Add missing type definitions

packages/0x.js/package.json

@@ -103,6 +103,7 @@
         "@0xproject/order-utils": "^0.0.4",
         "@0xproject/types": "^0.6.3",
         "@0xproject/typescript-typings": "^0.3.1",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/utils": "^0.6.1",
         "@0xproject/web3-wrapper": "^0.6.3",
         "ethers": "^3.0.15",

packages/0x.js/src/0x.ts

@@ -200,7 +200,7 @@ export class ZeroEx {
      */
     public async awaitTransactionMinedAsync(
         txHash: string,
-        pollingIntervalMs = 1000,
+        pollingIntervalMs: number = 1000,
         timeoutMs?: number,
     ): Promise<TransactionReceiptWithDecodedLogs> {
         // Hack: Get Web3Wrapper from ContractWrappers

packages/0x.js/test/global_hooks.ts

@@ -5,7 +5,7 @@ import * as path from 'path';
 import { constants } from './utils/constants';
 import { provider } from './utils/web3_wrapper';
 
-before('migrate contracts', async function() {
+before('migrate contracts', async function(): Promise<void> {
     // HACK: Since the migrations take longer then our global mocha timeout limit
     // we manually increase it for this before hook.
     this.timeout(20000);

packages/0x.js/test/utils/chai_setup.ts

@@ -4,7 +4,7 @@ import ChaiBigNumber = require('chai-bignumber');
 import * as dirtyChai from 'dirty-chai';
 
 export const chaiSetup = {
-    configure() {
+    configure(): void {
         chai.config.includeStack = true;
         chai.use(ChaiBigNumber());
         chai.use(dirtyChai);