update contract_wrappers to use new artifacts and abi-gen wrappers packages

8 files changed, 80 insertions, 72 deletions

diff --git a/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts
index 31b3b6755..205a5ed10 100644
--- a/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/erc20_proxy_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ERC20ProxyContract } from '@0xproject/abi-gen-wrappers';
+import { ERC20Proxy } from '@0xproject/contract-artifacts';
 import { AssetProxyId } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { ContractAbi } from 'ethereum-types';
@@ -12,9 +13,9 @@ import { ContractWrapper } from './contract_wrapper';
  * This class includes the functionality related to interacting with the ERC20Proxy contract.
  */
 export class ERC20ProxyWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.ERC20Proxy.compilerOutput.abi;
+    public abi: ContractAbi = ERC20Proxy.compilerOutput.abi;
     public address: string;
-    private _erc20ProxyContractIfExists?: wrappers.ERC20ProxyContract;
+    private _erc20ProxyContractIfExists?: ERC20ProxyContract;
     /**
      * Instantiate ERC20ProxyWrapper
      * @param web3Wrapper Web3Wrapper instance to use
@@ -62,11 +63,11 @@ export class ERC20ProxyWrapper extends ContractWrapper {
     private _invalidateContractInstance(): void {
         delete this._erc20ProxyContractIfExists;
     }
-    private _getERC20ProxyContract(): wrappers.ERC20ProxyContract {
+    private _getERC20ProxyContract(): ERC20ProxyContract {
         if (!_.isUndefined(this._erc20ProxyContractIfExists)) {
             return this._erc20ProxyContractIfExists;
         }
-        const contractInstance = new wrappers.ERC20ProxyContract(
+        const contractInstance = new ERC20ProxyContract(
             this.abi,
             this.address,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/erc20_token_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc20_token_wrapper.ts
index 53cda5d08..68928e71f 100644
--- a/packages/contract-wrappers/src/contract_wrappers/erc20_token_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/erc20_token_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ERC20TokenContract, ERC20TokenEventArgs, ERC20TokenEvents } from '@0xproject/abi-gen-wrappers';
+import { ERC20Token } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
@@ -29,9 +30,9 @@ const removeUndefinedProperties = _.pickBy;
  * to the 0x ERC20 Proxy smart contract.
  */
 export class ERC20TokenWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.ERC20Token.compilerOutput.abi;
+    public abi: ContractAbi = ERC20Token.compilerOutput.abi;
     public UNLIMITED_ALLOWANCE_IN_BASE_UNITS = constants.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
-    private _tokenContractsByAddress: { [address: string]: wrappers.ERC20TokenContract };
+    private _tokenContractsByAddress: { [address: string]: ERC20TokenContract };
     private _erc20ProxyWrapper: ERC20ProxyWrapper;
     /**
      * Instantiate ERC20TokenWrapper
@@ -350,15 +351,15 @@ export class ERC20TokenWrapper extends ContractWrapper {
      * @param   isVerbose           Enable verbose subscription warnings (e.g recoverable network issues encountered)
      * @return Subscription token used later to unsubscribe
      */
-    public subscribe<ArgsType extends wrappers.ERC20TokenEventArgs>(
+    public subscribe<ArgsType extends ERC20TokenEventArgs>(
         tokenAddress: string,
-        eventName: wrappers.ERC20TokenEvents,
+        eventName: ERC20TokenEvents,
         indexFilterValues: IndexedFilterValues,
         callback: EventCallback<ArgsType>,
         isVerbose: boolean = false,
     ): string {
         assert.isETHAddressHex('tokenAddress', tokenAddress);
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ERC20TokenEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ERC20TokenEvents);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         assert.isFunction('callback', callback);
         const normalizedTokenAddress = tokenAddress.toLowerCase();
@@ -366,7 +367,7 @@ export class ERC20TokenWrapper extends ContractWrapper {
             normalizedTokenAddress,
             eventName,
             indexFilterValues,
-            artifacts.ERC20Token.compilerOutput.abi,
+            ERC20Token.compilerOutput.abi,
             callback,
             isVerbose,
         );
@@ -395,14 +396,14 @@ export class ERC20TokenWrapper extends ContractWrapper {
      *                              the value is the value you are interested in. E.g `{_from: aUserAddressHex}`
      * @return  Array of logs that match the parameters
      */
-    public async getLogsAsync<ArgsType extends wrappers.ERC20TokenEventArgs>(
+    public async getLogsAsync<ArgsType extends ERC20TokenEventArgs>(
         tokenAddress: string,
-        eventName: wrappers.ERC20TokenEvents,
+        eventName: ERC20TokenEvents,
         blockRange: BlockRange,
         indexFilterValues: IndexedFilterValues,
     ): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
         assert.isETHAddressHex('tokenAddress', tokenAddress);
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ERC20TokenEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ERC20TokenEvents);
         assert.doesConformToSchema('blockRange', blockRange, schemas.blockRangeSchema);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         const normalizedTokenAddress = tokenAddress.toLowerCase();
@@ -411,7 +412,7 @@ export class ERC20TokenWrapper extends ContractWrapper {
             eventName,
             blockRange,
             indexFilterValues,
-            artifacts.ERC20Token.compilerOutput.abi,
+            ERC20Token.compilerOutput.abi,
         );
         return logs;
     }
@@ -422,7 +423,7 @@ export class ERC20TokenWrapper extends ContractWrapper {
         this.unsubscribeAll();
         this._tokenContractsByAddress = {};
     }
-    private async _getTokenContractAsync(tokenAddress: string): Promise<wrappers.ERC20TokenContract> {
+    private async _getTokenContractAsync(tokenAddress: string): Promise<ERC20TokenContract> {
         const normalizedTokenAddress = tokenAddress.toLowerCase();
         let tokenContract = this._tokenContractsByAddress[normalizedTokenAddress];
         if (!_.isUndefined(tokenContract)) {
@@ -434,7 +435,7 @@ export class ERC20TokenWrapper extends ContractWrapper {
         if (!doesContractExist) {
             throw new Error(ContractWrappersError.ERC20TokenContractDoesNotExist);
         }
-        const contractInstance = new wrappers.ERC20TokenContract(
+        const contractInstance = new ERC20TokenContract(
             this.abi,
             normalizedTokenAddress,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/erc721_proxy_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc721_proxy_wrapper.ts
index 2472d512b..963d5b40f 100644
--- a/packages/contract-wrappers/src/contract_wrappers/erc721_proxy_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/erc721_proxy_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ERC721ProxyContract } from '@0xproject/abi-gen-wrappers';
+import { ERC721Proxy } from '@0xproject/contract-artifacts';
 import { AssetProxyId } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { ContractAbi } from 'ethereum-types';
@@ -12,9 +13,9 @@ import { ContractWrapper } from './contract_wrapper';
  * This class includes the functionality related to interacting with the ERC721Proxy contract.
  */
 export class ERC721ProxyWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.ERC20Proxy.compilerOutput.abi;
+    public abi: ContractAbi = ERC721Proxy.compilerOutput.abi;
     public address: string;
-    private _erc721ProxyContractIfExists?: wrappers.ERC721ProxyContract;
+    private _erc721ProxyContractIfExists?: ERC721ProxyContract;
     /**
      * Instantiate ERC721ProxyWrapper
      * @param web3Wrapper Web3Wrapper instance to use
@@ -62,11 +63,11 @@ export class ERC721ProxyWrapper extends ContractWrapper {
     private _invalidateContractInstance(): void {
         delete this._erc721ProxyContractIfExists;
     }
-    private _getERC721ProxyContract(): wrappers.ERC721ProxyContract {
+    private _getERC721ProxyContract(): ERC721ProxyContract {
         if (!_.isUndefined(this._erc721ProxyContractIfExists)) {
             return this._erc721ProxyContractIfExists;
         }
-        const contractInstance = new wrappers.ERC721ProxyContract(
+        const contractInstance = new ERC721ProxyContract(
             this.abi,
             this.address,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
index 7fcd74eaf..3d58908d8 100644
--- a/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/erc721_token_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ERC721TokenContract, ERC721TokenEventArgs, ERC721TokenEvents } from '@0xproject/abi-gen-wrappers';
+import { ERC721Token } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
@@ -29,8 +30,8 @@ const removeUndefinedProperties = _.pickBy;
  * to the 0x ERC721 Proxy smart contract.
  */
 export class ERC721TokenWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.ERC721Token.compilerOutput.abi;
-    private _tokenContractsByAddress: { [address: string]: wrappers.ERC721TokenContract };
+    public abi: ContractAbi = ERC721Token.compilerOutput.abi;
+    private _tokenContractsByAddress: { [address: string]: ERC721TokenContract };
     private _erc721ProxyWrapper: ERC721ProxyWrapper;
     /**
      * Instantiate ERC721TokenWrapper
@@ -377,15 +378,15 @@ export class ERC721TokenWrapper extends ContractWrapper {
      * @param   isVerbose           Enable verbose subscription warnings (e.g recoverable network issues encountered)
      * @return Subscription token used later to unsubscribe
      */
-    public subscribe<ArgsType extends wrappers.ERC721TokenEventArgs>(
+    public subscribe<ArgsType extends ERC721TokenEventArgs>(
         tokenAddress: string,
-        eventName: wrappers.ERC721TokenEvents,
+        eventName: ERC721TokenEvents,
         indexFilterValues: IndexedFilterValues,
         callback: EventCallback<ArgsType>,
         isVerbose: boolean = false,
     ): string {
         assert.isETHAddressHex('tokenAddress', tokenAddress);
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ERC721TokenEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ERC721TokenEvents);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         assert.isFunction('callback', callback);
         const normalizedTokenAddress = tokenAddress.toLowerCase();
@@ -393,7 +394,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
             normalizedTokenAddress,
             eventName,
             indexFilterValues,
-            artifacts.ERC721Token.compilerOutput.abi,
+            ERC721Token.compilerOutput.abi,
             callback,
             isVerbose,
         );
@@ -422,14 +423,14 @@ export class ERC721TokenWrapper extends ContractWrapper {
      *                              the value is the value you are interested in. E.g `{_from: aUserAddressHex}`
      * @return  Array of logs that match the parameters
      */
-    public async getLogsAsync<ArgsType extends wrappers.ERC721TokenEventArgs>(
+    public async getLogsAsync<ArgsType extends ERC721TokenEventArgs>(
         tokenAddress: string,
-        eventName: wrappers.ERC721TokenEvents,
+        eventName: ERC721TokenEvents,
         blockRange: BlockRange,
         indexFilterValues: IndexedFilterValues,
     ): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
         assert.isETHAddressHex('tokenAddress', tokenAddress);
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ERC721TokenEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ERC721TokenEvents);
         assert.doesConformToSchema('blockRange', blockRange, schemas.blockRangeSchema);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         const normalizedTokenAddress = tokenAddress.toLowerCase();
@@ -438,7 +439,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
             eventName,
             blockRange,
             indexFilterValues,
-            artifacts.ERC721Token.compilerOutput.abi,
+            ERC721Token.compilerOutput.abi,
         );
         return logs;
     }
@@ -449,7 +450,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
         this.unsubscribeAll();
         this._tokenContractsByAddress = {};
     }
-    private async _getTokenContractAsync(tokenAddress: string): Promise<wrappers.ERC721TokenContract> {
+    private async _getTokenContractAsync(tokenAddress: string): Promise<ERC721TokenContract> {
         const normalizedTokenAddress = tokenAddress.toLowerCase();
         let tokenContract = this._tokenContractsByAddress[normalizedTokenAddress];
         if (!_.isUndefined(tokenContract)) {
@@ -461,7 +462,7 @@ export class ERC721TokenWrapper extends ContractWrapper {
         if (!doesContractExist) {
             throw new Error(ContractWrappersError.ERC721TokenContractDoesNotExist);
         }
-        const contractInstance = new wrappers.ERC721TokenContract(
+        const contractInstance = new ERC721TokenContract(
             this.abi,
             normalizedTokenAddress,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/ether_token_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/ether_token_wrapper.ts
index 526324abd..a6f2fd81e 100644
--- a/packages/contract-wrappers/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/ether_token_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { WETH9Contract, WETH9EventArgs, WETH9Events } from '@0xproject/abi-gen-wrappers';
+import { WETH9 } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
@@ -18,9 +19,9 @@ const removeUndefinedProperties = _.pickBy;
  * The caller can convert ETH into the equivalent number of wrapped ETH ERC20 tokens and back.
  */
 export class EtherTokenWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.WETH9.compilerOutput.abi;
+    public abi: ContractAbi = WETH9.compilerOutput.abi;
     private _etherTokenContractsByAddress: {
-        [address: string]: wrappers.WETH9Contract;
+        [address: string]: WETH9Contract;
     } = {};
     private _erc20TokenWrapper: ERC20TokenWrapper;
     /**
@@ -120,15 +121,15 @@ export class EtherTokenWrapper extends ContractWrapper {
      *                              the value is the value you are interested in. E.g `{_owner: aUserAddressHex}`
      * @return  Array of logs that match the parameters
      */
-    public async getLogsAsync<ArgsType extends wrappers.WETH9EventArgs>(
+    public async getLogsAsync<ArgsType extends WETH9EventArgs>(
         etherTokenAddress: string,
-        eventName: wrappers.WETH9Events,
+        eventName: WETH9Events,
         blockRange: BlockRange,
         indexFilterValues: IndexedFilterValues,
     ): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
         assert.isETHAddressHex('etherTokenAddress', etherTokenAddress);
         const normalizedEtherTokenAddress = etherTokenAddress.toLowerCase();
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.WETH9Events);
+        assert.doesBelongToStringEnum('eventName', eventName, WETH9Events);
         assert.doesConformToSchema('blockRange', blockRange, schemas.blockRangeSchema);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         const logs = await this._getLogsAsync<ArgsType>(
@@ -136,7 +137,7 @@ export class EtherTokenWrapper extends ContractWrapper {
             eventName,
             blockRange,
             indexFilterValues,
-            artifacts.WETH9.compilerOutput.abi,
+            WETH9.compilerOutput.abi,
         );
         return logs;
     }
@@ -150,23 +151,23 @@ export class EtherTokenWrapper extends ContractWrapper {
      * @param   isVerbose           Enable verbose subscription warnings (e.g recoverable network issues encountered)
      * @return Subscription token used later to unsubscribe
      */
-    public subscribe<ArgsType extends wrappers.WETH9EventArgs>(
+    public subscribe<ArgsType extends WETH9EventArgs>(
         etherTokenAddress: string,
-        eventName: wrappers.WETH9Events,
+        eventName: WETH9Events,
         indexFilterValues: IndexedFilterValues,
         callback: EventCallback<ArgsType>,
         isVerbose: boolean = false,
     ): string {
         assert.isETHAddressHex('etherTokenAddress', etherTokenAddress);
         const normalizedEtherTokenAddress = etherTokenAddress.toLowerCase();
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.WETH9Events);
+        assert.doesBelongToStringEnum('eventName', eventName, WETH9Events);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         assert.isFunction('callback', callback);
         const subscriptionToken = this._subscribe<ArgsType>(
             normalizedEtherTokenAddress,
             eventName,
             indexFilterValues,
-            artifacts.WETH9.compilerOutput.abi,
+            WETH9.compilerOutput.abi,
             callback,
             isVerbose,
         );
@@ -191,7 +192,7 @@ export class EtherTokenWrapper extends ContractWrapper {
         this.unsubscribeAll();
         this._etherTokenContractsByAddress = {};
     }
-    private async _getEtherTokenContractAsync(etherTokenAddress: string): Promise<wrappers.WETH9Contract> {
+    private async _getEtherTokenContractAsync(etherTokenAddress: string): Promise<WETH9Contract> {
         let etherTokenContract = this._etherTokenContractsByAddress[etherTokenAddress];
         if (!_.isUndefined(etherTokenContract)) {
             return etherTokenContract;
@@ -203,7 +204,7 @@ export class EtherTokenWrapper extends ContractWrapper {
         if (!doesContractExist) {
             throw new Error(ContractWrappersError.EtherTokenContractDoesNotExist);
         }
-        const contractInstance = new wrappers.WETH9Contract(
+        const contractInstance = new WETH9Contract(
             this.abi,
             etherTokenAddress,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
index b65baee55..6b3694bc5 100644
--- a/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/exchange_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ExchangeContract, ExchangeEventArgs, ExchangeEvents } from '@0xproject/abi-gen-wrappers';
+import { Exchange } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import {
     assetDataUtils,
@@ -40,10 +41,10 @@ import { ERC721TokenWrapper } from './erc721_token_wrapper';
  * events of the 0x V2 Exchange smart contract.
  */
 export class ExchangeWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.Exchange.compilerOutput.abi;
+    public abi: ContractAbi = Exchange.compilerOutput.abi;
     public address: string;
     public zrxTokenAddress: string;
-    private _exchangeContractIfExists?: wrappers.ExchangeContract;
+    private _exchangeContractIfExists?: ExchangeContract;
     private _erc721TokenWrapper: ERC721TokenWrapper;
     private _erc20TokenWrapper: ERC20TokenWrapper;
     /**
@@ -1039,20 +1040,20 @@ export class ExchangeWrapper extends ContractWrapper {
      * @param   isVerbose           Enable verbose subscription warnings (e.g recoverable network issues encountered)
      * @return Subscription token used later to unsubscribe
      */
-    public subscribe<ArgsType extends wrappers.ExchangeEventArgs>(
-        eventName: wrappers.ExchangeEvents,
+    public subscribe<ArgsType extends ExchangeEventArgs>(
+        eventName: ExchangeEvents,
         indexFilterValues: IndexedFilterValues,
         callback: EventCallback<ArgsType>,
         isVerbose: boolean = false,
     ): string {
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ExchangeEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ExchangeEvents);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         assert.isFunction('callback', callback);
         const subscriptionToken = this._subscribe<ArgsType>(
             this.address,
             eventName,
             indexFilterValues,
-            artifacts.Exchange.compilerOutput.abi,
+            Exchange.compilerOutput.abi,
             callback,
             isVerbose,
         );
@@ -1079,12 +1080,12 @@ export class ExchangeWrapper extends ContractWrapper {
      *                              the value is the value you are interested in. E.g `{_from: aUserAddressHex}`
      * @return  Array of logs that match the parameters
      */
-    public async getLogsAsync<ArgsType extends wrappers.ExchangeEventArgs>(
-        eventName: wrappers.ExchangeEvents,
+    public async getLogsAsync<ArgsType extends ExchangeEventArgs>(
+        eventName: ExchangeEvents,
         blockRange: BlockRange,
         indexFilterValues: IndexedFilterValues,
     ): Promise<Array<LogWithDecodedArgs<ArgsType>>> {
-        assert.doesBelongToStringEnum('eventName', eventName, wrappers.ExchangeEvents);
+        assert.doesBelongToStringEnum('eventName', eventName, ExchangeEvents);
         assert.doesConformToSchema('blockRange', blockRange, schemas.blockRangeSchema);
         assert.doesConformToSchema('indexFilterValues', indexFilterValues, schemas.indexFilterValuesSchema);
         const logs = await this._getLogsAsync<ArgsType>(
@@ -1092,7 +1093,7 @@ export class ExchangeWrapper extends ContractWrapper {
             eventName,
             blockRange,
             indexFilterValues,
-            artifacts.Exchange.compilerOutput.abi,
+            Exchange.compilerOutput.abi,
         );
         return logs;
     }
@@ -1178,11 +1179,11 @@ export class ExchangeWrapper extends ContractWrapper {
         delete this._exchangeContractIfExists;
     }
     // tslint:enable:no-unused-variable
-    private async _getExchangeContractAsync(): Promise<wrappers.ExchangeContract> {
+    private async _getExchangeContractAsync(): Promise<ExchangeContract> {
         if (!_.isUndefined(this._exchangeContractIfExists)) {
             return this._exchangeContractIfExists;
         }
-        const contractInstance = new wrappers.ExchangeContract(
+        const contractInstance = new ExchangeContract(
             this.abi,
             this.address,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/forwarder_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/forwarder_wrapper.ts
index cd8f9ece9..22fc916e2 100644
--- a/packages/contract-wrappers/src/contract_wrappers/forwarder_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/forwarder_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { ForwarderContract } from '@0xproject/abi-gen-wrappers';
+import { Forwarder } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import { AssetProxyId, SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
@@ -21,11 +22,11 @@ import { ContractWrapper } from './contract_wrapper';
  * This class includes the functionality related to interacting with the Forwarder contract.
  */
 export class ForwarderWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.Forwarder.compilerOutput.abi;
+    public abi: ContractAbi = Forwarder.compilerOutput.abi;
     public address: string;
     public zrxTokenAddress: string;
     public etherTokenAddress: string;
-    private _forwarderContractIfExists?: wrappers.ForwarderContract;
+    private _forwarderContractIfExists?: ForwarderContract;
     // TODO(albrow): Make addresses optional?
     constructor(web3Wrapper: Web3Wrapper, address: string, zrxTokenAddress: string, etherTokenAddress: string) {
         super(web3Wrapper);
@@ -215,11 +216,11 @@ export class ForwarderWrapper extends ContractWrapper {
     private _invalidateContractInstance(): void {
         delete this._forwarderContractIfExists;
     }
-    private async _getForwarderContractAsync(): Promise<wrappers.ForwarderContract> {
+    private async _getForwarderContractAsync(): Promise<ForwarderContract> {
         if (!_.isUndefined(this._forwarderContractIfExists)) {
             return this._forwarderContractIfExists;
         }
-        const contractInstance = new wrappers.ForwarderContract(
+        const contractInstance = new ForwarderContract(
             this.abi,
             this.address,
             this._web3Wrapper.getProvider(),
diff --git a/packages/contract-wrappers/src/contract_wrappers/order_validator_wrapper.ts b/packages/contract-wrappers/src/contract_wrappers/order_validator_wrapper.ts
index 23e0d42c1..cb67d57f7 100644
--- a/packages/contract-wrappers/src/contract_wrappers/order_validator_wrapper.ts
+++ b/packages/contract-wrappers/src/contract_wrappers/order_validator_wrapper.ts
@@ -1,4 +1,5 @@
-import { artifacts, wrappers } from '@0xproject/contracts';
+import { OrderValidatorContract } from '@0xproject/abi-gen-wrappers';
+import { OrderValidator } from '@0xproject/contract-artifacts';
 import { schemas } from '@0xproject/json-schemas';
 import { SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
@@ -15,9 +16,9 @@ import { ContractWrapper } from './contract_wrapper';
  * This class includes the functionality related to interacting with the OrderValidator contract.
  */
 export class OrderValidatorWrapper extends ContractWrapper {
-    public abi: ContractAbi = artifacts.OrderValidator.compilerOutput.abi;
+    public abi: ContractAbi = OrderValidator.compilerOutput.abi;
     public address: string;
-    private _orderValidatorContractIfExists?: wrappers.OrderValidatorContract;
+    private _orderValidatorContractIfExists?: OrderValidatorContract;
     /**
      * Instantiate OrderValidatorWrapper
      * @param web3Wrapper Web3Wrapper instance to use.
@@ -172,11 +173,11 @@ export class OrderValidatorWrapper extends ContractWrapper {
     private _invalidateContractInstance(): void {
         delete this._orderValidatorContractIfExists;
     }
-    private async _getOrderValidatorContractAsync(): Promise<wrappers.OrderValidatorContract> {
+    private async _getOrderValidatorContractAsync(): Promise<OrderValidatorContract> {
         if (!_.isUndefined(this._orderValidatorContractIfExists)) {
             return this._orderValidatorContractIfExists;
         }
-        const contractInstance = new wrappers.OrderValidatorContract(
+        const contractInstance = new OrderValidatorContract(
             this.abi,
             this.address,
             this._web3Wrapper.getProvider(),