Merge branch 'development' into removeMigrateStep

* development:
  Fix tests
  Call static functions as static
  Address feedback
  Move our contract templates to accept Provider instead of Web3Wrapper

87 files changed, 792 insertions, 723 deletions

diff --git a/packages/0x.js/CHANGELOG.json b/packages/0x.js/CHANGELOG.json
index fd248ff44..6d5dc0dd2 100644
--- a/packages/0x.js/CHANGELOG.json
+++ b/packages/0x.js/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "0.36.0",
+        "changes": [
+            {
+                "note": "Moved Web3.Provider to `@0xproject/types:Provider`",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "version": "0.35.0",
         "changes": [
             {
diff --git a/packages/0x.js/src/0x.ts b/packages/0x.js/src/0x.ts
index 774b9ac12..94d97c23e 100644
--- a/packages/0x.js/src/0x.ts
+++ b/packages/0x.js/src/0x.ts
@@ -1,5 +1,5 @@
 import { schemas, SchemaValidator } from '@0xproject/json-schemas';
-import { ECSignature, Order, SignedOrder, TransactionReceiptWithDecodedLogs } from '@0xproject/types';
+import { ECSignature, Order, Provider, SignedOrder, TransactionReceiptWithDecodedLogs } from '@0xproject/types';
 import { AbiDecoder, BigNumber, intervalUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as ethUtil from 'ethereumjs-util';
@@ -15,7 +15,7 @@ import { OrderStateWatcher } from './order_watcher/order_state_watcher';
 import { zeroExConfigSchema } from './schemas/zero_ex_config_schema';
 import { zeroExPrivateNetworkConfigSchema } from './schemas/zero_ex_private_network_config_schema';
 import { zeroExPublicNetworkConfigSchema } from './schemas/zero_ex_public_network_config_schema';
-import { OrderStateWatcherConfig, Web3Provider, ZeroExConfig, ZeroExError } from './types';
+import { OrderStateWatcherConfig, ZeroExConfig, ZeroExError } from './types';
 import { assert } from './utils/assert';
 import { constants } from './utils/constants';
 import { decorators } from './utils/decorators';
@@ -115,10 +115,8 @@ export class ZeroEx {
     public static toUnitAmount(amount: BigNumber, decimals: number): BigNumber {
         assert.isValidBaseUnitAmount('amount', amount);
         assert.isNumber('decimals', decimals);
-
-        const aUnit = new BigNumber(10).pow(decimals);
-        const unit = amount.div(aUnit);
-        return unit;
+        const unitAmount = Web3Wrapper.toUnitAmount(amount, decimals);
+        return unitAmount;
     }
     /**
      * A baseUnit is defined as the smallest denomination of a token. An amount expressed in baseUnits
@@ -131,13 +129,7 @@ export class ZeroEx {
     public static toBaseUnitAmount(amount: BigNumber, decimals: number): BigNumber {
         assert.isBigNumber('amount', amount);
         assert.isNumber('decimals', decimals);
-
-        const unit = new BigNumber(10).pow(decimals);
-        const baseUnitAmount = amount.times(unit);
-        const hasDecimals = baseUnitAmount.decimalPlaces() !== 0;
-        if (hasDecimals) {
-            throw new Error(`Invalid unit amount: ${amount.toString()} - Too many decimal places`);
-        }
+        const baseUnitAmount = Web3Wrapper.toBaseUnitAmount(amount, decimals);
         return baseUnitAmount;
     }
     /**
@@ -153,12 +145,12 @@ export class ZeroEx {
     }
     /**
      * Instantiates a new ZeroEx instance that provides the public interface to the 0x.js library.
-     * @param   provider    The Web3.js Provider instance you would like the 0x.js library to use for interacting with
+     * @param   provider    The Provider instance you would like the 0x.js library to use for interacting with
      *                      the Ethereum network.
      * @param   config      The configuration object. Look up the type for the description.
      * @return  An instance of the 0x.js ZeroEx class.
      */
-    constructor(provider: Web3Provider, config: ZeroExConfig) {
+    constructor(provider: Provider, config: ZeroExConfig) {
         assert.isWeb3Provider('provider', provider);
         assert.doesConformToSchema('config', config, zeroExConfigSchema, [
             zeroExPrivateNetworkConfigSchema,
@@ -199,7 +191,7 @@ export class ZeroEx {
      * @param   provider    The Web3Provider you would like the 0x.js library to use from now on.
      * @param   networkId   The id of the network your provider is connected to
      */
-    public setProvider(provider: Web3Provider, networkId: number): void {
+    public setProvider(provider: Provider, networkId: number): void {
         this._web3Wrapper.setProvider(provider);
         (this.exchange as any)._invalidateContractInstances();
         (this.exchange as any)._setNetworkId(networkId);
@@ -225,7 +217,7 @@ export class ZeroEx {
      * This method currently supports TestRPC, Geth and Parity above and below V1.6.6
      * @param   orderHash       Hex encoded orderHash to sign.
      * @param   signerAddress   The hex encoded Ethereum address you wish to sign it with. This address
-     *          must be available via the Web3.Provider supplied to 0x.js.
+     *          must be available via the Provider supplied to 0x.js.
      * @param   shouldAddPersonalMessagePrefix  Some signers add the personal message prefix `\x19Ethereum Signed Message`
      *          themselves (e.g Parity Signer, Ledger, TestRPC) and others expect it to already be done by the client
      *          (e.g Metamask). Depending on which signer this request is going to, decide on whether to add the prefix
diff --git a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
index f52dba2f1..fd39de34b 100644
--- a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -191,7 +191,12 @@ export class EtherTokenWrapper extends ContractWrapper {
             artifacts.EtherTokenArtifact,
             etherTokenAddress,
         );
-        const contractInstance = new EtherTokenContract(this._web3Wrapper, abi, address);
+        const contractInstance = new EtherTokenContract(
+            abi,
+            address,
+            this._web3Wrapper.getProvider(),
+            this._web3Wrapper.getContractDefaults(),
+        );
         etherTokenContract = contractInstance;
         this._etherTokenContractsByAddress[etherTokenAddress] = etherTokenContract;
         return etherTokenContract;
diff --git a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
index 53f32f111..378ae8111 100644
--- a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
@@ -170,7 +170,7 @@ export class ExchangeWrapper extends ContractWrapper {
      * @param   shouldThrowOnInsufficientBalanceOrAllowance Whether or not you wish for the contract call to throw
      *                                                      if upon execution the tokens cannot be transferred.
      * @param   takerAddress                                The user Ethereum address who would like to fill this order.
-     *                                                      Must be available via the supplied Web3.Provider
+     *                                                      Must be available via the supplied Provider
      *                                                      passed to 0x.js.
      * @param   orderTransactionOpts                        Optional arguments this method accepts.
      * @return  Transaction hash.
@@ -235,7 +235,7 @@ export class ExchangeWrapper extends ContractWrapper {
      *                                                      If set to false, the call will continue to fill subsequent
      *                                                      signedOrders even when some cannot be filled.
      * @param   takerAddress                                The user Ethereum address who would like to fill these
-     *                                                      orders. Must be available via the supplied Web3.Provider
+     *                                                      orders. Must be available via the supplied Provider
      *                                                      passed to 0x.js.
      * @param   orderTransactionOpts                        Optional arguments this method accepts.
      * @return  Transaction hash.
@@ -335,7 +335,7 @@ export class ExchangeWrapper extends ContractWrapper {
      *                                                          cannot be filled.
      * @param   takerAddress                                    The user Ethereum address who would like to fill
      *                                                          these orders. Must be available via the supplied
-     *                                                          Web3.Provider passed to 0x.js.
+     *                                                          Provider passed to 0x.js.
      * @param   orderTransactionOpts                            Optional arguments this method accepts.
      * @return  Transaction hash.
      */
@@ -416,7 +416,7 @@ export class ExchangeWrapper extends ContractWrapper {
      *                                  signedOrder you wish to fill.
      * @param   fillTakerTokenAmount    The total amount of the takerTokens you would like to fill.
      * @param   takerAddress            The user Ethereum address who would like to fill this order.
-     *                                  Must be available via the supplied Web3.Provider passed to 0x.js.
+     *                                  Must be available via the supplied Provider passed to 0x.js.
      * @param   orderTransactionOpts    Optional arguments this method accepts.
      * @return  Transaction hash.
      */
@@ -470,7 +470,7 @@ export class ExchangeWrapper extends ContractWrapper {
      * filled (each to the specified fillAmount) or aborted.
      * @param   orderFillRequests           An array of objects that conform to the OrderFillRequest interface.
      * @param   takerAddress                The user Ethereum address who would like to fill there orders.
-     *                                      Must be available via the supplied Web3.Provider passed to 0x.js.
+     *                                      Must be available via the supplied Provider passed to 0x.js.
      * @param   orderTransactionOpts        Optional arguments this method accepts.
      * @return  Transaction hash.
      */
@@ -765,7 +765,7 @@ export class ExchangeWrapper extends ContractWrapper {
      *                                  signedOrder you wish to fill.
      * @param   fillTakerTokenAmount    The total amount of the takerTokens you would like to fill.
      * @param   takerAddress            The user Ethereum address who would like to fill this order.
-     *                                  Must be available via the supplied Web3.Provider passed to 0x.js.
+     *                                  Must be available via the supplied Provider passed to 0x.js.
      */
     public async validateFillOrderThrowIfInvalidAsync(
         signedOrder: SignedOrder,
@@ -812,7 +812,7 @@ export class ExchangeWrapper extends ContractWrapper {
      *                                  signedOrder you wish to fill.
      * @param   fillTakerTokenAmount    The total amount of the takerTokens you would like to fill.
      * @param   takerAddress            The user Ethereum address who would like to fill this order.
-     *                                  Must be available via the supplied Web3.Provider passed to 0x.js.
+     *                                  Must be available via the supplied Provider passed to 0x.js.
      */
     public async validateFillOrKillOrderThrowIfInvalidAsync(
         signedOrder: SignedOrder,
@@ -920,7 +920,12 @@ export class ExchangeWrapper extends ContractWrapper {
             artifacts.ExchangeArtifact,
             this._contractAddressIfExists,
         );
-        const contractInstance = new ExchangeContract(this._web3Wrapper, abi, address);
+        const contractInstance = new ExchangeContract(
+            abi,
+            address,
+            this._web3Wrapper.getProvider(),
+            this._web3Wrapper.getContractDefaults(),
+        );
         this._exchangeContractIfExists = contractInstance;
         return this._exchangeContractIfExists;
     }
diff --git a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
index e1806c6f2..c4a193264 100644
--- a/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_registry_wrapper.ts
@@ -121,7 +121,12 @@ export class TokenRegistryWrapper extends ContractWrapper {
             artifacts.TokenRegistryArtifact,
             this._contractAddressIfExists,
         );
-        const contractInstance = new TokenRegistryContract(this._web3Wrapper, abi, address);
+        const contractInstance = new TokenRegistryContract(
+            abi,
+            address,
+            this._web3Wrapper.getProvider(),
+            this._web3Wrapper.getContractDefaults(),
+        );
         this._tokenRegistryContractIfExists = contractInstance;
         return this._tokenRegistryContractIfExists;
     }
diff --git a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
index 211c7dfb4..be558b5be 100644
--- a/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_transfer_proxy_wrapper.ts
@@ -63,7 +63,12 @@ export class TokenTransferProxyWrapper extends ContractWrapper {
             artifacts.TokenTransferProxyArtifact,
             this._contractAddressIfExists,
         );
-        const contractInstance = new TokenTransferProxyContract(this._web3Wrapper, abi, address);
+        const contractInstance = new TokenTransferProxyContract(
+            abi,
+            address,
+            this._web3Wrapper.getProvider(),
+            this._web3Wrapper.getContractDefaults(),
+        );
         this._tokenTransferProxyContractIfExists = contractInstance;
         return this._tokenTransferProxyContractIfExists;
     }
diff --git a/packages/0x.js/src/contract_wrappers/token_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
index 5224d451c..194cfb5aa 100644
--- a/packages/0x.js/src/contract_wrappers/token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
@@ -421,7 +421,12 @@ export class TokenWrapper extends ContractWrapper {
             artifacts.TokenArtifact,
             normalizedTokenAddress,
         );
-        const contractInstance = new TokenContract(this._web3Wrapper, abi, address);
+        const contractInstance = new TokenContract(
+            abi,
+            address,
+            this._web3Wrapper.getProvider(),
+            this._web3Wrapper.getContractDefaults(),
+        );
         tokenContract = contractInstance;
         this._tokenContractsByAddress[normalizedTokenAddress] = tokenContract;
         return tokenContract;
diff --git a/packages/0x.js/src/globals.d.ts b/packages/0x.js/src/globals.d.ts
index b9b691ba1..94e63a32d 100644
--- a/packages/0x.js/src/globals.d.ts
+++ b/packages/0x.js/src/globals.d.ts
@@ -1,10 +1,3 @@
-declare module 'web3_beta';
-
-// semver-sort declarations
-declare module 'semver-sort' {
-    const desc: (versions: string[]) => string[];
-}
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/0x.js/src/index.ts b/packages/0x.js/src/index.ts
index e353a1d3d..3b973bd54 100644
--- a/packages/0x.js/src/index.ts
+++ b/packages/0x.js/src/index.ts
@@ -11,7 +11,6 @@ export {
     OrderCancellationRequest,
     OrderFillRequest,
     ContractEventArgs,
-    Web3Provider,
     ZeroExConfig,
     MethodOpts,
     OrderTransactionOpts,
@@ -32,6 +31,7 @@ export {
     ContractEventArg,
     LogWithDecodedArgs,
     Order,
+    Provider,
     SignedOrder,
     ECSignature,
     TransactionReceipt,
diff --git a/packages/0x.js/src/types.ts b/packages/0x.js/src/types.ts
index 1f128d656..d1c643a57 100644
--- a/packages/0x.js/src/types.ts
+++ b/packages/0x.js/src/types.ts
@@ -154,14 +154,6 @@ export interface OrderFillRequest {
 export type AsyncMethod = (...args: any[]) => Promise<any>;
 export type SyncMethod = (...args: any[]) => any;
 
-/**
- * We re-export the `Web3.Provider` type specified in the Web3 Typescript typings
- * since it is the type of the `provider` argument to the `ZeroEx` constructor.
- * It is however a `Web3` library type, not a native `0x.js` type. To learn more
- * about providers, visit https://0xproject.com/wiki#Web3-Provider-Explained
- */
-export type Web3Provider = Web3.Provider;
-
 /*
  * orderExpirationCheckingIntervalMs: How often to check for expired orders. Default: 50
  * eventPollingIntervalMs: How often to poll the Ethereum node for new events. Default: 200
diff --git a/packages/0x.js/test/ether_token_wrapper_test.ts b/packages/0x.js/test/ether_token_wrapper_test.ts
index 6687c48e1..5be3eaff3 100644
--- a/packages/0x.js/test/ether_token_wrapper_test.ts
+++ b/packages/0x.js/test/ether_token_wrapper_test.ts
@@ -1,5 +1,6 @@
 import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import 'mocha';
 import * as Web3 from 'web3';
@@ -59,7 +60,7 @@ describe('EtherTokenWrapper', () => {
         userAddresses = await zeroEx.getAvailableAddressesAsync();
         addressWithETH = userAddresses[0];
         wethContractAddress = zeroEx.etherToken.getContractAddressIfExists() as string;
-        depositWeiAmount = (zeroEx as any)._web3Wrapper.toWei(new BigNumber(5));
+        depositWeiAmount = Web3Wrapper.toWei(new BigNumber(5));
         decimalPlaces = 7;
         addressWithoutFunds = userAddresses[1];
     });
@@ -105,7 +106,7 @@ describe('EtherTokenWrapper', () => {
         it('should throw if user has insufficient ETH balance for deposit', async () => {
             const preETHBalance = await (zeroEx as any)._web3Wrapper.getBalanceInWeiAsync(addressWithETH);
 
-            const extraETHBalance = (zeroEx as any)._web3Wrapper.toWei(5, 'ether');
+            const extraETHBalance = Web3Wrapper.toWei(new BigNumber(5));
             const overETHBalanceinWei = preETHBalance.add(extraETHBalance);
 
             return expect(
diff --git a/packages/0x.js/test/utils/fill_scenarios.ts b/packages/0x.js/test/utils/fill_scenarios.ts
index 25e2aa36f..cd68b7dfa 100644
--- a/packages/0x.js/test/utils/fill_scenarios.ts
+++ b/packages/0x.js/test/utils/fill_scenarios.ts
@@ -37,7 +37,12 @@ export class FillScenarios {
         for (const token of this._tokens) {
             if (token.symbol !== 'ZRX' && token.symbol !== 'WETH') {
                 const defaults = {};
-                const dummyToken = new DummyTokenContract(web3Wrapper, artifacts.DummyTokenArtifact.abi, token.address);
+                const dummyToken = new DummyTokenContract(
+                    artifacts.DummyTokenArtifact.abi,
+                    token.address,
+                    web3Wrapper.getProvider(),
+                    web3Wrapper.getContractDefaults(),
+                );
                 const tokenSupply = ZeroEx.toBaseUnitAmount(INITIAL_COINBASE_TOKEN_SUPPLY_IN_UNITS, token.decimals);
                 const txHash = await dummyToken.setBalance.sendTransactionAsync(this._coinbase, tokenSupply, {
                     from: this._coinbase,
diff --git a/packages/abi-gen/src/globals.d.ts b/packages/abi-gen/src/globals.d.ts
index d267a4106..94e63a32d 100644
--- a/packages/abi-gen/src/globals.d.ts
+++ b/packages/abi-gen/src/globals.d.ts
@@ -1,8 +1,3 @@
-declare function toSnakeCase(str: string): string;
-declare module 'to-snake-case' {
-    export = toSnakeCase;
-}
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/assert/src/index.ts b/packages/assert/src/index.ts
index 171909c93..938daab92 100644
--- a/packages/assert/src/index.ts
+++ b/packages/assert/src/index.ts
@@ -61,7 +61,7 @@ export const assert = {
     },
     isWeb3Provider(variableName: string, value: any): void {
         const isWeb3Provider = _.isFunction(value.send) || _.isFunction(value.sendAsync);
-        this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Web3.Provider', value));
+        this.assert(isWeb3Provider, this.typeAssertionMessage(variableName, 'Provider', value));
     },
     doesConformToSchema(variableName: string, value: any, schema: Schema, subSchemas?: Schema[]): void {
         const schemaValidator = new SchemaValidator();
diff --git a/packages/base-contract/CHANGELOG.json b/packages/base-contract/CHANGELOG.json
index bb7cf261f..da957ec83 100644
--- a/packages/base-contract/CHANGELOG.json
+++ b/packages/base-contract/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "0.2.0",
+        "changes": [
+            {
+                "note": "Contract wrappers now accept Provider and defaults instead of Web3Wrapper",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "version": "0.1.0",
         "changes": [
             {
diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index c8cbd7886..bba686f8b 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -1,4 +1,4 @@
-import { ContractAbi, DataItem, TxData, TxDataPayable } from '@0xproject/types';
+import { ContractAbi, DataItem, Provider, TxData, TxDataPayable } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as ethersContracts from 'ethers-contracts';
@@ -49,8 +49,8 @@ export class BaseContract {
         }
         return txDataWithDefaults;
     }
-    constructor(web3Wrapper: Web3Wrapper, abi: ContractAbi, address: string) {
-        this._web3Wrapper = web3Wrapper;
+    constructor(abi: ContractAbi, address: string, provider: Provider, defaults?: Partial<TxData>) {
+        this._web3Wrapper = new Web3Wrapper(provider, defaults);
         this.abi = abi;
         this.address = address;
         this._ethersInterface = new ethersContracts.Interface(abi);
diff --git a/packages/connect/src/globals.d.ts b/packages/connect/src/globals.d.ts
index dd659d094..783b92913 100644
--- a/packages/connect/src/globals.d.ts
+++ b/packages/connect/src/globals.d.ts
@@ -1,5 +1,3 @@
-declare module 'async-child-process';
-
 declare module '*.json' {
     const value: any;
     export default value;
diff --git a/packages/contract_templates/contract.handlebars b/packages/contract_templates/contract.handlebars
index da2639f78..3e3f87f10 100644
--- a/packages/contract_templates/contract.handlebars
+++ b/packages/contract_templates/contract.handlebars
@@ -5,7 +5,7 @@
 // tslint:disable:no-consecutive-blank-lines
 // tslint:disable-next-line:no-unused-variable
 import { BaseContract } from '@0xproject/base-contract';
-import { BlockParam, BlockParamLiteral, CallData, ContractAbi, DataItem, MethodAbi, TxData, TxDataPayable } from '@0xproject/types';
+import { BlockParam, BlockParamLiteral, CallData, ContractAbi, DataItem, MethodAbi, Provider, TxData, TxDataPayable } from '@0xproject/types';
 import { BigNumber, classUtils, promisify } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as ethersContracts from 'ethers-contracts';
@@ -39,8 +39,8 @@ export class {{contractName}}Contract extends BaseContract {
     {{> tx contractName=../contractName}}
     {{/this.constant}}
 {{/each}}
-    constructor(web3Wrapper: Web3Wrapper, abi: ContractAbi, address: string) {
-        super(web3Wrapper, abi, address);
+    constructor(abi: ContractAbi, address: string, provider: Provider, defaults?: Partial<TxData>) {
+        super(abi, address, provider, defaults);
         classUtils.bindAll(this, ['_ethersInterface', 'address', 'abi', '_web3Wrapper']);
     }
 } // tslint:disable:max-file-line-count
diff --git a/packages/contracts/test/ether_token.ts b/packages/contracts/test/ether_token.ts
index 6c7354c2b..4023abad0 100644
--- a/packages/contracts/test/ether_token.ts
+++ b/packages/contracts/test/ether_token.ts
@@ -9,7 +9,7 @@ import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -26,7 +26,7 @@ describe('EtherToken', () => {
 
         const etherToken = await deployer.deployAsync(ContractName.EtherToken);
         etherTokenAddress = etherToken.address;
-        zeroEx = new ZeroEx(web3.currentProvider, {
+        zeroEx = new ZeroEx(provider, {
             gasPrice,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
@@ -51,7 +51,7 @@ describe('EtherToken', () => {
             const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
-            const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
+            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
 
             const txHash = await zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account);
             const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
@@ -76,7 +76,7 @@ describe('EtherToken', () => {
         });
 
         it('should convert ether tokens to ether with sufficient balance', async () => {
-            const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
+            const ethToDeposit = new BigNumber(Web3Wrapper.toWei(new BigNumber(1)));
             await zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account);
             const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
             const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
diff --git a/packages/contracts/test/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index e276d11b3..689b11062 100644
--- a/packages/contracts/test/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -22,7 +22,7 @@ import { OrderFactory } from '../../util/order_factory';
 import { BalancesByOwner, ContractName, ExchangeContractErrs } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -59,22 +59,22 @@ describe('Exchange', () => {
             deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS),
             deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS),
         ]);
-        rep = new DummyTokenContract(web3Wrapper, repInstance.abi, repInstance.address);
-        dgd = new DummyTokenContract(web3Wrapper, dgdInstance.abi, dgdInstance.address);
-        zrx = new DummyTokenContract(web3Wrapper, zrxInstance.abi, zrxInstance.address);
+        rep = new DummyTokenContract(repInstance.abi, repInstance.address, provider);
+        dgd = new DummyTokenContract(dgdInstance.abi, dgdInstance.address, provider);
+        zrx = new DummyTokenContract(zrxInstance.abi, zrxInstance.address, provider);
         const tokenTransferProxyInstance = await deployer.deployAsync(ContractName.TokenTransferProxy);
         tokenTransferProxy = new TokenTransferProxyContract(
-            web3Wrapper,
             tokenTransferProxyInstance.abi,
             tokenTransferProxyInstance.address,
+            provider,
         );
         const exchangeInstance = await deployer.deployAsync(ContractName.Exchange, [
             zrx.address,
             tokenTransferProxy.address,
         ]);
-        exchange = new ExchangeContract(web3Wrapper, exchangeInstance.abi, exchangeInstance.address);
+        exchange = new ExchangeContract(exchangeInstance.abi, exchangeInstance.address, provider);
         await tokenTransferProxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, { from: accounts[0] });
-        zeroEx = new ZeroEx(web3.currentProvider, {
+        zeroEx = new ZeroEx(provider, {
             exchangeContractAddress: exchange.address,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
diff --git a/packages/contracts/test/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 080cbe5fd..8fc30c0b5 100644
--- a/packages/contracts/test/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -17,7 +17,7 @@ import { OrderFactory } from '../../util/order_factory';
 import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -46,9 +46,9 @@ describe('Exchange', () => {
             zrx.address,
             tokenTransferProxy.address,
         ]);
-        const exchange = new ExchangeContract(web3Wrapper, exchangeInstance.abi, exchangeInstance.address);
+        const exchange = new ExchangeContract(exchangeInstance.abi, exchangeInstance.address, provider);
         await tokenTransferProxy.addAuthorizedAddress(exchange.address, { from: accounts[0] });
-        const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+        const zeroEx = new ZeroEx(provider, { networkId: constants.TESTRPC_NETWORK_ID });
         exchangeWrapper = new ExchangeWrapper(exchange, zeroEx);
         const defaultOrderParams = {
             exchangeContractAddress: exchange.address,
diff --git a/packages/contracts/test/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index 0d3e18711..c658dca79 100644
--- a/packages/contracts/test/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -22,7 +22,7 @@ import { OrderFactory } from '../../util/order_factory';
 import { BalancesByOwner, ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -59,28 +59,24 @@ describe('Exchange', () => {
             deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS),
             deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS),
         ]);
-        rep = new DummyTokenContract(web3Wrapper, repInstance.abi, repInstance.address);
-        dgd = new DummyTokenContract(web3Wrapper, dgdInstance.abi, dgdInstance.address);
-        zrx = new DummyTokenContract(web3Wrapper, zrxInstance.abi, zrxInstance.address);
+        rep = new DummyTokenContract(repInstance.abi, repInstance.address, provider);
+        dgd = new DummyTokenContract(dgdInstance.abi, dgdInstance.address, provider);
+        zrx = new DummyTokenContract(zrxInstance.abi, zrxInstance.address, provider);
         const tokenRegistryInstance = await deployer.deployAsync(ContractName.TokenRegistry);
-        tokenRegistry = new TokenRegistryContract(
-            web3Wrapper,
-            tokenRegistryInstance.abi,
-            tokenRegistryInstance.address,
-        );
+        tokenRegistry = new TokenRegistryContract(tokenRegistryInstance.abi, tokenRegistryInstance.address, provider);
         const tokenTransferProxyInstance = await deployer.deployAsync(ContractName.TokenTransferProxy);
         tokenTransferProxy = new TokenTransferProxyContract(
-            web3Wrapper,
             tokenTransferProxyInstance.abi,
             tokenTransferProxyInstance.address,
+            provider,
         );
         const exchangeInstance = await deployer.deployAsync(ContractName.Exchange, [
             zrx.address,
             tokenTransferProxy.address,
         ]);
-        exchange = new ExchangeContract(web3Wrapper, exchangeInstance.abi, exchangeInstance.address);
+        exchange = new ExchangeContract(exchangeInstance.abi, exchangeInstance.address, provider);
         await tokenTransferProxy.addAuthorizedAddress.sendTransactionAsync(exchange.address, { from: accounts[0] });
-        const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+        const zeroEx = new ZeroEx(provider, { networkId: constants.TESTRPC_NETWORK_ID });
         exWrapper = new ExchangeWrapper(exchange, zeroEx);
 
         const defaultOrderParams = {
diff --git a/packages/contracts/test/multi_sig_with_time_lock.ts b/packages/contracts/test/multi_sig_with_time_lock.ts
index e322242cc..b7604457f 100644
--- a/packages/contracts/test/multi_sig_with_time_lock.ts
+++ b/packages/contracts/test/multi_sig_with_time_lock.ts
@@ -15,13 +15,13 @@ import { ContractName, SubmissionContractEventArgs } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 const MULTI_SIG_ABI = artifacts.MultiSigWalletWithTimeLockArtifact.networks[constants.TESTRPC_NETWORK_ID].abi;
 chaiSetup.configure();
 const expect = chai.expect;
 const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
-const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+const zeroEx = new ZeroEx(provider, { networkId: constants.TESTRPC_NETWORK_ID });
 const abiDecoder = new AbiDecoder([MULTI_SIG_ABI]);
 
 describe('MultiSigWalletWithTimeLock', () => {
@@ -53,9 +53,9 @@ describe('MultiSigWalletWithTimeLock', () => {
                     0,
                 ]);
                 multiSig = new MultiSigWalletWithTimeLockContract(
-                    web3Wrapper,
                     multiSigInstance.abi,
                     multiSigInstance.address,
+                    provider,
                 );
                 multiSigWrapper = new MultiSigWrapper((multiSig as any) as MultiSigWalletContract);
 
@@ -150,9 +150,9 @@ describe('MultiSigWalletWithTimeLock', () => {
                     SECONDS_TIME_LOCKED,
                 ]);
                 multiSig = new MultiSigWalletWithTimeLockContract(
-                    web3Wrapper,
                     multiSigInstance.abi,
                     multiSigInstance.address,
+                    provider,
                 );
                 multiSigWrapper = new MultiSigWrapper((multiSig as any) as MultiSigWalletContract);
 
diff --git a/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts b/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
index 6d20a67f3..2f928ede2 100644
--- a/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
+++ b/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
@@ -16,7 +16,7 @@ import { ContractName, SubmissionContractEventArgs, TransactionDataParams } from
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 const PROXY_ABI = artifacts.TokenTransferProxyArtifact.networks[constants.TESTRPC_NETWORK_ID].abi;
 const MUTISIG_WALLET_WITH_TIME_LOCK_EXCEPT_REMOVE_AUTHORIZED_ADDRESS_ABI =
     artifacts.MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddressArtifact.networks[constants.TESTRPC_NETWORK_ID]
@@ -28,7 +28,7 @@ const blockchainLifecycle = new BlockchainLifecycle(web3Wrapper);
 const abiDecoder = new AbiDecoder([MUTISIG_WALLET_WITH_TIME_LOCK_EXCEPT_REMOVE_AUTHORIZED_ADDRESS_ABI]);
 
 describe('MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress', () => {
-    const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+    const zeroEx = new ZeroEx(provider, { networkId: constants.TESTRPC_NETWORK_ID });
     let owners: string[];
     const requiredApprovals = 2;
     const SECONDS_TIME_LOCKED = 1000000;
@@ -49,9 +49,9 @@ describe('MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress', () => {
         const initialOwner = accounts[0];
         const tokenTransferProxyInstance = await deployer.deployAsync(ContractName.TokenTransferProxy);
         tokenTransferProxy = new TokenTransferProxyContract(
-            web3Wrapper,
             tokenTransferProxyInstance.abi,
             tokenTransferProxyInstance.address,
+            provider,
         );
         await tokenTransferProxy.addAuthorizedAddress.sendTransactionAsync(authorizedAddress, {
             from: initialOwner,
@@ -61,9 +61,9 @@ describe('MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress', () => {
             [owners, requiredApprovals, SECONDS_TIME_LOCKED, tokenTransferProxy.address],
         );
         multiSig = new MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddressContract(
-            web3Wrapper,
             multiSigInstance.abi,
             multiSigInstance.address,
+            provider,
         );
         await tokenTransferProxy.transferOwnership.sendTransactionAsync(multiSig.address, {
             from: initialOwner,
diff --git a/packages/contracts/test/token_registry.ts b/packages/contracts/test/token_registry.ts
index 9dcc77b82..12fc52dbc 100644
--- a/packages/contracts/test/token_registry.ts
+++ b/packages/contracts/test/token_registry.ts
@@ -14,7 +14,7 @@ import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -30,7 +30,7 @@ describe('TokenRegistry', () => {
         owner = accounts[0];
         notOwner = accounts[1];
         const tokenRegInstance = await deployer.deployAsync(ContractName.TokenRegistry);
-        tokenReg = new TokenRegistryContract(web3Wrapper, tokenRegInstance.abi, tokenRegInstance.address);
+        tokenReg = new TokenRegistryContract(tokenRegInstance.abi, tokenRegInstance.address, provider);
         tokenRegWrapper = new TokenRegWrapper(tokenReg);
     });
     beforeEach(async () => {
diff --git a/packages/contracts/test/token_transfer_proxy/auth.ts b/packages/contracts/test/token_transfer_proxy/auth.ts
index a1ccc6ff7..885ff3bc1 100644
--- a/packages/contracts/test/token_transfer_proxy/auth.ts
+++ b/packages/contracts/test/token_transfer_proxy/auth.ts
@@ -8,7 +8,7 @@ import { constants } from '../../util/constants';
 import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -25,9 +25,9 @@ describe('TokenTransferProxy', () => {
         notOwner = accounts[1];
         const tokenTransferProxyInstance = await deployer.deployAsync(ContractName.TokenTransferProxy);
         tokenTransferProxy = new TokenTransferProxyContract(
-            web3Wrapper,
             tokenTransferProxyInstance.abi,
             tokenTransferProxyInstance.address,
+            provider,
         );
     });
     beforeEach(async () => {
diff --git a/packages/contracts/test/token_transfer_proxy/transfer_from.ts b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
index 415d068be..dff1a0cfb 100644
--- a/packages/contracts/test/token_transfer_proxy/transfer_from.ts
+++ b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
@@ -11,7 +11,7 @@ import { constants } from '../../util/constants';
 import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -33,12 +33,12 @@ describe('TokenTransferProxy', () => {
         owner = notAuthorized = accounts[0];
         const tokenTransferProxyInstance = await deployer.deployAsync(ContractName.TokenTransferProxy);
         tokenTransferProxy = new TokenTransferProxyContract(
-            web3Wrapper,
             tokenTransferProxyInstance.abi,
             tokenTransferProxyInstance.address,
+            provider,
         );
         const repInstance = await deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS);
-        rep = new DummyTokenContract(web3Wrapper, repInstance.abi, repInstance.address);
+        rep = new DummyTokenContract(repInstance.abi, repInstance.address, provider);
 
         dmyBalances = new Balances([rep], [accounts[0], accounts[1]]);
         await Promise.all([
diff --git a/packages/contracts/test/tutorials/arbitrage.ts b/packages/contracts/test/tutorials/arbitrage.ts
index b2bbaf420..ad83bbca3 100644
--- a/packages/contracts/test/tutorials/arbitrage.ts
+++ b/packages/contracts/test/tutorials/arbitrage.ts
@@ -17,7 +17,7 @@ import { OrderFactory } from '../../util/order_factory';
 import { BalancesByOwner, ContractName, ExchangeContractErrs } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
 import { deployer } from '../utils/deployer';
-import { web3, web3Wrapper } from '../utils/web3_wrapper';
+import { provider, web3Wrapper } from '../utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -69,18 +69,18 @@ describe('Arbitrage', () => {
             edTakerFee,
             edFeeRebate,
         ]);
-        etherDelta = new EtherDeltaContract(web3Wrapper, etherDeltaInstance.abi, etherDeltaInstance.address);
+        etherDelta = new EtherDeltaContract(etherDeltaInstance.abi, etherDeltaInstance.address, provider);
         const tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
         const exchangeInstance = await deployer.deployAsync(ContractName.Exchange, [
             zrx.address,
             tokenTransferProxy.address,
         ]);
         await tokenTransferProxy.addAuthorizedAddress(exchangeInstance.address, { from: accounts[0] });
-        zeroEx = new ZeroEx(web3.currentProvider, {
+        zeroEx = new ZeroEx(provider, {
             exchangeContractAddress: exchangeInstance.address,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
-        const exchange = new ExchangeContract(web3Wrapper, exchangeInstance.abi, exchangeInstance.address);
+        const exchange = new ExchangeContract(exchangeInstance.abi, exchangeInstance.address, provider);
         exWrapper = new ExchangeWrapper(exchange, zeroEx);
 
         makerTokenAmount = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
@@ -102,7 +102,7 @@ describe('Arbitrage', () => {
             etherDelta.address,
             tokenTransferProxy.address,
         ]);
-        arbitrage = new ArbitrageContract(web3Wrapper, arbitrageInstance.abi, arbitrageInstance.address);
+        arbitrage = new ArbitrageContract(arbitrageInstance.abi, arbitrageInstance.address, provider);
         // Enable arbitrage and withdrawals of tokens
         await arbitrage.setAllowances.sendTransactionAsync(weth.address, { from: coinbase });
         await arbitrage.setAllowances.sendTransactionAsync(zrx.address, { from: coinbase });
diff --git a/packages/contracts/test/unlimited_allowance_token.ts b/packages/contracts/test/unlimited_allowance_token.ts
index c1c518adc..618bda72d 100644
--- a/packages/contracts/test/unlimited_allowance_token.ts
+++ b/packages/contracts/test/unlimited_allowance_token.ts
@@ -11,7 +11,7 @@ import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -23,7 +23,7 @@ describe('UnlimitedAllowanceToken', () => {
     const config = {
         networkId: constants.TESTRPC_NETWORK_ID,
     };
-    const zeroEx = new ZeroEx(web3.currentProvider, config);
+    const zeroEx = new ZeroEx(provider, config);
 
     const MAX_MINT_VALUE = new BigNumber(100000000000000000000);
     let tokenAddress: string;
@@ -34,7 +34,7 @@ describe('UnlimitedAllowanceToken', () => {
         owner = accounts[0];
         spender = accounts[1];
         const tokenInstance = await deployer.deployAsync(ContractName.DummyToken, constants.DUMMY_TOKEN_ARGS);
-        token = new DummyTokenContract(web3Wrapper, tokenInstance.abi, tokenInstance.address);
+        token = new DummyTokenContract(tokenInstance.abi, tokenInstance.address, provider);
         await token.mint.sendTransactionAsync(MAX_MINT_VALUE, { from: owner });
         tokenAddress = token.address;
     });
diff --git a/packages/contracts/test/utils/deployer.ts b/packages/contracts/test/utils/deployer.ts
index 1baa47f09..45f79a2a4 100644
--- a/packages/contracts/test/utils/deployer.ts
+++ b/packages/contracts/test/utils/deployer.ts
@@ -7,9 +7,8 @@ import { constants } from '../../util/constants';
 import { web3 } from './web3_wrapper';
 
 const deployerOpts = {
-    web3Provider: web3.currentProvider,
+    provider: web3.currentProvider,
     artifactsDir: path.resolve('src', 'artifacts'),
-    jsonrpcUrl: devConstants.RPC_URL,
     networkId: constants.TESTRPC_NETWORK_ID,
     defaults: {
         gas: devConstants.GAS_ESTIMATE,
diff --git a/packages/contracts/test/utils/web3_wrapper.ts b/packages/contracts/test/utils/web3_wrapper.ts
index 35a8095a6..1a711dad2 100644
--- a/packages/contracts/test/utils/web3_wrapper.ts
+++ b/packages/contracts/test/utils/web3_wrapper.ts
@@ -3,4 +3,5 @@ import { Web3Wrapper } from '@0xproject/web3-wrapper';
 
 const web3ProviderConfig = { shouldUseInProcessGanache: true };
 export const web3 = web3Factory.create(web3ProviderConfig);
-export const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+export const provider = web3.currentProvider;
+export const web3Wrapper = new Web3Wrapper(provider);
diff --git a/packages/contracts/test/zrx_token.ts b/packages/contracts/test/zrx_token.ts
index a4cc3c2fc..b01615b39 100644
--- a/packages/contracts/test/zrx_token.ts
+++ b/packages/contracts/test/zrx_token.ts
@@ -11,7 +11,7 @@ import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3, web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 chaiSetup.configure();
 const expect = chai.expect;
@@ -31,11 +31,11 @@ describe('ZRXToken', () => {
         const accounts = await web3Wrapper.getAvailableAddressesAsync();
         owner = accounts[0];
         spender = accounts[1];
-        zeroEx = new ZeroEx(web3.currentProvider, {
+        zeroEx = new ZeroEx(provider, {
             networkId: constants.TESTRPC_NETWORK_ID,
         });
         const zrxInstance = await deployer.deployAsync(ContractName.ZRXToken);
-        zrx = new ZRXTokenContract(web3Wrapper, zrxInstance.abi, zrxInstance.address);
+        zrx = new ZRXTokenContract(zrxInstance.abi, zrxInstance.address, provider);
         zrxAddress = zrx.address;
         MAX_UINT = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
     });
diff --git a/packages/deployer/CHANGELOG.json b/packages/deployer/CHANGELOG.json
index 72f35a93d..f9691466b 100644
--- a/packages/deployer/CHANGELOG.json
+++ b/packages/deployer/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "0.4.0",
+        "changes": [
+            {
+                "note": "Changed the config key `web3Provider` to `provider` to be consistent with other tools",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "version": "0.3.5",
         "changes": [
             {
diff --git a/packages/deployer/src/deployer.ts b/packages/deployer/src/deployer.ts
index 7ee45fed5..84392997c 100644
--- a/packages/deployer/src/deployer.ts
+++ b/packages/deployer/src/deployer.ts
@@ -1,4 +1,4 @@
-import { AbiType, ConstructorAbi, ContractAbi, TxData } from '@0xproject/types';
+import { AbiType, ConstructorAbi, ContractAbi, Provider, TxData } from '@0xproject/types';
 import { logUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
@@ -38,15 +38,15 @@ export class Deployer {
         this._artifactsDir = opts.artifactsDir;
         this._networkId = opts.networkId;
         this._defaults = opts.defaults;
-        let web3Provider: Web3.Provider;
-        if (_.isUndefined((opts as ProviderDeployerOptions).web3Provider)) {
+        let web3Provider: Provider;
+        if (_.isUndefined((opts as ProviderDeployerOptions).provider)) {
             const jsonrpcUrl = (opts as UrlDeployerOptions).jsonrpcUrl;
             if (_.isUndefined(jsonrpcUrl)) {
                 throw new Error(`Deployer options don't contain web3Provider nor jsonrpcUrl. Please pass one of them`);
             }
             web3Provider = new Web3.providers.HttpProvider(jsonrpcUrl);
         } else {
-            web3Provider = (opts as ProviderDeployerOptions).web3Provider;
+            web3Provider = (opts as ProviderDeployerOptions).provider;
         }
         this.web3Wrapper = new Web3Wrapper(web3Provider, this._defaults);
     }
diff --git a/packages/deployer/src/utils/types.ts b/packages/deployer/src/utils/types.ts
index 7cb3958cb..7d131f5ce 100644
--- a/packages/deployer/src/utils/types.ts
+++ b/packages/deployer/src/utils/types.ts
@@ -1,4 +1,4 @@
-import { ContractAbi, TxData } from '@0xproject/types';
+import { ContractAbi, Provider, TxData } from '@0xproject/types';
 import * as Web3 from 'web3';
 import * as yargs from 'yargs';
 
@@ -65,7 +65,7 @@ export interface BaseDeployerOptions {
 }
 
 export interface ProviderDeployerOptions extends BaseDeployerOptions {
-    web3Provider: Web3.Provider;
+    provider: Provider;
 }
 
 export interface UrlDeployerOptions extends BaseDeployerOptions {
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) {
diff --git a/packages/metacoin/test/metacoin_test.ts b/packages/metacoin/test/metacoin_test.ts
index f2b396ac2..73537d342 100644
--- a/packages/metacoin/test/metacoin_test.ts
+++ b/packages/metacoin/test/metacoin_test.ts
@@ -8,7 +8,7 @@ import { MetacoinContract, TransferContractEventArgs } from '../src/contract_wra
 
 import { chaiSetup } from './utils/chai_setup';
 import { deployer } from './utils/deployer';
-import { web3Wrapper } from './utils/web3_wrapper';
+import { provider, web3Wrapper } from './utils/web3_wrapper';
 
 chaiSetup.configure();
 const { expect } = chai;
@@ -21,7 +21,7 @@ describe('Metacoin', () => {
     before(async () => {
         const metacoinInstance = await deployer.deployAsync('Metacoin');
         web3Wrapper.abiDecoder.addABI(metacoinInstance.abi);
-        metacoin = new MetacoinContract(web3Wrapper, metacoinInstance.abi, metacoinInstance.address);
+        metacoin = new MetacoinContract(metacoinInstance.abi, metacoinInstance.address, provider);
     });
     beforeEach(async () => {
         await blockchainLifecycle.startAsync();
diff --git a/packages/metacoin/test/utils/deployer.ts b/packages/metacoin/test/utils/deployer.ts
index 7916c8541..5a631fa0a 100644
--- a/packages/metacoin/test/utils/deployer.ts
+++ b/packages/metacoin/test/utils/deployer.ts
@@ -6,7 +6,7 @@ import { config } from './config';
 import { web3Wrapper } from './web3_wrapper';
 
 const deployerOpts = {
-    web3Provider: web3Wrapper.getProvider(),
+    provider: web3Wrapper.getProvider(),
     artifactsDir: config.artifactsDir,
     networkId: config.networkId,
     defaults: {
diff --git a/packages/metacoin/test/utils/web3_wrapper.ts b/packages/metacoin/test/utils/web3_wrapper.ts
index 23bd62b93..b4bb61f09 100644
--- a/packages/metacoin/test/utils/web3_wrapper.ts
+++ b/packages/metacoin/test/utils/web3_wrapper.ts
@@ -8,12 +8,12 @@ import ProviderEngine = require('web3-provider-engine');
 import { config } from './config';
 import { coverage } from './coverage';
 
-export const web3Provider = new ProviderEngine();
+export const provider = new ProviderEngine();
 const isCoverageEnabled = env.parseBoolean(EnvVars.SolidityCoverage);
 if (isCoverageEnabled) {
-    web3Provider.addProvider(coverage.getCoverageSubproviderSingleton());
+    provider.addProvider(coverage.getCoverageSubproviderSingleton());
 }
-web3Provider.addProvider(
+provider.addProvider(
     new GanacheSubprovider({
         logger: {
             log: (arg: any) => {
@@ -25,6 +25,6 @@ web3Provider.addProvider(
         mnemonic: config.mnemonic,
     }),
 );
-web3Provider.start();
+provider.start();
 
-export const web3Wrapper = new Web3Wrapper(web3Provider);
+export const web3Wrapper = new Web3Wrapper(provider);
diff --git a/packages/monorepo-scripts/src/find_unused_dependencies.ts b/packages/monorepo-scripts/src/find_unused_dependencies.ts
index 374cba2e3..bfc38044c 100644
--- a/packages/monorepo-scripts/src/find_unused_dependencies.ts
+++ b/packages/monorepo-scripts/src/find_unused_dependencies.ts
@@ -1,6 +1,6 @@
 #!/usr/bin/env node
 
-import * as depcheck from 'depcheck';
+import * as depcheckAsync from 'depcheck';
 import * as fs from 'fs';
 import lernaGetPackages = require('lerna-get-packages');
 import * as _ from 'lodash';
@@ -23,9 +23,9 @@ const IGNORE_PACKAGES = ['@0xproject/deployer'];
         utils.log(`Checking ${lernaPackage.package.name} for unused deps. This might take a while...`);
 
         const configs = {};
-        const result = await depcheckAsync(lernaPackage.location, configs);
-        if (!_.isEmpty(result.dependencies)) {
-            _.each(result.dependencies, dep => {
+        const { dependencies } = await depcheckAsync(lernaPackage.location, configs);
+        if (!_.isEmpty(dependencies)) {
+            _.each(dependencies, dep => {
                 utils.log(dep);
             });
         }
@@ -35,11 +35,3 @@ const IGNORE_PACKAGES = ['@0xproject/deployer'];
     utils.log(err);
     process.exit(1);
 });
-
-async function depcheckAsync(path: string, opts: any): Promise<depcheck.Results> {
-    return new Promise<depcheck.Results>((resolve, reject) => {
-        depcheck(path, opts, (unused: any) => {
-            resolve(unused);
-        });
-    });
-}
diff --git a/packages/react-docs/src/globals.d.ts b/packages/react-docs/src/globals.d.ts
index c7cd53854..94e63a32d 100644
--- a/packages/react-docs/src/globals.d.ts
+++ b/packages/react-docs/src/globals.d.ts
@@ -1,11 +1,3 @@
-declare module 'react-tooltip';
-
-// compare-version declarations
-declare function compareVersions(firstVersion: string, secondVersion: string): number;
-declare module 'compare-versions' {
-    export = compareVersions;
-}
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/react-shared/src/globals.d.ts b/packages/react-shared/src/globals.d.ts
index 525563e23..94e63a32d 100644
--- a/packages/react-shared/src/globals.d.ts
+++ b/packages/react-shared/src/globals.d.ts
@@ -1,11 +1,3 @@
-declare module 'react-highlight';
-
-// is-mobile declarations
-declare function isMobile(): boolean;
-declare module 'is-mobile' {
-    export = isMobile;
-}
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/sol-cov/src/globals.d.ts b/packages/sol-cov/src/globals.d.ts
index 368e908b4..e799b3529 100644
--- a/packages/sol-cov/src/globals.d.ts
+++ b/packages/sol-cov/src/globals.d.ts
@@ -5,318 +5,3 @@ declare module '*.json' {
     export default json;
     /* tslint:enable */
 }
-
-declare module 'solidity-parser-antlr' {
-    export interface BaseASTNode {
-        range: [number, number];
-    }
-    export interface SourceUnit extends BaseASTNode {}
-    export interface PragmaDirective extends BaseASTNode {}
-    export interface PragmaName extends BaseASTNode {}
-    export interface PragmaValue extends BaseASTNode {}
-    export interface Version extends BaseASTNode {}
-    export interface VersionOperator extends BaseASTNode {}
-    export interface VersionConstraint extends BaseASTNode {}
-    export interface ImportDeclaration extends BaseASTNode {}
-    export interface ImportDirective extends BaseASTNode {}
-    export interface ContractDefinition extends BaseASTNode {}
-    export interface InheritanceSpecifier extends BaseASTNode {}
-    export interface ContractPart extends BaseASTNode {}
-    export interface StateVariableDeclaration extends BaseASTNode {
-        variables: VariableDeclaration[];
-    }
-    export interface UsingForDeclaration extends BaseASTNode {}
-    export interface StructDefinition extends BaseASTNode {}
-    export interface ModifierDefinition extends BaseASTNode {
-        name: string;
-    }
-    export interface ModifierInvocation extends BaseASTNode {
-        name: string;
-    }
-    export interface FunctionDefinition extends BaseASTNode {
-        name: string;
-    }
-    export interface ReturnParameters extends BaseASTNode {}
-    export interface ModifierList extends BaseASTNode {}
-    export interface EventDefinition extends BaseASTNode {}
-    export interface EnumValue extends BaseASTNode {}
-    export interface EnumDefinition extends BaseASTNode {}
-    export interface ParameterList extends BaseASTNode {}
-    export interface Parameter extends BaseASTNode {}
-    export interface EventParameterList extends BaseASTNode {}
-    export interface EventParameter extends BaseASTNode {}
-    export interface FunctionTypeParameterList extends BaseASTNode {}
-    export interface FunctionTypeParameter extends BaseASTNode {}
-    export interface VariableDeclaration extends BaseASTNode {
-        visibility: 'public' | 'private';
-        isStateVar: boolean;
-    }
-    export interface TypeName extends BaseASTNode {}
-    export interface UserDefinedTypeName extends BaseASTNode {}
-    export interface Mapping extends BaseASTNode {}
-    export interface FunctionTypeName extends BaseASTNode {}
-    export interface StorageLocation extends BaseASTNode {}
-    export interface StateMutability extends BaseASTNode {}
-    export interface Block extends BaseASTNode {}
-    export interface Statement extends BaseASTNode {}
-    export interface ExpressionStatement extends BaseASTNode {
-        expression: ASTNode;
-    }
-    export interface IfStatement extends BaseASTNode {
-        trueBody: ASTNode;
-        falseBody: ASTNode;
-    }
-    export interface WhileStatement extends BaseASTNode {}
-    export interface SimpleStatement extends BaseASTNode {}
-    export interface ForStatement extends BaseASTNode {}
-    export interface InlineAssemblyStatement extends BaseASTNode {}
-    export interface DoWhileStatement extends BaseASTNode {}
-    export interface ContinueStatement extends BaseASTNode {}
-    export interface BreakStatement extends BaseASTNode {}
-    export interface ReturnStatement extends BaseASTNode {}
-    export interface ThrowStatement extends BaseASTNode {}
-    export interface VariableDeclarationStatement extends BaseASTNode {}
-    export interface IdentifierList extends BaseASTNode {}
-    export interface ElementaryTypeName extends BaseASTNode {}
-    export interface Expression extends BaseASTNode {}
-    export interface PrimaryExpression extends BaseASTNode {}
-    export interface ExpressionList extends BaseASTNode {}
-    export interface NameValueList extends BaseASTNode {}
-    export interface NameValue extends BaseASTNode {}
-    export interface FunctionCallArguments extends BaseASTNode {}
-    export interface AssemblyBlock extends BaseASTNode {}
-    export interface AssemblyItem extends BaseASTNode {}
-    export interface AssemblyExpression extends BaseASTNode {}
-    export interface AssemblyCall extends BaseASTNode {}
-    export interface AssemblyLocalDefinition extends BaseASTNode {}
-    export interface AssemblyAssignment extends BaseASTNode {}
-    export interface AssemblyIdentifierOrList extends BaseASTNode {}
-    export interface AssemblyIdentifierList extends BaseASTNode {}
-    export interface AssemblyStackAssignment extends BaseASTNode {}
-    export interface LabelDefinition extends BaseASTNode {}
-    export interface AssemblySwitch extends BaseASTNode {}
-    export interface AssemblyCase extends BaseASTNode {}
-    export interface AssemblyFunctionDefinition extends BaseASTNode {}
-    export interface AssemblyFunctionReturns extends BaseASTNode {}
-    export interface AssemblyFor extends BaseASTNode {}
-    export interface AssemblyIf extends BaseASTNode {}
-    export interface AssemblyLiteral extends BaseASTNode {}
-    export interface SubAssembly extends BaseASTNode {}
-    export interface TupleExpression extends BaseASTNode {}
-    export interface ElementaryTypeNameExpression extends BaseASTNode {}
-    export interface NumberLiteral extends BaseASTNode {}
-    export interface Identifier extends BaseASTNode {}
-    export type BinOp =
-        | '+'
-        | '-'
-        | '*'
-        | '/'
-        | '**'
-        | '%'
-        | '<<'
-        | '>>'
-        | '&&'
-        | '||'
-        | '&'
-        | '|'
-        | '^'
-        | '<'
-        | '>'
-        | '<='
-        | '>='
-        | '=='
-        | '!='
-        | '='
-        | '|='
-        | '^='
-        | '&='
-        | '<<='
-        | '>>='
-        | '+='
-        | '-='
-        | '*='
-        | '/='
-        | '%=';
-    export interface BinaryOperation extends BaseASTNode {
-        left: ASTNode;
-        right: ASTNode;
-        operator: BinOp;
-    }
-    export interface Conditional extends BaseASTNode {
-        trueExpression: ASTNode;
-        falseExpression: ASTNode;
-    }
-
-    export type ASTNode =
-        | SourceUnit
-        | PragmaDirective
-        | PragmaName
-        | PragmaValue
-        | Version
-        | VersionOperator
-        | VersionConstraint
-        | ImportDeclaration
-        | ImportDirective
-        | ContractDefinition
-        | InheritanceSpecifier
-        | ContractPart
-        | StateVariableDeclaration
-        | UsingForDeclaration
-        | StructDefinition
-        | ModifierDefinition
-        | ModifierInvocation
-        | FunctionDefinition
-        | ReturnParameters
-        | ModifierList
-        | EventDefinition
-        | EnumValue
-        | EnumDefinition
-        | ParameterList
-        | Parameter
-        | EventParameterList
-        | EventParameter
-        | FunctionTypeParameterList
-        | FunctionTypeParameter
-        | VariableDeclaration
-        | TypeName
-        | UserDefinedTypeName
-        | Mapping
-        | FunctionTypeName
-        | StorageLocation
-        | StateMutability
-        | Block
-        | Statement
-        | ExpressionStatement
-        | IfStatement
-        | WhileStatement
-        | SimpleStatement
-        | ForStatement
-        | InlineAssemblyStatement
-        | DoWhileStatement
-        | ContinueStatement
-        | BreakStatement
-        | ReturnStatement
-        | ThrowStatement
-        | VariableDeclarationStatement
-        | IdentifierList
-        | ElementaryTypeName
-        | Expression
-        | PrimaryExpression
-        | ExpressionList
-        | NameValueList
-        | NameValue
-        | FunctionCallArguments
-        | AssemblyBlock
-        | AssemblyItem
-        | AssemblyExpression
-        | AssemblyCall
-        | AssemblyLocalDefinition
-        | AssemblyAssignment
-        | AssemblyIdentifierOrList
-        | AssemblyIdentifierList
-        | AssemblyStackAssignment
-        | LabelDefinition
-        | AssemblySwitch
-        | AssemblyCase
-        | AssemblyFunctionDefinition
-        | AssemblyFunctionReturns
-        | AssemblyFor
-        | AssemblyIf
-        | AssemblyLiteral
-        | SubAssembly
-        | TupleExpression
-        | ElementaryTypeNameExpression
-        | NumberLiteral
-        | Identifier
-        | BinaryOperation
-        | Conditional;
-    export interface Visitor {
-        SourceUnit?: (node: SourceUnit) => void;
-        PragmaDirective?: (node: PragmaDirective) => void;
-        PragmaName?: (node: PragmaName) => void;
-        PragmaValue?: (node: PragmaValue) => void;
-        Version?: (node: Version) => void;
-        VersionOperator?: (node: VersionOperator) => void;
-        VersionConstraint?: (node: VersionConstraint) => void;
-        ImportDeclaration?: (node: ImportDeclaration) => void;
-        ImportDirective?: (node: ImportDirective) => void;
-        ContractDefinition?: (node: ContractDefinition) => void;
-        InheritanceSpecifier?: (node: InheritanceSpecifier) => void;
-        ContractPart?: (node: ContractPart) => void;
-        StateVariableDeclaration?: (node: StateVariableDeclaration) => void;
-        UsingForDeclaration?: (node: UsingForDeclaration) => void;
-        StructDefinition?: (node: StructDefinition) => void;
-        ModifierDefinition?: (node: ModifierDefinition) => void;
-        ModifierInvocation?: (node: ModifierInvocation) => void;
-        FunctionDefinition?: (node: FunctionDefinition) => void;
-        ReturnParameters?: (node: ReturnParameters) => void;
-        ModifierList?: (node: ModifierList) => void;
-        EventDefinition?: (node: EventDefinition) => void;
-        EnumValue?: (node: EnumValue) => void;
-        EnumDefinition?: (node: EnumDefinition) => void;
-        ParameterList?: (node: ParameterList) => void;
-        Parameter?: (node: Parameter) => void;
-        EventParameterList?: (node: EventParameterList) => void;
-        EventParameter?: (node: EventParameter) => void;
-        FunctionTypeParameterList?: (node: FunctionTypeParameterList) => void;
-        FunctionTypeParameter?: (node: FunctionTypeParameter) => void;
-        VariableDeclaration?: (node: VariableDeclaration) => void;
-        TypeName?: (node: TypeName) => void;
-        UserDefinedTypeName?: (node: UserDefinedTypeName) => void;
-        Mapping?: (node: Mapping) => void;
-        FunctionTypeName?: (node: FunctionTypeName) => void;
-        StorageLocation?: (node: StorageLocation) => void;
-        StateMutability?: (node: StateMutability) => void;
-        Block?: (node: Block) => void;
-        Statement?: (node: Statement) => void;
-        ExpressionStatement?: (node: ExpressionStatement) => void;
-        IfStatement?: (node: IfStatement) => void;
-        WhileStatement?: (node: WhileStatement) => void;
-        SimpleStatement?: (node: SimpleStatement) => void;
-        ForStatement?: (node: ForStatement) => void;
-        InlineAssemblyStatement?: (node: InlineAssemblyStatement) => void;
-        DoWhileStatement?: (node: DoWhileStatement) => void;
-        ContinueStatement?: (node: ContinueStatement) => void;
-        BreakStatement?: (node: BreakStatement) => void;
-        ReturnStatement?: (node: ReturnStatement) => void;
-        ThrowStatement?: (node: ThrowStatement) => void;
-        VariableDeclarationStatement?: (node: VariableDeclarationStatement) => void;
-        IdentifierList?: (node: IdentifierList) => void;
-        ElementaryTypeName?: (node: ElementaryTypeName) => void;
-        Expression?: (node: Expression) => void;
-        PrimaryExpression?: (node: PrimaryExpression) => void;
-        ExpressionList?: (node: ExpressionList) => void;
-        NameValueList?: (node: NameValueList) => void;
-        NameValue?: (node: NameValue) => void;
-        FunctionCallArguments?: (node: FunctionCallArguments) => void;
-        AssemblyBlock?: (node: AssemblyBlock) => void;
-        AssemblyItem?: (node: AssemblyItem) => void;
-        AssemblyExpression?: (node: AssemblyExpression) => void;
-        AssemblyCall?: (node: AssemblyCall) => void;
-        AssemblyLocalDefinition?: (node: AssemblyLocalDefinition) => void;
-        AssemblyAssignment?: (node: AssemblyAssignment) => void;
-        AssemblyIdentifierOrList?: (node: AssemblyIdentifierOrList) => void;
-        AssemblyIdentifierList?: (node: AssemblyIdentifierList) => void;
-        AssemblyStackAssignment?: (node: AssemblyStackAssignment) => void;
-        LabelDefinition?: (node: LabelDefinition) => void;
-        AssemblySwitch?: (node: AssemblySwitch) => void;
-        AssemblyCase?: (node: AssemblyCase) => void;
-        AssemblyFunctionDefinition?: (node: AssemblyFunctionDefinition) => void;
-        AssemblyFunctionReturns?: (node: AssemblyFunctionReturns) => void;
-        AssemblyFor?: (node: AssemblyFor) => void;
-        AssemblyIf?: (node: AssemblyIf) => void;
-        AssemblyLiteral?: (node: AssemblyLiteral) => void;
-        SubAssembly?: (node: SubAssembly) => void;
-        TupleExpression?: (node: TupleExpression) => void;
-        ElementaryTypeNameExpression?: (node: ElementaryTypeNameExpression) => void;
-        NumberLiteral?: (node: NumberLiteral) => void;
-        Identifier?: (node: Identifier) => void;
-        BinaryOperation?: (node: BinaryOperation) => void;
-        Conditional?: (node: Conditional) => void;
-    }
-    export interface ParserOpts {
-        range?: boolean;
-    }
-    export function parse(sourceCode: string, parserOpts: ParserOpts): ASTNode;
-    export function visit(ast: ASTNode, visitor: Visitor): void;
-}
diff --git a/packages/sra-report/src/globals.d.ts b/packages/sra-report/src/globals.d.ts
index 03b3205c0..783b92913 100644
--- a/packages/sra-report/src/globals.d.ts
+++ b/packages/sra-report/src/globals.d.ts
@@ -1,28 +1,3 @@
-declare module 'newman' {
-    export interface NewmanRunSummary {
-        run: NewmanRun;
-    }
-    export interface NewmanRun {
-        executions: NewmanRunExecution[];
-    }
-    export interface NewmanRunExecution {
-        item: NewmanRunExecutionItem;
-        assertions: NewmanRunExecutionAssertion[];
-    }
-    export interface NewmanRunExecutionItem {
-        name: string;
-    }
-    export interface NewmanRunExecutionAssertion {
-        assertion: string;
-        error: NewmanRunExecutionAssertionError;
-    }
-    export interface NewmanRunExecutionAssertionError {
-        message: string;
-    }
-    // tslint:disable-next-line:completed-docs
-    export function run(options: any, callback?: (err: Error | null, summary: NewmanRunSummary) => void): void;
-}
-
 declare module '*.json' {
     const value: any;
     export default value;
diff --git a/packages/subproviders/src/globals.d.ts b/packages/subproviders/src/globals.d.ts
index 580c5aaa5..c5ad26876 100644
--- a/packages/subproviders/src/globals.d.ts
+++ b/packages/subproviders/src/globals.d.ts
@@ -51,42 +51,6 @@ declare module '@ledgerhq/hw-transport-node-hid' {
     }
 }
 
-// web3-provider-engine declarations
-declare module 'web3-provider-engine/subproviders/subprovider' {
-    class Subprovider {}
-    export = Subprovider;
-}
-declare module 'web3-provider-engine/subproviders/rpc' {
-    import { JSONRPCRequestPayload } from '@0xproject/types';
-    class RpcSubprovider {
-        constructor(options: { rpcUrl: string });
-        public handleRequest(
-            payload: JSONRPCRequestPayload,
-            next: () => void,
-            end: (err: Error | null, data?: any) => void,
-        ): void;
-    }
-    export = RpcSubprovider;
-}
-declare module 'web3-provider-engine/util/rpc-cache-utils' {
-    class ProviderEngineRpcUtils {
-        public static blockTagForPayload(payload: any): string | null;
-    }
-    export = ProviderEngineRpcUtils;
-}
-declare module 'web3-provider-engine/subproviders/fixture' {
-    import { JSONRPCRequestPayload } from '@0xproject/types';
-    class FixtureSubprovider {
-        constructor(staticResponses: any);
-        public handleRequest(
-            payload: JSONRPCRequestPayload,
-            next: () => void,
-            end: (err: Error | null, data?: any) => void,
-        ): void;
-    }
-    export = FixtureSubprovider;
-}
-
 // hdkey declarations
 declare module 'hdkey' {
     class HDNode {
@@ -104,19 +68,3 @@ declare module '*.json' {
     export default json;
     /* tslint:enable */
 }
-
-// ganache-core declarations
-declare module 'ganache-core' {
-    import * as Web3 from 'web3';
-    export interface GanacheOpts {
-        verbose: boolean;
-        logger: {
-            log(msg: string): void;
-        };
-        port: number;
-        networkId: number;
-        mnemonic: string;
-    }
-    // tslint:disable-next-line:completed-docs
-    export function provider(opts: GanacheOpts): Web3.Provider;
-}
diff --git a/packages/subproviders/src/subproviders/ganache.ts b/packages/subproviders/src/subproviders/ganache.ts
index 785de792d..8008d1b4b 100644
--- a/packages/subproviders/src/subproviders/ganache.ts
+++ b/packages/subproviders/src/subproviders/ganache.ts
@@ -1,6 +1,5 @@
-import { JSONRPCRequestPayload } from '@0xproject/types';
+import { JSONRPCRequestPayload, Provider } from '@0xproject/types';
 import * as Ganache from 'ganache-core';
-import * as Web3 from 'web3';
 
 import { Callback, ErrorCallback } from '../types';
 
@@ -11,7 +10,7 @@ import { Subprovider } from './subprovider';
  * It intercepts all JSON RPC requests and relays them to an in-process ganache instance.
  */
 export class GanacheSubprovider extends Subprovider {
-    private _ganacheProvider: Web3.Provider;
+    private _ganacheProvider: Provider;
     /**
      * Instantiates a GanacheSubprovider
      * @param opts The desired opts with which to instantiate the Ganache provider
diff --git a/packages/subproviders/src/subproviders/injected_web3.ts b/packages/subproviders/src/subproviders/injected_web3.ts
index edecd8bf6..1d7b2ddfe 100644
--- a/packages/subproviders/src/subproviders/injected_web3.ts
+++ b/packages/subproviders/src/subproviders/injected_web3.ts
@@ -1,4 +1,4 @@
-import { JSONRPCRequestPayload } from '@0xproject/types';
+import { JSONRPCRequestPayload, Provider } from '@0xproject/types';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
@@ -18,7 +18,7 @@ export class InjectedWeb3Subprovider extends Subprovider {
      * Instantiates a new InjectedWeb3Subprovider
      * @param provider Web3 provider that should handle  all user account related requests
      */
-    constructor(provider: Web3.Provider) {
+    constructor(provider: Provider) {
         super();
         this._injectedWeb3 = new Web3(provider);
     }
diff --git a/packages/testnet-faucets/src/ts/global.d.ts b/packages/testnet-faucets/src/ts/global.d.ts
index 65e9fb632..94e63a32d 100644
--- a/packages/testnet-faucets/src/ts/global.d.ts
+++ b/packages/testnet-faucets/src/ts/global.d.ts
@@ -1,8 +1,3 @@
-declare module 'rollbar';
-declare module 'web3-provider-engine/subproviders/rpc';
-declare module 'web3-provider-engine/subproviders/nonce-tracker';
-declare module 'web3-provider-engine/subproviders/hooked-wallet';
-
 declare module '*.json' {
     const json: any;
     /* tslint:disable */
diff --git a/packages/types/CHANGELOG.json b/packages/types/CHANGELOG.json
index f207b7293..2e4c5f091 100644
--- a/packages/types/CHANGELOG.json
+++ b/packages/types/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "0.6.0",
+        "changes": [
+            {
+                "note": "Add Provider type",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "version": "0.5.0",
         "changes": [
             {
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 419611695..442fbb2d6 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -1,5 +1,9 @@
 import { BigNumber } from 'bignumber.js';
 
+export interface Provider {
+    sendAsync(payload: JSONRPCRequestPayload, callback: (err: Error, result: JSONRPCResponsePayload) => void): void;
+}
+
 export type ContractAbi = AbiDefinition[];
 
 export type AbiDefinition = FunctionAbi | EventAbi;
diff --git a/packages/typescript-typings/CHANGELOG.json b/packages/typescript-typings/CHANGELOG.json
index 22ad5f1ad..294d9ee9f 100644
--- a/packages/typescript-typings/CHANGELOG.json
+++ b/packages/typescript-typings/CHANGELOG.json
@@ -1,5 +1,14 @@
 [
     {
+        "version": "0.1.0",
+        "changes": [
+            {
+                "note": "Add types for more packages",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "timestamp": 1522673609,
         "version": "0.0.3",
         "changes": [
diff --git a/packages/typescript-typings/types/async-child-process/index.d.ts b/packages/typescript-typings/types/async-child-process/index.d.ts
new file mode 100644
index 000000000..f8ed46378
--- /dev/null
+++ b/packages/typescript-typings/types/async-child-process/index.d.ts
@@ -0,0 +1 @@
+declare module 'async-child-process';
diff --git a/packages/typescript-typings/types/blockies/index.d.ts b/packages/typescript-typings/types/blockies/index.d.ts
new file mode 100644
index 000000000..d4068e50f
--- /dev/null
+++ b/packages/typescript-typings/types/blockies/index.d.ts
@@ -0,0 +1,11 @@
+// blockies declarations
+declare interface BlockiesIcon {
+    toDataURL(): string;
+}
+declare interface BlockiesConfig {
+    seed: string;
+}
+declare function blockies(config: BlockiesConfig): BlockiesIcon;
+declare module 'blockies' {
+    export = blockies;
+}
diff --git a/packages/typescript-typings/types/compare-versions/index.d.ts b/packages/typescript-typings/types/compare-versions/index.d.ts
new file mode 100644
index 000000000..b19e1f94b
--- /dev/null
+++ b/packages/typescript-typings/types/compare-versions/index.d.ts
@@ -0,0 +1,5 @@
+// compare-version declarations
+declare function compareVersions(firstVersion: string, secondVersion: string): number;
+declare module 'compare-versions' {
+    export = compareVersions;
+}
diff --git a/packages/typescript-typings/types/es6-promisify/index.d.ts b/packages/typescript-typings/types/es6-promisify/index.d.ts
new file mode 100644
index 000000000..f9c202fb0
--- /dev/null
+++ b/packages/typescript-typings/types/es6-promisify/index.d.ts
@@ -0,0 +1 @@
+declare module 'es6-promisify';
diff --git a/packages/typescript-typings/types/find-versions/index.d.ts b/packages/typescript-typings/types/find-versions/index.d.ts
new file mode 100644
index 000000000..e7c1c6461
--- /dev/null
+++ b/packages/typescript-typings/types/find-versions/index.d.ts
@@ -0,0 +1,4 @@
+declare function findVersions(version: string): string[];
+declare module 'find-versions' {
+    export = findVersions;
+}
diff --git a/packages/typescript-typings/types/ganache-core/index.d.ts b/packages/typescript-typings/types/ganache-core/index.d.ts
new file mode 100644
index 000000000..feeb5721e
--- /dev/null
+++ b/packages/typescript-typings/types/ganache-core/index.d.ts
@@ -0,0 +1,14 @@
+declare module 'ganache-core' {
+    import { Provider } from '@0xproject/types';
+    export interface GanacheOpts {
+        verbose?: boolean;
+        logger?: {
+            log(msg: string): void;
+        };
+        port?: number;
+        network_id?: number;
+        mnemonic?: string;
+    }
+    // tslint:disable-next-line:completed-docs
+    export function provider(opts: GanacheOpts): Provider;
+}
diff --git a/packages/typescript-typings/types/is-mobile/index.d.ts b/packages/typescript-typings/types/is-mobile/index.d.ts
new file mode 100644
index 000000000..0b3b57854
--- /dev/null
+++ b/packages/typescript-typings/types/is-mobile/index.d.ts
@@ -0,0 +1,4 @@
+declare function isMobile(): boolean;
+declare module 'is-mobile' {
+    export = isMobile;
+}
diff --git a/packages/typescript-typings/types/keccak/index.d.ts b/packages/typescript-typings/types/keccak/index.d.ts
new file mode 100644
index 000000000..0465f8faf
--- /dev/null
+++ b/packages/typescript-typings/types/keccak/index.d.ts
@@ -0,0 +1 @@
+declare module 'keccak';
diff --git a/packages/typescript-typings/types/lerna-get-packages/index.d.ts b/packages/typescript-typings/types/lerna-get-packages/index.d.ts
new file mode 100644
index 000000000..0650a542c
--- /dev/null
+++ b/packages/typescript-typings/types/lerna-get-packages/index.d.ts
@@ -0,0 +1,16 @@
+declare interface LernaPackage {
+    location: string;
+    package: {
+        private?: boolean;
+        version: string;
+        name: string;
+        main?: string;
+        config?: {
+            additionalTsTypings?: string[];
+        };
+    };
+}
+declare function lernaGetPackages(path: string): LernaPackage[];
+declare module 'lerna-get-packages' {
+    export = lernaGetPackages;
+}
diff --git a/packages/typescript-typings/types/newman/index.d.ts b/packages/typescript-typings/types/newman/index.d.ts
new file mode 100644
index 000000000..bea9ac160
--- /dev/null
+++ b/packages/typescript-typings/types/newman/index.d.ts
@@ -0,0 +1,24 @@
+declare module 'newman' {
+    export interface NewmanRunSummary {
+        run: NewmanRun;
+    }
+    export interface NewmanRun {
+        executions: NewmanRunExecution[];
+    }
+    export interface NewmanRunExecution {
+        item: NewmanRunExecutionItem;
+        assertions: NewmanRunExecutionAssertion[];
+    }
+    export interface NewmanRunExecutionItem {
+        name: string;
+    }
+    export interface NewmanRunExecutionAssertion {
+        assertion: string;
+        error: NewmanRunExecutionAssertionError;
+    }
+    export interface NewmanRunExecutionAssertionError {
+        message: string;
+    }
+    // tslint:disable-next-line:completed-docs
+    export function run(options: any, callback?: (err: Error | null, summary: NewmanRunSummary) => void): void;
+}
diff --git a/packages/typescript-typings/types/promisify-child-process/index.d.ts b/packages/typescript-typings/types/promisify-child-process/index.d.ts
new file mode 100644
index 000000000..55c041735
--- /dev/null
+++ b/packages/typescript-typings/types/promisify-child-process/index.d.ts
@@ -0,0 +1 @@
+declare module 'promisify-child-process';
diff --git a/packages/typescript-typings/types/publish-release/index.d.ts b/packages/typescript-typings/types/publish-release/index.d.ts
new file mode 100644
index 000000000..680cc45c9
--- /dev/null
+++ b/packages/typescript-typings/types/publish-release/index.d.ts
@@ -0,0 +1 @@
+declare module 'publish-release';
diff --git a/packages/typescript-typings/types/react-highlight/index.d.ts b/packages/typescript-typings/types/react-highlight/index.d.ts
new file mode 100644
index 000000000..875721533
--- /dev/null
+++ b/packages/typescript-typings/types/react-highlight/index.d.ts
@@ -0,0 +1 @@
+declare module 'react-highlight';
diff --git a/packages/typescript-typings/types/react-tooltip/index.d.ts b/packages/typescript-typings/types/react-tooltip/index.d.ts
new file mode 100644
index 000000000..98cb6d592
--- /dev/null
+++ b/packages/typescript-typings/types/react-tooltip/index.d.ts
@@ -0,0 +1 @@
+declare module 'react-tooltip';
diff --git a/packages/typescript-typings/types/request-promise-native/index.d.ts b/packages/typescript-typings/types/request-promise-native/index.d.ts
new file mode 100644
index 000000000..a86e99624
--- /dev/null
+++ b/packages/typescript-typings/types/request-promise-native/index.d.ts
@@ -0,0 +1 @@
+declare module 'request-promise-native';
diff --git a/packages/typescript-typings/types/rollbar/index.d.ts b/packages/typescript-typings/types/rollbar/index.d.ts
new file mode 100644
index 000000000..c9bec447d
--- /dev/null
+++ b/packages/typescript-typings/types/rollbar/index.d.ts
@@ -0,0 +1 @@
+declare module 'rollbar';
diff --git a/packages/typescript-typings/types/semver-diff/index.d.ts b/packages/typescript-typings/types/semver-diff/index.d.ts
new file mode 100644
index 000000000..e4a14eeb2
--- /dev/null
+++ b/packages/typescript-typings/types/semver-diff/index.d.ts
@@ -0,0 +1 @@
+declare module 'semver-diff';
diff --git a/packages/typescript-typings/types/semver-sort/index.d.ts b/packages/typescript-typings/types/semver-sort/index.d.ts
new file mode 100644
index 000000000..47310756a
--- /dev/null
+++ b/packages/typescript-typings/types/semver-sort/index.d.ts
@@ -0,0 +1,3 @@
+declare module 'semver-sort' {
+    const desc: (versions: string[]) => string[];
+}
diff --git a/packages/typescript-typings/types/solidity-parser-antlr/index.d.ts b/packages/typescript-typings/types/solidity-parser-antlr/index.d.ts
new file mode 100644
index 000000000..cc1246a0e
--- /dev/null
+++ b/packages/typescript-typings/types/solidity-parser-antlr/index.d.ts
@@ -0,0 +1,314 @@
+declare module 'solidity-parser-antlr' {
+    export interface BaseASTNode {
+        range: [number, number];
+    }
+    export interface SourceUnit extends BaseASTNode {}
+    export interface PragmaDirective extends BaseASTNode {}
+    export interface PragmaName extends BaseASTNode {}
+    export interface PragmaValue extends BaseASTNode {}
+    export interface Version extends BaseASTNode {}
+    export interface VersionOperator extends BaseASTNode {}
+    export interface VersionConstraint extends BaseASTNode {}
+    export interface ImportDeclaration extends BaseASTNode {}
+    export interface ImportDirective extends BaseASTNode {}
+    export interface ContractDefinition extends BaseASTNode {}
+    export interface InheritanceSpecifier extends BaseASTNode {}
+    export interface ContractPart extends BaseASTNode {}
+    export interface StateVariableDeclaration extends BaseASTNode {
+        variables: VariableDeclaration[];
+    }
+    export interface UsingForDeclaration extends BaseASTNode {}
+    export interface StructDefinition extends BaseASTNode {}
+    export interface ModifierDefinition extends BaseASTNode {
+        name: string;
+    }
+    export interface ModifierInvocation extends BaseASTNode {
+        name: string;
+    }
+    export interface FunctionDefinition extends BaseASTNode {
+        name: string;
+    }
+    export interface ReturnParameters extends BaseASTNode {}
+    export interface ModifierList extends BaseASTNode {}
+    export interface EventDefinition extends BaseASTNode {}
+    export interface EnumValue extends BaseASTNode {}
+    export interface EnumDefinition extends BaseASTNode {}
+    export interface ParameterList extends BaseASTNode {}
+    export interface Parameter extends BaseASTNode {}
+    export interface EventParameterList extends BaseASTNode {}
+    export interface EventParameter extends BaseASTNode {}
+    export interface FunctionTypeParameterList extends BaseASTNode {}
+    export interface FunctionTypeParameter extends BaseASTNode {}
+    export interface VariableDeclaration extends BaseASTNode {
+        visibility: 'public' | 'private';
+        isStateVar: boolean;
+    }
+    export interface TypeName extends BaseASTNode {}
+    export interface UserDefinedTypeName extends BaseASTNode {}
+    export interface Mapping extends BaseASTNode {}
+    export interface FunctionTypeName extends BaseASTNode {}
+    export interface StorageLocation extends BaseASTNode {}
+    export interface StateMutability extends BaseASTNode {}
+    export interface Block extends BaseASTNode {}
+    export interface Statement extends BaseASTNode {}
+    export interface ExpressionStatement extends BaseASTNode {
+        expression: ASTNode;
+    }
+    export interface IfStatement extends BaseASTNode {
+        trueBody: ASTNode;
+        falseBody: ASTNode;
+    }
+    export interface WhileStatement extends BaseASTNode {}
+    export interface SimpleStatement extends BaseASTNode {}
+    export interface ForStatement extends BaseASTNode {}
+    export interface InlineAssemblyStatement extends BaseASTNode {}
+    export interface DoWhileStatement extends BaseASTNode {}
+    export interface ContinueStatement extends BaseASTNode {}
+    export interface BreakStatement extends BaseASTNode {}
+    export interface ReturnStatement extends BaseASTNode {}
+    export interface ThrowStatement extends BaseASTNode {}
+    export interface VariableDeclarationStatement extends BaseASTNode {}
+    export interface IdentifierList extends BaseASTNode {}
+    export interface ElementaryTypeName extends BaseASTNode {}
+    export interface Expression extends BaseASTNode {}
+    export interface PrimaryExpression extends BaseASTNode {}
+    export interface ExpressionList extends BaseASTNode {}
+    export interface NameValueList extends BaseASTNode {}
+    export interface NameValue extends BaseASTNode {}
+    export interface FunctionCallArguments extends BaseASTNode {}
+    export interface AssemblyBlock extends BaseASTNode {}
+    export interface AssemblyItem extends BaseASTNode {}
+    export interface AssemblyExpression extends BaseASTNode {}
+    export interface AssemblyCall extends BaseASTNode {}
+    export interface AssemblyLocalDefinition extends BaseASTNode {}
+    export interface AssemblyAssignment extends BaseASTNode {}
+    export interface AssemblyIdentifierOrList extends BaseASTNode {}
+    export interface AssemblyIdentifierList extends BaseASTNode {}
+    export interface AssemblyStackAssignment extends BaseASTNode {}
+    export interface LabelDefinition extends BaseASTNode {}
+    export interface AssemblySwitch extends BaseASTNode {}
+    export interface AssemblyCase extends BaseASTNode {}
+    export interface AssemblyFunctionDefinition extends BaseASTNode {}
+    export interface AssemblyFunctionReturns extends BaseASTNode {}
+    export interface AssemblyFor extends BaseASTNode {}
+    export interface AssemblyIf extends BaseASTNode {}
+    export interface AssemblyLiteral extends BaseASTNode {}
+    export interface SubAssembly extends BaseASTNode {}
+    export interface TupleExpression extends BaseASTNode {}
+    export interface ElementaryTypeNameExpression extends BaseASTNode {}
+    export interface NumberLiteral extends BaseASTNode {}
+    export interface Identifier extends BaseASTNode {}
+    export type BinOp =
+        | '+'
+        | '-'
+        | '*'
+        | '/'
+        | '**'
+        | '%'
+        | '<<'
+        | '>>'
+        | '&&'
+        | '||'
+        | '&'
+        | '|'
+        | '^'
+        | '<'
+        | '>'
+        | '<='
+        | '>='
+        | '=='
+        | '!='
+        | '='
+        | '|='
+        | '^='
+        | '&='
+        | '<<='
+        | '>>='
+        | '+='
+        | '-='
+        | '*='
+        | '/='
+        | '%=';
+    export interface BinaryOperation extends BaseASTNode {
+        left: ASTNode;
+        right: ASTNode;
+        operator: BinOp;
+    }
+    export interface Conditional extends BaseASTNode {
+        trueExpression: ASTNode;
+        falseExpression: ASTNode;
+    }
+
+    export type ASTNode =
+        | SourceUnit
+        | PragmaDirective
+        | PragmaName
+        | PragmaValue
+        | Version
+        | VersionOperator
+        | VersionConstraint
+        | ImportDeclaration
+        | ImportDirective
+        | ContractDefinition
+        | InheritanceSpecifier
+        | ContractPart
+        | StateVariableDeclaration
+        | UsingForDeclaration
+        | StructDefinition
+        | ModifierDefinition
+        | ModifierInvocation
+        | FunctionDefinition
+        | ReturnParameters
+        | ModifierList
+        | EventDefinition
+        | EnumValue
+        | EnumDefinition
+        | ParameterList
+        | Parameter
+        | EventParameterList
+        | EventParameter
+        | FunctionTypeParameterList
+        | FunctionTypeParameter
+        | VariableDeclaration
+        | TypeName
+        | UserDefinedTypeName
+        | Mapping
+        | FunctionTypeName
+        | StorageLocation
+        | StateMutability
+        | Block
+        | Statement
+        | ExpressionStatement
+        | IfStatement
+        | WhileStatement
+        | SimpleStatement
+        | ForStatement
+        | InlineAssemblyStatement
+        | DoWhileStatement
+        | ContinueStatement
+        | BreakStatement
+        | ReturnStatement
+        | ThrowStatement
+        | VariableDeclarationStatement
+        | IdentifierList
+        | ElementaryTypeName
+        | Expression
+        | PrimaryExpression
+        | ExpressionList
+        | NameValueList
+        | NameValue
+        | FunctionCallArguments
+        | AssemblyBlock
+        | AssemblyItem
+        | AssemblyExpression
+        | AssemblyCall
+        | AssemblyLocalDefinition
+        | AssemblyAssignment
+        | AssemblyIdentifierOrList
+        | AssemblyIdentifierList
+        | AssemblyStackAssignment
+        | LabelDefinition
+        | AssemblySwitch
+        | AssemblyCase
+        | AssemblyFunctionDefinition
+        | AssemblyFunctionReturns
+        | AssemblyFor
+        | AssemblyIf
+        | AssemblyLiteral
+        | SubAssembly
+        | TupleExpression
+        | ElementaryTypeNameExpression
+        | NumberLiteral
+        | Identifier
+        | BinaryOperation
+        | Conditional;
+    export interface Visitor {
+        SourceUnit?: (node: SourceUnit) => void;
+        PragmaDirective?: (node: PragmaDirective) => void;
+        PragmaName?: (node: PragmaName) => void;
+        PragmaValue?: (node: PragmaValue) => void;
+        Version?: (node: Version) => void;
+        VersionOperator?: (node: VersionOperator) => void;
+        VersionConstraint?: (node: VersionConstraint) => void;
+        ImportDeclaration?: (node: ImportDeclaration) => void;
+        ImportDirective?: (node: ImportDirective) => void;
+        ContractDefinition?: (node: ContractDefinition) => void;
+        InheritanceSpecifier?: (node: InheritanceSpecifier) => void;
+        ContractPart?: (node: ContractPart) => void;
+        StateVariableDeclaration?: (node: StateVariableDeclaration) => void;
+        UsingForDeclaration?: (node: UsingForDeclaration) => void;
+        StructDefinition?: (node: StructDefinition) => void;
+        ModifierDefinition?: (node: ModifierDefinition) => void;
+        ModifierInvocation?: (node: ModifierInvocation) => void;
+        FunctionDefinition?: (node: FunctionDefinition) => void;
+        ReturnParameters?: (node: ReturnParameters) => void;
+        ModifierList?: (node: ModifierList) => void;
+        EventDefinition?: (node: EventDefinition) => void;
+        EnumValue?: (node: EnumValue) => void;
+        EnumDefinition?: (node: EnumDefinition) => void;
+        ParameterList?: (node: ParameterList) => void;
+        Parameter?: (node: Parameter) => void;
+        EventParameterList?: (node: EventParameterList) => void;
+        EventParameter?: (node: EventParameter) => void;
+        FunctionTypeParameterList?: (node: FunctionTypeParameterList) => void;
+        FunctionTypeParameter?: (node: FunctionTypeParameter) => void;
+        VariableDeclaration?: (node: VariableDeclaration) => void;
+        TypeName?: (node: TypeName) => void;
+        UserDefinedTypeName?: (node: UserDefinedTypeName) => void;
+        Mapping?: (node: Mapping) => void;
+        FunctionTypeName?: (node: FunctionTypeName) => void;
+        StorageLocation?: (node: StorageLocation) => void;
+        StateMutability?: (node: StateMutability) => void;
+        Block?: (node: Block) => void;
+        Statement?: (node: Statement) => void;
+        ExpressionStatement?: (node: ExpressionStatement) => void;
+        IfStatement?: (node: IfStatement) => void;
+        WhileStatement?: (node: WhileStatement) => void;
+        SimpleStatement?: (node: SimpleStatement) => void;
+        ForStatement?: (node: ForStatement) => void;
+        InlineAssemblyStatement?: (node: InlineAssemblyStatement) => void;
+        DoWhileStatement?: (node: DoWhileStatement) => void;
+        ContinueStatement?: (node: ContinueStatement) => void;
+        BreakStatement?: (node: BreakStatement) => void;
+        ReturnStatement?: (node: ReturnStatement) => void;
+        ThrowStatement?: (node: ThrowStatement) => void;
+        VariableDeclarationStatement?: (node: VariableDeclarationStatement) => void;
+        IdentifierList?: (node: IdentifierList) => void;
+        ElementaryTypeName?: (node: ElementaryTypeName) => void;
+        Expression?: (node: Expression) => void;
+        PrimaryExpression?: (node: PrimaryExpression) => void;
+        ExpressionList?: (node: ExpressionList) => void;
+        NameValueList?: (node: NameValueList) => void;
+        NameValue?: (node: NameValue) => void;
+        FunctionCallArguments?: (node: FunctionCallArguments) => void;
+        AssemblyBlock?: (node: AssemblyBlock) => void;
+        AssemblyItem?: (node: AssemblyItem) => void;
+        AssemblyExpression?: (node: AssemblyExpression) => void;
+        AssemblyCall?: (node: AssemblyCall) => void;
+        AssemblyLocalDefinition?: (node: AssemblyLocalDefinition) => void;
+        AssemblyAssignment?: (node: AssemblyAssignment) => void;
+        AssemblyIdentifierOrList?: (node: AssemblyIdentifierOrList) => void;
+        AssemblyIdentifierList?: (node: AssemblyIdentifierList) => void;
+        AssemblyStackAssignment?: (node: AssemblyStackAssignment) => void;
+        LabelDefinition?: (node: LabelDefinition) => void;
+        AssemblySwitch?: (node: AssemblySwitch) => void;
+        AssemblyCase?: (node: AssemblyCase) => void;
+        AssemblyFunctionDefinition?: (node: AssemblyFunctionDefinition) => void;
+        AssemblyFunctionReturns?: (node: AssemblyFunctionReturns) => void;
+        AssemblyFor?: (node: AssemblyFor) => void;
+        AssemblyIf?: (node: AssemblyIf) => void;
+        AssemblyLiteral?: (node: AssemblyLiteral) => void;
+        SubAssembly?: (node: SubAssembly) => void;
+        TupleExpression?: (node: TupleExpression) => void;
+        ElementaryTypeNameExpression?: (node: ElementaryTypeNameExpression) => void;
+        NumberLiteral?: (node: NumberLiteral) => void;
+        Identifier?: (node: Identifier) => void;
+        BinaryOperation?: (node: BinaryOperation) => void;
+        Conditional?: (node: Conditional) => void;
+    }
+    export interface ParserOpts {
+        range?: boolean;
+    }
+    export function parse(sourceCode: string, parserOpts: ParserOpts): ASTNode;
+    export function visit(ast: ASTNode, visitor: Visitor): void;
+}
diff --git a/packages/typescript-typings/types/to-snake-case/index.d.ts b/packages/typescript-typings/types/to-snake-case/index.d.ts
new file mode 100644
index 000000000..39df3f852
--- /dev/null
+++ b/packages/typescript-typings/types/to-snake-case/index.d.ts
@@ -0,0 +1,4 @@
+declare function toSnakeCase(str: string): string;
+declare module 'to-snake-case' {
+    export = toSnakeCase;
+}
diff --git a/packages/typescript-typings/types/truffle-hdwalet-provider/index.d.ts b/packages/typescript-typings/types/truffle-hdwalet-provider/index.d.ts
index f2b002233..af82557cb 100644
--- a/packages/typescript-typings/types/truffle-hdwalet-provider/index.d.ts
+++ b/packages/typescript-typings/types/truffle-hdwalet-provider/index.d.ts
@@ -1,7 +1,6 @@
 declare module 'truffle-hdwallet-provider' {
-    import { JSONRPCRequestPayload, JSONRPCResponsePayload } from '@0xproject/types';
-    import * as Web3 from 'web3';
-    class HDWalletProvider implements Web3.Provider {
+    import { JSONRPCRequestPayload, JSONRPCResponsePayload, Provider } from '@0xproject/types';
+    class HDWalletProvider implements Provider {
         constructor(mnemonic: string, rpcUrl: string);
         public sendAsync(
             payload: JSONRPCRequestPayload,
diff --git a/packages/typescript-typings/types/web3-provider-engine/index.d.ts b/packages/typescript-typings/types/web3-provider-engine/index.d.ts
index f30b06873..15a8d0005 100644
--- a/packages/typescript-typings/types/web3-provider-engine/index.d.ts
+++ b/packages/typescript-typings/types/web3-provider-engine/index.d.ts
@@ -9,3 +9,42 @@ declare module 'web3-provider-engine' {
     }
     export = Web3ProviderEngine;
 }
+
+declare module 'web3-provider-engine/subproviders/nonce-tracker';
+declare module 'web3-provider-engine/subproviders/hooked-wallet';
+declare module 'web3-provider-engine/subproviders/filters';
+// web3-provider-engine declarations
+declare module 'web3-provider-engine/subproviders/subprovider' {
+    class Subprovider {}
+    export = Subprovider;
+}
+declare module 'web3-provider-engine/subproviders/rpc' {
+    import { JSONRPCRequestPayload } from '@0xproject/types';
+    class RpcSubprovider {
+        constructor(options: { rpcUrl: string });
+        public handleRequest(
+            payload: JSONRPCRequestPayload,
+            next: () => void,
+            end: (err: Error | null, data?: any) => void,
+        ): void;
+    }
+    export = RpcSubprovider;
+}
+declare module 'web3-provider-engine/util/rpc-cache-utils' {
+    class ProviderEngineRpcUtils {
+        public static blockTagForPayload(payload: any): string | null;
+    }
+    export = ProviderEngineRpcUtils;
+}
+declare module 'web3-provider-engine/subproviders/fixture' {
+    import { JSONRPCRequestPayload } from '@0xproject/types';
+    class FixtureSubprovider {
+        constructor(staticResponses: any);
+        public handleRequest(
+            payload: JSONRPCRequestPayload,
+            next: () => void,
+            end: (err: Error | null, data?: any) => void,
+        ): void;
+    }
+    export = FixtureSubprovider;
+}
diff --git a/packages/typescript-typings/types/web3/index.d.ts b/packages/typescript-typings/types/web3/index.d.ts
index f4ebd41b9..15e7575a8 100644
--- a/packages/typescript-typings/types/web3/index.d.ts
+++ b/packages/typescript-typings/types/web3/index.d.ts
@@ -6,6 +6,7 @@ declare module 'web3' {
         BlockWithoutTransactionData,
         BlockParam,
         CallData,
+        Provider,
         Unit,
         TxData,
         Transaction,
@@ -21,17 +22,17 @@ declare module 'web3' {
 
     class Web3 {
         public static providers: typeof providers;
-        public currentProvider: Web3.Provider;
+        public currentProvider: Provider;
 
         public eth: Web3.EthApi;
         public personal: Web3.PersonalApi | undefined;
         public version: Web3.VersionApi;
         public net: Web3.NetApi;
 
-        public constructor(provider?: Web3.Provider);
+        public constructor(provider?: Provider);
 
         public isConnected(): boolean;
-        public setProvider(provider: Web3.Provider): void;
+        public setProvider(provider: Provider): void;
         public reset(keepIsSyncing: boolean): void;
         public toHex(data: MixedData): string;
         public toAscii(hex: string): string;
@@ -49,7 +50,7 @@ declare module 'web3' {
     }
 
     namespace providers {
-        class HttpProvider implements Web3.Provider {
+        class HttpProvider implements Provider {
             constructor(url?: string, timeout?: number, username?: string, password?: string);
             public sendAsync(
                 payload: JSONRPCRequestPayload,
@@ -77,13 +78,6 @@ declare module 'web3' {
             stopWatching(callback?: () => void): void;
         }
 
-        interface Provider {
-            sendAsync(
-                payload: JSONRPCRequestPayload,
-                callback: (err: Error, result: JSONRPCResponsePayload) => void,
-            ): void;
-        }
-
         interface Sha3Options {
             encoding: 'hex';
         }
diff --git a/packages/typescript-typings/types/xml-js/index.d.ts b/packages/typescript-typings/types/xml-js/index.d.ts
new file mode 100644
index 000000000..8e4873aeb
--- /dev/null
+++ b/packages/typescript-typings/types/xml-js/index.d.ts
@@ -0,0 +1,7 @@
+declare interface XML2JSONOpts {
+    compact?: boolean;
+    spaces?: number;
+}
+declare module 'xml-js' {
+    const xml2json: (xml: string, opts: XML2JSONOpts) => string;
+}
diff --git a/packages/web3-wrapper/CHANGELOG.json b/packages/web3-wrapper/CHANGELOG.json
index bdf09f81e..14e45dacb 100644
--- a/packages/web3-wrapper/CHANGELOG.json
+++ b/packages/web3-wrapper/CHANGELOG.json
@@ -1,5 +1,18 @@
 [
     {
+        "version": "0.6.0",
+        "changes": [
+            {
+                "note": "Make `isAddress` and `toWei` static",
+                "pr": 501
+            },
+            {
+                "note": "Add static methods `toUnitAmount` and `toBaseUnitAmount`",
+                "pr": 501
+            }
+        ]
+    },
+    {
         "version": "0.5.0",
         "changes": [
             {
diff --git a/packages/web3-wrapper/coverage/.gitkeep b/packages/web3-wrapper/coverage/.gitkeep
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/packages/web3-wrapper/coverage/.gitkeep
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index 20fa39b07..910d4725e 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -2,13 +2,18 @@
     "name": "@0xproject/web3-wrapper",
     "version": "0.5.0",
     "description": "Wraps around web3 and gives a nicer interface",
-    "main": "lib/index.js",
-    "types": "lib/index.d.ts",
+    "main": "lib/src/index.js",
+    "types": "lib/src/index.d.ts",
     "scripts": {
         "build:watch": "tsc -w",
         "build": "tsc && copyfiles -u 2 './lib/monorepo_scripts/**/*' ./scripts",
         "clean": "shx rm -rf lib scripts",
         "lint": "tslint --project . 'src/**/*.ts'",
+        "test": "run-s clean build run_mocha",
+        "test:circleci": "yarn test:coverage",
+        "run_mocha": "mocha lib/test/**/*_test.js --bail --exit",
+        "test:coverage": "nyc npm run test --all && yarn coverage:report:lcov",
+        "coverage:report:lcov": "nyc report --reporter=text-lcov > coverage/lcov.info",
         "manual:postpublish": "yarn build; node ./scripts/postpublish.js",
         "docs:stage": "yarn build && node ./scripts/stage_docs.js",
         "docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --json $JSON_FILE_PATH $PROJECT_FILES",
@@ -41,6 +46,13 @@
         "copyfiles": "^1.2.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
+        "chai": "^4.0.1",
+        "mocha": "^4.0.1",
+        "nyc": "^11.0.1",
+        "ganache-core": "0xProject/ganache-core",
+        "chai-as-promised": "^7.1.0",
+        "chai-bignumber": "^2.0.1",
+        "dirty-chai": "^2.0.1",
         "tslint": "5.8.0",
         "typedoc": "0xProject/typedoc",
         "typescript": "2.7.1"
diff --git a/packages/web3-wrapper/src/web3_wrapper.ts b/packages/web3-wrapper/src/web3_wrapper.ts
index d75f39ed5..5e6ff3239 100644
--- a/packages/web3-wrapper/src/web3_wrapper.ts
+++ b/packages/web3-wrapper/src/web3_wrapper.ts
@@ -7,12 +7,13 @@ import {
     JSONRPCRequestPayload,
     JSONRPCResponsePayload,
     LogEntry,
+    Provider,
     RawLogEntry,
     TransactionReceipt,
     TransactionReceiptWithDecodedLogs,
     TxData,
 } from '@0xproject/types';
-import { AbiDecoder, BigNumber, intervalUtils, promisify } from '@0xproject/utils';
+import { AbiDecoder, addressUtils, BigNumber, intervalUtils, promisify } from '@0xproject/utils';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
@@ -31,13 +32,61 @@ export class Web3Wrapper {
     private _defaults: Partial<TxData>;
     private _jsonRpcRequestId: number;
     /**
+     * Check if an address is a valid Ethereum address
+     * @param address Address to check
+     * @returns Whether the address is a valid Ethereum address
+     */
+    public static isAddress(address: string): boolean {
+        return addressUtils.isAddress(address);
+    }
+    /**
+     * A unit amount is defined as the amount of a token above the specified decimal places (integer part).
+     * E.g: If a currency has 18 decimal places, 1e18 or one quintillion of the currency is equivalent
+     * to 1 unit.
+     * @param   amount      The amount in baseUnits that you would like converted to units.
+     * @param   decimals    The number of decimal places the unit amount has.
+     * @return  The amount in units.
+     */
+    public static toUnitAmount(amount: BigNumber, decimals: number): BigNumber {
+        const aUnit = new BigNumber(10).pow(decimals);
+        const unit = amount.div(aUnit);
+        return unit;
+    }
+    /**
+     * A baseUnit is defined as the smallest denomination of a token. An amount expressed in baseUnits
+     * is the amount expressed in the smallest denomination.
+     * E.g: 1 unit of a token with 18 decimal places is expressed in baseUnits as 1000000000000000000
+     * @param   amount      The amount of units that you would like converted to baseUnits.
+     * @param   decimals    The number of decimal places the unit amount has.
+     * @return  The amount in baseUnits.
+     */
+    public static toBaseUnitAmount(amount: BigNumber, decimals: number): BigNumber {
+        const unit = new BigNumber(10).pow(decimals);
+        const baseUnitAmount = amount.times(unit);
+        const hasDecimals = baseUnitAmount.decimalPlaces() !== 0;
+        if (hasDecimals) {
+            throw new Error(`Invalid unit amount: ${amount.toString()} - Too many decimal places`);
+        }
+        return baseUnitAmount;
+    }
+    /**
+     * Convert an Ether amount from ETH to Wei
+     * @param ethAmount Amount of Ether to convert to wei
+     * @returns Amount in wei
+     */
+    public static toWei(ethAmount: BigNumber): BigNumber {
+        const ETH_DECIMALS = 18;
+        const balanceWei = Web3Wrapper.toBaseUnitAmount(ethAmount, ETH_DECIMALS);
+        return balanceWei;
+    }
+    /**
      * Instantiates a new Web3Wrapper.
      * @param   provider    The Web3 provider instance you would like the Web3Wrapper to use for interacting with
      *                      the backing Ethereum node.
      * @param   defaults    Override TxData defaults sent with RPC requests to the backing Ethereum node.
      * @return  An instance of the Web3Wrapper class.
      */
-    constructor(provider: Web3.Provider, defaults?: Partial<TxData>) {
+    constructor(provider: Provider, defaults?: Partial<TxData>) {
         if (_.isUndefined((provider as any).sendAsync)) {
             // Web3@1.0 provider doesn't support synchronous http requests,
             // so it only has an async `send` method, instead of a `send` and `sendAsync` in web3@0.x.x`
@@ -61,25 +110,17 @@ export class Web3Wrapper {
      * Retrieve the Web3 provider
      * @return  Web3 provider instance
      */
-    public getProvider(): Web3.Provider {
+    public getProvider(): Provider {
         return this._web3.currentProvider;
     }
     /**
      * Update the used Web3 provider
      * @param provider The new Web3 provider to be set
      */
-    public setProvider(provider: Web3.Provider) {
+    public setProvider(provider: Provider) {
         this._web3.setProvider(provider);
     }
     /**
-     * Check if an address is a valid Ethereum address
-     * @param address Address to check
-     * @returns Whether the address is a valid Ethereum address
-     */
-    public isAddress(address: string): boolean {
-        return this._web3.isAddress(address);
-    }
-    /**
      * Check whether an address is available through the backing provider. This can be
      * useful if you want to know whether a user can sign messages or transactions from
      * a given Ethereum address.
@@ -96,7 +137,7 @@ export class Web3Wrapper {
      * @returns Ethereum node's version string
      */
     public async getNodeVersionAsync(): Promise<string> {
-        const nodeVersion = await promisify<string>(this._web3.version.getNode)();
+        const nodeVersion = await this._sendRawPayloadAsync<string>({ method: 'web3_clientVersion' });
         return nodeVersion;
     }
     /**
@@ -104,7 +145,7 @@ export class Web3Wrapper {
      * @returns The network id
      */
     public async getNetworkIdAsync(): Promise<number> {
-        const networkIdStr = await promisify<string>(this._web3.version.getNetwork)();
+        const networkIdStr = await this._sendRawPayloadAsync<string>({ method: 'net_version' });
         const networkId = _.parseInt(networkIdStr);
         return networkId;
     }
@@ -121,15 +162,6 @@ export class Web3Wrapper {
         return transactionReceipt;
     }
     /**
-     * Convert an Ether amount from ETH to Wei
-     * @param ethAmount Amount of Ether to convert to wei
-     * @returns Amount in wei
-     */
-    public toWei(ethAmount: BigNumber): BigNumber {
-        const balanceWei = this._web3.toWei(ethAmount, 'ether');
-        return balanceWei;
-    }
-    /**
      * Retrieves an accounts Ether balance in wei
      * @param owner Account whose balance you wish to check
      * @returns Balance in wei
diff --git a/packages/web3-wrapper/test/utils/chai_setup.ts b/packages/web3-wrapper/test/utils/chai_setup.ts
new file mode 100644
index 000000000..078edd309
--- /dev/null
+++ b/packages/web3-wrapper/test/utils/chai_setup.ts
@@ -0,0 +1,13 @@
+import * as chai from 'chai';
+import chaiAsPromised = require('chai-as-promised');
+import ChaiBigNumber = require('chai-bignumber');
+import * as dirtyChai from 'dirty-chai';
+
+export const chaiSetup = {
+    configure() {
+        chai.config.includeStack = true;
+        chai.use(ChaiBigNumber());
+        chai.use(dirtyChai);
+        chai.use(chaiAsPromised);
+    },
+};
diff --git a/packages/web3-wrapper/test/web3_wrapper_test.ts b/packages/web3-wrapper/test/web3_wrapper_test.ts
new file mode 100644
index 000000000..2bf3badaa
--- /dev/null
+++ b/packages/web3-wrapper/test/web3_wrapper_test.ts
@@ -0,0 +1,39 @@
+import * as chai from 'chai';
+import * as Ganache from 'ganache-core';
+import 'mocha';
+
+import { Web3Wrapper } from '../src';
+
+import { chaiSetup } from './utils/chai_setup';
+chaiSetup.configure();
+
+const { expect } = chai;
+
+describe('Web3Wrapper tests', () => {
+    const NETWORK_ID = 50;
+    const provider = Ganache.provider({ network_id: NETWORK_ID });
+    const web3Wrapper = new Web3Wrapper(provider);
+    describe('#isAddress', () => {
+        it('correctly checks if a string is a valid ethereum address', () => {
+            expect(Web3Wrapper.isAddress('0x0')).to.be.false();
+            expect(Web3Wrapper.isAddress('0xdeadbeef')).to.be.false();
+            expect(Web3Wrapper.isAddress('42')).to.be.false();
+            expect(Web3Wrapper.isAddress('weth.thetoken.eth')).to.be.false();
+            expect(Web3Wrapper.isAddress('0xc02aaa39b223fe8d0a0e5c4f27ead9083c756cc2')).to.be.true();
+            expect(Web3Wrapper.isAddress('0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2')).to.be.true();
+        });
+    });
+    describe('#getNodeVersionAsync', () => {
+        it('gets the node version', async () => {
+            const nodeVersion = await web3Wrapper.getNodeVersionAsync();
+            const NODE_VERSION = 'EthereumJS TestRPC/v2.1.0/ethereum-js';
+            expect(nodeVersion).to.be.equal(NODE_VERSION);
+        });
+    });
+    describe('#getNetworkIdAsync', () => {
+        it('gets the network id', async () => {
+            const networkId = await web3Wrapper.getNetworkIdAsync();
+            expect(networkId).to.be.equal(NETWORK_ID);
+        });
+    });
+});
diff --git a/packages/web3-wrapper/tsconfig.json b/packages/web3-wrapper/tsconfig.json
index c56d255d5..8b4cd47a2 100644
--- a/packages/web3-wrapper/tsconfig.json
+++ b/packages/web3-wrapper/tsconfig.json
@@ -3,5 +3,5 @@
     "compilerOptions": {
         "outDir": "lib"
     },
-    "include": ["./src/**/*"]
+    "include": ["src/**/*", "test/**/*"]
 }
diff --git a/packages/website/ts/blockchain.ts b/packages/website/ts/blockchain.ts
index 72cb94c02..fd34ab82d 100644
--- a/packages/website/ts/blockchain.ts
+++ b/packages/website/ts/blockchain.ts
@@ -23,6 +23,7 @@ import {
     LedgerWalletSubprovider,
     RedundantRPCSubprovider,
 } from '@0xproject/subproviders';
+import { Provider } from '@0xproject/types';
 import { BigNumber, intervalUtils, logUtils, promisify } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
@@ -73,11 +74,11 @@ export class Blockchain {
     private _web3Wrapper?: Web3Wrapper;
     private _blockchainWatcher?: BlockchainWatcher;
     private _userAddressIfExists: string;
-    private _cachedProvider: Web3.Provider;
+    private _cachedProvider: Provider;
     private _cachedProviderNetworkId: number;
     private _ledgerSubprovider: LedgerWalletSubprovider;
     private _defaultGasPrice: BigNumber;
-    private static _getNameGivenProvider(provider: Web3.Provider): string {
+    private static _getNameGivenProvider(provider: Provider): string {
         const providerType = utils.getProviderType(provider);
         const providerNameIfExists = providerToName[providerType];
         if (_.isUndefined(providerNameIfExists)) {
@@ -377,7 +378,7 @@ export class Blockchain {
     }
     public isValidAddress(address: string): boolean {
         const lowercaseAddress = address.toLowerCase();
-        return this._web3Wrapper.isAddress(lowercaseAddress);
+        return Web3Wrapper.isAddress(lowercaseAddress);
     }
     public async pollTokenBalanceAsync(token: Token) {
         utils.assert(this._doesUserAddressExist(), BlockchainCallErrs.UserHasNoAssociatedAddresses);
diff --git a/packages/website/ts/containers/zero_ex_js_documentation.ts b/packages/website/ts/containers/zero_ex_js_documentation.ts
index 6e893133f..da8922e79 100644
--- a/packages/website/ts/containers/zero_ex_js_documentation.ts
+++ b/packages/website/ts/containers/zero_ex_js_documentation.ts
@@ -121,6 +121,7 @@ const docsInfoConfig: DocsInfoConfig = {
             'ExchangeContractErrs',
             'ContractEvent',
             'Token',
+            'Provider',
             'ExchangeEvents',
             'IndexedFilterValues',
             'SubscriptionOpts',
diff --git a/packages/website/ts/globals.d.ts b/packages/website/ts/globals.d.ts
index 2c2140485..719c2708a 100644
--- a/packages/website/ts/globals.d.ts
+++ b/packages/website/ts/globals.d.ts
@@ -1,8 +1,5 @@
-declare module 'react-tooltip';
 declare module 'truffle-contract';
-declare module 'keccak';
 declare module 'whatwg-fetch';
-declare module 'web3-provider-engine/subproviders/filters';
 declare module 'thenby';
 declare module 'react-document-title';
 declare module 'react-ga';
@@ -14,119 +11,9 @@ declare module '*.json' {
     /* tslint:enable */
 }
 
-// tslint:disable:max-classes-per-file
-
-// find-version declarations
-declare function findVersions(version: string): string[];
-declare module 'find-versions' {
-    export = findVersions;
-}
-
-// semver-sort declarations
-declare module 'semver-sort' {
-    const desc: (versions: string[]) => string[];
-}
-
-// xml-js declarations
-declare interface XML2JSONOpts {
-    compact?: boolean;
-    spaces?: number;
-}
-declare module 'xml-js' {
-    const xml2json: (xml: string, opts: XML2JSONOpts) => string;
-}
-
 // This will be defined by default in TS 2.4
 // Source: https://github.com/Microsoft/TypeScript/issues/12364
 interface System {
     import<T>(module: string): Promise<T>;
 }
 declare var System: System;
-
-// jsonschema declarations
-// Source: https://github.com/tdegrunt/jsonschema/blob/master/lib/index.d.ts
-declare interface Schema {
-    id?: string;
-    $schema?: string;
-    title?: string;
-    description?: string;
-    multipleOf?: number;
-    maximum?: number;
-    exclusiveMaximum?: boolean;
-    minimum?: number;
-    exclusiveMinimum?: boolean;
-    maxLength?: number;
-    minLength?: number;
-    pattern?: string;
-    additionalItems?: boolean | Schema;
-    items?: Schema | Schema[];
-    maxItems?: number;
-    minItems?: number;
-    uniqueItems?: boolean;
-    maxProperties?: number;
-    minProperties?: number;
-    required?: string[];
-    additionalProperties?: boolean | Schema;
-    definitions?: {
-        [name: string]: Schema;
-    };
-    properties?: {
-        [name: string]: Schema;
-    };
-    patternProperties?: {
-        [name: string]: Schema;
-    };
-    dependencies?: {
-        [name: string]: Schema | string[];
-    };
-    enum?: any[];
-    type?: string | string[];
-    allOf?: Schema[];
-    anyOf?: Schema[];
-    oneOf?: Schema[];
-    not?: Schema;
-    // This is the only property that's not defined in https://github.com/tdegrunt/jsonschema/blob/master/lib/index.d.ts
-    // There is an open issue for that: https://github.com/tdegrunt/jsonschema/issues/194
-    // There is also an opened PR: https://github.com/tdegrunt/jsonschema/pull/218/files
-    // As soon as it gets merged we should be good to use types from 'jsonschema' package
-    $ref?: string;
-}
-
-// blockies declarations
-declare interface BlockiesIcon {
-    toDataURL(): string;
-}
-declare interface BlockiesConfig {
-    seed: string;
-}
-declare function blockies(config: BlockiesConfig): BlockiesIcon;
-declare module 'blockies' {
-    export = blockies;
-}
-
-// web3-provider-engine declarations
-declare class Subprovider {}
-declare module 'web3-provider-engine/subproviders/subprovider' {
-    export = Subprovider;
-}
-declare module 'web3-provider-engine/subproviders/rpc' {
-    import { JSONRPCRequestPayload } from '@0xproject/types';
-    class RpcSubprovider {
-        constructor(options: { rpcUrl: string });
-        public handleRequest(
-            payload: JSONRPCRequestPayload,
-            next: () => void,
-            end: (err: Error | null, data?: any) => void,
-        ): void;
-    }
-    export = RpcSubprovider;
-}
-
-declare interface Artifact {
-    abi: any;
-    networks: {
-        [networkId: number]: {
-            address: string;
-        };
-    };
-}
diff --git a/packages/website/ts/utils/utils.ts b/packages/website/ts/utils/utils.ts
index 75597a7e2..afe159beb 100644
--- a/packages/website/ts/utils/utils.ts
+++ b/packages/website/ts/utils/utils.ts
@@ -1,5 +1,6 @@
-import { ECSignature, ExchangeContractErrs, Web3Provider, ZeroEx, ZeroExError } from '0x.js';
+import { ECSignature, ExchangeContractErrs, ZeroEx, ZeroExError } from '0x.js';
 import { constants as sharedConstants, EtherscanLinkSuffixes, Networks } from '@0xproject/react-shared';
+import { Provider } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import deepEqual = require('deep-equal');
 import * as _ from 'lodash';
@@ -8,7 +9,6 @@ import { Order, Providers, ScreenWidths, Side, SideToAssetToken, Token, TokenByA
 import { configs } from 'ts/utils/configs';
 import { constants } from 'ts/utils/constants';
 import * as u2f from 'ts/vendor/u2f_api';
-import Web3 = require('web3');
 
 const LG_MIN_EM = 64;
 const MD_MIN_EM = 52;
@@ -273,7 +273,7 @@ export const utils = {
             window.onload = () => resolve();
         });
     },
-    getProviderType(provider: Web3.Provider): Providers | string {
+    getProviderType(provider: Provider): Providers | string {
         const constructorName = provider.constructor.name;
         let parsedProviderName = constructorName;
         switch (constructorName) {