError: expected promise to be rejected with an error including 'revert' but it was fulfilled with '0x08c379a0'
         it('should revert if byte array has a length < 4', async () => {
             const byteArrayLessThan4Bytes = '0x010101';
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytes4.callAsync(byteArrayLessThan4Bytes, new BigNumber(0)),
                 RevertReason.LibBytesGreaterOrEqualTo4LengthRequired,
             );
@@ -516,28 +516,28 @@ describe('LibBytes', () => {
         it('should fail if the byte array is too short to hold the length of a nested byte array', async () => {
             // The length of the nested array is 32 bytes. By storing less than 32 bytes, a length cannot be read.
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytesWithLength.callAsync(byteArrayShorterThan32Bytes, offset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
         });
         it('should fail if we store a nested byte array length, without a nested byte array', async () => {
             const offset = new BigNumber(0);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytesWithLength.callAsync(testBytes32, offset),
                 RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
             );
         });
         it('should fail if the length between the offset and end of the byte array is too short to hold the length of a nested byte array', async () => {
             const badOffset = new BigNumber(ethUtil.toBuffer(byteArrayShorterThan32Bytes).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytesWithLength.callAsync(byteArrayShorterThan32Bytes, badOffset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
         });
         it('should fail if the length between the offset and end of the byte array is too short to hold the nested byte array', async () => {
             const badOffset = new BigNumber(ethUtil.toBuffer(testBytes32).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicReadBytesWithLength.callAsync(testBytes32, badOffset),
                 RevertReason.LibBytesGreaterOrEqualTo32LengthRequired,
             );
@@ -649,7 +649,7 @@ describe('LibBytes', () => {
         it('should fail if the byte array is too short to hold the length of a nested byte array', async () => {
             const offset = new BigNumber(0);
             const emptyByteArray = ethUtil.bufferToHex(new Buffer(1));
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteBytesWithLength.callAsync(emptyByteArray, offset, longData),
                 RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
             );
@@ -657,7 +657,7 @@ describe('LibBytes', () => {
         it('should fail if the length between the offset and end of the byte array is too short to hold the length of a nested byte array)', async () => {
             const emptyByteArray = ethUtil.bufferToHex(new Buffer(shortTestBytesAsBuffer.byteLength));
             const badOffset = new BigNumber(ethUtil.toBuffer(shortTestBytesAsBuffer).byteLength);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 libBytes.publicWriteBytesWithLength.callAsync(emptyByteArray, badOffset, shortData),
                 RevertReason.LibBytesGreaterOrEqualToNestedBytesLengthRequired,
             );
diff --git a/packages/contracts/test/multisig/asset_proxy_owner.ts b/packages/contracts/test/multisig/asset_proxy_owner.ts
index cde86dd46..16231dfcb 100644
--- a/packages/contracts/test/multisig/asset_proxy_owner.ts
+++ b/packages/contracts/test/multisig/asset_proxy_owner.ts
@@ -14,8 +14,9 @@ import { MixinAuthorizableContract } from '../../generated_contract_wrappers/mix
 import { TestAssetProxyOwnerContract } from '../../generated_contract_wrappers/test_asset_proxy_owner';
 import { artifacts } from '../utils/artifacts';
 import {
-    expectRevertOrAlwaysFailingTransactionAsync,
-    expectRevertOrContractCallFailedAsync,
+    expectContractCallFailedWithoutReasonAsync,
+    expectContractCreationFailedWithoutReason,
+    expectTransactionFailedWithoutReasonAsync,
 } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
@@ -108,7 +109,7 @@ describe('AssetProxyOwner', () => {
         });
         it('should throw if a null address is included in assetProxyContracts', async () => {
             const assetProxyContractAddresses = [erc20Proxy.address, constants.NULL_ADDRESS];
-            return expectRevertOrAlwaysFailingTransactionAsync(
+            return expectContractCreationFailedWithoutReason(
                 AssetProxyOwnerContract.deployFrom0xArtifactAsync(
                     artifacts.AssetProxyOwner,
                     provider,
@@ -150,7 +151,7 @@ describe('AssetProxyOwner', () => {
     describe('registerAssetProxy', () => {
         it('should throw if not called by multisig', async () => {
             const isRegistered = true;
-            return expectRevertOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedWithoutReasonAsync(
                 testAssetProxyOwner.registerAssetProxy.sendTransactionAsync(erc20Proxy.address, isRegistered, {
                     from: owners[0],
                 }),
@@ -277,7 +278,7 @@ describe('AssetProxyOwner', () => {
                 );
                 const log = submitTxRes.logs[0] as LogWithDecodedArgs<SubmissionContractEventArgs>;
                 const txId = log.args.transactionId;
-                return expectRevertOrContractCallFailedAsync(
+                return expectContractCallFailedWithoutReasonAsync(
                     testAssetProxyOwner.testValidRemoveAuthorizedAddressAtIndexTx.callAsync(txId),
                 );
             });
@@ -312,7 +313,7 @@ describe('AssetProxyOwner', () => {
                 );
                 const log = submitTxRes.logs[0] as LogWithDecodedArgs<SubmissionContractEventArgs>;
                 const txId = log.args.transactionId;
-                return expectRevertOrContractCallFailedAsync(
+                return expectContractCallFailedWithoutReasonAsync(
                     testAssetProxyOwner.testValidRemoveAuthorizedAddressAtIndexTx.callAsync(txId),
                 );
             });
@@ -332,7 +333,7 @@ describe('AssetProxyOwner', () => {
                 const log = res.logs[0] as LogWithDecodedArgs<SubmissionContractEventArgs>;
                 const txId = log.args.transactionId;
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     testAssetProxyOwner.executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(txId, {
                         from: owners[1],
                     }),
@@ -354,7 +355,7 @@ describe('AssetProxyOwner', () => {
 
                 await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     testAssetProxyOwner.executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(txId, {
                         from: owners[1],
                     }),
@@ -376,7 +377,7 @@ describe('AssetProxyOwner', () => {
 
                 await multiSigWrapper.confirmTransactionAsync(txId, owners[1]);
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     testAssetProxyOwner.executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(txId, {
                         from: owners[1],
                     }),
@@ -433,7 +434,7 @@ describe('AssetProxyOwner', () => {
                 const isExecuted = tx[3];
                 expect(isExecuted).to.equal(true);
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     testAssetProxyOwner.executeRemoveAuthorizedAddressAtIndex.sendTransactionAsync(txId, {
                         from: owners[1],
                     }),
diff --git a/packages/contracts/test/multisig/multi_sig_with_time_lock.ts b/packages/contracts/test/multisig/multi_sig_with_time_lock.ts
index a746403d2..a7b99d867 100644
--- a/packages/contracts/test/multisig/multi_sig_with_time_lock.ts
+++ b/packages/contracts/test/multisig/multi_sig_with_time_lock.ts
@@ -8,7 +8,7 @@ import {
     SubmissionContractEventArgs,
 } from '../../generated_contract_wrappers/multi_sig_wallet_with_time_lock';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectTransactionFailedWithoutReasonAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { increaseTimeAndMineBlockAsync } from '../utils/increase_time';
@@ -67,7 +67,7 @@ describe('MultiSigWalletWithTimeLock', () => {
             });
 
             it('should throw when not called by wallet', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     multiSig.changeTimeLock.sendTransactionAsync(SECONDS_TIME_LOCKED, { from: owners[0] }),
                 );
             });
@@ -78,7 +78,7 @@ describe('MultiSigWalletWithTimeLock', () => {
                 const res = await multiSigWrapper.submitTransactionAsync(destination, changeTimeLockData, owners[0]);
                 const log = res.logs[0] as LogWithDecodedArgs<SubmissionContractEventArgs>;
                 const txId = log.args.transactionId;
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     multiSig.executeTransaction.sendTransactionAsync(txId, { from: owners[0] }),
                 );
             });
@@ -147,7 +147,7 @@ describe('MultiSigWalletWithTimeLock', () => {
             });
 
             it('should throw if it has enough confirmations but is not past the time lock', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     multiSig.executeTransaction.sendTransactionAsync(txId, { from: owners[0] }),
                 );
             });
diff --git a/packages/contracts/test/token_registry.ts b/packages/contracts/test/token_registry.ts
index 32f8cdee3..7cc43be9b 100644
--- a/packages/contracts/test/token_registry.ts
+++ b/packages/contracts/test/token_registry.ts
@@ -7,7 +7,7 @@ import * as _ from 'lodash';
 import { TokenRegistryContract } from '../generated_contract_wrappers/token_registry';
 
 import { artifacts } from './utils/artifacts';
-import { expectRevertOrAlwaysFailingTransactionAsync } from './utils/assertions';
+import { expectTransactionFailedWithoutReasonAsync } from './utils/assertions';
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { TokenRegWrapper } from './utils/token_registry_wrapper';
@@ -75,7 +75,7 @@ describe('TokenRegistry', () => {
 
     describe('addToken', () => {
         it('should throw when not called by owner', async () => {
-            return expectRevertOrAlwaysFailingTransactionAsync(tokenRegWrapper.addTokenAsync(token1, notOwner));
+            return expectTransactionFailedWithoutReasonAsync(tokenRegWrapper.addTokenAsync(token1, notOwner));
         });
 
         it('should add token metadata when called by owner', async () => {
@@ -87,20 +87,18 @@ describe('TokenRegistry', () => {
         it('should throw if token already exists', async () => {
             await tokenRegWrapper.addTokenAsync(token1, owner);
 
-            return expectRevertOrAlwaysFailingTransactionAsync(tokenRegWrapper.addTokenAsync(token1, owner));
+            return expectTransactionFailedWithoutReasonAsync(tokenRegWrapper.addTokenAsync(token1, owner));
         });
 
         it('should throw if token address is null', async () => {
-            return expectRevertOrAlwaysFailingTransactionAsync(tokenRegWrapper.addTokenAsync(nullToken, owner));
+            return expectTransactionFailedWithoutReasonAsync(tokenRegWrapper.addTokenAsync(nullToken, owner));
         });
 
         it('should throw if name already exists', async () => {
             await tokenRegWrapper.addTokenAsync(token1, owner);
             const duplicateNameToken = _.assign({}, token2, { name: token1.name });
 
-            return expectRevertOrAlwaysFailingTransactionAsync(
-                tokenRegWrapper.addTokenAsync(duplicateNameToken, owner),
-            );
+            return expectTransactionFailedWithoutReasonAsync(tokenRegWrapper.addTokenAsync(duplicateNameToken, owner));
         });
 
         it('should throw if symbol already exists', async () => {
@@ -109,7 +107,7 @@ describe('TokenRegistry', () => {
                 symbol: token1.symbol,
             });
 
-            return expectRevertOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedWithoutReasonAsync(
                 tokenRegWrapper.addTokenAsync(duplicateSymbolToken, owner),
             );
         });
@@ -136,7 +134,7 @@ describe('TokenRegistry', () => {
 
         describe('setTokenName', () => {
             it('should throw when not called by owner', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenName.sendTransactionAsync(token1.address, token2.name, { from: notOwner }),
                 );
             });
@@ -162,13 +160,13 @@ describe('TokenRegistry', () => {
             it('should throw if the name already exists', async () => {
                 await tokenRegWrapper.addTokenAsync(token2, owner);
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenName.sendTransactionAsync(token1.address, token2.name, { from: owner }),
                 );
             });
 
             it('should throw if token does not exist', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenName.sendTransactionAsync(nullToken.address, token2.name, { from: owner }),
                 );
             });
@@ -176,7 +174,7 @@ describe('TokenRegistry', () => {
 
         describe('setTokenSymbol', () => {
             it('should throw when not called by owner', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenSymbol.sendTransactionAsync(token1.address, token2.symbol, {
                         from: notOwner,
                     }),
@@ -202,7 +200,7 @@ describe('TokenRegistry', () => {
             it('should throw if the symbol already exists', async () => {
                 await tokenRegWrapper.addTokenAsync(token2, owner);
 
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenSymbol.sendTransactionAsync(token1.address, token2.symbol, {
                         from: owner,
                     }),
@@ -210,7 +208,7 @@ describe('TokenRegistry', () => {
             });
 
             it('should throw if token does not exist', async () => {
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.setTokenSymbol.sendTransactionAsync(nullToken.address, token2.symbol, {
                         from: owner,
                     }),
@@ -221,7 +219,7 @@ describe('TokenRegistry', () => {
         describe('removeToken', () => {
             it('should throw if not called by owner', async () => {
                 const index = new BigNumber(0);
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.removeToken.sendTransactionAsync(token1.address, index, { from: notOwner }),
                 );
             });
@@ -240,7 +238,7 @@ describe('TokenRegistry', () => {
 
             it('should throw if token does not exist', async () => {
                 const index = new BigNumber(0);
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.removeToken.sendTransactionAsync(nullToken.address, index, { from: owner }),
                 );
             });
@@ -248,7 +246,7 @@ describe('TokenRegistry', () => {
             it('should throw if token at given index does not match address', async () => {
                 await tokenRegWrapper.addTokenAsync(token2, owner);
                 const incorrectIndex = new BigNumber(0);
-                return expectRevertOrAlwaysFailingTransactionAsync(
+                return expectTransactionFailedWithoutReasonAsync(
                     tokenReg.removeToken.sendTransactionAsync(token2.address, incorrectIndex, { from: owner }),
                 );
             });
diff --git a/packages/contracts/test/tokens/ether_token.ts b/packages/contracts/test/tokens/ether_token.ts
index 25ef15595..a104fc915 100644
--- a/packages/contracts/test/tokens/ether_token.ts
+++ b/packages/contracts/test/tokens/ether_token.ts
@@ -5,7 +5,7 @@ import * as chai from 'chai';
 
 import { WETH9Contract } from '../../generated_contract_wrappers/weth9';
 import { artifacts } from '../utils/artifacts';
-import { expectInsufficientFundsAsync, expectRevertOrAlwaysFailingTransactionAsync } from '../utils/assertions';
+import { expectInsufficientFundsAsync, expectTransactionFailedWithoutReasonAsync } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper';
@@ -74,7 +74,7 @@ describe('EtherToken', () => {
             const initEthTokenBalance = await etherToken.balanceOf.callAsync(account);
             const ethTokensToWithdraw = initEthTokenBalance.plus(1);
 
-            return expectRevertOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedWithoutReasonAsync(
                 etherToken.withdraw.sendTransactionAsync(ethTokensToWithdraw),
             );
         });
diff --git a/packages/contracts/test/tokens/unlimited_allowance_token.ts b/packages/contracts/test/tokens/unlimited_allowance_token.ts
index 09a24950c..8a3b20d0f 100644
--- a/packages/contracts/test/tokens/unlimited_allowance_token.ts
+++ b/packages/contracts/test/tokens/unlimited_allowance_token.ts
@@ -5,7 +5,7 @@ import * as chai from 'chai';
 
 import { DummyERC20TokenContract } from '../../generated_contract_wrappers/dummy_e_r_c20_token';
 import { artifacts } from '../utils/artifacts';
-import { expectRevertOrOtherErrorAsync } from '../utils/assertions';
+import { expectContractCallFailed } from '../utils/assertions';
 import { chaiSetup } from '../utils/chai_setup';
 import { constants } from '../utils/constants';
 import { provider, txDefaults, web3Wrapper } from '../utils/web3_wrapper';
@@ -54,7 +54,7 @@ describe('UnlimitedAllowanceToken', () => {
         it('should throw if owner has insufficient balance', async () => {
             const ownerBalance = await token.balanceOf.callAsync(owner);
             const amountToTransfer = ownerBalance.plus(1);
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 token.transfer.callAsync(spender, amountToTransfer, { from: owner }),
                 RevertReason.Erc20InsufficientBalance,
             );
@@ -93,7 +93,7 @@ describe('UnlimitedAllowanceToken', () => {
                 await token.approve.sendTransactionAsync(spender, amountToTransfer, { from: owner }),
                 constants.AWAIT_TRANSACTION_MINED_MS,
             );
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 token.transferFrom.callAsync(owner, spender, amountToTransfer, {
                     from: spender,
                 }),
@@ -109,7 +109,7 @@ describe('UnlimitedAllowanceToken', () => {
             const isSpenderAllowanceInsufficient = spenderAllowance.cmp(amountToTransfer) < 0;
             expect(isSpenderAllowanceInsufficient).to.be.true();
 
-            return expectRevertOrOtherErrorAsync(
+            return expectContractCallFailed(
                 token.transferFrom.callAsync(owner, spender, amountToTransfer, {
                     from: spender,
                 }),
diff --git a/packages/contracts/test/utils/assertions.ts b/packages/contracts/test/utils/assertions.ts
index baba892d3..89e90ad2f 100644
--- a/packages/contracts/test/utils/assertions.ts
+++ b/packages/contracts/test/utils/assertions.ts
@@ -1,108 +1,153 @@
 import { RevertReason } from '@0xproject/types';
+import { logUtils } from '@0xproject/utils';
+import { NodeType } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import { TransactionReceipt, TransactionReceiptWithDecodedLogs } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { constants } from './constants';
 import { web3Wrapper } from './web3_wrapper';
 
 const expect = chai.expect;
 
-function _expectEitherErrorAsync<T>(p: Promise<T>, error1: string, error2: string): PromiseLike<void> {
-    return expect(p)
-        .to.be.rejected()
-        .then(e => {
-            expect(e).to.satisfy(
-                (err: Error) => _.includes(err.message, error1) || _.includes(err.message, error2),
-                `expected promise to reject with error message that includes "${error1}" or "${error2}", but got: ` +
-                    `"${e.message}"\n`,
-            );
-        });
+// Represents the return value of a `sendTransaction` call. The Promise should
+// resolve with either a transaction receipt or a transaction hash.
+export type sendTransactionResult = Promise<TransactionReceipt | TransactionReceiptWithDecodedLogs | string>;
+
+async function _getGanacheOrGethError(ganacheError: string, gethError: string): Promise<string> {
+    const nodeType = await web3Wrapper.getNodeTypeAsync();
+    switch (nodeType) {
+        case NodeType.Ganache:
+            return ganacheError;
+        case NodeType.Geth:
+            return gethError;
+        default:
+            throw new Error(`Unknown node type: ${nodeType}`);
+    }
+}
+
+async function _getInsufficientFundsErrorMessageAsync(): Promise<string> {
+    return _getGanacheOrGethError("sender doesn't have enough funds", 'insufficient funds');
+}
+
+async function _getTransactionFailedErrorMessageAsync(): Promise<string> {
+    return _getGanacheOrGethError('revert', 'always failing transaction');
+}
+
+async function _getContractCallFailedErrorMessageAsync(): Promise<string> {
+    return _getGanacheOrGethError('revert', 'Contract call failed');
 }
 
 /**
  * Rejects if the given Promise does not reject with an error indicating
  * insufficient funds.
- * @param p the Promise which is expected to reject
+ * @param p a promise resulting from a contract call or sendTransaction call.
  * @returns a new Promise which will reject if the conditions are not met and
  * otherwise resolve with no value.
  */
-export function expectInsufficientFundsAsync<T>(p: Promise<T>): PromiseLike<void> {
-    return _expectEitherErrorAsync(p, 'insufficient funds', "sender doesn't have enough funds");
+export async function expectInsufficientFundsAsync<T>(p: Promise<T>): Promise<void> {
+    const errMessage = await _getInsufficientFundsErrorMessageAsync();
+    return expect(p).to.be.rejectedWith(errMessage);
 }
 
 /**
- * Rejects if the given Promise does not reject with a "revert" error or the
- * given otherError.
- * @param p the Promise which is expected to reject
- * @param otherError the other error which is accepted as a valid reject error.
+ * Resolves if the the sendTransaction call fails with the given revert reason.
+ * However, since Geth does not support revert reasons for sendTransaction, this
+ * falls back to expectTransactionFailedWithoutReasonAsync if the backing
+ * Ethereum node is Geth.
+ * @param p a Promise resulting from a sendTransaction call
+ * @param reason a specific revert reason
  * @returns a new Promise which will reject if the conditions are not met and
  * otherwise resolve with no value.
  */
-export function expectRevertOrOtherErrorAsync<T>(p: Promise<T>, otherError: string): PromiseLike<void> {
-    return _expectEitherErrorAsync(p, constants.REVERT, otherError);
-}
+export async function expectTransactionFailedAsync(p: sendTransactionResult, reason: RevertReason): Promise<void> {
+    // HACK(albrow): This dummy `catch` should not be necessary, but if you
+    // remove it, there is an uncaught exception and the Node process will
+    // forcibly exit. It's possible this is a false positive in
+    // make-promises-safe.
+    p.catch(e => {
+        _.noop(e);
+    });
 
-/**
- * Rejects if the given Promise does not reject with a "revert" or "always
- * failing transaction" error.
- * @param p the Promise which is expected to reject
- * @returns a new Promise which will reject if the conditions are not met and
- * otherwise resolve with no value.
- */
-export function expectRevertOrAlwaysFailingTransactionAsync<T>(p: Promise<T>): PromiseLike<void> {
-    return expectRevertOrOtherErrorAsync(p, 'always failing transaction');
+    const nodeType = await web3Wrapper.getNodeTypeAsync();
+    switch (nodeType) {
+        case NodeType.Ganache:
+            return expect(p).to.be.rejectedWith(reason);
+        case NodeType.Geth:
+            logUtils.warn(
+                'WARNING: Geth does not support revert reasons for sendTransaction. This test will pass if the transaction fails for any reason.',
+            );
+            return expectTransactionFailedWithoutReasonAsync(p);
+        default:
+            throw new Error(`Unknown node type: ${nodeType}`);
+    }
 }
 
 /**
- * Rejects if at least one the following conditions is not met:
- * 1) The given Promise rejects with the given revert reason.
- * 2) The given Promise rejects with an error containing "always failing transaction"
- * 3) The given Promise fulfills with a txReceipt that has a status of 0 or '0', indicating the transaction failed.
- * 4) The given Promise fulfills with a txHash and corresponding txReceipt has a status of 0 or '0'.
- * @param p the Promise which is expected to reject
- * @param reason a specific revert reason
+ * Resolves if the transaction fails without a revert reason, or if the
+ * corresponding transactionReceipt has a status of 0 or '0', indicating
+ * failure.
+ * @param p a Promise resulting from a sendTransaction call
  * @returns a new Promise which will reject if the conditions are not met and
  * otherwise resolve with no value.
  */
-export async function expectRevertReasonOrAlwaysFailingTransactionAsync(
-    p: Promise<string | TransactionReceiptWithDecodedLogs | TransactionReceipt>,
-    reason: RevertReason,
-): Promise<void> {
+export async function expectTransactionFailedWithoutReasonAsync(p: sendTransactionResult): Promise<void> {
     return p
         .then(async result => {
-            let txReceiptStatus: string | 0 | 1 | null;
-            if (typeof result === 'string') {
-                // Result is a txHash. We need to make a web3 call to get the receipt.
+            let txReceiptStatus: null | string | 0 | 1;
+            if (_.isString(result)) {
+                // Result is a txHash. We need to make a web3 call to get the
+                // receipt, then get the status from the receipt.
                 const txReceipt = await web3Wrapper.awaitTransactionMinedAsync(result);
                 txReceiptStatus = txReceipt.status;
             } else if ('status' in result) {
-                // Result is a TransactionReceiptWithDecodedLogs or TransactionReceipt
-                // and status is a field of result.
+                // Result is a transaction receipt, so we can get the status
+                // directly.
                 txReceiptStatus = result.status;
             } else {
-                throw new Error('Unexpected result type');
+                throw new Error('Unexpected result type: ' + typeof result);
             }
             expect(_.toString(txReceiptStatus)).to.equal(
                 '0',
-                'transactionReceipt had a non-zero status, indicating success',
+                'Expected transaction to fail but receipt had a non-zero status, indicating success',
             );
         })
-        .catch(err => {
-            expect(err.message).to.satisfy(
-                (msg: string) => _.includes(msg, reason) || _.includes(msg, 'always failing transaction'),
-                `Expected ${reason} or 'always failing transaction' but error message was ${err.message}`,
-            );
+        .catch(async err => {
+            // If the promise rejects, we expect a specific error message,
+            // depending on the backing Ethereum node type.
+            const errMessage = await _getTransactionFailedErrorMessageAsync();
+            expect(err.message).to.include(errMessage);
         });
 }
 
 /**
- * Rejects if the given Promise does not reject with a "revert" or "Contract
- * call failed" error.
- * @param p the Promise which is expected to reject
+ * Resolves if the the contract call fails with the given revert reason.
+ * @param p a Promise resulting from a contract call
+ * @param reason a specific revert reason
+ * @returns a new Promise which will reject if the conditions are not met and
+ * otherwise resolve with no value.
+ */
+export async function expectContractCallFailed<T>(p: Promise<T>, reason: RevertReason): Promise<void> {
+    return expect(p).to.be.rejectedWith(reason);
+}
+
+/**
+ * Resolves if the contract call fails without a revert reason.
+ * @param p a Promise resulting from a contract call
+ * @returns a new Promise which will reject if the conditions are not met and
+ * otherwise resolve with no value.
+ */
+export async function expectContractCallFailedWithoutReasonAsync<T>(p: Promise<T>): Promise<void> {
+    const errMessage = await _getContractCallFailedErrorMessageAsync();
+    return expect(p).to.be.rejectedWith(errMessage);
+}
+
+/**
+ * Resolves if the contract creation/deployment fails without a revert reason.
+ * @param p a Promise resulting from a contract creation/deployment
  * @returns a new Promise which will reject if the conditions are not met and
  * otherwise resolve with no value.
  */
-export function expectRevertOrContractCallFailedAsync<T>(p: Promise<T>): PromiseLike<void> {
-    return expectRevertOrOtherErrorAsync<T>(p, 'Contract call failed');
+export async function expectContractCreationFailedWithoutReason<T>(p: Promise<T>): Promise<void> {
+    const errMessage = await _getTransactionFailedErrorMessageAsync();
+    return expect(p).to.be.rejectedWith(errMessage);
 }
diff --git a/packages/contracts/test/utils/constants.ts b/packages/contracts/test/utils/constants.ts
index 8e68f376d..7f3ad62e1 100644
--- a/packages/contracts/test/utils/constants.ts
+++ b/packages/contracts/test/utils/constants.ts
@@ -18,7 +18,6 @@ const TESTRPC_PRIVATE_KEYS_STRINGS = [
 
 export const constants = {
     INVALID_OPCODE: 'invalid opcode',
-    REVERT: 'revert',
     TESTRPC_NETWORK_ID: 50,
     // Note(albrow): In practice V8 and most other engines limit the minimum
     // interval for setInterval to 10ms. We still set it to 0 here in order to
diff --git a/packages/contracts/test/utils/core_combinatorial_utils.ts b/packages/contracts/test/utils/core_combinatorial_utils.ts
index 38723d53d..8c6c83014 100644
--- a/packages/contracts/test/utils/core_combinatorial_utils.ts
+++ b/packages/contracts/test/utils/core_combinatorial_utils.ts
@@ -17,7 +17,7 @@ import 'make-promises-safe';
 import { ExchangeContract, FillContractEventArgs } from '../../generated_contract_wrappers/exchange';
 
 import { artifacts } from './artifacts';
-import { expectRevertReasonOrAlwaysFailingTransactionAsync } from './assertions';
+import { expectTransactionFailedAsync } from './assertions';
 import { AssetWrapper } from './asset_wrapper';
 import { chaiSetup } from './chai_setup';
 import { constants } from './constants';
@@ -418,7 +418,7 @@ export class CoreCombinatorialUtils {
         fillRevertReasonIfExists: RevertReason | undefined,
     ): Promise<void> {
         if (!_.isUndefined(fillRevertReasonIfExists)) {
-            return expectRevertReasonOrAlwaysFailingTransactionAsync(
+            return expectTransactionFailedAsync(
                 this.exchangeWrapper.fillOrderAsync(signedOrder, this.takerAddress, { takerAssetFillAmount }),
                 fillRevertReasonIfExists,
             );
diff --git a/packages/dev-utils/src/blockchain_lifecycle.ts b/packages/dev-utils/src/blockchain_lifecycle.ts
index 587332f1a..abca6d386 100644
--- a/packages/dev-utils/src/blockchain_lifecycle.ts
+++ b/packages/dev-utils/src/blockchain_lifecycle.ts
@@ -1,11 +1,5 @@
 import { logUtils } from '@0xproject/utils';
-import { uniqueVersionIds, Web3Wrapper } from '@0xproject/web3-wrapper';
-import { includes } from 'lodash';
-
-enum NodeType {
-    Geth = 'GETH',
-    Ganache = 'GANACHE',
-}
+import { NodeType, Web3Wrapper } from '@0xproject/web3-wrapper';
 
 // HACK(albrow): 🐉 We have to do this so that debug.setHead works correctly.
 // (Geth does not seem to like debug.setHead(0), so by sending some transactions
@@ -23,7 +17,7 @@ export class BlockchainLifecycle {
         this._snapshotIdsStack = [];
     }
     public async startAsync(): Promise<void> {
-        const nodeType = await this._getNodeTypeAsync();
+        const nodeType = await this._web3Wrapper.getNodeTypeAsync();
         switch (nodeType) {
             case NodeType.Ganache:
                 const snapshotId = await this._web3Wrapper.takeSnapshotAsync();
@@ -44,7 +38,7 @@ export class BlockchainLifecycle {
         }
     }
     public async revertAsync(): Promise<void> {
-        const nodeType = await this._getNodeTypeAsync();
+        const nodeType = await this._web3Wrapper.getNodeTypeAsync();
         switch (nodeType) {
             case NodeType.Ganache:
                 const snapshotId = this._snapshotIdsStack.pop() as number;
@@ -61,16 +55,6 @@ export class BlockchainLifecycle {
                 throw new Error(`Unknown node type: ${nodeType}`);
         }
     }
-    private async _getNodeTypeAsync(): Promise<NodeType> {
-        const version = await this._web3Wrapper.getNodeVersionAsync();
-        if (includes(version, uniqueVersionIds.geth)) {
-            return NodeType.Geth;
-        } else if (includes(version, uniqueVersionIds.ganache)) {
-            return NodeType.Ganache;
-        } else {
-            throw new Error(`Unknown client version: ${version}`);
-        }
-    }
     private async _mineMinimumBlocksAsync(): Promise<void> {
         logUtils.warn('WARNING: minimum block number for tests not met. Mining additional blocks...');
         if (this._addresses.length === 0) {
diff --git a/packages/migrations/artifacts/2.0.0/ZRXToken.json b/packages/migrations/artifacts/2.0.0/ZRXToken.json
index cad596044..2078bb4d6 100644
--- a/packages/migrations/artifacts/2.0.0/ZRXToken.json
+++ b/packages/migrations/artifacts/2.0.0/ZRXToken.json
@@ -228,39 +228,39 @@
 		"evm": {
 			"bytecode": {
 				"linkReferences": {},
-				"object": "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",
-				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH12 0x33B2E3C9FD0803CE8000000 PUSH1 0x3 SSTORE CALLVALUE DUP1 ISZERO PUSH2 0x20 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x3 SLOAD CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SSTORE PUSH2 0x67B DUP1 PUSH2 0x43 PUSH1 0x0 CODECOPY PUSH1 0x0 RETURN STOP PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x98 JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x6FDDE03 DUP2 EQ PUSH2 0x9D JUMPI DUP1 PUSH4 0x95EA7B3 EQ PUSH2 0x127 JUMPI DUP1 PUSH4 0x18160DDD EQ PUSH2 0x16C JUMPI DUP1 PUSH4 0x23B872DD EQ PUSH2 0x193 JUMPI DUP1 PUSH4 0x313CE567 EQ PUSH2 0x1CA JUMPI DUP1 PUSH4 0x70A08231 EQ PUSH2 0x1F5 JUMPI DUP1 PUSH4 0x95D89B41 EQ PUSH2 0x223 JUMPI DUP1 PUSH4 0xA9059CBB EQ PUSH2 0x238 JUMPI DUP1 PUSH4 0xDD62ED3E EQ PUSH2 0x269 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0xA9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x29D JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0x20 DUP1 DUP3 MSTORE DUP4 MLOAD DUP2 DUP4 ADD MSTORE DUP4 MLOAD SWAP2 SWAP3 DUP4 SWAP3 SWAP1 DUP4 ADD SWAP2 DUP6 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xEC JUMPI DUP2 DUP2 ADD MLOAD DUP4 DUP3 ADD MSTORE PUSH1 0x20 ADD PUSH2 0xD4 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x119 JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x133 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x2D4 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x178 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH2 0x348 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x19F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH1 0x44 CALLDATALOAD PUSH2 0x34E JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x1D6 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x1DF PUSH2 0x4E8 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0xFF SWAP1 SWAP3 AND DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x201 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH2 0x4ED JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x22F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x515 JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x244 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x54C JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x275 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH2 0x617 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x11 DUP2 MSTORE PUSH32 0x30782050726F746F636F6C20546F6B656E000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP6 MSTORE SWAP1 DUP4 MSTORE DUP2 DUP5 KECCAK256 DUP7 SWAP1 SSTORE DUP2 MLOAD DUP7 DUP2 MSTORE SWAP2 MLOAD SWAP4 SWAP5 SWAP1 SWAP4 SWAP1 SWAP3 PUSH32 0x8C5BE1E5EBEC7D5BD14F71427D1E84F3DD0314C0F7B2291E5B200AC8C7C3B925 SWAP3 DUP3 SWAP1 SUB ADD SWAP1 LOG3 POP PUSH1 0x1 JUMPDEST SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x3 SLOAD DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE DUP3 MSTORE DUP1 DUP4 KECCAK256 SLOAD SWAP4 DUP4 MSTORE SWAP1 DUP3 SWAP1 MSTORE DUP2 KECCAK256 SLOAD SWAP1 SWAP2 SWAP1 DUP4 GT DUP1 ISZERO SWAP1 PUSH2 0x39B JUMPI POP DUP3 DUP2 LT ISZERO JUMPDEST DUP1 ISZERO PUSH2 0x3CE JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP5 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP4 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x4DB JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP1 DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP1 DUP3 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE SWAP2 DUP8 AND DUP2 MSTORE KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE PUSH32 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP2 LT ISZERO PUSH2 0x46D JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE SWAP1 SWAP2 MSTORE SWAP1 KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE JUMPDEST DUP4 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND DUP6 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF DUP6 PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 LOG3 PUSH1 0x1 SWAP2 POP PUSH2 0x4E0 JUMP JUMPDEST PUSH1 0x0 SWAP2 POP JUMPDEST POP SWAP4 SWAP3 POP POP POP JUMP JUMPDEST PUSH1 0x12 DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD SWAP1 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x3 DUP2 MSTORE PUSH32 0x5A52580000000000000000000000000000000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP2 KECCAK256 SLOAD DUP3 GT DUP1 ISZERO SWAP1 PUSH2 0x592 JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP3 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x60F JUMPI CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x20 DUP2 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 DUP1 SLOAD DUP8 SWAP1 SUB SWAP1 SSTORE PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP5 MSTORE SWAP3 DUP2 SWAP1 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE DUP1 MLOAD DUP7 DUP2 MSTORE SWAP1 MLOAD SWAP3 SWAP4 SWAP3 PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF SWAP3 SWAP2 DUP2 SWAP1 SUB SWAP1 SWAP2 ADD SWAP1 LOG3 POP PUSH1 0x1 PUSH2 0x342 JUMP JUMPDEST POP PUSH1 0x0 PUSH2 0x342 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP2 DUP3 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 SWAP4 SWAP1 SWAP5 AND DUP3 MSTORE SWAP2 SWAP1 SWAP2 MSTORE KECCAK256 SLOAD SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xa6 0x4d POP 0xba PUSH29 0xA8023B64D00C49E38AFA498258FDC2E4A694EF1C57201E9A757EC10029 ",
-				"sourceMap": "753:342:0:-;;;872:6;846:32;;1022:71;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1075:11:0;;1061:10;1052:8;:20;;;;;;;;;;:34;753:342;;;;;;"
+				"object": "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",
+				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH12 0x33B2E3C9FD0803CE8000000 PUSH1 0x3 SSTORE CALLVALUE DUP1 ISZERO PUSH2 0x20 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH1 0x3 SLOAD CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SSTORE PUSH2 0x67B DUP1 PUSH2 0x43 PUSH1 0x0 CODECOPY PUSH1 0x0 RETURN STOP PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x98 JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x6FDDE03 DUP2 EQ PUSH2 0x9D JUMPI DUP1 PUSH4 0x95EA7B3 EQ PUSH2 0x127 JUMPI DUP1 PUSH4 0x18160DDD EQ PUSH2 0x16C JUMPI DUP1 PUSH4 0x23B872DD EQ PUSH2 0x193 JUMPI DUP1 PUSH4 0x313CE567 EQ PUSH2 0x1CA JUMPI DUP1 PUSH4 0x70A08231 EQ PUSH2 0x1F5 JUMPI DUP1 PUSH4 0x95D89B41 EQ PUSH2 0x223 JUMPI DUP1 PUSH4 0xA9059CBB EQ PUSH2 0x238 JUMPI DUP1 PUSH4 0xDD62ED3E EQ PUSH2 0x269 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0xA9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x29D JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0x20 DUP1 DUP3 MSTORE DUP4 MLOAD DUP2 DUP4 ADD MSTORE DUP4 MLOAD SWAP2 SWAP3 DUP4 SWAP3 SWAP1 DUP4 ADD SWAP2 DUP6 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xEC JUMPI DUP2 DUP2 ADD MLOAD DUP4 DUP3 ADD MSTORE PUSH1 0x20 ADD PUSH2 0xD4 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x119 JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x133 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x2D4 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x178 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH2 0x348 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x19F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH1 0x44 CALLDATALOAD PUSH2 0x34E JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x1D6 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x1DF PUSH2 0x4E8 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0xFF SWAP1 SWAP3 AND DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x201 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH2 0x4ED JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x22F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x515 JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x244 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x54C JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x275 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH2 0x617 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x11 DUP2 MSTORE PUSH32 0x30782050726F746F636F6C20546F6B656E000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP6 MSTORE SWAP1 DUP4 MSTORE DUP2 DUP5 KECCAK256 DUP7 SWAP1 SSTORE DUP2 MLOAD DUP7 DUP2 MSTORE SWAP2 MLOAD SWAP4 SWAP5 SWAP1 SWAP4 SWAP1 SWAP3 PUSH32 0x8C5BE1E5EBEC7D5BD14F71427D1E84F3DD0314C0F7B2291E5B200AC8C7C3B925 SWAP3 DUP3 SWAP1 SUB ADD SWAP1 LOG3 POP PUSH1 0x1 JUMPDEST SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x3 SLOAD DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE DUP3 MSTORE DUP1 DUP4 KECCAK256 SLOAD SWAP4 DUP4 MSTORE SWAP1 DUP3 SWAP1 MSTORE DUP2 KECCAK256 SLOAD SWAP1 SWAP2 SWAP1 DUP4 GT DUP1 ISZERO SWAP1 PUSH2 0x39B JUMPI POP DUP3 DUP2 LT ISZERO JUMPDEST DUP1 ISZERO PUSH2 0x3CE JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP5 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP4 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x4DB JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP1 DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP1 DUP3 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE SWAP2 DUP8 AND DUP2 MSTORE KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE PUSH32 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP2 LT ISZERO PUSH2 0x46D JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE SWAP1 SWAP2 MSTORE SWAP1 KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE JUMPDEST DUP4 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND DUP6 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF DUP6 PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 LOG3 PUSH1 0x1 SWAP2 POP PUSH2 0x4E0 JUMP JUMPDEST PUSH1 0x0 SWAP2 POP JUMPDEST POP SWAP4 SWAP3 POP POP POP JUMP JUMPDEST PUSH1 0x12 DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD SWAP1 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x3 DUP2 MSTORE PUSH32 0x5A52580000000000000000000000000000000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP2 KECCAK256 SLOAD DUP3 GT DUP1 ISZERO SWAP1 PUSH2 0x592 JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP3 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x60F JUMPI CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x20 DUP2 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 DUP1 SLOAD DUP8 SWAP1 SUB SWAP1 SSTORE PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP5 MSTORE SWAP3 DUP2 SWAP1 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE DUP1 MLOAD DUP7 DUP2 MSTORE SWAP1 MLOAD SWAP3 SWAP4 SWAP3 PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF SWAP3 SWAP2 DUP2 SWAP1 SUB SWAP1 SWAP2 ADD SWAP1 LOG3 POP PUSH1 0x1 PUSH2 0x342 JUMP JUMPDEST POP PUSH1 0x0 PUSH2 0x342 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP2 DUP3 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 SWAP4 SWAP1 SWAP5 AND DUP3 MSTORE SWAP2 SWAP1 SWAP2 MSTORE KECCAK256 SLOAD SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xd9 0xd3 PUSH4 0xD7EEF4F7 SHL 0x2d 0xb2 0x21 PUSH21 0x233E9D08DC044F8BFD3EC76C93B896B38FEFDF0B00 0x29 ",
+				"sourceMap": "750:342:3:-;;;869:6;843:32;;1019:71;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1072:11:3;;1058:10;1049:8;:20;;;;;;;;;;:34;750:342;;;;;;"
 			},
 			"deployedBytecode": {
 				"linkReferences": {},
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-				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x98 JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x6FDDE03 DUP2 EQ PUSH2 0x9D JUMPI DUP1 PUSH4 0x95EA7B3 EQ PUSH2 0x127 JUMPI DUP1 PUSH4 0x18160DDD EQ PUSH2 0x16C JUMPI DUP1 PUSH4 0x23B872DD EQ PUSH2 0x193 JUMPI DUP1 PUSH4 0x313CE567 EQ PUSH2 0x1CA JUMPI DUP1 PUSH4 0x70A08231 EQ PUSH2 0x1F5 JUMPI DUP1 PUSH4 0x95D89B41 EQ PUSH2 0x223 JUMPI DUP1 PUSH4 0xA9059CBB EQ PUSH2 0x238 JUMPI DUP1 PUSH4 0xDD62ED3E EQ PUSH2 0x269 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0xA9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x29D JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0x20 DUP1 DUP3 MSTORE DUP4 MLOAD DUP2 DUP4 ADD MSTORE DUP4 MLOAD SWAP2 SWAP3 DUP4 SWAP3 SWAP1 DUP4 ADD SWAP2 DUP6 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xEC JUMPI DUP2 DUP2 ADD MLOAD DUP4 DUP3 ADD MSTORE PUSH1 0x20 ADD PUSH2 0xD4 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x119 JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x133 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x2D4 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x178 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH2 0x348 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x19F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH1 0x44 CALLDATALOAD PUSH2 0x34E JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x1D6 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x1DF PUSH2 0x4E8 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0xFF SWAP1 SWAP3 AND DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x201 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH2 0x4ED JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x22F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x515 JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x244 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x54C JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x275 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH2 0x617 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x11 DUP2 MSTORE PUSH32 0x30782050726F746F636F6C20546F6B656E000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP6 MSTORE SWAP1 DUP4 MSTORE DUP2 DUP5 KECCAK256 DUP7 SWAP1 SSTORE DUP2 MLOAD DUP7 DUP2 MSTORE SWAP2 MLOAD SWAP4 SWAP5 SWAP1 SWAP4 SWAP1 SWAP3 PUSH32 0x8C5BE1E5EBEC7D5BD14F71427D1E84F3DD0314C0F7B2291E5B200AC8C7C3B925 SWAP3 DUP3 SWAP1 SUB ADD SWAP1 LOG3 POP PUSH1 0x1 JUMPDEST SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x3 SLOAD DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE DUP3 MSTORE DUP1 DUP4 KECCAK256 SLOAD SWAP4 DUP4 MSTORE SWAP1 DUP3 SWAP1 MSTORE DUP2 KECCAK256 SLOAD SWAP1 SWAP2 SWAP1 DUP4 GT DUP1 ISZERO SWAP1 PUSH2 0x39B JUMPI POP DUP3 DUP2 LT ISZERO JUMPDEST DUP1 ISZERO PUSH2 0x3CE JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP5 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP4 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x4DB JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP1 DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP1 DUP3 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE SWAP2 DUP8 AND DUP2 MSTORE KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE PUSH32 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP2 LT ISZERO PUSH2 0x46D JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE SWAP1 SWAP2 MSTORE SWAP1 KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE JUMPDEST DUP4 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND DUP6 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF DUP6 PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 LOG3 PUSH1 0x1 SWAP2 POP PUSH2 0x4E0 JUMP JUMPDEST PUSH1 0x0 SWAP2 POP JUMPDEST POP SWAP4 SWAP3 POP POP POP JUMP JUMPDEST PUSH1 0x12 DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD SWAP1 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x3 DUP2 MSTORE PUSH32 0x5A52580000000000000000000000000000000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP2 KECCAK256 SLOAD DUP3 GT DUP1 ISZERO SWAP1 PUSH2 0x592 JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP3 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x60F JUMPI CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x20 DUP2 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 DUP1 SLOAD DUP8 SWAP1 SUB SWAP1 SSTORE PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP5 MSTORE SWAP3 DUP2 SWAP1 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE DUP1 MLOAD DUP7 DUP2 MSTORE SWAP1 MLOAD SWAP3 SWAP4 SWAP3 PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF SWAP3 SWAP2 DUP2 SWAP1 SUB SWAP1 SWAP2 ADD SWAP1 LOG3 POP PUSH1 0x1 PUSH2 0x342 JUMP JUMPDEST POP PUSH1 0x0 PUSH2 0x342 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP2 DUP3 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 SWAP4 SWAP1 SWAP5 AND DUP3 MSTORE SWAP2 SWAP1 SWAP2 MSTORE KECCAK256 SLOAD SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xa6 0x4d POP 0xba PUSH29 0xA8023B64D00C49E38AFA498258FDC2E4A694EF1C57201E9A757EC10029 ",
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+				"opcodes": "PUSH1 0x80 PUSH1 0x40 MSTORE PUSH1 0x4 CALLDATASIZE LT PUSH2 0x98 JUMPI PUSH4 0xFFFFFFFF PUSH29 0x100000000000000000000000000000000000000000000000000000000 PUSH1 0x0 CALLDATALOAD DIV AND PUSH4 0x6FDDE03 DUP2 EQ PUSH2 0x9D JUMPI DUP1 PUSH4 0x95EA7B3 EQ PUSH2 0x127 JUMPI DUP1 PUSH4 0x18160DDD EQ PUSH2 0x16C JUMPI DUP1 PUSH4 0x23B872DD EQ PUSH2 0x193 JUMPI DUP1 PUSH4 0x313CE567 EQ PUSH2 0x1CA JUMPI DUP1 PUSH4 0x70A08231 EQ PUSH2 0x1F5 JUMPI DUP1 PUSH4 0x95D89B41 EQ PUSH2 0x223 JUMPI DUP1 PUSH4 0xA9059CBB EQ PUSH2 0x238 JUMPI DUP1 PUSH4 0xDD62ED3E EQ PUSH2 0x269 JUMPI JUMPDEST PUSH1 0x0 DUP1 REVERT JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0xA9 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x29D JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0x20 DUP1 DUP3 MSTORE DUP4 MLOAD DUP2 DUP4 ADD MSTORE DUP4 MLOAD SWAP2 SWAP3 DUP4 SWAP3 SWAP1 DUP4 ADD SWAP2 DUP6 ADD SWAP1 DUP1 DUP4 DUP4 PUSH1 0x0 JUMPDEST DUP4 DUP2 LT ISZERO PUSH2 0xEC JUMPI DUP2 DUP2 ADD MLOAD DUP4 DUP3 ADD MSTORE PUSH1 0x20 ADD PUSH2 0xD4 JUMP JUMPDEST POP POP POP POP SWAP1 POP SWAP1 DUP2 ADD SWAP1 PUSH1 0x1F AND DUP1 ISZERO PUSH2 0x119 JUMPI DUP1 DUP3 SUB DUP1 MLOAD PUSH1 0x1 DUP4 PUSH1 0x20 SUB PUSH2 0x100 EXP SUB NOT AND DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP JUMPDEST POP SWAP3 POP POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x133 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x2D4 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 ISZERO ISZERO DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x178 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH2 0x348 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD SWAP2 DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x19F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH1 0x44 CALLDATALOAD PUSH2 0x34E JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x1D6 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x1DF PUSH2 0x4E8 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD PUSH1 0xFF SWAP1 SWAP3 AND DUP3 MSTORE MLOAD SWAP1 DUP2 SWAP1 SUB PUSH1 0x20 ADD SWAP1 RETURN JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x201 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH2 0x4ED JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x22F JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0xB2 PUSH2 0x515 JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x244 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x158 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD AND PUSH1 0x24 CALLDATALOAD PUSH2 0x54C JUMP JUMPDEST CALLVALUE DUP1 ISZERO PUSH2 0x275 JUMPI PUSH1 0x0 DUP1 REVERT JUMPDEST POP PUSH2 0x181 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF PUSH1 0x4 CALLDATALOAD DUP2 AND SWAP1 PUSH1 0x24 CALLDATALOAD AND PUSH2 0x617 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x11 DUP2 MSTORE PUSH32 0x30782050726F746F636F6C20546F6B656E000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP6 MSTORE SWAP1 DUP4 MSTORE DUP2 DUP5 KECCAK256 DUP7 SWAP1 SSTORE DUP2 MLOAD DUP7 DUP2 MSTORE SWAP2 MLOAD SWAP4 SWAP5 SWAP1 SWAP4 SWAP1 SWAP3 PUSH32 0x8C5BE1E5EBEC7D5BD14F71427D1E84F3DD0314C0F7B2291E5B200AC8C7C3B925 SWAP3 DUP3 SWAP1 SUB ADD SWAP1 LOG3 POP PUSH1 0x1 JUMPDEST SWAP3 SWAP2 POP POP JUMP JUMPDEST PUSH1 0x3 SLOAD DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE DUP3 MSTORE DUP1 DUP4 KECCAK256 SLOAD SWAP4 DUP4 MSTORE SWAP1 DUP3 SWAP1 MSTORE DUP2 KECCAK256 SLOAD SWAP1 SWAP2 SWAP1 DUP4 GT DUP1 ISZERO SWAP1 PUSH2 0x39B JUMPI POP DUP3 DUP2 LT ISZERO JUMPDEST DUP1 ISZERO PUSH2 0x3CE JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP5 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP4 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x4DB JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP1 DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP1 DUP3 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE SWAP2 DUP8 AND DUP2 MSTORE KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE PUSH32 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP2 LT ISZERO PUSH2 0x46D JUMPI PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP6 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 CALLER DUP5 MSTORE SWAP1 SWAP2 MSTORE SWAP1 KECCAK256 DUP1 SLOAD DUP5 SWAP1 SUB SWAP1 SSTORE JUMPDEST DUP4 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND DUP6 PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF DUP6 PUSH1 0x40 MLOAD DUP1 DUP3 DUP2 MSTORE PUSH1 0x20 ADD SWAP2 POP POP PUSH1 0x40 MLOAD DUP1 SWAP2 SUB SWAP1 LOG3 PUSH1 0x1 SWAP2 POP PUSH2 0x4E0 JUMP JUMPDEST PUSH1 0x0 SWAP2 POP JUMPDEST POP SWAP4 SWAP3 POP POP POP JUMP JUMPDEST PUSH1 0x12 DUP2 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD SWAP1 JUMP JUMPDEST PUSH1 0x40 DUP1 MLOAD DUP1 DUP3 ADD SWAP1 SWAP2 MSTORE PUSH1 0x3 DUP2 MSTORE PUSH32 0x5A52580000000000000000000000000000000000000000000000000000000000 PUSH1 0x20 DUP3 ADD MSTORE DUP2 JUMP JUMPDEST CALLER PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 DUP2 KECCAK256 SLOAD DUP3 GT DUP1 ISZERO SWAP1 PUSH2 0x592 JUMPI POP PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP4 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x20 DUP2 SWAP1 MSTORE PUSH1 0x40 SWAP1 KECCAK256 SLOAD DUP3 DUP2 ADD LT ISZERO JUMPDEST ISZERO PUSH2 0x60F JUMPI CALLER PUSH1 0x0 DUP2 DUP2 MSTORE PUSH1 0x20 DUP2 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 DUP1 SLOAD DUP8 SWAP1 SUB SWAP1 SSTORE PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF DUP8 AND DUP1 DUP5 MSTORE SWAP3 DUP2 SWAP1 KECCAK256 DUP1 SLOAD DUP8 ADD SWAP1 SSTORE DUP1 MLOAD DUP7 DUP2 MSTORE SWAP1 MLOAD SWAP3 SWAP4 SWAP3 PUSH32 0xDDF252AD1BE2C89B69C2B068FC378DAA952BA7F163C4A11628F55A4DF523B3EF SWAP3 SWAP2 DUP2 SWAP1 SUB SWAP1 SWAP2 ADD SWAP1 LOG3 POP PUSH1 0x1 PUSH2 0x342 JUMP JUMPDEST POP PUSH1 0x0 PUSH2 0x342 JUMP JUMPDEST PUSH20 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF SWAP2 DUP3 AND PUSH1 0x0 SWAP1 DUP2 MSTORE PUSH1 0x1 PUSH1 0x20 SWAP1 DUP2 MSTORE PUSH1 0x40 DUP1 DUP4 KECCAK256 SWAP4 SWAP1 SWAP5 AND DUP3 MSTORE SWAP2 SWAP1 SWAP2 MSTORE KECCAK256 SLOAD SWAP1 JUMP STOP LOG1 PUSH6 0x627A7A723058 KECCAK256 0xd9 0xd3 PUSH4 0xD7EEF4F7 SHL 0x2d 0xb2 0x21 PUSH21 0x233E9D08DC044F8BFD3EC76C93B896B38FEFDF0B00 0x29 ",
+				"sourceMap": "750:342:3:-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;920:49;;8:9:-1;5:2;;;30:1;27;20:12;5:2;920:49:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;8:100:-1;33:3;30:1;27:10;8:100;;;90:11;;;84:18;71:11;;;64:39;52:2;45:10;8:100;;;12:14;920:49:3;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1087:187:0;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1087:187:0;;;;;;;;;;;;;;;;;;;;;;;;;;;843:32:3;;8:9:-1;5:2;;;30:1;27;20:12;5:2;843:32:3;;;;;;;;;;;;;;;;;;;;1066:609:2;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1066:609:2;;;;;;;;;;;;;;802:35:3;;8:9:-1;5:2;;;30:1;27;20:12;5:2;802:35:3;;;;;;;;;;;;;;;;;;;;;;;982:99:0;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;982:99:0;;;;;;;975:37:3;;8:9:-1;5:2;;;30:1;27;20:12;5:2;975:37:3;;;;125:410:0;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;125:410:0;;;;;;;;;1280:126;;8:9:-1;5:2;;;30:1;27;20:12;5:2;-1:-1;1280:126:0;;;;;;;;;;;;920:49:3;;;;;;;;;;;;;;;;;;;:::o;1087:187:0:-;1168:10;1144:4;1160:19;;;:7;:19;;;;;;;;;:29;;;;;;;;;;;:38;;;1208;;;;;;;1144:4;;1160:29;;1168:10;;1208:38;;;;;;;;-1:-1:-1;1263:4:0;1087:187;;;;;:::o;843:32:3:-;;;;:::o;1066:609:2:-;1198:14;;;1161:4;1198:14;;;:7;:14;;;;;;;;1213:10;1198:26;;;;;;;;1238:15;;;;;;;;;;1161:4;;1198:26;1238:25;-1:-1:-1;1238:25:2;;;:60;;;1292:6;1279:9;:19;;1238:60;:115;;;;-1:-1:-1;1340:13:2;;;:8;:13;;;;;;;;;;;1314:22;;;:39;;1238:115;1234:435;;;1378:13;;;;:8;:13;;;;;;;;;;;:23;;;;;;1415:15;;;;;;:25;;;;;;;768:10;1458:20;;1454:95;;;1498:14;;;;;;;:7;:14;;;;;;;;1513:10;1498:26;;;;;;;:36;;;;;;;1454:95;1578:3;1562:28;;1571:5;1562:28;;;1583:6;1562:28;;;;;;;;;;;;;;;;;;1611:4;1604:11;;;;1234:435;1653:5;1646:12;;1234:435;1066:609;;;;;;:::o;802:35:3:-;835:2;802:35;:::o;982:99:0:-;1058:16;;1035:4;1058:16;;;;;;;;;;;;982:99::o;975:37:3:-;;;;;;;;;;;;;;;;;;;:::o;125:410:0:-;276:10;178:4;267:20;;;;;;;;;;;:30;-1:-1:-1;267:30:0;;;:73;;-1:-1:-1;327:13:0;;;:8;:13;;;;;;;;;;;301:22;;;:39;;267:73;263:266;;;365:10;356:8;:20;;;;;;;;;;;:30;;;;;;;:20;400:13;;;;;;;;;:23;;;;;;437:33;;;;;;;400:13;;365:10;437:33;;;;;;;;;;;-1:-1:-1;491:4:0;484:11;;263:266;-1:-1:-1;521:5:0;514:12;;1280:126;1374:15;;;;1351:4;1374:15;;;:7;:15;;;;;;;;:25;;;;;;;;;;;;;1280:126::o"
 			}
 		}
 	},
 	"sources": {
-		"current/tokens/ZRXToken/ZRXToken.sol": {
+		"1.0.0/ERC20Token/ERC20Token_v1.sol": {
 			"id": 0
 		},
-		"previous/ERC20Token/ERC20Token_v1.sol": {
+		"1.0.0/Token/Token_v1.sol": {
 			"id": 1
 		},
-		"previous/Token/Token_v1.sol": {
+		"1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol": {
 			"id": 2
 		},
-		"previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol": {
+		"2.0.0/tokens/ZRXToken/ZRXToken.sol": {
 			"id": 3
 		}
 	},
 	"sourceCodes": {
-		"current/tokens/ZRXToken/ZRXToken.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity ^0.4.11;\n\nimport { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from \"../../../previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol\";\n\ncontract ZRXToken is UnlimitedAllowanceToken {\n\n    uint8 constant public decimals = 18;\n    uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places\n    string constant public name = \"0x Protocol Token\";\n    string constant public symbol = \"ZRX\";\n\n    function ZRXToken() {\n        balances[msg.sender] = totalSupply;\n    }\n}\n",
-		"previous/ERC20Token/ERC20Token_v1.sol": "pragma solidity ^0.4.11;\n\nimport { Token_v1 as Token } from \"../Token/Token_v1.sol\";\n\ncontract ERC20Token_v1 is Token {\n\n    function transfer(address _to, uint _value) returns (bool) {\n        //Default assumes totalSupply can't be over max (2^256 - 1).\n        if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {\n            balances[msg.sender] -= _value;\n            balances[_to] += _value;\n            Transfer(msg.sender, _to, _value);\n            return true;\n        } else { return false; }\n    }\n\n    function transferFrom(address _from, address _to, uint _value) returns (bool) {\n        if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {\n            balances[_to] += _value;\n            balances[_from] -= _value;\n            allowed[_from][msg.sender] -= _value;\n            Transfer(_from, _to, _value);\n            return true;\n        } else { return false; }\n    }\n\n    function balanceOf(address _owner) constant returns (uint) {\n        return balances[_owner];\n    }\n\n    function approve(address _spender, uint _value) returns (bool) {\n        allowed[msg.sender][_spender] = _value;\n        Approval(msg.sender, _spender, _value);\n        return true;\n    }\n\n    function allowance(address _owner, address _spender) constant returns (uint) {\n        return allowed[_owner][_spender];\n    }\n\n    mapping (address => uint) balances;\n    mapping (address => mapping (address => uint)) allowed;\n    uint public totalSupply;\n}\n",
-		"previous/Token/Token_v1.sol": "pragma solidity ^0.4.11;\n\ncontract Token_v1 {\n\n    /// @return total amount of tokens\n    function totalSupply() constant returns (uint supply) {}\n\n    /// @param _owner The address from which the balance will be retrieved\n    /// @return The balance\n    function balanceOf(address _owner) constant returns (uint balance) {}\n\n    /// @notice send `_value` token to `_to` from `msg.sender`\n    /// @param _to The address of the recipient\n    /// @param _value The amount of token to be transferred\n    /// @return Whether the transfer was successful or not\n    function transfer(address _to, uint _value) returns (bool success) {}\n\n    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`\n    /// @param _from The address of the sender\n    /// @param _to The address of the recipient\n    /// @param _value The amount of token to be transferred\n    /// @return Whether the transfer was successful or not\n    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}\n\n    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens\n    /// @param _spender The address of the account able to transfer the tokens\n    /// @param _value The amount of wei to be approved for transfer\n    /// @return Whether the approval was successful or not\n    function approve(address _spender, uint _value) returns (bool success) {}\n\n    /// @param _owner The address of the account owning tokens\n    /// @param _spender The address of the account able to transfer the tokens\n    /// @return Amount of remaining tokens allowed to spent\n    function allowance(address _owner, address _spender) constant returns (uint remaining) {}\n\n    event Transfer(address indexed _from, address indexed _to, uint _value);\n    event Approval(address indexed _owner, address indexed _spender, uint _value);\n}\n\n",
-		"previous/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity ^0.4.11;\n\nimport { ERC20Token_v1 as ERC20Token } from \"../ERC20Token/ERC20Token_v1.sol\";\n\ncontract UnlimitedAllowanceToken_v1 is ERC20Token {\n\n    uint constant MAX_UINT = 2**256 - 1;\n\n    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.\n    /// @param _from Address to transfer from.\n    /// @param _to Address to transfer to.\n    /// @param _value Amount to transfer.\n    /// @return Success of transfer.\n    function transferFrom(address _from, address _to, uint _value)\n        public\n        returns (bool)\n    {\n        uint allowance = allowed[_from][msg.sender];\n        if (balances[_from] >= _value\n            && allowance >= _value\n            && balances[_to] + _value >= balances[_to]\n        ) {\n            balances[_to] += _value;\n            balances[_from] -= _value;\n            if (allowance < MAX_UINT) {\n                allowed[_from][msg.sender] -= _value;\n            }\n            Transfer(_from, _to, _value);\n            return true;\n        } else {\n            return false;\n        }\n    }\n}\n"
+		"1.0.0/ERC20Token/ERC20Token_v1.sol": "pragma solidity ^0.4.11;\n\nimport { Token_v1 as Token } from \"../Token/Token_v1.sol\";\n\ncontract ERC20Token_v1 is Token {\n\n    function transfer(address _to, uint _value) returns (bool) {\n        //Default assumes totalSupply can't be over max (2^256 - 1).\n        if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {\n            balances[msg.sender] -= _value;\n            balances[_to] += _value;\n            Transfer(msg.sender, _to, _value);\n            return true;\n        } else { return false; }\n    }\n\n    function transferFrom(address _from, address _to, uint _value) returns (bool) {\n        if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {\n            balances[_to] += _value;\n            balances[_from] -= _value;\n            allowed[_from][msg.sender] -= _value;\n            Transfer(_from, _to, _value);\n            return true;\n        } else { return false; }\n    }\n\n    function balanceOf(address _owner) constant returns (uint) {\n        return balances[_owner];\n    }\n\n    function approve(address _spender, uint _value) returns (bool) {\n        allowed[msg.sender][_spender] = _value;\n        Approval(msg.sender, _spender, _value);\n        return true;\n    }\n\n    function allowance(address _owner, address _spender) constant returns (uint) {\n        return allowed[_owner][_spender];\n    }\n\n    mapping (address => uint) balances;\n    mapping (address => mapping (address => uint)) allowed;\n    uint public totalSupply;\n}\n",
+		"1.0.0/Token/Token_v1.sol": "pragma solidity ^0.4.11;\n\ncontract Token_v1 {\n\n    /// @return total amount of tokens\n    function totalSupply() constant returns (uint supply) {}\n\n    /// @param _owner The address from which the balance will be retrieved\n    /// @return The balance\n    function balanceOf(address _owner) constant returns (uint balance) {}\n\n    /// @notice send `_value` token to `_to` from `msg.sender`\n    /// @param _to The address of the recipient\n    /// @param _value The amount of token to be transferred\n    /// @return Whether the transfer was successful or not\n    function transfer(address _to, uint _value) returns (bool success) {}\n\n    /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`\n    /// @param _from The address of the sender\n    /// @param _to The address of the recipient\n    /// @param _value The amount of token to be transferred\n    /// @return Whether the transfer was successful or not\n    function transferFrom(address _from, address _to, uint _value) returns (bool success) {}\n\n    /// @notice `msg.sender` approves `_addr` to spend `_value` tokens\n    /// @param _spender The address of the account able to transfer the tokens\n    /// @param _value The amount of wei to be approved for transfer\n    /// @return Whether the approval was successful or not\n    function approve(address _spender, uint _value) returns (bool success) {}\n\n    /// @param _owner The address of the account owning tokens\n    /// @param _spender The address of the account able to transfer the tokens\n    /// @return Amount of remaining tokens allowed to spent\n    function allowance(address _owner, address _spender) constant returns (uint remaining) {}\n\n    event Transfer(address indexed _from, address indexed _to, uint _value);\n    event Approval(address indexed _owner, address indexed _spender, uint _value);\n}\n\n",
+		"1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity ^0.4.11;\n\nimport { ERC20Token_v1 as ERC20Token } from \"../ERC20Token/ERC20Token_v1.sol\";\n\ncontract UnlimitedAllowanceToken_v1 is ERC20Token {\n\n    uint constant MAX_UINT = 2**256 - 1;\n\n    /// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited allowance.\n    /// @param _from Address to transfer from.\n    /// @param _to Address to transfer to.\n    /// @param _value Amount to transfer.\n    /// @return Success of transfer.\n    function transferFrom(address _from, address _to, uint _value)\n        public\n        returns (bool)\n    {\n        uint allowance = allowed[_from][msg.sender];\n        if (balances[_from] >= _value\n            && allowance >= _value\n            && balances[_to] + _value >= balances[_to]\n        ) {\n            balances[_to] += _value;\n            balances[_from] -= _value;\n            if (allowance < MAX_UINT) {\n                allowed[_from][msg.sender] -= _value;\n            }\n            Transfer(_from, _to, _value);\n            return true;\n        } else {\n            return false;\n        }\n    }\n}\n",
+		"2.0.0/tokens/ZRXToken/ZRXToken.sol": "/*\n\n  Copyright 2018 ZeroEx Intl.\n\n  Licensed under the Apache License, Version 2.0 (the \"License\");\n  you may not use this file except in compliance with the License.\n  You may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\n  Unless required by applicable law or agreed to in writing, software\n  distributed under the License is distributed on an \"AS IS\" BASIS,\n  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n  See the License for the specific language governing permissions and\n  limitations under the License.\n\n*/\n\npragma solidity ^0.4.11;\n\nimport { UnlimitedAllowanceToken_v1 as UnlimitedAllowanceToken } from \"../../../1.0.0/UnlimitedAllowanceToken/UnlimitedAllowanceToken_v1.sol\";\n\ncontract ZRXToken is UnlimitedAllowanceToken {\n\n    uint8 constant public decimals = 18;\n    uint public totalSupply = 10**27; // 1 billion tokens, 18 decimal places\n    string constant public name = \"0x Protocol Token\";\n    string constant public symbol = \"ZRX\";\n\n    function ZRXToken() {\n        balances[msg.sender] = totalSupply;\n    }\n}\n"
 	},
-	"sourceTreeHashHex": "0xbaaa4c45ee7e505106ec3f265920d9be632c2dec05ba8ea8e7e7404805ee62a5",
+	"sourceTreeHashHex": "0xde47979523dda114901886ad7b4f9f43f0f3ccf10556e2b56d29370f0bc74d1d",
 	"compiler": {
 		"name": "solc",
 		"version": "soljson-v0.4.24+commit.e67f0147.js",
@@ -283,4 +283,4 @@
 		}
 	},
 	"networks": {}
-}
+}
\ No newline at end of file
diff --git a/packages/web3-wrapper/src/index.ts b/packages/web3-wrapper/src/index.ts
index b14fa7406..66ef0a784 100644
--- a/packages/web3-wrapper/src/index.ts
+++ b/packages/web3-wrapper/src/index.ts
@@ -1,2 +1,2 @@
-export { Web3Wrapper, uniqueVersionIds } from './web3_wrapper';
+export { Web3Wrapper, uniqueVersionIds, NodeType } from './web3_wrapper';
 export { Web3WrapperErrors } from './types';
diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts
index 6ea69883c..e4df31def 100644
--- a/packages/web3-wrapper/src/web3_wrapper.ts
+++ b/packages/web3-wrapper/src/web3_wrapper.ts
@@ -31,6 +31,12 @@ export const uniqueVersionIds = {
     ganache: 'EthereumJS TestRPC',
 };
 
+// NodeType represents the type of the backing Ethereum node.
+export enum NodeType {
+    Geth = 'GETH',
+    Ganache = 'GANACHE',
+}
+
 /**
  * A wrapper around the Web3.js 0.x library that provides a consistent, clean promise-based interface.
  */
@@ -489,6 +495,21 @@ export class Web3Wrapper {
     public async setHeadAsync(blockNumber: number): Promise<void> {
         await this._sendRawPayloadAsync<void>({ method: 'debug_setHead', params: [this._web3.toHex(blockNumber)] });
     }
+    /**
+     * Returns either NodeType.Geth or NodeType.Ganache depending on the type of
+     * the backing Ethereum node. Throws for any other type of node. This
+     * function caches the result and so subsequent calls are fast.
+     */
+    public async getNodeTypeAsync(): Promise<NodeType> {
+        const version = await this.getNodeVersionAsync();
+        if (_.includes(version, uniqueVersionIds.geth)) {
+            return NodeType.Geth;
+        } else if (_.includes(version, uniqueVersionIds.ganache)) {
+            return NodeType.Ganache;
+        } else {
+            throw new Error(`Unknown client version: ${version}`);
+        }
+    }
     private async _sendRawPayloadAsync<A>(payload: Partial<JSONRPCRequestPayload>): Promise<A> {
         const sendAsync = this._web3.currentProvider.sendAsync.bind(this._web3.currentProvider);
         const payloadWithDefaults = {