Merge branch 'feature/addSubproviders' into feature/portal-ledger-support

* feature/addSubproviders:
  remove console.log
  Update README.md
  Fix unit test
  Add missing params
  Debug CircleCi failure
  Update yarn.lock
  Inline network module
  Add todo
  Stop supporting different file extensions in abi-gen
  Refactor networkId out of web3Wrapper
  Update connect types in preperation for publishing
  Add link to random id generator
  Remove `prebuild` command and add `test:circleci`
  Fix CI command
  Address feedback
  Refactor web3Wrapper to a separate package

1 files changed, 3 insertions, 3 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
             }