1 files changed, 6 insertions, 27 deletions

diff --git a/src/0x.js.ts b/src/0x.js.ts
index 0f437e039..7b53b70ea 100644
--- a/src/0x.js.ts
+++ b/src/0x.js.ts
@@ -4,22 +4,20 @@ import {bigNumberConfigs} from './bignumber_config';
 import * as ethUtil from 'ethereumjs-util';
 import contract = require('truffle-contract');
 import * as Web3 from 'web3';
-import * as ethABI from 'ethereumjs-abi';
 import findVersions = require('find-versions');
 import compareVersions = require('compare-versions');
 import {Web3Wrapper} from './web3_wrapper';
 import {constants} from './utils/constants';
 import {utils} from './utils/utils';
 import {assert} from './utils/assert';
-import {SchemaValidator} from './utils/schema_validator';
 import {ExchangeWrapper} from './contract_wrappers/exchange_wrapper';
 import {TokenRegistryWrapper} from './contract_wrappers/token_registry_wrapper';
 import {ecSignatureSchema} from './schemas/ec_signature_schema';
 import {TokenWrapper} from './contract_wrappers/token_wrapper';
-import {SolidityTypes, ECSignature, ZeroExError} from './types';
-import {Order, SignedOrder} from './types';
-import {orderSchema} from './schemas/order_schemas';
+import {ECSignature, ZeroExError, Order, SignedOrder} from './types';
 import * as ExchangeArtifacts from './artifacts/Exchange.json';
+import {SchemaValidator} from './utils/schema_validator';
+import {orderSchema} from './schemas/order_schemas';
 
 // Customize our BigNumber instances
 bigNumberConfigs.configure();
@@ -132,29 +130,10 @@ export class ZeroEx {
      * Computes the orderHash for a given order and returns it as a hex encoded string.
      */
     public async getOrderHashHexAsync(order: Order|SignedOrder): Promise<string> {
+        assert.doesConformToSchema(
+            'order', SchemaValidator.convertToJSONSchemaCompatibleObject(order as object), orderSchema);
         const exchangeContractAddr = await this.getExchangeAddressAsync();
-        assert.doesConformToSchema('order',
-                                   SchemaValidator.convertToJSONSchemaCompatibleObject(order as object),
-                                   orderSchema);
-
-        const orderParts = [
-            {value: exchangeContractAddr, type: SolidityTypes.address},
-            {value: order.maker, type: SolidityTypes.address},
-            {value: order.taker, type: SolidityTypes.address},
-            {value: order.makerTokenAddress, type: SolidityTypes.address},
-            {value: order.takerTokenAddress, type: SolidityTypes.address},
-            {value: order.feeRecipient, type: SolidityTypes.address},
-            {value: utils.bigNumberToBN(order.makerTokenAmount), type: SolidityTypes.uint256},
-            {value: utils.bigNumberToBN(order.takerTokenAmount), type: SolidityTypes.uint256},
-            {value: utils.bigNumberToBN(order.makerFee), type: SolidityTypes.uint256},
-            {value: utils.bigNumberToBN(order.takerFee), type: SolidityTypes.uint256},
-            {value: utils.bigNumberToBN(order.expirationUnixTimestampSec), type: SolidityTypes.uint256},
-            {value: utils.bigNumberToBN(order.salt), type: SolidityTypes.uint256},
-        ];
-        const types = _.map(orderParts, o => o.type);
-        const values = _.map(orderParts, o => o.value);
-        const hashBuff = ethABI.soliditySHA3(types, values);
-        const hashHex = ethUtil.bufferToHex(hashBuff);
+        const hashHex = utils.getOrderHashHex(order, exchangeContractAddr);
         return hashHex;
     }
     /**