3 files changed, 66 insertions, 3 deletions
diff --git a/packages/dev-utils/README.md b/packages/dev-utils/README.md
index d7e580d9f..2b183f1c7 100644
--- a/packages/dev-utils/README.md
+++ b/packages/dev-utils/README.md
@@ -26,3 +26,67 @@ If your project is in [TypeScript](https://www.typescriptlang.org/), add the fol
     "typeRoots": ["node_modules/@0xproject/typescript-typings/types", "node_modules/@types"],
 }
 ```
+
+## Contributing
+
+We welcome improvements and fixes from the wider community! To report bugs within this package, please create an issue in this repository.
+
+Please read our [contribution guidelines](../../CONTRIBUTING.md) before getting started.
+
+### Install dependencies
+
+If you don't have yarn workspaces enabled (Yarn < v1.0) - enable them:
+
+```bash
+yarn config set workspaces-experimental true
+```
+
+Then install dependencies
+
+```bash
+yarn install
+```
+
+### Build
+
+If this is your **first** time building this package, you must first build **all** packages within the monorepo. This is because packages that depend on other packages located inside this monorepo are symlinked when run from **within** the monorepo. This allows you to make changes across multiple packages without first publishing dependent packages to NPM. To build all packages, run the following from the monorepo root directory:
+
+```bash
+yarn lerna:rebuild
+```
+
+Or continuously rebuild on change:
+
+```bash
+yarn dev
+```
+
+You can also build this specific package by running the following from within its directory:
+
+```bash
+yarn build
+```
+
+or continuously rebuild on change:
+
+```bash
+yarn build:watch
+```
+
+### Clean
+
+```bash
+yarn clean
+```
+
+### Lint
+
+```bash
+yarn lint
+```
+
+### Run Tests
+
+```bash
+yarn test
+```
diff --git a/packages/dev-utils/src/globals.d.ts b/packages/dev-utils/src/globals.d.ts
index 4fee73568..94e63a32d 100644
--- a/packages/dev-utils/src/globals.d.ts
+++ b/packages/dev-utils/src/globals.d.ts
@@ -1,5 +1,3 @@
-declare module 'web3-provider-engine/subproviders/rpc';
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/dev-utils/src/web3_factory.ts b/packages/dev-utils/src/web3_factory.ts
index 6435f0f9a..f45c36930 100644
--- a/packages/dev-utils/src/web3_factory.ts
+++ b/packages/dev-utils/src/web3_factory.ts
@@ -7,6 +7,7 @@ import ProviderEngine = require('web3-provider-engine');
 import RpcSubprovider = require('web3-provider-engine/subproviders/rpc');
 
 import { EmptyWalletSubprovider, FakeGasEstimateSubprovider, GanacheSubprovider } from '@0xproject/subproviders';
+import { Provider } from '@0xproject/types';
 import * as fs from 'fs';
 import * as _ from 'lodash';
 import * as process from 'process';
@@ -34,7 +35,7 @@ export const web3Factory = {
         web3.setProvider(provider);
         return web3;
     },
-    getRpcProvider(config: Web3Config = {}): Web3.Provider {
+    getRpcProvider(config: Web3Config = {}): Provider {
         const provider = new ProviderEngine();
         const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
         if (isCoverageEnabled) {