3 files changed, 12 insertions, 13 deletions
diff --git a/packages/website/ts/blockchain.ts b/packages/website/ts/blockchain.ts
index 809da7d4f..76640a072 100644
--- a/packages/website/ts/blockchain.ts
+++ b/packages/website/ts/blockchain.ts
@@ -23,9 +23,9 @@ import {
     LedgerWalletSubprovider,
     RedundantRPCSubprovider,
 } from '@0xproject/subproviders';
+import {promisify} from '@0xproject/utils';
 import BigNumber from 'bignumber.js';
 import compareVersions = require('compare-versions');
-import promisify = require('es6-promisify');
 import ethUtil = require('ethereumjs-util');
 import findVersions = require('find-versions');
 import * as _ from 'lodash';
@@ -68,7 +68,7 @@ export class Blockchain {
     public nodeVersion: string;
     private zeroEx: ZeroEx;
     private dispatcher: Dispatcher;
-    private web3Wrapper: Web3Wrapper;
+    private web3Wrapper?: Web3Wrapper;
     private exchangeAddress: string;
     private tokenTransferProxy: ContractInstance;
     private tokenRegistry: ContractInstance;
@@ -631,7 +631,7 @@ export class Blockchain {
         let networkIdIfExists: number;
         if (!_.isUndefined(injectedWeb3)) {
             try {
-                networkIdIfExists = _.parseInt(await promisify(injectedWeb3.version.getNetwork)());
+                networkIdIfExists = _.parseInt(await promisify<string>(injectedWeb3.version.getNetwork)());
             } catch (err) {
                 // Ignore error and proceed with networkId undefined
             }
diff --git a/packages/website/ts/globals.d.ts b/packages/website/ts/globals.d.ts
index 38a4b971e..b4611f583 100644
--- a/packages/website/ts/globals.d.ts
+++ b/packages/website/ts/globals.d.ts
@@ -1,6 +1,5 @@
 declare module 'react-tooltip';
 declare module 'react-router-hash-link';
-declare module 'es6-promisify';
 declare module 'truffle-contract';
 declare module 'ethereumjs-util';
 declare module 'keccak';
diff --git a/packages/website/ts/web3_wrapper.ts b/packages/website/ts/web3_wrapper.ts
index c43436c7e..b713f8a33 100644
--- a/packages/website/ts/web3_wrapper.ts
+++ b/packages/website/ts/web3_wrapper.ts
@@ -1,8 +1,8 @@
+import {promisify} from '@0xproject/utils';
 import BigNumber from 'bignumber.js';
-import promisify = require('es6-promisify');
 import * as _ from 'lodash';
 import {Dispatcher} from 'ts/redux/dispatcher';
-import Web3 = require('web3');
+import * as Web3 from 'web3';
 
 export class Web3Wrapper {
     private dispatcher: Dispatcher;
@@ -28,7 +28,7 @@ export class Web3Wrapper {
         return this.web3.isAddress(address);
     }
     public async getAccountsAsync(): Promise<string[]> {
-        const addresses = await promisify(this.web3.eth.getAccounts)();
+        const addresses = await promisify<string[]>(this.web3.eth.getAccounts)();
         return addresses;
     }
     public async getFirstAccountIfExistsAsync() {
@@ -38,8 +38,8 @@ export class Web3Wrapper {
         }
         return (addresses)[0];
     }
-    public async getNodeVersionAsync() {
-        const nodeVersion = await promisify(this.web3.version.getNode)();
+    public async getNodeVersionAsync(): Promise<string> {
+        const nodeVersion = await promisify<string>(this.web3.version.getNode)();
         return nodeVersion;
     }
     public getProviderObj() {
@@ -54,24 +54,24 @@ export class Web3Wrapper {
         }
     }
     public async getBalanceInEthAsync(owner: string): Promise<BigNumber> {
-        const balanceInWei: BigNumber = await promisify(this.web3.eth.getBalance)(owner);
+        const balanceInWei: BigNumber = await promisify<BigNumber>(this.web3.eth.getBalance)(owner);
         const balanceEthOldBigNumber = this.web3.fromWei(balanceInWei, 'ether');
         const balanceEth = new BigNumber(balanceEthOldBigNumber);
         return balanceEth;
     }
     public async doesContractExistAtAddressAsync(address: string): Promise<boolean> {
-        const code = await promisify(this.web3.eth.getCode)(address);
+        const code = await promisify<string>(this.web3.eth.getCode)(address);
         // Regex matches 0x0, 0x00, 0x in order to accomodate poorly implemented clients
         const zeroHexAddressRegex = /^0[xX][0]*$/;
         const didFindCode = _.isNull(code.match(zeroHexAddressRegex));
         return didFindCode;
     }
     public async signTransactionAsync(address: string, message: string): Promise<string> {
-        const signData = await promisify(this.web3.eth.sign)(address, message);
+        const signData = await promisify<string>(this.web3.eth.sign)(address, message);
         return signData;
     }
     public async getBlockTimestampAsync(blockHash: string): Promise<number> {
-        const {timestamp} = await promisify(this.web3.eth.getBlock)(blockHash);
+        const {timestamp} = await promisify<Web3.BlockWithoutTransactionData>(this.web3.eth.getBlock)(blockHash);
         return timestamp;
     }
     public destroy() {