Refactor networkId out of web3Wrapper

packages/contracts/deploy/src/deployer.ts

@@ -31,7 +31,7 @@ export class Deployer {
         const jsonrpcUrl = `http://localhost:${this.jsonrpcPort}`;
         const web3Provider = new Web3.providers.HttpProvider(jsonrpcUrl);
         this.defaults = opts.defaults;
-        this.web3Wrapper = new Web3Wrapper(web3Provider, this.networkId, this.defaults);
+        this.web3Wrapper = new Web3Wrapper(web3Provider, this.defaults);
     }
     /**
      * Loads contract artifact and deploys contract with given arguments.

packages/contracts/deploy/src/utils/network.ts

@@ -1,4 +1,5 @@
 import {promisify} from '@0xproject/utils';
+import {Web3Wrapper} from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
@@ -6,8 +7,8 @@ export const network = {
     async getNetworkIdIfExistsAsync(port: number): Promise<number> {
         const url = `http://localhost:${port}`;
         const web3Provider = new Web3.providers.HttpProvider(url);
-        const web3 = new Web3(web3Provider);
-        const networkId = _.parseInt(await promisify<string>(web3.version.getNetwork)());
+        const web3Wrapper = new Web3Wrapper(web3Provider);
+        const networkId = web3Wrapper.getNetworkIdAsync();
         return networkId;
     },
 };