diff --git a/contracts/coordinator/test/coordinator.ts b/contracts/coordinator/test/coordinator.ts
index fe31ba5038..6b69ddda6b 100644
--- a/contracts/coordinator/test/coordinator.ts
+++ b/contracts/coordinator/test/coordinator.ts
@@ -2,15 +2,17 @@ import { ERC20ProxyContract, ERC20Wrapper } from '@0x/contracts-asset-proxy';
 import { DummyERC20TokenContract } from '@0x/contracts-erc20';
 import {
     artifacts as exchangeArtifacts,
+    constants as exchangeConstants,
     ExchangeCancelEventArgs,
     ExchangeCancelUpToEventArgs,
     ExchangeContract,
+    exchangeDataEncoder,
     ExchangeFillEventArgs,
+    ExchangeFunctionName,
 } from '@0x/contracts-exchange';
 import {
     chaiSetup,
     constants,
-    exchangeDataEncoder,
     expectTransactionFailedAsync,
     getLatestBlockTimestampAsync,
     OrderFactory,
@@ -128,7 +130,7 @@ describe('Coordinator tests', () => {
     });
 
     describe('single order fills', () => {
-        for (const fnName of constants.SINGLE_FILL_FN_NAMES) {
+        for (const fnName of exchangeConstants.SINGLE_FILL_FN_NAMES) {
             it(`${fnName} should fill the order with a signed approval`, async () => {
                 const orders = [await orderFactory.newSignedOrderAsync()];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -292,7 +294,7 @@ describe('Coordinator tests', () => {
         }
     });
     describe('batch order fills', () => {
-        for (const fnName of [...constants.MARKET_FILL_FN_NAMES, ...constants.BATCH_FILL_FN_NAMES]) {
+        for (const fnName of [...exchangeConstants.MARKET_FILL_FN_NAMES, ...exchangeConstants.BATCH_FILL_FN_NAMES]) {
             it(`${fnName} should fill the orders with a signed approval`, async () => {
                 const orders = [await orderFactory.newSignedOrderAsync(), await orderFactory.newSignedOrderAsync()];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -443,7 +445,7 @@ describe('Coordinator tests', () => {
     describe('cancels', () => {
         it('cancelOrder call should be successful without an approval', async () => {
             const orders = [await orderFactory.newSignedOrderAsync()];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.CANCEL_ORDER, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.CancelOrder, orders);
             const transaction = makerTransactionFactory.newSignedTransaction(data);
             const transactionReceipt = await web3Wrapper.awaitTransactionSuccessAsync(
                 await coordinatorContract.executeTransaction.sendTransactionAsync(
@@ -471,7 +473,7 @@ describe('Coordinator tests', () => {
         });
         it('batchCancelOrders call should be successful without an approval', async () => {
             const orders = [await orderFactory.newSignedOrderAsync(), await orderFactory.newSignedOrderAsync()];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.BATCH_CANCEL_ORDERS, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.BatchCancelOrders, orders);
             const transaction = makerTransactionFactory.newSignedTransaction(data);
             const transactionReceipt = await web3Wrapper.awaitTransactionSuccessAsync(
                 await coordinatorContract.executeTransaction.sendTransactionAsync(
@@ -501,7 +503,7 @@ describe('Coordinator tests', () => {
         });
         it('cancelOrdersUpTo call should be successful without an approval', async () => {
             const orders: SignedOrder[] = [];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.CANCEL_ORDERS_UP_TO, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.CancelOrdersUpTo, orders);
             const transaction = makerTransactionFactory.newSignedTransaction(data);
             const transactionReceipt = await web3Wrapper.awaitTransactionSuccessAsync(
                 await coordinatorContract.executeTransaction.sendTransactionAsync(
diff --git a/contracts/coordinator/test/mixins.ts b/contracts/coordinator/test/mixins.ts
index 8cbd31775d..c6bb878ee3 100644
--- a/contracts/coordinator/test/mixins.ts
+++ b/contracts/coordinator/test/mixins.ts
@@ -1,8 +1,8 @@
+import { constants as exchangeConstants, exchangeDataEncoder, ExchangeFunctionName } from '@0x/contracts-exchange';
 import {
     addressUtils,
     chaiSetup,
     constants,
-    exchangeDataEncoder,
     expectContractCallFailedAsync,
     getLatestBlockTimestampAsync,
     provider,
@@ -144,7 +144,7 @@ describe('Mixins tests', () => {
     });
 
     describe('decodeOrdersFromFillData', () => {
-        for (const fnName of constants.SINGLE_FILL_FN_NAMES) {
+        for (const fnName of exchangeConstants.SINGLE_FILL_FN_NAMES) {
             it(`should correctly decode the orders for ${fnName} data`, async () => {
                 const orders = [defaultOrder];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -157,7 +157,7 @@ describe('Mixins tests', () => {
                 expect(orders).to.deep.eq(decodedSignedOrders);
             });
         }
-        for (const fnName of constants.BATCH_FILL_FN_NAMES) {
+        for (const fnName of exchangeConstants.BATCH_FILL_FN_NAMES) {
             it(`should correctly decode the orders for ${fnName} data`, async () => {
                 const orders = [defaultOrder, defaultOrder];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -170,7 +170,7 @@ describe('Mixins tests', () => {
                 expect(orders).to.deep.eq(decodedSignedOrders);
             });
         }
-        for (const fnName of constants.MARKET_FILL_FN_NAMES) {
+        for (const fnName of exchangeConstants.MARKET_FILL_FN_NAMES) {
             it(`should correctly decode the orders for ${fnName} data`, async () => {
                 const orders = [defaultOrder, defaultOrder];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -183,7 +183,11 @@ describe('Mixins tests', () => {
                 expect(orders).to.deep.eq(decodedSignedOrders);
             });
         }
-        for (const fnName of [constants.CANCEL_ORDER, constants.BATCH_CANCEL_ORDERS, constants.CANCEL_ORDERS_UP_TO]) {
+        for (const fnName of [
+            ExchangeFunctionName.CancelOrder,
+            ExchangeFunctionName.BatchCancelOrders,
+            ExchangeFunctionName.CancelOrdersUpTo,
+        ]) {
             it(`should correctly decode the orders for ${fnName} data`, async () => {
                 const orders = [defaultOrder, defaultOrder];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -208,7 +212,7 @@ describe('Mixins tests', () => {
     });
 
     describe('Single order approvals', () => {
-        for (const fnName of constants.SINGLE_FILL_FN_NAMES) {
+        for (const fnName of exchangeConstants.SINGLE_FILL_FN_NAMES) {
             it(`Should be successful: function=${fnName}, caller=tx_signer, senderAddress=[verifier], approval_sig=[approver1], expiration=[valid]`, async () => {
                 const orders = [defaultOrder];
                 const data = exchangeDataEncoder.encodeOrdersToExchangeData(fnName, orders);
@@ -377,9 +381,9 @@ describe('Mixins tests', () => {
     });
     describe('Batch order approvals', () => {
         for (const fnName of [
-            ...constants.BATCH_FILL_FN_NAMES,
-            ...constants.MARKET_FILL_FN_NAMES,
-            constants.MATCH_ORDERS,
+            ...exchangeConstants.BATCH_FILL_FN_NAMES,
+            ...exchangeConstants.MARKET_FILL_FN_NAMES,
+            ExchangeFunctionName.MatchOrders,
         ]) {
             it(`Should be successful: function=${fnName} caller=tx_signer, senderAddress=[verifier,verifier], feeRecipient=[approver1,approver1], approval_sig=[approver1], expiration=[valid]`, async () => {
                 const orders = [defaultOrder, defaultOrder];
@@ -694,7 +698,7 @@ describe('Mixins tests', () => {
     describe('cancels', () => {
         it('should allow the tx signer to call `cancelOrder` without approval', async () => {
             const orders = [defaultOrder];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.CANCEL_ORDER, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.CancelOrder, orders);
             const transaction = transactionFactory.newSignedTransaction(data);
             await mixins.assertValidCoordinatorApprovals.callAsync(
                 transaction,
@@ -707,7 +711,7 @@ describe('Mixins tests', () => {
         });
         it('should allow the tx signer to call `batchCancelOrders` without approval', async () => {
             const orders = [defaultOrder, defaultOrder];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.BATCH_CANCEL_ORDERS, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.BatchCancelOrders, orders);
             const transaction = transactionFactory.newSignedTransaction(data);
             await mixins.assertValidCoordinatorApprovals.callAsync(
                 transaction,
@@ -719,8 +723,7 @@ describe('Mixins tests', () => {
             );
         });
         it('should allow the tx signer to call `cancelOrdersUpTo` without approval', async () => {
-            const orders: SignedOrder[] = [];
-            const data = exchangeDataEncoder.encodeOrdersToExchangeData(constants.CANCEL_ORDERS_UP_TO, orders);
+            const data = exchangeDataEncoder.encodeOrdersToExchangeData(ExchangeFunctionName.CancelOrdersUpTo);
             const transaction = transactionFactory.newSignedTransaction(data);
             await mixins.assertValidCoordinatorApprovals.callAsync(
                 transaction,
diff --git a/contracts/exchange/test/core.ts b/contracts/exchange/test/core.ts
index 84269275f2..bee19b1327 100644
--- a/contracts/exchange/test/core.ts
+++ b/contracts/exchange/test/core.ts
@@ -42,6 +42,7 @@ import * as _ from 'lodash';
 import { Erc1155Wrapper } from '../../erc1155/lib/src';
 import {
     artifacts,
+    constants as exchangeConstants,
     ExchangeCancelEventArgs,
     ExchangeContract,
     ExchangeWrapper,
@@ -247,7 +248,7 @@ describe('Exchange core', () => {
                 });
             });
         };
-        describe('fillOrder reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+        describe('fillOrder reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
         it('should throw if signature is invalid', async () => {
             signedOrder = await orderFactory.newSignedOrderAsync({
diff --git a/contracts/exchange/test/match_orders.ts b/contracts/exchange/test/match_orders.ts
index 75859dc646..43b397867f 100644
--- a/contracts/exchange/test/match_orders.ts
+++ b/contracts/exchange/test/match_orders.ts
@@ -21,6 +21,7 @@ import * as _ from 'lodash';
 
 import {
     artifacts,
+    constants as exchangeConstants,
     ExchangeContract,
     ExchangeWrapper,
     MatchOrderTester,
@@ -592,7 +593,7 @@ describe('matchOrders', () => {
                 });
             });
         };
-        describe('matchOrders reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+        describe('matchOrders reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
         it('should transfer the correct amounts when orders completely fill each other', async () => {
             // Create orders to match
diff --git a/contracts/exchange/test/wrapper.ts b/contracts/exchange/test/wrapper.ts
index 5fa7b0460d..4a540c28ea 100644
--- a/contracts/exchange/test/wrapper.ts
+++ b/contracts/exchange/test/wrapper.ts
@@ -20,7 +20,13 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
 
-import { artifacts, ExchangeContract, ExchangeWrapper, ReentrantERC20TokenContract } from '../src';
+import {
+    artifacts,
+    constants as exchangeConstants,
+    ExchangeContract,
+    ExchangeWrapper,
+    ReentrantERC20TokenContract,
+} from '../src';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -155,7 +161,7 @@ describe('Exchange wrappers', () => {
                 });
             });
         };
-        describe('fillOrKillOrder reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+        describe('fillOrKillOrder reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
         it('should transfer the correct amounts', async () => {
             const signedOrder = await orderFactory.newSignedOrderAsync({
@@ -244,7 +250,7 @@ describe('Exchange wrappers', () => {
                 });
             });
         };
-        describe('fillOrderNoThrow reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+        describe('fillOrderNoThrow reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
         it('should transfer the correct amounts', async () => {
             const signedOrder = await orderFactory.newSignedOrderAsync({
@@ -462,7 +468,7 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('batchFillOrders reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('batchFillOrders reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should transfer the correct amounts', async () => {
                 const takerAssetFillAmounts: BigNumber[] = [];
@@ -529,7 +535,8 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('batchFillOrKillOrders reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('batchFillOrKillOrders reentrancy tests', () =>
+                reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should transfer the correct amounts', async () => {
                 const takerAssetFillAmounts: BigNumber[] = [];
@@ -613,7 +620,8 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('batchFillOrdersNoThrow reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('batchFillOrdersNoThrow reentrancy tests', () =>
+                reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should transfer the correct amounts', async () => {
                 const takerAssetFillAmounts: BigNumber[] = [];
@@ -746,7 +754,7 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('marketSellOrders reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('marketSellOrders reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should stop when the entire takerAssetFillAmount is filled', async () => {
                 const takerAssetFillAmount = signedOrders[0].takerAssetAmount.plus(
@@ -865,7 +873,8 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('marketSellOrdersNoThrow reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('marketSellOrdersNoThrow reentrancy tests', () =>
+                reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should stop when the entire takerAssetFillAmount is filled', async () => {
                 const takerAssetFillAmount = signedOrders[0].takerAssetAmount.plus(
@@ -1011,7 +1020,7 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('marketBuyOrders reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('marketBuyOrders reentrancy tests', () => reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should stop when the entire makerAssetFillAmount is filled', async () => {
                 const makerAssetFillAmount = signedOrders[0].makerAssetAmount.plus(
@@ -1130,7 +1139,8 @@ describe('Exchange wrappers', () => {
                     });
                 });
             };
-            describe('marketBuyOrdersNoThrow reentrancy tests', () => reentrancyTest(constants.FUNCTIONS_WITH_MUTEX));
+            describe('marketBuyOrdersNoThrow reentrancy tests', () =>
+                reentrancyTest(exchangeConstants.FUNCTIONS_WITH_MUTEX));
 
             it('should stop when the entire makerAssetFillAmount is filled', async () => {
                 const makerAssetFillAmount = signedOrders[0].makerAssetAmount.plus(