Try enabling no-unused-variable...

packages/metacoin/test/metacoin_test.ts

@@ -1,7 +1,6 @@
 import { BlockchainLifecycle, devConstants } from '@0xproject/dev-utils';
 import { ContractArtifact } from '@0xproject/sol-compiler';
 import { BigNumber } from '@0xproject/utils';
-import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import { LogWithDecodedArgs } from 'ethereum-types';
 import 'make-promises-safe';
@@ -18,7 +17,7 @@ const artifact: ContractArtifact = MetacoinArtifact as any;
 chaiSetup.configure();
 const { expect } = chai;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-
+// tslint:disable:no-unnecessary-type-assertion
 describe('Metacoin', () => {
     let metacoin: MetacoinContract;
     const ownerAddress = devConstants.TESTRPC_FIRST_ADDRESS;
@@ -116,3 +115,4 @@ describe('Metacoin', () => {
         });
     });
 });
+// tslint:enable:no-unnecessary-type-assertion

packages/metacoin/test/utils/config.ts

@@ -1,5 +1,4 @@
 import { devConstants } from '@0xproject/dev-utils';
-import * as path from 'path';
 
 export const config = {
     networkId: 50,

packages/metacoin/test/utils/web3_wrapper.ts

@@ -2,7 +2,6 @@ import { env, EnvVars } from '@0xproject/dev-utils';
 import { GanacheSubprovider, prependSubprovider } from '@0xproject/subproviders';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as fs from 'fs';
-import * as _ from 'lodash';
 import ProviderEngine = require('web3-provider-engine');
 
 import { config } from './config';