Update dependency packages

23 files changed, 0 insertions, 1761 deletions

diff --git a/contracts/libs/CHANGELOG.json b/contracts/libs/CHANGELOG.json
deleted file mode 100644
index 724ab1e4a..000000000
--- a/contracts/libs/CHANGELOG.json
+++ /dev/null
@@ -1,56 +0,0 @@
-[
-    {
-        "version": "2.0.0",
-        "changes": [
-            {
-                "note": "Upgrade the bignumber.js to v8.0.2",
-                "pr": 1517
-            }
-        ]
-    },
-    {
-        "timestamp": 1547747677,
-        "version": "1.0.6",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1547561734,
-        "version": "1.0.5",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1547225310,
-        "version": "1.0.4",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1547040760,
-        "version": "1.0.3",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    },
-    {
-        "timestamp": 1544741676,
-        "version": "1.0.2",
-        "changes": [
-            {
-                "note": "Dependencies updated"
-            }
-        ]
-    }
-]
diff --git a/contracts/libs/CHANGELOG.md b/contracts/libs/CHANGELOG.md
deleted file mode 100644
index 59d0804da..000000000
--- a/contracts/libs/CHANGELOG.md
+++ /dev/null
@@ -1,26 +0,0 @@
-<!--
-changelogUtils.file is auto-generated using the monorepo-scripts package. Don't edit directly.
-Edit the package's CHANGELOG.json file only.
--->
-
-CHANGELOG
-
-## v1.0.6 - _January 17, 2019_
-
-    * Dependencies updated
-
-## v1.0.5 - _January 15, 2019_
-
-    * Dependencies updated
-
-## v1.0.4 - _January 11, 2019_
-
-    * Dependencies updated
-
-## v1.0.3 - _January 9, 2019_
-
-    * Dependencies updated
-
-## v1.0.2 - _December 13, 2018_
-
-    * Dependencies updated
diff --git a/contracts/libs/README.md b/contracts/libs/README.md
deleted file mode 100644
index cfa631679..000000000
--- a/contracts/libs/README.md
+++ /dev/null
@@ -1,70 +0,0 @@
-## Contracts libs
-
-Smart contracts libs used in the 0x protocol.
-
-## Usage
-
-Contracts can be found in the [contracts](./contracts) directory. The contents of this directory are broken down into the following subdirectories:
-
--   [libs](./contracts/protocol)
-    -   This directory contains the libs.
--   [test](./contracts/test)
-    -   This directory contains mocks and other contracts that are used solely for testing contracts within the other directories.
-
-## Contributing
-
-We strongly recommend that the community help us make improvements and determine the future direction of the protocol. To report bugs within this package, please create an issue in this repository.
-
-For proposals regarding the 0x protocol's smart contract architecture, message format, or additional functionality, go to the [0x Improvement Proposals (ZEIPs)](https://github.com/0xProject/ZEIPs) repository and follow the contribution guidelines provided therein.
-
-Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
-
-### Install Dependencies
-
-If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
-
-```bash
-yarn config set workspaces-experimental true
-```
-
-Then install dependencies
-
-```bash
-yarn install
-```
-
-### Build
-
-To build this package and all other monorepo packages that it depends on, run the following from the monorepo root directory:
-
-```bash
-PKG=@0x/contracts-libs yarn build
-```
-
-Or continuously rebuild on change:
-
-```bash
-PKG=@0x/contracts-libs yarn watch
-```
-
-### Clean
-
-```bash
-yarn clean
-```
-
-### Lint
-
-```bash
-yarn lint
-```
-
-### Run Tests
-
-```bash
-yarn test
-```
-
-#### Testing options
-
-Contracts testing options like coverage, profiling, revert traces or backing node choosing - are described [here](../TESTING.md).
diff --git a/contracts/libs/compiler.json b/contracts/libs/compiler.json
deleted file mode 100644
index 349d3063b..000000000
--- a/contracts/libs/compiler.json
+++ /dev/null
@@ -1,31 +0,0 @@
-{
-    "artifactsDir": "./generated-artifacts",
-    "contractsDir": "./contracts",
-    "compilerSettings": {
-        "optimizer": {
-            "enabled": true,
-            "runs": 1000000
-        },
-        "outputSelection": {
-            "*": {
-                "*": [
-                    "abi",
-                    "evm.bytecode.object",
-                    "evm.bytecode.sourceMap",
-                    "evm.deployedBytecode.object",
-                    "evm.deployedBytecode.sourceMap"
-                ]
-            }
-        }
-    },
-    "contracts": [
-        "TestLibs",
-        "LibOrder",
-        "LibMath",
-        "LibFillResults",
-        "LibAbiEncoder",
-        "LibEIP712",
-        "LibAssetProxyErrors",
-        "LibConstants"
-    ]
-}
diff --git a/contracts/libs/contracts/libs/LibAbiEncoder.sol b/contracts/libs/contracts/libs/LibAbiEncoder.sol
deleted file mode 100644
index 5422bfeec..000000000
--- a/contracts/libs/contracts/libs/LibAbiEncoder.sol
+++ /dev/null
@@ -1,215 +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 "./LibOrder.sol";
-
-
-contract LibAbiEncoder {
-
-    /// @dev ABI encodes calldata for `fillOrder`.
-    /// @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 ABI encoded calldata for `fillOrder`.
-    function abiEncodeFillOrder(
-        LibOrder.Order memory order,
-        uint256 takerAssetFillAmount,
-        bytes memory signature
-    )
-        internal
-        pure
-        returns (bytes memory fillOrderCalldata)
-    {
-        // We need to call MExchangeCore.fillOrder using a delegatecall in
-        // assembly so that we can intercept a call that throws. For this, we
-        // need the input encoded in memory in the Ethereum ABIv2 format [1].
-
-        // | Area     | Offset | Length  | Contents                                    |
-        // | -------- |--------|---------|-------------------------------------------- |
-        // | Header   | 0x00   | 4       | function selector                           |
-        // | Params   |        | 3 * 32  | function parameters:                        |
-        // |          | 0x00   |         |   1. offset to order (*)                    |
-        // |          | 0x20   |         |   2. takerAssetFillAmount                   |
-        // |          | 0x40   |         |   3. offset to signature (*)                |
-        // | Data     |        | 12 * 32 | order:                                      |
-        // |          | 0x000  |         |   1.  senderAddress                         |
-        // |          | 0x020  |         |   2.  makerAddress                          |
-        // |          | 0x040  |         |   3.  takerAddress                          |
-        // |          | 0x060  |         |   4.  feeRecipientAddress                   |
-        // |          | 0x080  |         |   5.  makerAssetAmount                      |
-        // |          | 0x0A0  |         |   6.  takerAssetAmount                      |
-        // |          | 0x0C0  |         |   7.  makerFeeAmount                        |
-        // |          | 0x0E0  |         |   8.  takerFeeAmount                        |
-        // |          | 0x100  |         |   9.  expirationTimeSeconds                 |
-        // |          | 0x120  |         |   10. salt                                  |
-        // |          | 0x140  |         |   11. Offset to makerAssetData (*)          |
-        // |          | 0x160  |         |   12. Offset to takerAssetData (*)          |
-        // |          | 0x180  | 32      | makerAssetData Length                       |
-        // |          | 0x1A0  | **      | makerAssetData Contents                     |
-        // |          | 0x1C0  | 32      | takerAssetData Length                       |
-        // |          | 0x1E0  | **      | takerAssetData Contents                     |
-        // |          | 0x200  | 32      | signature Length                            |
-        // |          | 0x220  | **      | signature Contents                          |
-
-        // * Offsets are calculated from the beginning of the current area: Header, Params, Data:
-        //     An offset stored in the Params area is calculated from the beginning of the Params section.
-        //     An offset stored in the Data area is calculated from the beginning of the Data section.
-
-        // ** The length of dynamic array contents are stored in the field immediately preceeding the contents.
-
-        // [1]: https://solidity.readthedocs.io/en/develop/abi-spec.html
-
-        assembly {
-
-            // Areas below may use the following variables:
-            //   1. <area>Start   -- Start of this area in memory
-            //   2. <area>End     -- End of this area in memory. This value may
-            //                       be precomputed (before writing contents),
-            //                       or it may be computed as contents are written.
-            //   3. <area>Offset  -- Current offset into area. If an area's End
-            //                       is precomputed, this variable tracks the
-            //                       offsets of contents as they are written.
-
-            /////// Setup Header Area ///////
-            // Load free memory pointer
-            fillOrderCalldata := mload(0x40)
-            // bytes4(keccak256("fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)"))
-            // = 0xb4be83d5
-            // Leave 0x20 bytes to store the length
-            mstore(add(fillOrderCalldata, 0x20), 0xb4be83d500000000000000000000000000000000000000000000000000000000)
-            let headerAreaEnd := add(fillOrderCalldata, 0x24)
-
-            /////// Setup Params Area ///////
-            // This area is preallocated and written to later.
-            // This is because we need to fill in offsets that have not yet been calculated.
-            let paramsAreaStart := headerAreaEnd
-            let paramsAreaEnd := add(paramsAreaStart, 0x60)
-            let paramsAreaOffset := paramsAreaStart
-
-            /////// Setup Data Area ///////
-            let dataAreaStart := paramsAreaEnd
-            let dataAreaEnd := dataAreaStart
-
-            // Offset from the source data we're reading from
-            let sourceOffset := order
-            // arrayLenBytes and arrayLenWords track the length of a dynamically-allocated bytes array.
-            let arrayLenBytes := 0
-            let arrayLenWords := 0
-
-            /////// Write order Struct ///////
-            // Write memory location of Order, relative to the start of the
-            // parameter list, then increment the paramsAreaOffset respectively.
-            mstore(paramsAreaOffset, sub(dataAreaEnd, paramsAreaStart))
-            paramsAreaOffset := add(paramsAreaOffset, 0x20)
-
-            // Write values for each field in the order
-            // It would be nice to use a loop, but we save on gas by writing
-            // the stores sequentially.
-            mstore(dataAreaEnd, mload(sourceOffset))                            // makerAddress
-            mstore(add(dataAreaEnd, 0x20), mload(add(sourceOffset, 0x20)))      // takerAddress
-            mstore(add(dataAreaEnd, 0x40), mload(add(sourceOffset, 0x40)))      // feeRecipientAddress
-            mstore(add(dataAreaEnd, 0x60), mload(add(sourceOffset, 0x60)))      // senderAddress
-            mstore(add(dataAreaEnd, 0x80), mload(add(sourceOffset, 0x80)))      // makerAssetAmount
-            mstore(add(dataAreaEnd, 0xA0), mload(add(sourceOffset, 0xA0)))      // takerAssetAmount
-            mstore(add(dataAreaEnd, 0xC0), mload(add(sourceOffset, 0xC0)))      // makerFeeAmount
-            mstore(add(dataAreaEnd, 0xE0), mload(add(sourceOffset, 0xE0)))      // takerFeeAmount
-            mstore(add(dataAreaEnd, 0x100), mload(add(sourceOffset, 0x100)))    // expirationTimeSeconds
-            mstore(add(dataAreaEnd, 0x120), mload(add(sourceOffset, 0x120)))    // salt
-            mstore(add(dataAreaEnd, 0x140), mload(add(sourceOffset, 0x140)))    // Offset to makerAssetData
-            mstore(add(dataAreaEnd, 0x160), mload(add(sourceOffset, 0x160)))    // Offset to takerAssetData
-            dataAreaEnd := add(dataAreaEnd, 0x180)
-            sourceOffset := add(sourceOffset, 0x180)
-
-            // Write offset to <order.makerAssetData>
-            mstore(add(dataAreaStart, mul(10, 0x20)), sub(dataAreaEnd, dataAreaStart))
-
-            // Calculate length of <order.makerAssetData>
-            sourceOffset := mload(add(order, 0x140)) // makerAssetData
-            arrayLenBytes := mload(sourceOffset)
-            sourceOffset := add(sourceOffset, 0x20)
-            arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20)
-
-            // Write length of <order.makerAssetData>
-            mstore(dataAreaEnd, arrayLenBytes)
-            dataAreaEnd := add(dataAreaEnd, 0x20)
-
-            // Write contents of <order.makerAssetData>
-            for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} {
-                mstore(dataAreaEnd, mload(sourceOffset))
-                dataAreaEnd := add(dataAreaEnd, 0x20)
-                sourceOffset := add(sourceOffset, 0x20)
-            }
-
-            // Write offset to <order.takerAssetData>
-            mstore(add(dataAreaStart, mul(11, 0x20)), sub(dataAreaEnd, dataAreaStart))
-
-            // Calculate length of <order.takerAssetData>
-            sourceOffset := mload(add(order, 0x160)) // takerAssetData
-            arrayLenBytes := mload(sourceOffset)
-            sourceOffset := add(sourceOffset, 0x20)
-            arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20)
-
-            // Write length of <order.takerAssetData>
-            mstore(dataAreaEnd, arrayLenBytes)
-            dataAreaEnd := add(dataAreaEnd, 0x20)
-
-            // Write contents of  <order.takerAssetData>
-            for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} {
-                mstore(dataAreaEnd, mload(sourceOffset))
-                dataAreaEnd := add(dataAreaEnd, 0x20)
-                sourceOffset := add(sourceOffset, 0x20)
-            }
-
-            /////// Write takerAssetFillAmount ///////
-            mstore(paramsAreaOffset, takerAssetFillAmount)
-            paramsAreaOffset := add(paramsAreaOffset, 0x20)
-
-            /////// Write signature ///////
-            // Write offset to paramsArea
-            mstore(paramsAreaOffset, sub(dataAreaEnd, paramsAreaStart))
-
-            // Calculate length of signature
-            sourceOffset := signature
-            arrayLenBytes := mload(sourceOffset)
-            sourceOffset := add(sourceOffset, 0x20)
-            arrayLenWords := div(add(arrayLenBytes, 0x1F), 0x20)
-
-            // Write length of signature
-            mstore(dataAreaEnd, arrayLenBytes)
-            dataAreaEnd := add(dataAreaEnd, 0x20)
-
-            // Write contents of signature
-            for {let i := 0} lt(i, arrayLenWords) {i := add(i, 1)} {
-                mstore(dataAreaEnd, mload(sourceOffset))
-                dataAreaEnd := add(dataAreaEnd, 0x20)
-                sourceOffset := add(sourceOffset, 0x20)
-            }
-
-            // Set length of calldata
-            mstore(fillOrderCalldata, sub(dataAreaEnd, add(fillOrderCalldata, 0x20)))
-
-            // Increment free memory pointer
-            mstore(0x40, dataAreaEnd)
-        }
-
-        return fillOrderCalldata;
-    }
-}
diff --git a/contracts/libs/contracts/libs/LibAddressArray.sol b/contracts/libs/contracts/libs/LibAddressArray.sol
deleted file mode 100644
index 997ce85fa..000000000
--- a/contracts/libs/contracts/libs/LibAddressArray.sol
+++ /dev/null
@@ -1,84 +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/LibBytes/LibBytes.sol";
-
-
-library LibAddressArray {
-
-    /// @dev Append a new address to an array of addresses.
-    ///      The `addressArray` may need to be reallocated to make space
-    ///      for the new address. Because of this we return the resulting
-    ///      memory location of `addressArray`.
-    /// @param addressToAppend  Address to append.
-    /// @return Array of addresses: [... addressArray, addressToAppend]
-    function append(address[] memory addressArray, address addressToAppend) 
-        internal pure
-        returns (address[])
-    {
-        // Get stats on address array and free memory
-        uint256 freeMemPtr = 0;
-        uint256 addressArrayBeginPtr = 0;
-        uint256 addressArrayEndPtr = 0;
-        uint256 addressArrayLength = addressArray.length;
-        uint256 addressArrayMemSizeInBytes = 32 + (32 * addressArrayLength);
-        assembly {
-            freeMemPtr := mload(0x40)
-            addressArrayBeginPtr := addressArray
-            addressArrayEndPtr := add(addressArray, addressArrayMemSizeInBytes)
-        }
-
-        // Cases for `freeMemPtr`:
-        //  `freeMemPtr` == `addressArrayEndPtr`: Nothing occupies memory after `addressArray`
-        //  `freeMemPtr` > `addressArrayEndPtr`: Some value occupies memory after `addressArray`
-        //  `freeMemPtr` < `addressArrayEndPtr`: Memory has not been managed properly.
-        require(
-            freeMemPtr >= addressArrayEndPtr,
-            "INVALID_FREE_MEMORY_PTR"
-        );
-
-        // If free memory begins at the end of `addressArray`
-        // then we can append `addressToAppend` directly.
-        // Otherwise, we must copy the array to free memory
-        // before appending new values to it.
-        if (freeMemPtr > addressArrayEndPtr) {
-            LibBytes.memCopy(freeMemPtr, addressArrayBeginPtr, addressArrayMemSizeInBytes);
-            assembly {
-                addressArray := freeMemPtr
-                addressArrayBeginPtr := addressArray
-            }
-        }
-
-        // Append `addressToAppend`
-        addressArrayLength += 1;
-        addressArrayMemSizeInBytes += 32;
-        addressArrayEndPtr = addressArrayBeginPtr + addressArrayMemSizeInBytes;
-        freeMemPtr = addressArrayEndPtr;
-        assembly {
-            // Store new array length
-            mstore(addressArray, addressArrayLength)
-
-            // Update `freeMemPtr`
-            mstore(0x40, freeMemPtr)
-        }
-        addressArray[addressArrayLength - 1] = addressToAppend;
-        return addressArray;
-    }
-}
diff --git a/contracts/libs/contracts/libs/LibAssetProxyErrors.sol b/contracts/libs/contracts/libs/LibAssetProxyErrors.sol
deleted file mode 100644
index 96c48b5e3..000000000
--- a/contracts/libs/contracts/libs/LibAssetProxyErrors.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.
-
-*/
-
-// solhint-disable
-pragma solidity ^0.4.24;
-
-
-/// @dev This contract documents the revert reasons used in the AssetProxy contracts.
-/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
-contract LibAssetProxyErrors {
-
-    /// Authorizable errors ///
-    string constant SENDER_NOT_AUTHORIZED = "SENDER_NOT_AUTHORIZED";                        // Sender not authorized to call this method.
-    string constant TARGET_NOT_AUTHORIZED = "TARGET_NOT_AUTHORIZED";                        // Target address not authorized to call this method.
-    string constant TARGET_ALREADY_AUTHORIZED = "TARGET_ALREADY_AUTHORIZED";                // Target address must not already be authorized.
-    string constant INDEX_OUT_OF_BOUNDS = "INDEX_OUT_OF_BOUNDS";                            // Specified array index is out of bounds.
-    string constant AUTHORIZED_ADDRESS_MISMATCH = "AUTHORIZED_ADDRESS_MISMATCH";            // Address at index does not match given target address.
-
-    /// Transfer errors ///
-    string constant INVALID_AMOUNT = "INVALID_AMOUNT";                                      // Transfer amount must equal 1.
-    string constant TRANSFER_FAILED = "TRANSFER_FAILED";                                    // Transfer failed.
-    string constant LENGTH_GREATER_THAN_131_REQUIRED = "LENGTH_GREATER_THAN_131_REQUIRED";  // Byte array must have a length greater than 0.
-}
diff --git a/contracts/libs/contracts/libs/LibConstants.sol b/contracts/libs/contracts/libs/LibConstants.sol
deleted file mode 100644
index 3efa3e1b3..000000000
--- a/contracts/libs/contracts/libs/LibConstants.sol
+++ /dev/null
@@ -1,49 +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;
-
-
-// solhint-disable max-line-length
-contract LibConstants {
-   
-    // Asset data for ZRX token. Used for fee transfers.
-    // @TODO: Hardcode constant when we deploy. Currently 
-    //        not constant to make testing easier.
-
-    // The proxyId for ZRX_ASSET_DATA is bytes4(keccak256("ERC20Token(address)")) = 0xf47261b0
-    
-    // Kovan ZRX address is 0x6ff6c0ff1d68b964901f986d4c9fa3ac68346570.
-    // The ABI encoded proxyId and address is 0xf47261b00000000000000000000000006ff6c0ff1d68b964901f986d4c9fa3ac68346570
-    // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x6f\xf6\xc0\xff\x1d\x68\xb9\x64\x90\x1f\x98\x6d\x4c\x9f\xa3\xac\x68\x34\x65\x70";
-    
-    // Mainnet ZRX address is 0xe41d2489571d322189246dafa5ebde1f4699f498.
-    // The ABI encoded proxyId and address is 0xf47261b0000000000000000000000000e41d2489571d322189246dafa5ebde1f4699f498
-    // bytes constant public ZRX_ASSET_DATA = "\xf4\x72\x61\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xe4\x1d\x24\x89\x57\x1d\x32\x21\x89\x24\x6d\xaf\xa5\xeb\xde\x1f\x46\x99\xf4\x98";
-    
-    // solhint-disable-next-line var-name-mixedcase
-    bytes public ZRX_ASSET_DATA;
-
-    // @TODO: Remove when we deploy.
-    constructor (bytes memory zrxAssetData)
-        public
-    {
-        ZRX_ASSET_DATA = zrxAssetData;
-    }
-}
-// solhint-enable max-line-length
diff --git a/contracts/libs/contracts/libs/LibEIP712.sol b/contracts/libs/contracts/libs/LibEIP712.sol
deleted file mode 100644
index 3a85ab3c0..000000000
--- a/contracts/libs/contracts/libs/LibEIP712.sol
+++ /dev/null
@@ -1,87 +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 LibEIP712 {
-
-    // EIP191 header for EIP712 prefix
-    string constant internal EIP191_HEADER = "\x19\x01";
-
-    // EIP712 Domain Name value
-    string constant internal EIP712_DOMAIN_NAME = "0x Protocol";
-
-    // EIP712 Domain Version value
-    string constant internal EIP712_DOMAIN_VERSION = "2";
-
-    // Hash of the EIP712 Domain Separator Schema
-    bytes32 constant internal EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH = keccak256(abi.encodePacked(
-        "EIP712Domain(",
-        "string name,",
-        "string version,",
-        "address verifyingContract",
-        ")"
-    ));
-
-    // Hash of the EIP712 Domain Separator data
-    // solhint-disable-next-line var-name-mixedcase
-    bytes32 public EIP712_DOMAIN_HASH;
-
-    constructor ()
-        public
-    {
-        EIP712_DOMAIN_HASH = keccak256(abi.encodePacked(
-            EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH,
-            keccak256(bytes(EIP712_DOMAIN_NAME)),
-            keccak256(bytes(EIP712_DOMAIN_VERSION)),
-            bytes32(address(this))
-        ));
-    }
-
-    /// @dev Calculates EIP712 encoding for a hash struct in this EIP712 Domain.
-    /// @param hashStruct The EIP712 hash struct.
-    /// @return EIP712 hash applied to this EIP712 Domain.
-    function hashEIP712Message(bytes32 hashStruct)
-        internal
-        view
-        returns (bytes32 result)
-    {
-        bytes32 eip712DomainHash = EIP712_DOMAIN_HASH;
-
-        // Assembly for more efficient computing:
-        // keccak256(abi.encodePacked(
-        //     EIP191_HEADER,
-        //     EIP712_DOMAIN_HASH,
-        //     hashStruct    
-        // ));
-
-        assembly {
-            // Load free memory pointer
-            let memPtr := mload(64)
-
-            mstore(memPtr, 0x1901000000000000000000000000000000000000000000000000000000000000)  // EIP191 header
-            mstore(add(memPtr, 2), eip712DomainHash)                                            // EIP712 domain hash
-            mstore(add(memPtr, 34), hashStruct)                                                 // Hash of struct
-
-            // Compute hash
-            result := keccak256(memPtr, 66)
-        }
-        return result;
-    }
-}
diff --git a/contracts/libs/contracts/libs/LibExchangeErrors.sol b/contracts/libs/contracts/libs/LibExchangeErrors.sol
deleted file mode 100644
index a160242c9..000000000
--- a/contracts/libs/contracts/libs/LibExchangeErrors.sol
+++ /dev/null
@@ -1,70 +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;
-
-
-/// @dev This contract documents the revert reasons used in the Exchange contract.
-/// This contract is intended to serve as a reference, but is not actually used for efficiency reasons.
-contract LibExchangeErrors {
-
-    /// Order validation errors ///
-    string constant ORDER_UNFILLABLE = "ORDER_UNFILLABLE";                              // Order cannot be filled.
-    string constant INVALID_MAKER = "INVALID_MAKER";                                    // Invalid makerAddress.
-    string constant INVALID_TAKER = "INVALID_TAKER";                                    // Invalid takerAddress.
-    string constant INVALID_SENDER = "INVALID_SENDER";                                  // Invalid `msg.sender`.
-    string constant INVALID_ORDER_SIGNATURE = "INVALID_ORDER_SIGNATURE";                // Signature validation failed. 
-    
-    /// fillOrder validation errors ///
-    string constant INVALID_TAKER_AMOUNT = "INVALID_TAKER_AMOUNT";                      // takerAssetFillAmount cannot equal 0.
-    string constant ROUNDING_ERROR = "ROUNDING_ERROR";                                  // Rounding error greater than 0.1% of takerAssetFillAmount. 
-    
-    /// Signature validation errors ///
-    string constant INVALID_SIGNATURE = "INVALID_SIGNATURE";                            // Signature validation failed. 
-    string constant SIGNATURE_ILLEGAL = "SIGNATURE_ILLEGAL";                            // Signature type is illegal.
-    string constant SIGNATURE_UNSUPPORTED = "SIGNATURE_UNSUPPORTED";                    // Signature type unsupported.
-    
-    /// cancelOrdersUptTo errors ///
-    string constant INVALID_NEW_ORDER_EPOCH = "INVALID_NEW_ORDER_EPOCH";                // Specified salt must be greater than or equal to existing orderEpoch.
-
-    /// fillOrKillOrder errors ///
-    string constant COMPLETE_FILL_FAILED = "COMPLETE_FILL_FAILED";                      // Desired takerAssetFillAmount could not be completely filled. 
-
-    /// matchOrders errors ///
-    string constant NEGATIVE_SPREAD_REQUIRED = "NEGATIVE_SPREAD_REQUIRED";              // Matched orders must have a negative spread.
-
-    /// Transaction errors ///
-    string constant REENTRANCY_ILLEGAL = "REENTRANCY_ILLEGAL";                          // Recursive reentrancy is not allowed. 
-    string constant INVALID_TX_HASH = "INVALID_TX_HASH";                                // Transaction has already been executed. 
-    string constant INVALID_TX_SIGNATURE = "INVALID_TX_SIGNATURE";                      // Signature validation failed. 
-    string constant FAILED_EXECUTION = "FAILED_EXECUTION";                              // Transaction execution failed. 
-    
-    /// registerAssetProxy errors ///
-    string constant ASSET_PROXY_ALREADY_EXISTS = "ASSET_PROXY_ALREADY_EXISTS";          // AssetProxy with same id already exists.
-
-    /// dispatchTransferFrom errors ///
-    string constant ASSET_PROXY_DOES_NOT_EXIST = "ASSET_PROXY_DOES_NOT_EXIST";          // No assetProxy registered at given id.
-    string constant TRANSFER_FAILED = "TRANSFER_FAILED";                                // Asset transfer unsuccesful.
-
-    /// Length validation errors ///
-    string constant LENGTH_GREATER_THAN_0_REQUIRED = "LENGTH_GREATER_THAN_0_REQUIRED";  // Byte array must have a length greater than 0.
-    string constant LENGTH_GREATER_THAN_3_REQUIRED = "LENGTH_GREATER_THAN_3_REQUIRED";  // Byte array must have a length greater than 3.
-    string constant LENGTH_0_REQUIRED = "LENGTH_0_REQUIRED";                            // Byte array must have a length of 0.
-    string constant LENGTH_65_REQUIRED = "LENGTH_65_REQUIRED";                          // Byte array must have a length of 65.
-}
diff --git a/contracts/libs/contracts/libs/LibExchangeSelectors.sol b/contracts/libs/contracts/libs/LibExchangeSelectors.sol
deleted file mode 100644
index 71640c609..000000000
--- a/contracts/libs/contracts/libs/LibExchangeSelectors.sol
+++ /dev/null
@@ -1,152 +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 LibExchangeSelectors {
-
-    // solhint-disable max-line-length
-    // allowedValidators
-    bytes4 constant public ALLOWED_VALIDATORS_SELECTOR = 0x7b8e3514;
-    bytes4 constant public ALLOWED_VALIDATORS_SELECTOR_GENERATOR = bytes4(keccak256("allowedValidators(address,address)"));
-
-    // assetProxies
-    bytes4 constant public ASSET_PROXIES_SELECTOR = 0x3fd3c997;
-    bytes4 constant public ASSET_PROXIES_SELECTOR_GENERATOR = bytes4(keccak256("assetProxies(bytes4)"));
-
-    // batchCancelOrders
-    bytes4 constant public BATCH_CANCEL_ORDERS_SELECTOR = 0x4ac14782;
-    bytes4 constant public BATCH_CANCEL_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("batchCancelOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])"));
-
-    // batchFillOrKillOrders
-    bytes4 constant public BATCH_FILL_OR_KILL_ORDERS_SELECTOR = 0x4d0ae546;
-    bytes4 constant public BATCH_FILL_OR_KILL_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("batchFillOrKillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])"));
-
-    // batchFillOrders
-    bytes4 constant public BATCH_FILL_ORDERS_SELECTOR = 0x297bb70b;
-    bytes4 constant public BATCH_FILL_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("batchFillOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])"));
-
-    // batchFillOrdersNoThrow
-    bytes4 constant public BATCH_FILL_ORDERS_NO_THROW_SELECTOR = 0x50dde190;
-    bytes4 constant public BATCH_FILL_ORDERS_NO_THROW_SELECTOR_GENERATOR = bytes4(keccak256("batchFillOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256[],bytes[])"));
-
-    // cancelOrder
-    bytes4 constant public CANCEL_ORDER_SELECTOR = 0xd46b02c3;
-    bytes4 constant public CANCEL_ORDER_SELECTOR_GENERATOR = bytes4(keccak256("cancelOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))"));
-
-    // cancelOrdersUpTo
-    bytes4 constant public CANCEL_ORDERS_UP_TO_SELECTOR = 0x4f9559b1;
-    bytes4 constant public CANCEL_ORDERS_UP_TO_SELECTOR_GENERATOR = bytes4(keccak256("cancelOrdersUpTo(uint256)"));
-
-    // cancelled
-    bytes4 constant public CANCELLED_SELECTOR = 0x2ac12622;
-    bytes4 constant public CANCELLED_SELECTOR_GENERATOR = bytes4(keccak256("cancelled(bytes32)"));
-
-    // currentContextAddress
-    bytes4 constant public CURRENT_CONTEXT_ADDRESS_SELECTOR = 0xeea086ba;
-    bytes4 constant public CURRENT_CONTEXT_ADDRESS_SELECTOR_GENERATOR = bytes4(keccak256("currentContextAddress()"));
-
-    // executeTransaction
-    bytes4 constant public EXECUTE_TRANSACTION_SELECTOR = 0xbfc8bfce;
-    bytes4 constant public EXECUTE_TRANSACTION_SELECTOR_GENERATOR = bytes4(keccak256("executeTransaction(uint256,address,bytes,bytes)"));
-
-    // fillOrKillOrder
-    bytes4 constant public FILL_OR_KILL_ORDER_SELECTOR = 0x64a3bc15;
-    bytes4 constant public FILL_OR_KILL_ORDER_SELECTOR_GENERATOR = bytes4(keccak256("fillOrKillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)"));
-
-    // fillOrder
-    bytes4 constant public FILL_ORDER_SELECTOR = 0xb4be83d5;
-    bytes4 constant public FILL_ORDER_SELECTOR_GENERATOR = bytes4(keccak256("fillOrder((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)"));
-
-    // fillOrderNoThrow
-    bytes4 constant public FILL_ORDER_NO_THROW_SELECTOR = 0x3e228bae;
-    bytes4 constant public FILL_ORDER_NO_THROW_SELECTOR_GENERATOR = bytes4(keccak256("fillOrderNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),uint256,bytes)"));
-
-    // filled
-    bytes4 constant public FILLED_SELECTOR = 0x288cdc91;
-    bytes4 constant public FILLED_SELECTOR_GENERATOR = bytes4(keccak256("filled(bytes32)"));
-
-    // getAssetProxy
-    bytes4 constant public GET_ASSET_PROXY_SELECTOR = 0x60704108;
-    bytes4 constant public GET_ASSET_PROXY_SELECTOR_GENERATOR = bytes4(keccak256("getAssetProxy(bytes4)"));
-
-    // getOrderInfo
-    bytes4 constant public GET_ORDER_INFO_SELECTOR = 0xc75e0a81;
-    bytes4 constant public GET_ORDER_INFO_SELECTOR_GENERATOR = bytes4(keccak256("getOrderInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes))"));
-
-    // getOrdersInfo
-    bytes4 constant public GET_ORDERS_INFO_SELECTOR = 0x7e9d74dc;
-    bytes4 constant public GET_ORDERS_INFO_SELECTOR_GENERATOR = bytes4(keccak256("getOrdersInfo((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[])"));
-
-    // isValidSignature
-    bytes4 constant public IS_VALID_SIGNATURE_SELECTOR = 0x93634702;
-    bytes4 constant public IS_VALID_SIGNATURE_SELECTOR_GENERATOR = bytes4(keccak256("isValidSignature(bytes32,address,bytes)"));
-
-    // marketBuyOrders
-    bytes4 constant public MARKET_BUY_ORDERS_SELECTOR = 0xe5fa431b;
-    bytes4 constant public MARKET_BUY_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("marketBuyOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])"));
-
-    // marketBuyOrdersNoThrow
-    bytes4 constant public MARKET_BUY_ORDERS_NO_THROW_SELECTOR = 0xa3e20380;
-    bytes4 constant public MARKET_BUY_ORDERS_NO_THROW_SELECTOR_GENERATOR = bytes4(keccak256("marketBuyOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])"));
-
-    // marketSellOrders
-    bytes4 constant public MARKET_SELL_ORDERS_SELECTOR = 0x7e1d9808;
-    bytes4 constant public MARKET_SELL_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("marketSellOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])"));
-
-    // marketSellOrdersNoThrow
-    bytes4 constant public MARKET_SELL_ORDERS_NO_THROW_SELECTOR = 0xdd1c7d18;
-    bytes4 constant public MARKET_SELL_ORDERS_NO_THROW_SELECTOR_GENERATOR = bytes4(keccak256("marketSellOrdersNoThrow((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes)[],uint256,bytes[])"));
-
-    // matchOrders
-    bytes4 constant public MATCH_ORDERS_SELECTOR = 0x3c28d861;
-    bytes4 constant public MATCH_ORDERS_SELECTOR_GENERATOR = bytes4(keccak256("matchOrders((address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),(address,address,address,address,uint256,uint256,uint256,uint256,uint256,uint256,bytes,bytes),bytes,bytes)"));
-
-    // orderEpoch
-    bytes4 constant public ORDER_EPOCH_SELECTOR = 0xd9bfa73e;
-    bytes4 constant public ORDER_EPOCH_SELECTOR_GENERATOR = bytes4(keccak256("orderEpoch(address,address)"));
-
-    // owner
-    bytes4 constant public OWNER_SELECTOR = 0x8da5cb5b;
-    bytes4 constant public OWNER_SELECTOR_GENERATOR = bytes4(keccak256("owner()"));
-
-    // preSign
-    bytes4 constant public PRE_SIGN_SELECTOR = 0x3683ef8e;
-    bytes4 constant public PRE_SIGN_SELECTOR_GENERATOR = bytes4(keccak256("preSign(bytes32,address,bytes)"));
-
-    // preSigned
-    bytes4 constant public PRE_SIGNED_SELECTOR = 0x82c174d0;
-    bytes4 constant public PRE_SIGNED_SELECTOR_GENERATOR = bytes4(keccak256("preSigned(bytes32,address)"));
-
-    // registerAssetProxy
-    bytes4 constant public REGISTER_ASSET_PROXY_SELECTOR = 0xc585bb93;
-    bytes4 constant public REGISTER_ASSET_PROXY_SELECTOR_GENERATOR = bytes4(keccak256("registerAssetProxy(address)"));
-
-    // setSignatureValidatorApproval
-    bytes4 constant public SET_SIGNATURE_VALIDATOR_APPROVAL_SELECTOR = 0x77fcce68;
-    bytes4 constant public SET_SIGNATURE_VALIDATOR_APPROVAL_SELECTOR_GENERATOR = bytes4(keccak256("setSignatureValidatorApproval(address,bool)"));
-
-    // transactions
-    bytes4 constant public TRANSACTIONS_SELECTOR = 0x642f2eaf;
-    bytes4 constant public TRANSACTIONS_SELECTOR_GENERATOR = bytes4(keccak256("transactions(bytes32)"));
-
-    // transferOwnership
-    bytes4 constant public TRANSFER_OWNERSHIP_SELECTOR = 0xf2fde38b;
-    bytes4 constant public TRANSFER_OWNERSHIP_SELECTOR_GENERATOR = bytes4(keccak256("transferOwnership(address)"));
-}
\ No newline at end of file
diff --git a/contracts/libs/contracts/libs/LibFillResults.sol b/contracts/libs/contracts/libs/LibFillResults.sol
deleted file mode 100644
index 74b7f7984..000000000
--- a/contracts/libs/contracts/libs/LibFillResults.sol
+++ /dev/null
@@ -1,53 +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/SafeMath/SafeMath.sol";
-
-
-contract LibFillResults is
-    SafeMath
-{
-    struct FillResults {
-        uint256 makerAssetFilledAmount;  // Total amount of makerAsset(s) filled.
-        uint256 takerAssetFilledAmount;  // Total amount of takerAsset(s) filled.
-        uint256 makerFeePaid;            // Total amount of ZRX paid by maker(s) to feeRecipient(s).
-        uint256 takerFeePaid;            // Total amount of ZRX paid by taker to feeRecipients(s).
-    }
-
-    struct MatchedFillResults {
-        FillResults left;                    // Amounts filled and fees paid of left order.
-        FillResults right;                   // Amounts filled and fees paid of right order.
-        uint256 leftMakerAssetSpreadAmount;  // Spread between price of left and right order, denominated in the left order's makerAsset, paid to taker.
-    }
-
-    /// @dev Adds properties of both FillResults instances.
-    ///      Modifies the first FillResults instance specified.
-    /// @param totalFillResults Fill results instance that will be added onto.
-    /// @param singleFillResults Fill results instance that will be added to totalFillResults.
-    function addFillResults(FillResults memory totalFillResults, FillResults memory singleFillResults)
-        internal
-        pure
-    {
-        totalFillResults.makerAssetFilledAmount = safeAdd(totalFillResults.makerAssetFilledAmount, singleFillResults.makerAssetFilledAmount);
-        totalFillResults.takerAssetFilledAmount = safeAdd(totalFillResults.takerAssetFilledAmount, singleFillResults.takerAssetFilledAmount);
-        totalFillResults.makerFeePaid = safeAdd(totalFillResults.makerFeePaid, singleFillResults.makerFeePaid);
-        totalFillResults.takerFeePaid = safeAdd(totalFillResults.takerFeePaid, singleFillResults.takerFeePaid);
-    }
-}
diff --git a/contracts/libs/contracts/libs/LibMath.sol b/contracts/libs/contracts/libs/LibMath.sol
deleted file mode 100644
index f14b1b34d..000000000
--- a/contracts/libs/contracts/libs/LibMath.sol
+++ /dev/null
@@ -1,253 +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/SafeMath/SafeMath.sol";
-
-
-contract LibMath is
-    SafeMath
-{
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
-    function safeGetPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (uint256 partialAmount)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-
-        require(
-            !isRoundingErrorFloor(
-                numerator,
-                denominator,
-                target
-            ),
-            "ROUNDING_ERROR"
-        );
-        
-        partialAmount = safeDiv(
-            safeMul(numerator, target),
-            denominator
-        );
-        return partialAmount;
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    ///      Reverts if rounding error is >= 0.1%
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
-    function safeGetPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (uint256 partialAmount)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-
-        require(
-            !isRoundingErrorCeil(
-                numerator,
-                denominator,
-                target
-            ),
-            "ROUNDING_ERROR"
-        );
-        
-        // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
-        //       ceil(a / b) = floor((a + b - 1) / b)
-        // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = safeDiv(
-            safeAdd(
-                safeMul(numerator, target),
-                safeSub(denominator, 1)
-            ),
-            denominator
-        );
-        return partialAmount;
-    }
-
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded down.
-    function getPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (uint256 partialAmount)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-
-        partialAmount = safeDiv(
-            safeMul(numerator, target),
-            denominator
-        );
-        return partialAmount;
-    }
-    
-    /// @dev Calculates partial value given a numerator and denominator rounded down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to calculate partial of.
-    /// @return Partial value of target rounded up.
-    function getPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (uint256 partialAmount)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-
-        // safeDiv computes `floor(a / b)`. We use the identity (a, b integer):
-        //       ceil(a / b) = floor((a + b - 1) / b)
-        // To implement `ceil(a / b)` using safeDiv.
-        partialAmount = safeDiv(
-            safeAdd(
-                safeMul(numerator, target),
-                safeSub(denominator, 1)
-            ),
-            denominator
-        );
-        return partialAmount;
-    }
-    
-    /// @dev Checks if rounding error >= 0.1% when rounding down.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (bool isError)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-        
-        // The absolute rounding error is the difference between the rounded
-        // value and the ideal value. The relative rounding error is the
-        // absolute rounding error divided by the absolute value of the
-        // ideal value. This is undefined when the ideal value is zero.
-        //
-        // The ideal value is `numerator * target / denominator`.
-        // Let's call `numerator * target % denominator` the remainder.
-        // The absolute error is `remainder / denominator`.
-        //
-        // When the ideal value is zero, we require the absolute error to
-        // be zero. Fortunately, this is always the case. The ideal value is
-        // zero iff `numerator == 0` and/or `target == 0`. In this case the
-        // remainder and absolute error are also zero. 
-        if (target == 0 || numerator == 0) {
-            return false;
-        }
-        
-        // Otherwise, we want the relative rounding error to be strictly
-        // less than 0.1%.
-        // The relative error is `remainder / (numerator * target)`.
-        // We want the relative error less than 1 / 1000:
-        //        remainder / (numerator * denominator)  <  1 / 1000
-        // or equivalently:
-        //        1000 * remainder  <  numerator * target
-        // so we have a rounding error iff:
-        //        1000 * remainder  >=  numerator * target
-        uint256 remainder = mulmod(
-            target,
-            numerator,
-            denominator
-        );
-        isError = safeMul(1000, remainder) >= safeMul(numerator, target);
-        return isError;
-    }
-    
-    /// @dev Checks if rounding error >= 0.1% when rounding up.
-    /// @param numerator Numerator.
-    /// @param denominator Denominator.
-    /// @param target Value to multiply with numerator/denominator.
-    /// @return Rounding error is present.
-    function isRoundingErrorCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        internal
-        pure
-        returns (bool isError)
-    {
-        require(
-            denominator > 0,
-            "DIVISION_BY_ZERO"
-        );
-        
-        // See the comments in `isRoundingError`.
-        if (target == 0 || numerator == 0) {
-            // When either is zero, the ideal value and rounded value are zero
-            // and there is no rounding error. (Although the relative error
-            // is undefined.)
-            return false;
-        }
-        // Compute remainder as before
-        uint256 remainder = mulmod(
-            target,
-            numerator,
-            denominator
-        );
-        remainder = safeSub(denominator, remainder) % denominator;
-        isError = safeMul(1000, remainder) >= safeMul(numerator, target);
-        return isError;
-    }
-}
diff --git a/contracts/libs/contracts/libs/LibOrder.sol b/contracts/libs/contracts/libs/LibOrder.sol
deleted file mode 100644
index fcf5da5fb..000000000
--- a/contracts/libs/contracts/libs/LibOrder.sol
+++ /dev/null
@@ -1,145 +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 "./LibEIP712.sol";
-
-
-contract LibOrder is
-    LibEIP712
-{
-    // Hash for the EIP712 Order Schema
-    bytes32 constant internal EIP712_ORDER_SCHEMA_HASH = keccak256(abi.encodePacked(
-        "Order(",
-        "address makerAddress,",
-        "address takerAddress,",
-        "address feeRecipientAddress,",
-        "address senderAddress,",
-        "uint256 makerAssetAmount,",
-        "uint256 takerAssetAmount,",
-        "uint256 makerFee,",
-        "uint256 takerFee,",
-        "uint256 expirationTimeSeconds,",
-        "uint256 salt,",
-        "bytes makerAssetData,",
-        "bytes takerAssetData",
-        ")"
-    ));
-
-    // A valid order remains fillable until it is expired, fully filled, or cancelled.
-    // An order's state is unaffected by external factors, like account balances.
-    enum OrderStatus {
-        INVALID,                     // Default value
-        INVALID_MAKER_ASSET_AMOUNT,  // Order does not have a valid maker asset amount
-        INVALID_TAKER_ASSET_AMOUNT,  // Order does not have a valid taker asset amount
-        FILLABLE,                    // Order is fillable
-        EXPIRED,                     // Order has already expired
-        FULLY_FILLED,                // Order is fully filled
-        CANCELLED                    // Order has been cancelled
-    }
-
-    // solhint-disable max-line-length
-    struct Order {
-        address makerAddress;           // Address that created the order.      
-        address takerAddress;           // Address that is allowed to fill the order. If set to 0, any address is allowed to fill the order.          
-        address feeRecipientAddress;    // Address that will recieve fees when order is filled.      
-        address senderAddress;          // Address that is allowed to call Exchange contract methods that affect this order. If set to 0, any address is allowed to call these methods.
-        uint256 makerAssetAmount;       // Amount of makerAsset being offered by maker. Must be greater than 0.        
-        uint256 takerAssetAmount;       // Amount of takerAsset being bid on by maker. Must be greater than 0.        
-        uint256 makerFee;               // Amount of ZRX paid to feeRecipient by maker when order is filled. If set to 0, no transfer of ZRX from maker to feeRecipient will be attempted.
-        uint256 takerFee;               // Amount of ZRX paid to feeRecipient by taker when order is filled. If set to 0, no transfer of ZRX from taker to feeRecipient will be attempted.
-        uint256 expirationTimeSeconds;  // Timestamp in seconds at which order expires.          
-        uint256 salt;                   // Arbitrary number to facilitate uniqueness of the order's hash.     
-        bytes makerAssetData;           // Encoded data that can be decoded by a specified proxy contract when transferring makerAsset. The last byte references the id of this proxy.
-        bytes takerAssetData;           // Encoded data that can be decoded by a specified proxy contract when transferring takerAsset. The last byte references the id of this proxy.
-    }
-    // solhint-enable max-line-length
-
-    struct OrderInfo {
-        uint8 orderStatus;                    // Status that describes order's validity and fillability.
-        bytes32 orderHash;                    // EIP712 hash of the order (see LibOrder.getOrderHash).
-        uint256 orderTakerAssetFilledAmount;  // Amount of order that has already been filled.
-    }
-
-    /// @dev Calculates Keccak-256 hash of the order.
-    /// @param order The order structure.
-    /// @return Keccak-256 EIP712 hash of the order.
-    function getOrderHash(Order memory order)
-        internal
-        view
-        returns (bytes32 orderHash)
-    {
-        orderHash = hashEIP712Message(hashOrder(order));
-        return orderHash;
-    }
-
-    /// @dev Calculates EIP712 hash of the order.
-    /// @param order The order structure.
-    /// @return EIP712 hash of the order.
-    function hashOrder(Order memory order)
-        internal
-        pure
-        returns (bytes32 result)
-    {
-        bytes32 schemaHash = EIP712_ORDER_SCHEMA_HASH;
-        bytes32 makerAssetDataHash = keccak256(order.makerAssetData);
-        bytes32 takerAssetDataHash = keccak256(order.takerAssetData);
-
-        // Assembly for more efficiently computing:
-        // keccak256(abi.encodePacked(
-        //     EIP712_ORDER_SCHEMA_HASH,
-        //     bytes32(order.makerAddress),
-        //     bytes32(order.takerAddress),
-        //     bytes32(order.feeRecipientAddress),
-        //     bytes32(order.senderAddress),
-        //     order.makerAssetAmount,
-        //     order.takerAssetAmount,
-        //     order.makerFee,
-        //     order.takerFee,
-        //     order.expirationTimeSeconds,
-        //     order.salt,
-        //     keccak256(order.makerAssetData),
-        //     keccak256(order.takerAssetData)
-        // ));
-
-        assembly {
-            // Calculate memory addresses that will be swapped out before hashing
-            let pos1 := sub(order, 32)
-            let pos2 := add(order, 320)
-            let pos3 := add(order, 352)
-
-            // Backup
-            let temp1 := mload(pos1)
-            let temp2 := mload(pos2)
-            let temp3 := mload(pos3)
-            
-            // Hash in place
-            mstore(pos1, schemaHash)
-            mstore(pos2, makerAssetDataHash)
-            mstore(pos3, takerAssetDataHash)
-            result := keccak256(pos1, 416)
-            
-            // Restore
-            mstore(pos1, temp1)
-            mstore(pos2, temp2)
-            mstore(pos3, temp3)
-        }
-        return result;
-    }
-}
diff --git a/contracts/libs/contracts/test/TestLibs/TestLibs.sol b/contracts/libs/contracts/test/TestLibs/TestLibs.sol
deleted file mode 100644
index bd5f9f9da..000000000
--- a/contracts/libs/contracts/test/TestLibs/TestLibs.sol
+++ /dev/null
@@ -1,152 +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 "../../libs/LibMath.sol";
-import "../../libs/LibOrder.sol";
-import "../../libs/LibFillResults.sol";
-import "../../libs/LibAbiEncoder.sol";
-
-
-contract TestLibs is 
-    LibMath,
-    LibOrder,
-    LibFillResults,
-    LibAbiEncoder
-{
-    function publicAbiEncodeFillOrder(
-        Order memory order,
-        uint256 takerAssetFillAmount,
-        bytes memory signature
-    )
-        public
-        pure
-        returns (bytes memory fillOrderCalldata)
-    {
-        fillOrderCalldata = abiEncodeFillOrder(
-            order,
-            takerAssetFillAmount,
-            signature
-        );
-        return fillOrderCalldata;
-    }
-
-    function publicGetPartialAmountFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        public
-        pure
-        returns (uint256 partialAmount)
-    {
-        partialAmount = getPartialAmountFloor(
-            numerator,
-            denominator,
-            target
-        );
-        return partialAmount;
-    }
-
-    function publicGetPartialAmountCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        public
-        pure
-        returns (uint256 partialAmount)
-    {
-        partialAmount = getPartialAmountCeil(
-            numerator,
-            denominator,
-            target
-        );
-        return partialAmount;
-    }
-
-    function publicIsRoundingErrorFloor(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        public
-        pure
-        returns (bool isError)
-    {
-        isError = isRoundingErrorFloor(
-            numerator,
-            denominator,
-            target
-        );
-        return isError;
-    }
-
-    function publicIsRoundingErrorCeil(
-        uint256 numerator,
-        uint256 denominator,
-        uint256 target
-    )
-        public
-        pure
-        returns (bool isError)
-    {
-        isError = isRoundingErrorCeil(
-            numerator,
-            denominator,
-            target
-        );
-        return isError;
-    }
-
-    function publicGetOrderHash(Order memory order)
-        public
-        view
-        returns (bytes32 orderHash)
-    {
-        orderHash = getOrderHash(order);
-        return orderHash;
-    }
-
-    function getOrderSchemaHash()
-        public
-        pure
-        returns (bytes32)
-    {
-        return EIP712_ORDER_SCHEMA_HASH;
-    }
-
-    function getDomainSeparatorSchemaHash()
-        public
-        pure
-        returns (bytes32)
-    {
-        return EIP712_DOMAIN_SEPARATOR_SCHEMA_HASH;
-    }
-
-    function publicAddFillResults(FillResults memory totalFillResults, FillResults memory singleFillResults)
-        public
-        pure
-        returns (FillResults memory)
-    {
-        addFillResults(totalFillResults, singleFillResults);
-        return totalFillResults;
-    }
-}
diff --git a/contracts/libs/package.json b/contracts/libs/package.json
deleted file mode 100644
index b28ec3774..000000000
--- a/contracts/libs/package.json
+++ /dev/null
@@ -1,89 +0,0 @@
-{
-    "name": "@0x/contracts-libs",
-    "version": "1.0.6",
-    "engines": {
-        "node": ">=6.12"
-    },
-    "description": "Smart contract libs of 0x protocol",
-    "main": "lib/src/index.js",
-    "directories": {
-        "test": "test"
-    },
-    "scripts": {
-        "build": "yarn pre_build && tsc -b",
-        "build:ci": "yarn build",
-        "pre_build": "run-s compile generate_contract_wrappers",
-        "test": "yarn run_mocha",
-        "rebuild_and_test": "run-s build test",
-        "test:coverage": "SOLIDITY_COVERAGE=true run-s build run_mocha coverage:report:text coverage:report:lcov",
-        "test:profiler": "SOLIDITY_PROFILER=true run-s build run_mocha profiler:report:html",
-        "test:trace": "SOLIDITY_REVERT_TRACE=true run-s build run_mocha",
-        "run_mocha": "mocha --require source-map-support/register --require make-promises-safe 'lib/test/**/*.js' --timeout 100000 --bail --exit",
-        "compile": "sol-compiler",
-        "watch": "sol-compiler -w",
-        "clean": "shx rm -rf lib generated-artifacts generated-wrappers",
-        "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../../node_modules/@0x/abi-gen-templates/contract.handlebars --partials '../../node_modules/@0x/abi-gen-templates/partials/**/*.handlebars' --output generated-wrappers --backend ethers",
-        "lint": "tslint --format stylish --project . --exclude ./generated-wrappers/**/* --exclude ./generated-artifacts/**/* --exclude **/lib/**/* && yarn lint-contracts",
-        "coverage:report:text": "istanbul report text",
-        "coverage:report:html": "istanbul report html && open coverage/index.html",
-        "profiler:report:html": "istanbul report html && open coverage/index.html",
-        "coverage:report:lcov": "istanbul report lcov",
-        "test:circleci": "yarn test",
-        "lint-contracts": "solhint -c ../.solhint.json contracts/**/**/**/**/*.sol"
-    },
-    "config": {
-        "abis": "generated-artifacts/@(LibMath|LibOrder|LibFillResults|LibAbiEncoder|TestLibs|LibEIP712).json"
-    },
-    "repository": {
-        "type": "git",
-        "url": "https://github.com/0xProject/0x-monorepo.git"
-    },
-    "license": "Apache-2.0",
-    "bugs": {
-        "url": "https://github.com/0xProject/0x-monorepo/issues"
-    },
-    "homepage": "https://github.com/0xProject/0x-monorepo/contracts/libs/README.md",
-    "devDependencies": {
-        "@0x/abi-gen": "^1.0.22",
-        "@0x/contracts-test-utils": "^2.0.1",
-        "@0x/dev-utils": "^1.0.24",
-        "@0x/sol-compiler": "^2.0.2",
-        "@0x/subproviders": "^2.1.11",
-        "@0x/tslint-config": "^2.0.2",
-        "@types/bn.js": "^4.11.0",
-        "@types/lodash": "4.14.104",
-        "@types/node": "*",
-        "@types/yargs": "^10.0.0",
-        "chai": "^4.0.1",
-        "chai-as-promised": "^7.1.0",
-        "chai-bignumber": "^3.0.0",
-        "dirty-chai": "^2.0.1",
-        "ethereumjs-abi": "0.6.5",
-        "make-promises-safe": "^1.1.0",
-        "mocha": "^4.1.0",
-        "npm-run-all": "^4.1.2",
-        "shx": "^0.2.2",
-        "solhint": "^1.4.1",
-        "tslint": "5.11.0",
-        "typescript": "3.0.1",
-        "yargs": "^10.0.3"
-    },
-    "dependencies": {
-        "@0x/base-contract": "^3.0.13",
-        "@0x/contracts-multisig": "^1.0.6",
-        "@0x/contracts-utils": "^1.0.6",
-        "@0x/order-utils": "^3.1.2",
-        "@0x/types": "^1.5.2",
-        "@0x/typescript-typings": "^3.0.8",
-        "@0x/utils": "^3.0.1",
-        "@0x/web3-wrapper": "^3.2.4",
-        "@types/js-combinatorics": "^0.5.29",
-        "bn.js": "^4.11.8",
-        "ethereum-types": "^1.1.6",
-        "ethereumjs-util": "^5.1.1",
-        "lodash": "^4.17.5"
-    },
-    "publishConfig": {
-        "access": "public"
-    }
-}
diff --git a/contracts/libs/src/artifacts/index.ts b/contracts/libs/src/artifacts/index.ts
deleted file mode 100644
index 3955bbe2b..000000000
--- a/contracts/libs/src/artifacts/index.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { ContractArtifact } from 'ethereum-types';
-
-import * as LibAbiEncoder from '../../generated-artifacts/LibAbiEncoder.json';
-import * as LibEIP721 from '../../generated-artifacts/LibEIP712.json';
-import * as LibFillResults from '../../generated-artifacts/LibFillResults.json';
-import * as LibMath from '../../generated-artifacts/LibMath.json';
-import * as LibOrder from '../../generated-artifacts/LibOrder.json';
-import * as TestLibs from '../../generated-artifacts/TestLibs.json';
-
-export const artifacts = {
-    TestLibs: TestLibs as ContractArtifact,
-    LibAbiEncoder: LibAbiEncoder as ContractArtifact,
-    LibFillResults: LibFillResults as ContractArtifact,
-    LibMath: LibMath as ContractArtifact,
-    LibOrder: LibOrder as ContractArtifact,
-    LibEIP721: LibEIP721 as ContractArtifact,
-};
diff --git a/contracts/libs/src/index.ts b/contracts/libs/src/index.ts
deleted file mode 100644
index d55f08ea2..000000000
--- a/contracts/libs/src/index.ts
+++ /dev/null
@@ -1,2 +0,0 @@
-export * from './artifacts';
-export * from './wrappers';
diff --git a/contracts/libs/src/wrappers/index.ts b/contracts/libs/src/wrappers/index.ts
deleted file mode 100644
index baaae6e34..000000000
--- a/contracts/libs/src/wrappers/index.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-export * from '../../generated-wrappers/test_libs';
-export * from '../../generated-wrappers/lib_abi_encoder';
-export * from '../../generated-wrappers/lib_fill_results';
-export * from '../../generated-wrappers/lib_math';
-export * from '../../generated-wrappers/lib_order';
-export * from '../../generated-wrappers/lib_e_i_p712';
diff --git a/contracts/libs/test/exchange/libs.ts b/contracts/libs/test/exchange/libs.ts
deleted file mode 100644
index 44ff6a844..000000000
--- a/contracts/libs/test/exchange/libs.ts
+++ /dev/null
@@ -1,125 +0,0 @@
-import {
-    addressUtils,
-    chaiSetup,
-    constants,
-    OrderFactory,
-    provider,
-    txDefaults,
-    web3Wrapper,
-} from '@0x/contracts-test-utils';
-import { BlockchainLifecycle } from '@0x/dev-utils';
-import { assetDataUtils, orderHashUtils } from '@0x/order-utils';
-import { SignedOrder } from '@0x/types';
-import { BigNumber } from '@0x/utils';
-import * as chai from 'chai';
-
-import { TestLibsContract } from '../../generated-wrappers/test_libs';
-import { artifacts } from '../../src/artifacts';
-
-chaiSetup.configure();
-const expect = chai.expect;
-
-const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
-describe('Exchange libs', () => {
-    let signedOrder: SignedOrder;
-    let orderFactory: OrderFactory;
-    let libs: TestLibsContract;
-
-    before(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    after(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    before(async () => {
-        const accounts = await web3Wrapper.getAvailableAddressesAsync();
-        const makerAddress = accounts[0];
-        libs = await TestLibsContract.deployFrom0xArtifactAsync(artifacts.TestLibs, provider, txDefaults);
-
-        const defaultOrderParams = {
-            ...constants.STATIC_ORDER_PARAMS,
-            exchangeAddress: libs.address,
-            makerAddress,
-            feeRecipientAddress: addressUtils.generatePseudoRandomAddress(),
-            makerAssetData: assetDataUtils.encodeERC20AssetData(addressUtils.generatePseudoRandomAddress()),
-            takerAssetData: assetDataUtils.encodeERC20AssetData(addressUtils.generatePseudoRandomAddress()),
-        };
-        const privateKey = constants.TESTRPC_PRIVATE_KEYS[accounts.indexOf(makerAddress)];
-        orderFactory = new OrderFactory(privateKey, defaultOrderParams);
-    });
-
-    beforeEach(async () => {
-        await blockchainLifecycle.startAsync();
-    });
-    afterEach(async () => {
-        await blockchainLifecycle.revertAsync();
-    });
-    // Note(albrow): These tests are designed to be supplemental to the
-    // combinatorial tests in test/exchange/internal. They test specific edge
-    // cases that are not covered by the combinatorial tests.
-    describe('LibMath', () => {
-        describe('isRoundingError', () => {
-            it('should return true if there is a rounding error of 0.1%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(999);
-                const target = new BigNumber(50);
-                // rounding error = ((20*50/999) - floor(20*50/999)) / (20*50/999) = 0.1%
-                const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.true();
-            });
-            it('should return false if there is a rounding of 0.09%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(9991);
-                const target = new BigNumber(500);
-                // rounding error = ((20*500/9991) - floor(20*500/9991)) / (20*500/9991) = 0.09%
-                const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.false();
-            });
-            it('should return true if there is a rounding error of 0.11%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(9989);
-                const target = new BigNumber(500);
-                // rounding error = ((20*500/9989) - floor(20*500/9989)) / (20*500/9989) = 0.011%
-                const isRoundingError = await libs.publicIsRoundingErrorFloor.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.true();
-            });
-        });
-        describe('isRoundingErrorCeil', () => {
-            it('should return true if there is a rounding error of 0.1%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(1001);
-                const target = new BigNumber(50);
-                // rounding error = (ceil(20*50/1001) - (20*50/1001)) / (20*50/1001) = 0.1%
-                const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.true();
-            });
-            it('should return false if there is a rounding of 0.09%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(10009);
-                const target = new BigNumber(500);
-                // rounding error = (ceil(20*500/10009) - (20*500/10009)) / (20*500/10009) = 0.09%
-                const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.false();
-            });
-            it('should return true if there is a rounding error of 0.11%', async () => {
-                const numerator = new BigNumber(20);
-                const denominator = new BigNumber(10011);
-                const target = new BigNumber(500);
-                // rounding error = (ceil(20*500/10011) - (20*500/10011)) / (20*500/10011) = 0.11%
-                const isRoundingError = await libs.publicIsRoundingErrorCeil.callAsync(numerator, denominator, target);
-                expect(isRoundingError).to.be.true();
-            });
-        });
-    });
-
-    describe('LibOrder', () => {
-        describe('getOrderHash', () => {
-            it('should output the correct orderHash', async () => {
-                signedOrder = await orderFactory.newSignedOrderAsync();
-                const orderHashHex = await libs.publicGetOrderHash.callAsync(signedOrder);
-                expect(orderHashUtils.getOrderHashHex(signedOrder)).to.be.equal(orderHashHex);
-            });
-        });
-    });
-});
diff --git a/contracts/libs/test/global_hooks.ts b/contracts/libs/test/global_hooks.ts
deleted file mode 100644
index f8ace376a..000000000
--- a/contracts/libs/test/global_hooks.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-import { env, EnvVars } from '@0x/dev-utils';
-
-import { coverage, profiler, provider } from '@0x/contracts-test-utils';
-before('start web3 provider', () => {
-    provider.start();
-});
-after('generate coverage report', async () => {
-    if (env.parseBoolean(EnvVars.SolidityCoverage)) {
-        const coverageSubprovider = coverage.getCoverageSubproviderSingleton();
-        await coverageSubprovider.writeCoverageAsync();
-    }
-    if (env.parseBoolean(EnvVars.SolidityProfiler)) {
-        const profilerSubprovider = profiler.getProfilerSubproviderSingleton();
-        await profilerSubprovider.writeProfilerOutputAsync();
-    }
-    provider.stop();
-});
diff --git a/contracts/libs/tsconfig.json b/contracts/libs/tsconfig.json
deleted file mode 100644
index 27ca35085..000000000
--- a/contracts/libs/tsconfig.json
+++ /dev/null
@@ -1,18 +0,0 @@
-{
-    "extends": "../../tsconfig",
-    "compilerOptions": {
-        "outDir": "lib",
-        "rootDir": ".",
-        "resolveJsonModule": true
-    },
-    "include": ["./src/**/*", "./test/**/*", "./generated-wrappers/**/*"],
-    "files": [
-        "./generated-artifacts/TestLibs.json",
-        "./generated-artifacts/LibOrder.json",
-        "./generated-artifacts/LibFillResults.json",
-        "./generated-artifacts/LibAbiEncoder.json",
-        "./generated-artifacts/LibEIP712.json",
-        "./generated-artifacts/LibMath.json"
-    ],
-    "exclude": ["./deploy/solc/solc_bin"]
-}
diff --git a/contracts/libs/tslint.json b/contracts/libs/tslint.json
deleted file mode 100644
index 1bb3ac2a2..000000000
--- a/contracts/libs/tslint.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-    "extends": ["@0x/tslint-config"],
-    "rules": {
-        "custom-no-magic-numbers": false
-    }
-}