Merge pull request #1385 from 0xProject/feature/contracts-monorepo-5

Refactor our protocol interfaces into `@0x/contracts-interfaces`

36 files changed, 26 insertions, 689 deletions

diff --git a/contracts/core/compiler.json b/contracts/core/compiler.json
index 7e527130a..239c25919 100644
--- a/contracts/core/compiler.json
+++ b/contracts/core/compiler.json
@@ -33,11 +33,7 @@
         "Exchange",
         "ExchangeWrapper",
         "Forwarder",
-        "IAssetData",
-        "IAssetProxy",
         "InvalidERC721Receiver",
-        "IValidator",
-        "IWallet",
         "MixinAuthorizable",
         "MultiAssetProxy",
         "OrderValidator",
diff --git a/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol b/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
index ca5a64a26..d98136922 100644
--- a/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
+++ b/contracts/core/contracts/examples/ExchangeWrapper/ExchangeWrapper.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 
 
diff --git a/contracts/core/contracts/examples/Validator/Validator.sol b/contracts/core/contracts/examples/Validator/Validator.sol
index 72ed528ba..e488a9ca7 100644
--- a/contracts/core/contracts/examples/Validator/Validator.sol
+++ b/contracts/core/contracts/examples/Validator/Validator.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../protocol/Exchange/interfaces/IValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IValidator.sol";
 
 
 contract Validator is 
diff --git a/contracts/core/contracts/examples/Wallet/Wallet.sol b/contracts/core/contracts/examples/Wallet/Wallet.sol
index 3738be841..8edc74eb3 100644
--- a/contracts/core/contracts/examples/Wallet/Wallet.sol
+++ b/contracts/core/contracts/examples/Wallet/Wallet.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../../protocol/Exchange/interfaces/IWallet.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWallet.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 
 
diff --git a/contracts/core/contracts/examples/Whitelist/Whitelist.sol b/contracts/core/contracts/examples/Whitelist/Whitelist.sol
index cfcddddd3..2a3d33738 100644
--- a/contracts/core/contracts/examples/Whitelist/Whitelist.sol
+++ b/contracts/core/contracts/examples/Whitelist/Whitelist.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 
diff --git a/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol b/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
index a40991ae7..90b6f4648 100644
--- a/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
+++ b/contracts/core/contracts/extensions/DutchAuction/DutchAuction.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
diff --git a/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol b/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
index 0f98ae595..00be0f1bd 100644
--- a/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
+++ b/contracts/core/contracts/extensions/Forwarder/libs/LibConstants.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
-import "../../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "../../../tokens/EtherToken/IEtherToken.sol";
 import "../../../tokens/ERC20Token/IERC20Token.sol";
 
diff --git a/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol b/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
index 9e9e63e9b..78c31c8fc 100644
--- a/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
+++ b/contracts/core/contracts/extensions/OrderValidator/OrderValidator.sol
@@ -19,7 +19,7 @@
 pragma solidity 0.4.24;
 pragma experimental ABIEncoderV2;
 
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "../../tokens/ERC20Token/IERC20Token.sol";
 import "../../tokens/ERC721Token/IERC721Token.sol";
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetData.sol b/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetData.sol
deleted file mode 100644
index e2da68919..000000000
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetData.sol
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-// solhint-disable
-pragma solidity 0.4.24;
-pragma experimental ABIEncoderV2;
-
-
-// @dev Interface of the asset proxy's assetData.
-// The asset proxies take an ABI encoded `bytes assetData` as argument.
-// This argument is ABI encoded as one of the methods of this interface.
-interface IAssetData {
-
-    function ERC20Token(address tokenContract)
-        external;
-    
-    function ERC721Token(
-        address tokenContract,
-        uint256 tokenId
-    )
-        external;
-
-    function MultiAsset(
-        uint256[] amounts,
-        bytes[] nestedAssetData
-    )
-        external;
-    
-}
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetProxy.sol b/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetProxy.sol
deleted file mode 100644
index b25d2d75a..000000000
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAssetProxy.sol
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "./IAuthorizable.sol";
-
-
-contract IAssetProxy is
-    IAuthorizable
-{
-    /// @dev Transfers assets. Either succeeds or throws.
-    /// @param assetData Byte array encoded for the respective asset proxy.
-    /// @param from Address to transfer asset from.
-    /// @param to Address to transfer asset to.
-    /// @param amount Amount of asset to transfer.
-    function transferFrom(
-        bytes assetData,
-        address from,
-        address to,
-        uint256 amount
-    )
-        external;
-    
-    /// @dev Gets the proxy id associated with the proxy address.
-    /// @return Proxy id.
-    function getProxyId()
-        external
-        pure
-        returns (bytes4);
-}
diff --git a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAuthorizable.sol b/contracts/core/contracts/protocol/AssetProxy/interfaces/IAuthorizable.sol
deleted file mode 100644
index 96ee05dee..000000000
--- a/contracts/core/contracts/protocol/AssetProxy/interfaces/IAuthorizable.sol
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-import "@0x/contracts-utils/contracts/utils/Ownable/IOwnable.sol";
-
-
-contract IAuthorizable is
-    IOwnable
-{
-    /// @dev Authorizes an address.
-    /// @param target Address to authorize.
-    function addAuthorizedAddress(address target)
-        external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    function removeAuthorizedAddress(address target)
-        external;
-
-    /// @dev Removes authorizion of an address.
-    /// @param target Address to remove authorization from.
-    /// @param index Index of target in authorities array.
-    function removeAuthorizedAddressAtIndex(
-        address target,
-        uint256 index
-    )
-        external;
-    
-    /// @dev Gets all authorized addresses.
-    /// @return Array of authorized addresses.
-    function getAuthorizedAddresses()
-        external
-        view
-        returns (address[] memory);
-}
diff --git a/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol b/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
index d63fb7f6d..fe77048ce 100644
--- a/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
+++ b/contracts/core/contracts/protocol/AssetProxy/mixins/MAuthorizable.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/IAuthorizable.sol";
+import "@0x/contracts-interfaces/contracts/protocol/AssetProxy/IAuthorizable.sol";
 
 
 contract MAuthorizable is
diff --git a/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol b/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
index 02aeb4a13..36ab39b45 100644
--- a/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
+++ b/contracts/core/contracts/protocol/Exchange/MixinAssetProxyDispatcher.sol
@@ -20,7 +20,7 @@ pragma solidity 0.4.24;
 
 import "@0x/contracts-utils/contracts/utils/Ownable/Ownable.sol";
 import "./mixins/MAssetProxyDispatcher.sol";
-import "../AssetProxy/interfaces/IAssetProxy.sol";
+import "@0x/contracts-interfaces/contracts/protocol/AssetProxy/IAssetProxy.sol";
 
 
 contract MixinAssetProxyDispatcher is
diff --git a/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol b/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
index 711535aa8..80b4c0755 100644
--- a/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
+++ b/contracts/core/contracts/protocol/Exchange/MixinSignatureValidator.sol
@@ -22,8 +22,8 @@ import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "@0x/contracts-utils/contracts/utils/ReentrancyGuard/ReentrancyGuard.sol";
 import "./mixins/MSignatureValidator.sol";
 import "./mixins/MTransactions.sol";
-import "./interfaces/IWallet.sol";
-import "./interfaces/IValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWallet.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IValidator.sol";
 
 
 contract MixinSignatureValidator is
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol
deleted file mode 100644
index 8db8d6f6c..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IAssetProxyDispatcher.sol
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IAssetProxyDispatcher {
-
-    /// @dev Registers an asset proxy to its asset proxy id.
-    ///      Once an asset proxy is registered, it cannot be unregistered.
-    /// @param assetProxy Address of new asset proxy to register.
-    function registerAssetProxy(address assetProxy)
-        external;
-
-    /// @dev Gets an asset proxy.
-    /// @param assetProxyId Id of the asset proxy.
-    /// @return The asset proxy registered to assetProxyId. Returns 0x0 if no proxy is registered.
-    function getAssetProxy(bytes4 assetProxyId)
-        external
-        view
-        returns (address);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IExchange.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IExchange.sol
deleted file mode 100644
index b92abba04..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IExchange.sol
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-pragma experimental ABIEncoderV2;
-
-import "./IExchangeCore.sol";
-import "./IMatchOrders.sol";
-import "./ISignatureValidator.sol";
-import "./ITransactions.sol";
-import "./IAssetProxyDispatcher.sol";
-import "./IWrapperFunctions.sol";
-
-
-// solhint-disable no-empty-blocks
-contract IExchange is
-    IExchangeCore,
-    IMatchOrders,
-    ISignatureValidator,
-    ITransactions,
-    IAssetProxyDispatcher,
-    IWrapperFunctions
-{}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol
deleted file mode 100644
index 0da73529c..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IExchangeCore.sol
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
-import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-
-
-contract IExchangeCore {
-
-    /// @dev Cancels all orders created by makerAddress with a salt less than or equal to the targetOrderEpoch
-    ///      and senderAddress equal to msg.sender (or null address if msg.sender == makerAddress).
-    /// @param targetOrderEpoch Orders created with a salt less or equal to this value will be cancelled.
-    function cancelOrdersUpTo(uint256 targetOrderEpoch)
-        external;
-
-    /// @dev Fills the input order.
-    /// @param order Order struct containing order specifications.
-    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
-    /// @param signature Proof that order has been created by maker.
-    /// @return Amounts filled and fees paid by maker and taker.
-    function fillOrder(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount,
-        bytes memory signature
-    )
-        public
-        returns (LibFillResults.FillResults memory fillResults);
-
-    /// @dev After calling, the order can not be filled anymore.
-    /// @param order Order struct containing order specifications.
-    function cancelOrder(LibOrder.Order memory order)
-        public;
-
-    /// @dev Gets information about an order: status, hash, and amount filled.
-    /// @param order Order to gather information on.
-    /// @return OrderInfo Information about the order and its state.
-    ///                   See LibOrder.OrderInfo for a complete description.
-    function getOrderInfo(LibOrder.Order memory order)
-        public
-        view
-        returns (LibOrder.OrderInfo memory orderInfo);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol
deleted file mode 100644
index b88e158c3..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IMatchOrders.sol
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-pragma solidity 0.4.24;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
-import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-
-
-contract IMatchOrders {
-
-    /// @dev Match two complementary orders that have a profitable spread.
-    ///      Each order is filled at their respective price point. However, the calculations are
-    ///      carried out as though the orders are both being filled at the right order's price point.
-    ///      The profit made by the left order goes to the taker (who matched the two orders).
-    /// @param leftOrder First order to match.
-    /// @param rightOrder Second order to match.
-    /// @param leftSignature Proof that order was created by the left maker.
-    /// @param rightSignature Proof that order was created by the right maker.
-    /// @return matchedFillResults Amounts filled and fees paid by maker and taker of matched orders.
-    function matchOrders(
-        LibOrder.Order memory leftOrder,
-        LibOrder.Order memory rightOrder,
-        bytes memory leftSignature,
-        bytes memory rightSignature
-    )
-        public
-        returns (LibFillResults.MatchedFillResults memory matchedFillResults);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/ISignatureValidator.sol b/contracts/core/contracts/protocol/Exchange/interfaces/ISignatureValidator.sol
deleted file mode 100644
index 1fd0eccf0..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/ISignatureValidator.sol
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract ISignatureValidator {
-
-    /// @dev Approves a hash on-chain using any valid signature type.
-    ///      After presigning a hash, the preSign signature type will become valid for that hash and signer.
-    /// @param signerAddress Address that should have signed the given hash.
-    /// @param signature Proof that the hash has been signed by signer.
-    function preSign(
-        bytes32 hash,
-        address signerAddress,
-        bytes signature
-    )
-        external;
-    
-    /// @dev Approves/unnapproves a Validator contract to verify signatures on signer's behalf.
-    /// @param validatorAddress Address of Validator contract.
-    /// @param approval Approval or disapproval of  Validator contract.
-    function setSignatureValidatorApproval(
-        address validatorAddress,
-        bool approval
-    )
-        external;
-
-    /// @dev Verifies that a signature is valid.
-    /// @param hash Message hash that is signed.
-    /// @param signerAddress Address of signer.
-    /// @param signature Proof of signing.
-    /// @return Validity of order signature.
-    function isValidSignature(
-        bytes32 hash,
-        address signerAddress,
-        bytes memory signature
-    )
-        public
-        view
-        returns (bool isValid);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/ITransactions.sol b/contracts/core/contracts/protocol/Exchange/interfaces/ITransactions.sol
deleted file mode 100644
index 4446c55ce..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/ITransactions.sol
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-pragma solidity 0.4.24;
-
-
-contract ITransactions {
-
-    /// @dev Executes an exchange method call in the context of signer.
-    /// @param salt Arbitrary number to ensure uniqueness of transaction hash.
-    /// @param signerAddress Address of transaction signer.
-    /// @param data AbiV2 encoded calldata.
-    /// @param signature Proof of signer transaction by signer.
-    function executeTransaction(
-        uint256 salt,
-        address signerAddress,
-        bytes data,
-        bytes signature
-    )
-        external;
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IValidator.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IValidator.sol
deleted file mode 100644
index 2dd69100c..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IValidator.sol
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IValidator {
-
-    /// @dev Verifies that a signature is valid.
-    /// @param hash Message hash that is signed.
-    /// @param signerAddress Address that should have signed the given hash.
-    /// @param signature Proof of signing.
-    /// @return Validity of order signature.
-    function isValidSignature(
-        bytes32 hash,
-        address signerAddress,
-        bytes signature
-    )
-        external
-        view
-        returns (bool isValid);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IWallet.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IWallet.sol
deleted file mode 100644
index c97161ca6..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IWallet.sol
+++ /dev/null
@@ -1,35 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-
-
-contract IWallet {
-
-    /// @dev Verifies that a signature is valid.
-    /// @param hash Message hash that is signed.
-    /// @param signature Proof of signing.
-    /// @return Validity of order signature.
-    function isValidSignature(
-        bytes32 hash,
-        bytes signature
-    )
-        external
-        view
-        returns (bool isValid);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol b/contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol
deleted file mode 100644
index 833bb7e88..000000000
--- a/contracts/core/contracts/protocol/Exchange/interfaces/IWrapperFunctions.sol
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
-
-  Copyright 2018 ZeroEx Intl.
-
-  Licensed under the Apache License, Version 2.0 (the "License");
-  you may not use this file except in compliance with the License.
-  You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-  Unless required by applicable law or agreed to in writing, software
-  distributed under the License is distributed on an "AS IS" BASIS,
-  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-  See the License for the specific language governing permissions and
-  limitations under the License.
-
-*/
-
-pragma solidity 0.4.24;
-pragma experimental ABIEncoderV2;
-
-import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
-import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-
-
-contract IWrapperFunctions {
-
-    /// @dev Fills the input order. Reverts if exact takerAssetFillAmount not filled.
-    /// @param order LibOrder.Order struct containing order specifications.
-    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
-    /// @param signature Proof that order has been created by maker.
-    function fillOrKillOrder(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount,
-        bytes memory signature
-    )
-        public
-        returns (LibFillResults.FillResults memory fillResults);
-
-    /// @dev Fills an order with specified parameters and ECDSA signature.
-    ///      Returns false if the transaction would otherwise revert.
-    /// @param order LibOrder.Order struct containing order specifications.
-    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
-    /// @param signature Proof that order has been created by maker.
-    /// @return Amounts filled and fees paid by maker and taker.
-    function fillOrderNoThrow(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount,
-        bytes memory signature
-    )
-        public
-        returns (LibFillResults.FillResults memory fillResults);
-
-    /// @dev Synchronously executes multiple calls of fillOrder.
-    /// @param orders Array of order specifications.
-    /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders.
-    /// @param signatures Proofs that orders have been created by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function batchFillOrders(
-        LibOrder.Order[] memory orders,
-        uint256[] memory takerAssetFillAmounts,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously executes multiple calls of fillOrKill.
-    /// @param orders Array of order specifications.
-    /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders.
-    /// @param signatures Proofs that orders have been created by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function batchFillOrKillOrders(
-        LibOrder.Order[] memory orders,
-        uint256[] memory takerAssetFillAmounts,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Fills an order with specified parameters and ECDSA signature.
-    ///      Returns false if the transaction would otherwise revert.
-    /// @param orders Array of order specifications.
-    /// @param takerAssetFillAmounts Array of desired amounts of takerAsset to sell in orders.
-    /// @param signatures Proofs that orders have been created by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function batchFillOrdersNoThrow(
-        LibOrder.Order[] memory orders,
-        uint256[] memory takerAssetFillAmounts,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker.
-    /// @param orders Array of order specifications.
-    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
-    /// @param signatures Proofs that orders have been created by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function marketSellOrders(
-        LibOrder.Order[] memory orders,
-        uint256 takerAssetFillAmount,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously executes multiple calls of fillOrder until total amount of takerAsset is sold by taker.
-    ///      Returns false if the transaction would otherwise revert.
-    /// @param orders Array of order specifications.
-    /// @param takerAssetFillAmount Desired amount of takerAsset to sell.
-    /// @param signatures Proofs that orders have been signed by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function marketSellOrdersNoThrow(
-        LibOrder.Order[] memory orders,
-        uint256 takerAssetFillAmount,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously executes multiple calls of fillOrder until total amount of makerAsset is bought by taker.
-    /// @param orders Array of order specifications.
-    /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
-    /// @param signatures Proofs that orders have been signed by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function marketBuyOrders(
-        LibOrder.Order[] memory orders,
-        uint256 makerAssetFillAmount,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously executes multiple fill orders in a single transaction until total amount is bought by taker.
-    ///      Returns false if the transaction would otherwise revert.
-    /// @param orders Array of order specifications.
-    /// @param makerAssetFillAmount Desired amount of makerAsset to buy.
-    /// @param signatures Proofs that orders have been signed by makers.
-    /// @return Amounts filled and fees paid by makers and taker.
-    function marketBuyOrdersNoThrow(
-        LibOrder.Order[] memory orders,
-        uint256 makerAssetFillAmount,
-        bytes[] memory signatures
-    )
-        public
-        returns (LibFillResults.FillResults memory totalFillResults);
-
-    /// @dev Synchronously cancels multiple orders in a single transaction.
-    /// @param orders Array of order specifications.
-    function batchCancelOrders(LibOrder.Order[] memory orders)
-        public;
-
-    /// @dev Fetches information for all passed in orders
-    /// @param orders Array of order specifications.
-    /// @return Array of OrderInfo instances that correspond to each order.
-    function getOrdersInfo(LibOrder.Order[] memory orders)
-        public
-        view
-        returns (LibOrder.OrderInfo[] memory);
-}
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol b/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
index 0ddfca270..fe3d03326 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MAssetProxyDispatcher.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/IAssetProxyDispatcher.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IAssetProxyDispatcher.sol";
 
 
 contract MAssetProxyDispatcher is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol b/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
index 099bdcc33..215284900 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MExchangeCore.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IExchangeCore.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchangeCore.sol";
 
 
 contract MExchangeCore is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol b/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
index bb285de03..1eb4be329 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MMatchOrders.sol
@@ -20,7 +20,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IMatchOrders.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IMatchOrders.sol";
 
 
 contract MMatchOrders is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol b/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
index 1fe88b908..a933976d1 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MSignatureValidator.sol
@@ -18,7 +18,7 @@
 
 pragma solidity 0.4.24;
 
-import "../interfaces/ISignatureValidator.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/ISignatureValidator.sol";
 
 
 contract MSignatureValidator is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol b/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
index 4f61a4945..a6b0fdc85 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MTransactions.sol
@@ -17,7 +17,7 @@
 */
 pragma solidity 0.4.24;
 
-import "../interfaces/ITransactions.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/ITransactions.sol";
 
 
 contract MTransactions is
diff --git a/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol b/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
index 2d21bf057..101e7cb82 100644
--- a/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
+++ b/contracts/core/contracts/protocol/Exchange/mixins/MWrapperFunctions.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 import "@0x/contracts-libs/contracts/libs/LibFillResults.sol";
-import "../interfaces/IWrapperFunctions.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IWrapperFunctions.sol";
 
 
 contract MWrapperFunctions is 
diff --git a/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol b/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
index 8e077e3e8..d8c65929d 100644
--- a/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
+++ b/contracts/core/contracts/test/ReentrantERC20Token/ReentrantERC20Token.sol
@@ -21,7 +21,7 @@ pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-utils/contracts/utils/LibBytes/LibBytes.sol";
 import "../../tokens/ERC20Token/ERC20Token.sol";
-import "../../protocol/Exchange/interfaces/IExchange.sol";
+import "@0x/contracts-interfaces/contracts/protocol/Exchange/IExchange.sol";
 import "@0x/contracts-libs/contracts/libs/LibOrder.sol";
 
 
diff --git a/contracts/core/package.json b/contracts/core/package.json
index 43fa9370e..be2214177 100644
--- a/contracts/core/package.json
+++ b/contracts/core/package.json
@@ -33,7 +33,7 @@
         "lint-contracts": "solhint contracts/**/**/**/**/*.sol"
     },
     "config": {
-        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|IAssetData|IAssetProxy|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
+        "abis": "generated-artifacts/@(AssetProxyOwner|DummyERC20Token|DummyERC721Receiver|DummyERC721Token|DummyMultipleReturnERC20Token|DummyNoReturnERC20Token|DutchAuction|ERC20Token|ERC20Proxy|ERC721Token|ERC721Proxy|Forwarder|Exchange|ExchangeWrapper|InvalidERC721Receiver|MixinAuthorizable|MultiAssetProxy|OrderValidator|ReentrantERC20Token|TestAssetProxyOwner|TestAssetProxyDispatcher|TestConstants|TestExchangeInternals|TestLibBytes|TestSignatureValidator|TestStaticCallReceiver|Validator|Wallet|Whitelist|WETH9|ZRXToken).json"
     },
     "repository": {
         "type": "git",
@@ -77,6 +77,7 @@
         "@0x/contracts-multisig": "^1.0.0",
         "@0x/contracts-utils": "^1.0.0",
         "@0x/contracts-libs": "^1.0.0",
+        "@0x/contracts-interfaces": "^1.0.0",
         "@0x/types": "^1.3.0",
         "@0x/typescript-typings": "^3.0.4",
         "@0x/utils": "^2.0.6",
diff --git a/contracts/core/src/artifacts/index.ts b/contracts/core/src/artifacts/index.ts
index d578c36fe..1d868bae2 100644
--- a/contracts/core/src/artifacts/index.ts
+++ b/contracts/core/src/artifacts/index.ts
@@ -14,11 +14,7 @@ import * as ERC721Token from '../../generated-artifacts/ERC721Token.json';
 import * as Exchange from '../../generated-artifacts/Exchange.json';
 import * as ExchangeWrapper from '../../generated-artifacts/ExchangeWrapper.json';
 import * as Forwarder from '../../generated-artifacts/Forwarder.json';
-import * as IAssetData from '../../generated-artifacts/IAssetData.json';
-import * as IAssetProxy from '../../generated-artifacts/IAssetProxy.json';
 import * as InvalidERC721Receiver from '../../generated-artifacts/InvalidERC721Receiver.json';
-import * as IValidator from '../../generated-artifacts/IValidator.json';
-import * as IWallet from '../../generated-artifacts/IWallet.json';
 import * as MixinAuthorizable from '../../generated-artifacts/MixinAuthorizable.json';
 import * as MultiAssetProxy from '../../generated-artifacts/MultiAssetProxy.json';
 import * as OrderValidator from '../../generated-artifacts/OrderValidator.json';
@@ -49,10 +45,6 @@ export const artifacts = {
     Exchange: Exchange as ContractArtifact,
     ExchangeWrapper: ExchangeWrapper as ContractArtifact,
     Forwarder: Forwarder as ContractArtifact,
-    IAssetData: IAssetData as ContractArtifact,
-    IAssetProxy: IAssetProxy as ContractArtifact,
-    IValidator: IValidator as ContractArtifact,
-    IWallet: IWallet as ContractArtifact,
     InvalidERC721Receiver: InvalidERC721Receiver as ContractArtifact,
     MixinAuthorizable: MixinAuthorizable as ContractArtifact,
     MultiAssetProxy: MultiAssetProxy as ContractArtifact,
diff --git a/contracts/core/src/wrappers/index.ts b/contracts/core/src/wrappers/index.ts
index ed9d8ef47..92e2f6b9f 100644
--- a/contracts/core/src/wrappers/index.ts
+++ b/contracts/core/src/wrappers/index.ts
@@ -12,8 +12,6 @@ export * from '../../generated-wrappers/erc721_token';
 export * from '../../generated-wrappers/exchange';
 export * from '../../generated-wrappers/exchange_wrapper';
 export * from '../../generated-wrappers/forwarder';
-export * from '../../generated-wrappers/i_asset_data';
-export * from '../../generated-wrappers/i_asset_proxy';
 export * from '../../generated-wrappers/invalid_erc721_receiver';
 export * from '../../generated-wrappers/mixin_authorizable';
 export * from '../../generated-wrappers/order_validator';
diff --git a/contracts/core/test/asset_proxy/proxies.ts b/contracts/core/test/asset_proxy/proxies.ts
index 2527b0fbf..faa643924 100644
--- a/contracts/core/test/asset_proxy/proxies.ts
+++ b/contracts/core/test/asset_proxy/proxies.ts
@@ -1,3 +1,4 @@
+import { artifacts as interfacesArtifacts, IAssetDataContract, IAssetProxyContract } from '@0x/contracts-interfaces';
 import {
     chaiSetup,
     constants,
@@ -22,8 +23,6 @@ import { DummyMultipleReturnERC20TokenContract } from '../../generated-wrappers/
 import { DummyNoReturnERC20TokenContract } from '../../generated-wrappers/dummy_no_return_erc20_token';
 import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
 import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
-import { IAssetDataContract } from '../../generated-wrappers/i_asset_data';
-import { IAssetProxyContract } from '../../generated-wrappers/i_asset_proxy';
 import { MultiAssetProxyContract } from '../../generated-wrappers/multi_asset_proxy';
 import { artifacts } from '../../src/artifacts';
 import { ERC20Wrapper } from '../utils/erc20_wrapper';
@@ -33,12 +32,12 @@ chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const assetProxyInterface = new IAssetProxyContract(
-    artifacts.IAssetProxy.compilerOutput.abi,
+    interfacesArtifacts.IAssetProxy.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
 const assetDataInterface = new IAssetDataContract(
-    artifacts.IAssetData.compilerOutput.abi,
+    interfacesArtifacts.IAssetData.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
diff --git a/contracts/core/test/exchange/core.ts b/contracts/core/test/exchange/core.ts
index fd6b9ee6b..45eae0f22 100644
--- a/contracts/core/test/exchange/core.ts
+++ b/contracts/core/test/exchange/core.ts
@@ -1,3 +1,4 @@
+import { artifacts as interfacesArtifacts, IAssetDataContract } from '@0x/contracts-interfaces';
 import {
     chaiSetup,
     constants,
@@ -27,7 +28,6 @@ import { DummyNoReturnERC20TokenContract } from '../../generated-wrappers/dummy_
 import { ERC20ProxyContract } from '../../generated-wrappers/erc20_proxy';
 import { ERC721ProxyContract } from '../../generated-wrappers/erc721_proxy';
 import { ExchangeCancelEventArgs, ExchangeContract } from '../../generated-wrappers/exchange';
-import { IAssetDataContract } from '../../generated-wrappers/i_asset_data';
 import { MultiAssetProxyContract } from '../../generated-wrappers/multi_asset_proxy';
 import { ReentrantERC20TokenContract } from '../../generated-wrappers/reentrant_erc20_token';
 import { TestStaticCallReceiverContract } from '../../generated-wrappers/test_static_call_receiver';
@@ -40,7 +40,7 @@ chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const assetDataInterface = new IAssetDataContract(
-    artifacts.IAssetData.compilerOutput.abi,
+    interfacesArtifacts.IAssetData.compilerOutput.abi,
     constants.NULL_ADDRESS,
     provider,
 );
diff --git a/contracts/core/tsconfig.json b/contracts/core/tsconfig.json
index f2f3c4e97..ca3e6c15f 100644
--- a/contracts/core/tsconfig.json
+++ b/contracts/core/tsconfig.json
@@ -21,11 +21,6 @@
         "./generated-artifacts/Exchange.json",
         "./generated-artifacts/ExchangeWrapper.json",
         "./generated-artifacts/Forwarder.json",
-        "./generated-artifacts/IAssetData.json",
-        "./generated-artifacts/IAssetProxy.json",
-        "./generated-artifacts/IValidator.json",
-        "./generated-artifacts/IWallet.json",
-        "./generated-artifacts/InvalidERC721Receiver.json",
         "./generated-artifacts/MixinAuthorizable.json",
         "./generated-artifacts/MultiAssetProxy.json",
         "./generated-artifacts/OrderValidator.json",
@@ -39,6 +34,7 @@
         "./generated-artifacts/WETH9.json",
         "./generated-artifacts/Wallet.json",
         "./generated-artifacts/Whitelist.json",
+        "./generated-artifacts/InvalidERC721Receiver.json",
         "./generated-artifacts/ZRXToken.json"
     ],
     "exclude": ["./deploy/solc/solc_bin"]