Merge pull request #332 from 0xProject/feature/contracts-abi-gen

Contracts refactor. Bye, truffle!!! :clap:

92 files changed, 1123 insertions, 1202 deletions

diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index 2942e5001..9cce372a5 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -2,27 +2,24 @@
     "name": "0x.js",
     "version": "0.31.0",
     "description": "A javascript library for interacting with the 0x protocol",
-    "keywords": [
-        "0x.js",
-        "0xproject",
-        "ethereum",
-        "tokens",
-        "exchange"
-    ],
+    "keywords": ["0x.js", "0xproject", "ethereum", "tokens", "exchange"],
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
     "scripts": {
         "prebuild": "run-s clean generate_contract_wrappers",
         "build": "run-p build:umd:prod build:commonjs; exit 0;",
         "docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --json $JSON_FILE_PATH $PROJECT_DIR",
-        "upload_docs_json": "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
-        "generate_contract_wrappers": "node ../abi-gen/lib/index.js --abiGlob 'src/artifacts/@(Exchange|Token|TokenTransferProxy|EtherToken|TokenRegistry|DummyToken).json' --templates contract_templates --output src/contract_wrappers/generated",
+        "upload_docs_json":
+            "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
+        "generate_contract_wrappers":
+            "node ../abi-gen/lib/index.js --abiGlob 'src/artifacts/@(Exchange|Token|TokenTransferProxy|EtherToken|TokenRegistry|DummyToken).json' --templates contract_templates --output src/contract_wrappers/generated",
         "lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
         "test:circleci": "run-s test:coverage report_test_coverage",
         "test": "run-s clean test:commonjs",
         "test:coverage": "nyc npm run test --all",
         "report_test_coverage": "nyc report --reporter=text-lcov | coveralls",
-        "update_contracts": "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../0x.js/src/artifacts; done;",
+        "update_contracts":
+            "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../0x.js/src/artifacts; done;",
         "clean": "shx rm -rf _bundles lib test_temp",
         "build:umd:prod": "NODE_ENV=production webpack",
         "build:commonjs": "tsc && copyfiles -u 2 './src/artifacts/**/*.json' ./lib/src/artifacts;",
@@ -66,7 +63,7 @@
         "nyc": "^11.0.1",
         "opn-cli": "^3.1.0",
         "request": "^2.81.0",
-        "request-promise-native": "^1.0.4",
+        "request-promise-native": "^1.0.5",
         "shx": "^0.2.2",
         "sinon": "^4.0.0",
         "source-map-support": "^0.5.0",
@@ -89,7 +86,7 @@
         "ethereumjs-abi": "^0.6.4",
         "ethereumjs-blockstream": "^2.0.6",
         "ethereumjs-util": "^5.1.1",
-        "js-sha3": "^0.6.1",
+        "js-sha3": "^0.7.0",
         "lodash": "^4.17.4",
         "uuid": "^3.1.0",
         "web3": "^0.20.0"
diff --git a/packages/0x.js/src/0x.ts b/packages/0x.js/src/0x.ts
index f8a484c5d..6cfa65cc2 100644
--- a/packages/0x.js/src/0x.ts
+++ b/packages/0x.js/src/0x.ts
@@ -1,5 +1,6 @@
 import { schemas, SchemaValidator } from '@0xproject/json-schemas';
-import { BigNumber, intervalUtils } from '@0xproject/utils';
+import { TransactionReceiptWithDecodedLogs } from '@0xproject/types';
+import { AbiDecoder, BigNumber, intervalUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as ethUtil from 'ethereumjs-util';
 import * as _ from 'lodash';
@@ -12,16 +13,7 @@ import { TokenTransferProxyWrapper } from './contract_wrappers/token_transfer_pr
 import { TokenWrapper } from './contract_wrappers/token_wrapper';
 import { OrderStateWatcher } from './order_watcher/order_state_watcher';
 import { zeroExConfigSchema } from './schemas/zero_ex_config_schema';
-import {
-    ECSignature,
-    Order,
-    SignedOrder,
-    TransactionReceiptWithDecodedLogs,
-    Web3Provider,
-    ZeroExConfig,
-    ZeroExError,
-} from './types';
-import { AbiDecoder } from './utils/abi_decoder';
+import { ECSignature, Order, SignedOrder, Web3Provider, ZeroExConfig, ZeroExError } from './types';
 import { assert } from './utils/assert';
 import { constants } from './utils/constants';
 import { decorators } from './utils/decorators';
@@ -334,8 +326,8 @@ export class ZeroEx {
                 );
             },
         );
-
-        return txReceiptPromise;
+        const txReceipt = await txReceiptPromise;
+        return txReceipt;
     }
     /*
      * HACK: `TokenWrapper` needs a token transfer proxy address. `TokenTransferProxy` address is fetched from
diff --git a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
index 27551c01d..5f11d810a 100644
--- a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts
@@ -1,4 +1,5 @@
-import { intervalUtils } from '@0xproject/utils';
+import { LogWithDecodedArgs, RawLog } from '@0xproject/types';
+import { AbiDecoder, intervalUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import { Block, BlockAndLogStreamer } from 'ethereumjs-blockstream';
 import * as _ from 'lodash';
@@ -13,11 +14,8 @@ import {
     EventCallback,
     IndexedFilterValues,
     InternalZeroExError,
-    LogWithDecodedArgs,
-    RawLog,
     ZeroExError,
 } from '../types';
-import { AbiDecoder } from '../utils/abi_decoder';
 import { constants } from '../utils/constants';
 import { filterUtils } from '../utils/filter_utils';
 
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 b03571636..8fa7aa78b 100644
--- a/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/ether_token_wrapper.ts
@@ -1,5 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
-import { BigNumber } from '@0xproject/utils';
+import { LogWithDecodedArgs } from '@0xproject/types';
+import { AbiDecoder, BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 
@@ -10,11 +11,9 @@ import {
     EtherTokenEvents,
     EventCallback,
     IndexedFilterValues,
-    LogWithDecodedArgs,
     TransactionOpts,
     ZeroExError,
 } from '../types';
-import { AbiDecoder } from '../utils/abi_decoder';
 import { assert } from '../utils/assert';
 
 import { ContractWrapper } from './contract_wrapper';
diff --git a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
index 2b6117729..fceab851a 100644
--- a/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/exchange_wrapper.ts
@@ -1,5 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
-import { BigNumber } from '@0xproject/utils';
+import { DecodedLogArgs, LogWithDecodedArgs } from '@0xproject/types';
+import { AbiDecoder, BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
@@ -8,7 +9,6 @@ import { artifacts } from '../artifacts';
 import {
     BlockParamLiteral,
     BlockRange,
-    DecodedLogArgs,
     ECSignature,
     EventCallback,
     ExchangeContractErrCodes,
@@ -17,7 +17,6 @@ import {
     ExchangeEvents,
     IndexedFilterValues,
     LogErrorContractEventArgs,
-    LogWithDecodedArgs,
     MethodOpts,
     Order,
     OrderAddresses,
@@ -28,7 +27,6 @@ import {
     SignedOrder,
     ValidateOrderFillableOpts,
 } from '../types';
-import { AbiDecoder } from '../utils/abi_decoder';
 import { assert } from '../utils/assert';
 import { decorators } from '../utils/decorators';
 import { ExchangeTransferSimulator } from '../utils/exchange_transfer_simulator';
@@ -846,9 +844,9 @@ export class ExchangeWrapper extends ContractWrapper {
     public throwLogErrorsAsErrors(logs: Array<LogWithDecodedArgs<DecodedLogArgs> | Web3.LogEntry>): void {
         const errLog = _.find(logs, {
             event: ExchangeEvents.LogError,
-        }) as LogWithDecodedArgs<LogErrorContractEventArgs> | undefined;
+        });
         if (!_.isUndefined(errLog)) {
-            const logArgs = errLog.args;
+            const logArgs = (errLog as LogWithDecodedArgs<LogErrorContractEventArgs>).args;
             const errCode = logArgs.errorId.toNumber();
             const errMessage = this._exchangeContractErrCodesToMsg[errCode];
             throw new Error(errMessage);
diff --git a/packages/0x.js/src/contract_wrappers/token_wrapper.ts b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
index 7943f4a60..4216ff462 100644
--- a/packages/0x.js/src/contract_wrappers/token_wrapper.ts
+++ b/packages/0x.js/src/contract_wrappers/token_wrapper.ts
@@ -1,5 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
-import { BigNumber } from '@0xproject/utils';
+import { LogWithDecodedArgs } from '@0xproject/types';
+import { AbiDecoder, BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 
@@ -8,14 +9,12 @@ import {
     BlockRange,
     EventCallback,
     IndexedFilterValues,
-    LogWithDecodedArgs,
     MethodOpts,
     TokenContractEventArgs,
     TokenEvents,
     TransactionOpts,
     ZeroExError,
 } from '../types';
-import { AbiDecoder } from '../utils/abi_decoder';
 import { assert } from '../utils/assert';
 import { constants } from '../utils/constants';
 
diff --git a/packages/0x.js/src/globals.d.ts b/packages/0x.js/src/globals.d.ts
index 4f4932b6e..0e103d057 100644
--- a/packages/0x.js/src/globals.d.ts
+++ b/packages/0x.js/src/globals.d.ts
@@ -41,19 +41,3 @@ declare module 'truffle-hdwallet-provider' {
     }
     export = HDWalletProvider;
 }
-
-// abi-decoder declarations
-interface DecodedLogArg {}
-interface DecodedLog {
-    name: string;
-    events: DecodedLogArg[];
-}
-declare module 'abi-decoder' {
-    import * as Web3 from 'web3';
-    const addABI: (abi: Web3.AbiDefinition) => void;
-    const decodeLogs: (logs: Web3.LogEntry[]) => DecodedLog[];
-}
-
-declare module 'web3/lib/solidity/coder' {
-    const decodeParams: (types: string[], data: string) => any[];
-}
diff --git a/packages/0x.js/src/index.ts b/packages/0x.js/src/index.ts
index 599c3a2b0..41e67e177 100644
--- a/packages/0x.js/src/index.ts
+++ b/packages/0x.js/src/index.ts
@@ -28,12 +28,9 @@ export {
     WithdrawalContractEventArgs,
     DepositContractEventArgs,
     ContractEventArgs,
-    ContractEventArg,
     Web3Provider,
     ZeroExConfig,
     EtherTokenEvents,
-    TransactionReceiptWithDecodedLogs,
-    LogWithDecodedArgs,
     MethodOpts,
     OrderTransactionOpts,
     TransactionOpts,
@@ -47,4 +44,6 @@ export {
     OrderState,
 } from './types';
 
+export { ContractEventArg, LogWithDecodedArgs, TransactionReceiptWithDecodedLogs } from '@0xproject/types';
+
 export { TransactionReceipt } from '@0xproject/types';
diff --git a/packages/0x.js/src/order_watcher/order_state_watcher.ts b/packages/0x.js/src/order_watcher/order_state_watcher.ts
index 12ac60960..576be00c8 100644
--- a/packages/0x.js/src/order_watcher/order_state_watcher.ts
+++ b/packages/0x.js/src/order_watcher/order_state_watcher.ts
@@ -1,5 +1,6 @@
 import { schemas } from '@0xproject/json-schemas';
-import { intervalUtils } from '@0xproject/utils';
+import { LogWithDecodedArgs } from '@0xproject/types';
+import { AbiDecoder, intervalUtils } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 
@@ -19,7 +20,6 @@ import {
     LogCancelContractEventArgs,
     LogEvent,
     LogFillContractEventArgs,
-    LogWithDecodedArgs,
     OnOrderStateChangeCallback,
     OrderState,
     OrderStateWatcherConfig,
@@ -29,7 +29,6 @@ import {
     WithdrawalContractEventArgs,
     ZeroExError,
 } from '../types';
-import { AbiDecoder } from '../utils/abi_decoder';
 import { assert } from '../utils/assert';
 import { OrderStateUtils } from '../utils/order_state_utils';
 import { utils } from '../utils/utils';
@@ -224,12 +223,12 @@ export class OrderStateWatcher {
             return;
         }
         const log = logIfExists as LogEvent; // At this moment we are sure that no error occured and log is defined.
-        const maybeDecodedLog = this._abiDecoder.tryToDecodeLogOrNoop(log);
-        const isLogDecoded = !_.isUndefined((maybeDecodedLog as LogWithDecodedArgs<any>).event);
+        const maybeDecodedLog = this._abiDecoder.tryToDecodeLogOrNoop<ContractEventArgs>(log);
+        const isLogDecoded = !_.isUndefined(((maybeDecodedLog as any) as LogWithDecodedArgs<ContractEventArgs>).event);
         if (!isLogDecoded) {
             return; // noop
         }
-        const decodedLog = maybeDecodedLog as LogWithDecodedArgs<ContractEventArgs>;
+        const decodedLog = (maybeDecodedLog as any) as LogWithDecodedArgs<ContractEventArgs>;
         let makerToken: string;
         let makerAddress: string;
         switch (decodedLog.event) {
diff --git a/packages/0x.js/src/types.ts b/packages/0x.js/src/types.ts
index 3c93910e9..a0deb91c9 100644
--- a/packages/0x.js/src/types.ts
+++ b/packages/0x.js/src/types.ts
@@ -1,4 +1,4 @@
-import { TransactionReceipt } from '@0xproject/types';
+import { ContractEventArg, LogWithDecodedArgs } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as Web3 from 'web3';
 
@@ -53,13 +53,6 @@ export interface DecodedLogEvent<ArgsType> {
 export type EventCallback<ArgsType> = (err: null | Error, log?: DecodedLogEvent<ArgsType>) => void;
 export type EventWatcherCallback = (err: null | Error, log?: LogEvent) => void;
 
-export enum SolidityTypes {
-    Address = 'address',
-    Uint256 = 'uint256',
-    Uint8 = 'uint8',
-    Uint = 'uint',
-}
-
 export enum ExchangeContractErrCodes {
     ERROR_FILL_EXPIRED, // Order has already expired
     ERROR_FILL_NO_VALUE, // Order has already been fully filled or cancelled
@@ -94,8 +87,6 @@ export enum ExchangeContractErrs {
     BatchOrdersMustHaveAtLeastOneItem = 'BATCH_ORDERS_MUST_HAVE_AT_LEAST_ONE_ITEM',
 }
 
-export type RawLog = Web3.LogEntry;
-
 export interface ContractEvent {
     logIndex: number;
     transactionIndex: number;
@@ -163,7 +154,6 @@ export type EtherTokenContractEventArgs =
     | DepositContractEventArgs
     | WithdrawalContractEventArgs;
 export type ContractEventArgs = ExchangeContractEventArgs | TokenContractEventArgs | EtherTokenContractEventArgs;
-export type ContractEventArg = string | BigNumber;
 
 export interface Order {
     maker: string;
@@ -267,11 +257,6 @@ export type SyncMethod = (...args: any[]) => any;
  */
 export type Web3Provider = Web3.Provider;
 
-export interface JSONRPCPayload {
-    params: any[];
-    method: string;
-}
-
 /*
  * orderExpirationCheckingIntervalMs: How often to check for expired orders. Default: 50
  * eventPollingIntervalMs: How often to poll the Ethereum node for new events. Defaults: 200
@@ -305,23 +290,6 @@ export interface ZeroExConfig {
     orderWatcherConfig?: OrderStateWatcherConfig;
 }
 
-export enum AbiType {
-    Function = 'function',
-    Constructor = 'constructor',
-    Event = 'event',
-    Fallback = 'fallback',
-}
-
-export interface DecodedLogArgs {
-    [argName: string]: ContractEventArg;
-}
-
-export interface LogWithDecodedArgs<ArgsType> extends Web3.DecodedLogEntry<ArgsType> {}
-
-export interface TransactionReceiptWithDecodedLogs extends TransactionReceipt {
-    logs: Array<LogWithDecodedArgs<DecodedLogArgs> | Web3.LogEntry>;
-}
-
 export type ArtifactContractName = 'ZRX' | 'TokenTransferProxy' | 'TokenRegistry' | 'Token' | 'Exchange' | 'EtherToken';
 
 export interface Artifact {
diff --git a/packages/0x.js/src/utils/utils.ts b/packages/0x.js/src/utils/utils.ts
index 42cf5d956..74f2c5995 100644
--- a/packages/0x.js/src/utils/utils.ts
+++ b/packages/0x.js/src/utils/utils.ts
@@ -1,10 +1,11 @@
+import { SolidityTypes } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import BN = require('bn.js');
 import * as ethABI from 'ethereumjs-abi';
 import * as ethUtil from 'ethereumjs-util';
 import * as _ from 'lodash';
 
-import { Order, SignedOrder, SolidityTypes } from '../types';
+import { Order, SignedOrder } from '../types';
 
 export const utils = {
     /**
diff --git a/packages/0x.js/test/0x.js_test.ts b/packages/0x.js/test/0x.js_test.ts
index 927fe20be..5ebb68c8c 100644
--- a/packages/0x.js/test/0x.js_test.ts
+++ b/packages/0x.js/test/0x.js_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -10,9 +10,8 @@ import { ApprovalContractEventArgs, LogWithDecodedArgs, Order, TokenEvents, Zero
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 chaiSetup.configure();
 const expect = chai.expect;
 
diff --git a/packages/0x.js/test/assert_test.ts b/packages/0x.js/test/assert_test.ts
index 1f2820070..c4451742f 100644
--- a/packages/0x.js/test/assert_test.ts
+++ b/packages/0x.js/test/assert_test.ts
@@ -1,3 +1,4 @@
+import { web3Factory } from '@0xproject/dev-utils';
 import * as chai from 'chai';
 import 'mocha';
 
@@ -5,7 +6,6 @@ import { ZeroEx } from '../src';
 import { assert } from '../src/utils/assert';
 
 import { constants } from './utils/constants';
-import { web3Factory } from './utils/web3_factory';
 
 const expect = chai.expect;
 
diff --git a/packages/0x.js/test/ether_token_wrapper_test.ts b/packages/0x.js/test/ether_token_wrapper_test.ts
index b810fc9f1..6069b42bf 100644
--- a/packages/0x.js/test/ether_token_wrapper_test.ts
+++ b/packages/0x.js/test/ether_token_wrapper_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import 'mocha';
@@ -24,11 +24,10 @@ import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { reportNodeCallbackErrors } from './utils/report_callback_errors';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 // Since the address depositing/withdrawing ETH/WETH also needs to pay gas costs for the transaction,
 // a small amount of ETH will be used to pay this gas cost. We therefore check that the difference between
diff --git a/packages/0x.js/test/event_watcher_test.ts b/packages/0x.js/test/event_watcher_test.ts
index f92fb2b02..93ee9cd1c 100644
--- a/packages/0x.js/test/event_watcher_test.ts
+++ b/packages/0x.js/test/event_watcher_test.ts
@@ -1,3 +1,4 @@
+import { web3Factory } from '@0xproject/dev-utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -11,7 +12,6 @@ import { DoneCallback } from '../src/types';
 
 import { chaiSetup } from './utils/chai_setup';
 import { reportNodeCallbackErrors } from './utils/report_callback_errors';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/packages/0x.js/test/exchange_transfer_simulator_test.ts b/packages/0x.js/test/exchange_transfer_simulator_test.ts
index 20b4a05ca..e85a1640f 100644
--- a/packages/0x.js/test/exchange_transfer_simulator_test.ts
+++ b/packages/0x.js/test/exchange_transfer_simulator_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 
@@ -8,11 +8,10 @@ import { ExchangeTransferSimulator } from '../src/utils/exchange_transfer_simula
 
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('ExchangeTransferSimulator', () => {
     const web3 = web3Factory.create();
diff --git a/packages/0x.js/test/exchange_wrapper_test.ts b/packages/0x.js/test/exchange_wrapper_test.ts
index 7e0ffd818..c15cd65a9 100644
--- a/packages/0x.js/test/exchange_wrapper_test.ts
+++ b/packages/0x.js/test/exchange_wrapper_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -25,11 +25,10 @@ import { constants } from './utils/constants';
 import { FillScenarios } from './utils/fill_scenarios';
 import { reportNodeCallbackErrors } from './utils/report_callback_errors';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 const NON_EXISTENT_ORDER_HASH = '0x79370342234e7acd6bbeac335bd3bb1d368383294b64b8160a00f4060e4d3777';
 
diff --git a/packages/0x.js/test/expiration_watcher_test.ts b/packages/0x.js/test/expiration_watcher_test.ts
index 770615f88..b49dee8e5 100644
--- a/packages/0x.js/test/expiration_watcher_test.ts
+++ b/packages/0x.js/test/expiration_watcher_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -13,15 +13,13 @@ import { constants } from '../src/utils/constants';
 import { utils } from '../src/utils/utils';
 
 import { chaiSetup } from './utils/chai_setup';
-import { constants as testConstants } from './utils/constants';
 import { FillScenarios } from './utils/fill_scenarios';
 import { reportNoErrorCallbackErrors } from './utils/report_callback_errors';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(testConstants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('ExpirationWatcher', () => {
     let web3: Web3;
diff --git a/packages/0x.js/test/order_state_watcher_test.ts b/packages/0x.js/test/order_state_watcher_test.ts
index 2e9202fe2..9e2ad89e1 100644
--- a/packages/0x.js/test/order_state_watcher_test.ts
+++ b/packages/0x.js/test/order_state_watcher_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -22,13 +22,12 @@ import { constants } from './utils/constants';
 import { FillScenarios } from './utils/fill_scenarios';
 import { reportNodeCallbackErrors } from './utils/report_callback_errors';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 const TIMEOUT_MS = 150;
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('OrderStateWatcher', () => {
     let web3: Web3;
diff --git a/packages/0x.js/test/order_validation_test.ts b/packages/0x.js/test/order_validation_test.ts
index be3e0590c..934e2e51f 100644
--- a/packages/0x.js/test/order_validation_test.ts
+++ b/packages/0x.js/test/order_validation_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as Sinon from 'sinon';
@@ -13,11 +13,10 @@ import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { FillScenarios } from './utils/fill_scenarios';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('OrderValidation', () => {
     let web3: Web3;
diff --git a/packages/0x.js/test/subscription_test.ts b/packages/0x.js/test/subscription_test.ts
index f4c6f748f..f485bf84b 100644
--- a/packages/0x.js/test/subscription_test.ts
+++ b/packages/0x.js/test/subscription_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
 import 'mocha';
@@ -11,10 +11,9 @@ import { DoneCallback } from '../src/types';
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { assertNodeCallbackError } from './utils/report_callback_errors';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('SubscriptionTest', () => {
     let web3: Web3;
diff --git a/packages/0x.js/test/token_registry_wrapper_test.ts b/packages/0x.js/test/token_registry_wrapper_test.ts
index 0a170db8f..fefb99b16 100644
--- a/packages/0x.js/test/token_registry_wrapper_test.ts
+++ b/packages/0x.js/test/token_registry_wrapper_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { schemas, SchemaValidator } from '@0xproject/json-schemas';
 import * as chai from 'chai';
 import * as _ from 'lodash';
@@ -8,11 +8,10 @@ import { Token, ZeroEx } from '../src';
 
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 const TOKEN_REGISTRY_SIZE_AFTER_MIGRATION = 7;
 
diff --git a/packages/0x.js/test/token_transfer_proxy_wrapper_test.ts b/packages/0x.js/test/token_transfer_proxy_wrapper_test.ts
index 15bd7a8ba..dc9ec2064 100644
--- a/packages/0x.js/test/token_transfer_proxy_wrapper_test.ts
+++ b/packages/0x.js/test/token_transfer_proxy_wrapper_test.ts
@@ -1,10 +1,10 @@
+import { web3Factory } from '@0xproject/dev-utils';
 import * as chai from 'chai';
 
 import { ZeroEx } from '../src';
 
 import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
diff --git a/packages/0x.js/test/token_wrapper_test.ts b/packages/0x.js/test/token_wrapper_test.ts
index 4ba1f07c5..070d6ec47 100644
--- a/packages/0x.js/test/token_wrapper_test.ts
+++ b/packages/0x.js/test/token_wrapper_test.ts
@@ -1,4 +1,4 @@
-import { BlockchainLifecycle } from '@0xproject/dev-utils';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
@@ -22,11 +22,10 @@ import { chaiSetup } from './utils/chai_setup';
 import { constants } from './utils/constants';
 import { reportNodeCallbackErrors } from './utils/report_callback_errors';
 import { TokenUtils } from './utils/token_utils';
-import { web3Factory } from './utils/web3_factory';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const blockchainLifecycle = new BlockchainLifecycle(constants.RPC_URL);
+const blockchainLifecycle = new BlockchainLifecycle();
 
 describe('TokenWrapper', () => {
     let web3: Web3;
diff --git a/packages/0x.js/test/utils/constants.ts b/packages/0x.js/test/utils/constants.ts
index a9e665c25..cf030259c 100644
--- a/packages/0x.js/test/utils/constants.ts
+++ b/packages/0x.js/test/utils/constants.ts
@@ -1,11 +1,9 @@
 export const constants = {
     NULL_ADDRESS: '0x0000000000000000000000000000000000000000',
-    RPC_URL: 'http://localhost:8545',
     ROPSTEN_NETWORK_ID: 3,
     KOVAN_NETWORK_ID: 42,
     TESTRPC_NETWORK_ID: 50,
     KOVAN_RPC_URL: 'https://kovan.infura.io/',
     ROPSTEN_RPC_URL: 'https://ropsten.infura.io/',
     ZRX_DECIMALS: 18,
-    GAS_ESTIMATE: 500000,
 };
diff --git a/packages/assert/tsconfig.json b/packages/assert/tsconfig.json
index 88a467ccb..10354fa33 100644
--- a/packages/assert/tsconfig.json
+++ b/packages/assert/tsconfig.json
@@ -3,5 +3,10 @@
     "compilerOptions": {
         "outDir": "lib"
     },
-    "include": ["./src/**/*", "./test/**/*", "../../node_modules/chai-typescript-typings/index.d.ts"]
+    "include": [
+        "./src/**/*",
+        "./test/**/*",
+        "../../node_modules/web3-typescript-typings/index.d.ts",
+        "../../node_modules/chai-typescript-typings/index.d.ts"
+    ]
 }
diff --git a/packages/chai-as-promised-typescript-typings/package.json b/packages/chai-as-promised-typescript-typings/package.json
index 1d5cd4334..5c57a0e04 100644
--- a/packages/chai-as-promised-typescript-typings/package.json
+++ b/packages/chai-as-promised-typescript-typings/package.json
@@ -9,15 +9,13 @@
         "url": "git+https://github.com/0xProject/0x.js.git"
     },
     "author": "Fabio Berger",
-    "contributors": [
-        "Leonid Logvinov <logvinov.leon@gmail.com>"
-    ],
+    "contributors": ["Leonid Logvinov <logvinov.leon@gmail.com>"],
     "license": "Apache-2.0",
     "bugs": {
         "url": "https://github.com/0xProject/0x.js/issues"
     },
     "homepage": "https://github.com/0xProject/0x.js/packages/chai-as-promised-typescript-typings#readme",
     "dependencies": {
-        "chai-typescript-typings": "^0.0.0"
+        "chai-typescript-typings": "^0.0.2"
     }
 }
diff --git a/packages/connect/package.json b/packages/connect/package.json
index 9da25a35a..2dbd97dc4 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -2,20 +2,15 @@
     "name": "@0xproject/connect",
     "version": "0.5.3",
     "description": "A javascript library for interacting with the standard relayer api",
-    "keywords": [
-        "connect",
-        "0xproject",
-        "ethereum",
-        "tokens",
-        "exchange"
-    ],
+    "keywords": ["connect", "0xproject", "ethereum", "tokens", "exchange"],
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
     "scripts": {
         "build": "tsc",
         "clean": "shx rm -rf _bundles lib test_temp",
         "docs:json": "typedoc --excludePrivate --excludeExternals --target ES5 --json $JSON_FILE_PATH $PROJECT_DIR",
-        "upload_docs_json": "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
+        "upload_docs_json":
+            "aws s3 cp generated_docs/index.json $S3_URL --profile 0xproject --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers --content-type application/json",
         "copy_test_fixtures": "copyfiles -u 2 './test/fixtures/**/*.json' ./lib/test/fixtures",
         "lint": "tslint --project . 'src/**/*.ts' 'test/**/*.ts'",
         "run_mocha": "mocha lib/test/**/*_test.js",
diff --git a/packages/connect/tsconfig.json b/packages/connect/tsconfig.json
index 3c150236e..fd9e604ad 100644
--- a/packages/connect/tsconfig.json
+++ b/packages/connect/tsconfig.json
@@ -6,6 +6,7 @@
     "include": [
         "./src/**/*",
         "./test/**/*",
+        "../../node_modules/web3-typescript-typings/index.d.ts",
         "../../node_modules/chai-as-promised-typescript-typings/index.d.ts",
         "../../node_modules/chai-typescript-typings/index.d.ts"
     ]
diff --git a/packages/contracts/contracts/Exchange.sol b/packages/contracts/contracts/Exchange.sol
index a402e7ca5..1da74deef 100644
--- a/packages/contracts/contracts/Exchange.sol
+++ b/packages/contracts/contracts/Exchange.sol
@@ -600,4 +600,3 @@ contract Exchange is SafeMath {
         return Token(token).allowance.gas(EXTERNAL_QUERY_GAS_LIMIT)(owner, TOKEN_TRANSFER_PROXY_CONTRACT); // Limit gas to prevent reentrancy
     }
 }
-
diff --git a/packages/contracts/globals.d.ts b/packages/contracts/globals.d.ts
index 2e5827324..0e6586a4b 100644
--- a/packages/contracts/globals.d.ts
+++ b/packages/contracts/globals.d.ts
@@ -32,7 +32,3 @@ declare module 'ethereumjs-abi' {
     const soliditySHA3: (argTypes: string[], args: any[]) => Buffer;
     const methodID: (name: string, types: string[]) => Buffer;
 }
-
-// Truffle injects the following into the global scope
-declare var artifacts: any;
-declare var contract: any;
diff --git a/packages/contracts/migrations/1_initial_migration.ts b/packages/contracts/migrations/1_initial_migration.ts
deleted file mode 100644
index 8661ee218..000000000
--- a/packages/contracts/migrations/1_initial_migration.ts
+++ /dev/null
@@ -1,6 +0,0 @@
-import { Artifacts } from '../util/artifacts';
-const { Migrations } = new Artifacts(artifacts);
-
-module.exports = (deployer: any) => {
-    deployer.deploy(Migrations);
-};
diff --git a/packages/contracts/migrations/2_deploy_independent_contracts.ts b/packages/contracts/migrations/2_deploy_independent_contracts.ts
deleted file mode 100644
index ac1752347..000000000
--- a/packages/contracts/migrations/2_deploy_independent_contracts.ts
+++ /dev/null
@@ -1,41 +0,0 @@
-import { Artifacts } from '../util/artifacts';
-import { MultiSigConfigByNetwork } from '../util/types';
-const { MultiSigWalletWithTimeLock, TokenTransferProxy, EtherToken, TokenRegistry } = new Artifacts(artifacts);
-
-let multiSigConfigByNetwork: MultiSigConfigByNetwork;
-try {
-    /* tslint:disable */
-    const multiSigConfig = require('./config/multisig');
-    multiSigConfigByNetwork = multiSigConfig.multiSig;
-    /* tslint:enable */
-} catch (e) {
-    multiSigConfigByNetwork = {};
-}
-
-module.exports = (deployer: any, network: string, accounts: string[]) => {
-    const defaultConfig = {
-        owners: [accounts[0], accounts[1]],
-        confirmationsRequired: 2,
-        secondsRequired: 0,
-    };
-    const config = multiSigConfigByNetwork[network] || defaultConfig;
-    if (network !== 'live') {
-        deployer
-            .deploy(MultiSigWalletWithTimeLock, config.owners, config.confirmationsRequired, config.secondsRequired)
-            .then(() => {
-                return deployer.deploy(TokenTransferProxy);
-            })
-            .then(() => {
-                return deployer.deploy(TokenRegistry);
-            })
-            .then(() => {
-                return deployer.deploy(EtherToken);
-            });
-    } else {
-        deployer.deploy([
-            [MultiSigWalletWithTimeLock, config.owners, config.confirmationsRequired, config.secondsRequired],
-            TokenTransferProxy,
-            TokenRegistry,
-        ]);
-    }
-};
diff --git a/packages/contracts/migrations/3_register_tokens.ts b/packages/contracts/migrations/3_register_tokens.ts
deleted file mode 100644
index d5cf63f94..000000000
--- a/packages/contracts/migrations/3_register_tokens.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-import * as Bluebird from 'bluebird';
-import * as _ from 'lodash';
-
-import { Artifacts } from '../util/artifacts';
-import { constants } from '../util/constants';
-import { ContractInstance, Token } from '../util/types';
-
-import { tokenInfo } from './config/token_info';
-const { DummyToken, EtherToken, ZRXToken, TokenRegistry } = new Artifacts(artifacts);
-
-module.exports = (deployer: any, network: string) => {
-    const tokens = network === 'live' ? tokenInfo.live : tokenInfo.development;
-    deployer
-        .then(() => {
-            return TokenRegistry.deployed();
-        })
-        .then((tokenRegistry: ContractInstance) => {
-            if (network !== 'live') {
-                const totalSupply = Math.pow(10, 18) * 1000000000;
-                return Bluebird.each(
-                    tokens.map((token: Token) => DummyToken.new(token.name, token.symbol, token.decimals, totalSupply)),
-                    _.noop,
-                ).then((dummyTokens: ContractInstance[]) => {
-                    const weth = {
-                        address: EtherToken.address,
-                        name: 'Ether Token',
-                        symbol: 'WETH',
-                        url: '',
-                        decimals: 18,
-                        ipfsHash: constants.NULL_BYTES,
-                        swarmHash: constants.NULL_BYTES,
-                    };
-                    return Bluebird.each(
-                        dummyTokens
-                            .map((tokenContract: ContractInstance, i: number) => {
-                                const token = tokens[i];
-                                return tokenRegistry.addToken(
-                                    tokenContract.address,
-                                    token.name,
-                                    token.symbol,
-                                    token.decimals,
-                                    token.ipfsHash,
-                                    token.swarmHash,
-                                );
-                            })
-                            .concat(
-                                tokenRegistry.addToken(
-                                    weth.address,
-                                    weth.name,
-                                    weth.symbol,
-                                    weth.decimals,
-                                    weth.ipfsHash,
-                                    weth.swarmHash,
-                                ),
-                            ),
-                        _.noop,
-                    );
-                });
-            } else {
-                const zrx = {
-                    address: ZRXToken.address,
-                    name: '0x Protocol Token',
-                    symbol: 'ZRX',
-                    url: 'https://www.0xproject.com/',
-                    decimals: 18,
-                    ipfsHash: constants.NULL_BYTES,
-                    swarmHash: constants.NULL_BYTES,
-                };
-                return Bluebird.each(
-                    tokens
-                        .map((token: Token) => {
-                            return tokenRegistry.addToken(
-                                token.address,
-                                token.name,
-                                token.symbol,
-                                token.decimals,
-                                token.ipfsHash,
-                                token.swarmHash,
-                            );
-                        })
-                        .concat(
-                            tokenRegistry.addToken(
-                                zrx.address,
-                                zrx.name,
-                                zrx.symbol,
-                                zrx.decimals,
-                                zrx.ipfsHash,
-                                zrx.swarmHash,
-                            ),
-                        ),
-                    _.noop,
-                );
-            }
-        });
-};
diff --git a/packages/contracts/migrations/4_configure_proxy.ts b/packages/contracts/migrations/4_configure_proxy.ts
deleted file mode 100644
index ff3b844d6..000000000
--- a/packages/contracts/migrations/4_configure_proxy.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-import { Artifacts } from '../util/artifacts';
-import { ContractInstance } from '../util/types';
-const { TokenTransferProxy, Exchange, TokenRegistry } = new Artifacts(artifacts);
-
-let tokenTransferProxy: ContractInstance;
-module.exports = (deployer: any) => {
-    deployer
-        .then(async () => {
-            return Promise.all([TokenTransferProxy.deployed(), TokenRegistry.deployed()]);
-        })
-        .then((instances: ContractInstance[]) => {
-            let tokenRegistry: ContractInstance;
-            [tokenTransferProxy, tokenRegistry] = instances;
-            return tokenRegistry.getTokenAddressBySymbol('ZRX');
-        })
-        .then((ptAddress: string) => {
-            return deployer.deploy(Exchange, ptAddress, tokenTransferProxy.address);
-        })
-        .then(() => {
-            return tokenTransferProxy.addAuthorizedAddress(Exchange.address);
-        });
-};
diff --git a/packages/contracts/migrations/5_transfer_ownership.ts b/packages/contracts/migrations/5_transfer_ownership.ts
deleted file mode 100644
index a27801de3..000000000
--- a/packages/contracts/migrations/5_transfer_ownership.ts
+++ /dev/null
@@ -1,20 +0,0 @@
-import { Artifacts } from '../util/artifacts';
-import { ContractInstance } from '../util/types';
-const { TokenTransferProxy, MultiSigWalletWithTimeLock, TokenRegistry } = new Artifacts(artifacts);
-
-let tokenRegistry: ContractInstance;
-module.exports = (deployer: any, network: string) => {
-    if (network !== 'development') {
-        deployer.then(async () => {
-            return Promise.all([TokenTransferProxy.deployed(), TokenRegistry.deployed()])
-                .then((instances: ContractInstance[]) => {
-                    let tokenTransferProxy: ContractInstance;
-                    [tokenTransferProxy, tokenRegistry] = instances;
-                    return tokenTransferProxy.transferOwnership(MultiSigWalletWithTimeLock.address);
-                })
-                .then(() => {
-                    return tokenRegistry.transferOwnership(MultiSigWalletWithTimeLock.address);
-                });
-        });
-    }
-};
diff --git a/packages/contracts/migrations/config/multisig_sample.ts b/packages/contracts/migrations/config/multisig_sample.ts
deleted file mode 100644
index 97cdc2eae..000000000
--- a/packages/contracts/migrations/config/multisig_sample.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { MultiSigConfigByNetwork } from '../../util/types';
-
-// Make a copy of this file named `multisig.js` and input custom params as needed
-export const multiSig: MultiSigConfigByNetwork = {
-    kovan: {
-        owners: [],
-        confirmationsRequired: 0,
-        secondsRequired: 0,
-    },
-};
diff --git a/packages/contracts/migrations/config/token_info.ts b/packages/contracts/migrations/config/token_info.ts
deleted file mode 100644
index 6ae67175e..000000000
--- a/packages/contracts/migrations/config/token_info.ts
+++ /dev/null
@@ -1,99 +0,0 @@
-import { constants } from '../../util/constants';
-import { TokenInfoByNetwork } from '../../util/types';
-
-export const tokenInfo: TokenInfoByNetwork = {
-    development: [
-        {
-            name: '0x Protocol Token',
-            symbol: 'ZRX',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            name: 'Augur Reputation Token',
-            symbol: 'REP',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            name: 'Digix DAO Token',
-            symbol: 'DGD',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            name: 'Golem Network Token',
-            symbol: 'GNT',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            name: 'MakerDAO',
-            symbol: 'MKR',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            name: 'Melon Token',
-            symbol: 'MLN',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-    ],
-    live: [
-        {
-            address: '0xecf8f87f810ecf450940c9f60066b4a7a501d6a7',
-            name: 'ETH Wrapper Token',
-            symbol: 'WETH',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            address: '0x48c80f1f4d53d5951e5d5438b54cba84f29f32a5',
-            name: 'Augur Reputation Token',
-            symbol: 'REP',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            address: '0xe0b7927c4af23765cb51314a0e0521a9645f0e2a',
-            name: 'Digix DAO Token',
-            symbol: 'DGD',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            address: '0xa74476443119a942de498590fe1f2454d7d4ac0d',
-            name: 'Golem Network Token',
-            symbol: 'GNT',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            address: '0xc66ea802717bfb9833400264dd12c2bceaa34a6d',
-            name: 'MakerDAO',
-            symbol: 'MKR',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-        {
-            address: '0xbeb9ef514a379b997e0798fdcc901ee474b6d9a1',
-            name: 'Melon Token',
-            symbol: 'MLN',
-            decimals: 18,
-            ipfsHash: constants.NULL_BYTES,
-            swarmHash: constants.NULL_BYTES,
-        },
-    ],
-};
diff --git a/packages/contracts/package.json b/packages/contracts/package.json
index 3a140b23e..d2f4df0b4 100644
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -8,9 +8,13 @@
         "test": "test"
     },
     "scripts": {
-        "build": "rm -rf ./lib; copyfiles ./build/**/* ./deploy/solc/solc_bin/* ./deploy/test/fixtures/contracts/**/* ./deploy/test/fixtures/contracts/* ./lib; tsc;",
-        "test": "npm run build; truffle test",
-        "compile:comment": "Yarn workspaces do not link binaries correctly so we need to reference them directly https://github.com/yarnpkg/yarn/issues/3846",
+        "prebuild": "run-s clean copy_artifacts",
+        "copy_artifacts": "copyfiles './build/**/*' './deploy/solc/solc_bin/*' './deploy/test/fixtures/contracts/**/*' './deploy/test/fixtures/contracts/*' ./lib",
+        "build": "tsc",
+        "test": "run-s compile build run_mocha",
+        "run_mocha": "mocha 'lib/test/**/*.js' --timeout 10000 --bail --exit",
+        "compile:comment":
+            "Yarn workspaces do not link binaries correctly so we need to reference them directly https://github.com/yarnpkg/yarn/issues/3846",
         "compile": "node ../deployer/lib/src/cli.js compile",
         "clean": "rm -rf ./lib",
         "migrate": "node ../deployer/lib/src/cli.js migrate",
@@ -44,11 +48,11 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "mocha": "^4.0.1",
+        "npm-run-all": "^4.1.2",
         "solc": "^0.4.18",
-        "truffle": "^4.0.1",
         "tslint": "5.8.0",
         "types-bn": "^0.0.1",
-        "types-ethereumjs-util": "0xProject/types-ethereumjs-util",
+        "types-ethereumjs-util": "0xproject/types-ethereumjs-util",
         "typescript": "~2.6.1",
         "web3-typescript-typings": "^0.9.7",
         "yargs": "^10.0.3"
diff --git a/packages/contracts/test/ts/ether_token.ts b/packages/contracts/test/ether_token.ts
index f807cdaa3..4c70534ee 100644
--- a/packages/contracts/test/ts/ether_token.ts
+++ b/packages/contracts/test/ether_token.ts
@@ -1,46 +1,46 @@
 import { ZeroEx, ZeroExError } from '0x.js';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { BigNumber, promisify } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
-import Web3 = require('web3');
 
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
+import { constants } from '../util/constants';
+import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
-
-const { EtherToken } = new Artifacts(artifacts);
+import { deployer } from './utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
-// with type `any` to a variable of type `Web3`.
-const web3: Web3 = (global as any).web3;
-
-contract('EtherToken', (accounts: string[]) => {
-    const account = accounts[0];
+describe('EtherToken', () => {
+    let account: string;
     const gasPrice = ZeroEx.toBaseUnitAmount(new BigNumber(20), 9);
     let zeroEx: ZeroEx;
     let etherTokenAddress: string;
-
     before(async () => {
-        etherTokenAddress = EtherToken.address;
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        account = accounts[0];
+
+        const etherToken = await deployer.deployAsync(ContractName.EtherToken);
+        etherTokenAddress = etherToken.address;
         zeroEx = new ZeroEx(web3.currentProvider, {
             gasPrice,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
     });
-
-    const sendTransactionAsync = promisify<string>(web3.eth.sendTransaction);
-    const getEthBalanceAsync = async (owner: string) => {
-        const balanceStr = await promisify<string>(web3.eth.getBalance)(owner);
-        const balance = new BigNumber(balanceStr);
-        return balance;
-    };
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('deposit', () => {
         it('should throw if caller attempts to deposit more Ether than caller balance', async () => {
-            const initEthBalance = await getEthBalanceAsync(account);
+            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const ethToDeposit = initEthBalance.plus(1);
 
             return expect(zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account)).to.be.rejectedWith(
@@ -49,7 +49,7 @@ contract('EtherToken', (accounts: string[]) => {
         });
 
         it('should convert deposited Ether to wrapped Ether tokens', async () => {
-            const initEthBalance = await getEthBalanceAsync(account);
+            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
             const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
@@ -58,7 +58,7 @@ contract('EtherToken', (accounts: string[]) => {
             const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await getEthBalanceAsync(account);
+            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
             expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
@@ -77,8 +77,10 @@ contract('EtherToken', (accounts: string[]) => {
         });
 
         it('should convert ether tokens to ether with sufficient balance', async () => {
+            const ethToDeposit = new BigNumber(web3.toWei(1, 'ether'));
+            await zeroEx.etherToken.depositAsync(etherTokenAddress, ethToDeposit, account);
             const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
-            const initEthBalance = await getEthBalanceAsync(account);
+            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const ethTokensToWithdraw = initEthTokenBalance;
             expect(ethTokensToWithdraw).to.not.be.bignumber.equal(0);
             const txHash = await zeroEx.etherToken.withdrawAsync(etherTokenAddress, ethTokensToWithdraw, account, {
@@ -87,7 +89,7 @@ contract('EtherToken', (accounts: string[]) => {
             const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await getEthBalanceAsync(account);
+            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
             expect(finalEthBalance).to.be.bignumber.equal(
@@ -99,12 +101,12 @@ contract('EtherToken', (accounts: string[]) => {
 
     describe('fallback', () => {
         it('should convert sent ether to ether tokens', async () => {
-            const initEthBalance = await getEthBalanceAsync(account);
+            const initEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const initEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
             const ethToDeposit = ZeroEx.toBaseUnitAmount(new BigNumber(1), 18);
 
-            const txHash = await sendTransactionAsync({
+            const txHash = await web3Wrapper.sendTransactionAsync({
                 from: account,
                 to: etherTokenAddress,
                 value: ethToDeposit,
@@ -114,7 +116,7 @@ contract('EtherToken', (accounts: string[]) => {
             const receipt = await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const ethSpentOnGas = gasPrice.times(receipt.gasUsed);
-            const finalEthBalance = await getEthBalanceAsync(account);
+            const finalEthBalance = await web3Wrapper.getBalanceInWeiAsync(account);
             const finalEthTokenBalance = await zeroEx.token.getBalanceAsync(etherTokenAddress, account);
 
             expect(finalEthBalance).to.be.bignumber.equal(initEthBalance.minus(ethToDeposit.plus(ethSpentOnGas)));
diff --git a/packages/contracts/test/ts/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index 770ef0c43..e9182dd1b 100644
--- a/packages/contracts/test/ts/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -1,41 +1,47 @@
-import { ZeroEx } from '0x.js';
+import {
+    LogCancelContractEventArgs,
+    LogErrorContractEventArgs,
+    LogFillContractEventArgs,
+    LogWithDecodedArgs,
+    TransactionReceiptWithDecodedLogs,
+    ZeroEx,
+} from '0x.js';
+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 ethUtil = require('ethereumjs-util');
 import * as Web3 from 'web3';
 
-import { Artifacts } from '../../../util/artifacts';
-import { Balances } from '../../../util/balances';
-import { constants } from '../../../util/constants';
-import { crypto } from '../../../util/crypto';
-import { ExchangeWrapper } from '../../../util/exchange_wrapper';
-import { Order } from '../../../util/order';
-import { OrderFactory } from '../../../util/order_factory';
-import { BalancesByOwner, ContractInstance, ExchangeContractErrs } from '../../../util/types';
+import { Balances } from '../../util/balances';
+import { constants } from '../../util/constants';
+import { crypto } from '../../util/crypto';
+import { ExchangeWrapper } from '../../util/exchange_wrapper';
+import { Order } from '../../util/order';
+import { OrderFactory } from '../../util/order_factory';
+import { BalancesByOwner, ContractName, ExchangeContractErrs } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
+import { deployer } from '../utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const { Exchange, TokenTransferProxy, DummyToken, TokenRegistry, MaliciousToken } = new Artifacts(artifacts);
-
-// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
-// with type `any` to a variable of type `Web3`.
-const web3: Web3 = (global as any).web3;
-
-contract('Exchange', (accounts: string[]) => {
-    const maker = accounts[0];
-    const tokenOwner = accounts[0];
-    const taker = accounts[1] || accounts[accounts.length - 1];
-    const feeRecipient = accounts[2] || accounts[accounts.length - 1];
-
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
+
+describe('Exchange', () => {
+    let maker: string;
+    let tokenOwner: string;
+    let taker: string;
+    let feeRecipient: string;
     const INITIAL_BALANCE = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
     const INITIAL_ALLOWANCE = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
 
-    let rep: ContractInstance;
-    let dgd: ContractInstance;
-    let zrx: ContractInstance;
-    let exchange: ContractInstance;
-    let tokenRegistry: ContractInstance;
+    let rep: Web3.ContractInstance;
+    let dgd: Web3.ContractInstance;
+    let zrx: Web3.ContractInstance;
+    let exchange: Web3.ContractInstance;
+    let tokenTransferProxy: Web3.ContractInstance;
 
     let order: Order;
     let balances: BalancesByOwner;
@@ -46,66 +52,69 @@ contract('Exchange', (accounts: string[]) => {
     let zeroEx: ZeroEx;
 
     before(async () => {
-        [tokenRegistry, exchange] = await Promise.all([TokenRegistry.deployed(), Exchange.deployed()]);
-        exWrapper = new ExchangeWrapper(exchange);
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        maker = accounts[0];
+        [tokenOwner, taker, feeRecipient] = accounts;
+        [rep, dgd, zrx] = await Promise.all([
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
+        ]);
+        tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+        exchange = await deployer.deployAsync(ContractName.Exchange, [zrx.address, tokenTransferProxy.address]);
+        await tokenTransferProxy.addAuthorizedAddress(exchange.address, { from: accounts[0] });
         zeroEx = new ZeroEx(web3.currentProvider, {
             exchangeContractAddress: exchange.address,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
-
-        const [repAddress, dgdAddress, zrxAddress] = await Promise.all([
-            tokenRegistry.getTokenAddressBySymbol('REP'),
-            tokenRegistry.getTokenAddressBySymbol('DGD'),
-            tokenRegistry.getTokenAddressBySymbol('ZRX'),
-        ]);
+        exWrapper = new ExchangeWrapper(exchange, zeroEx);
 
         const defaultOrderParams = {
-            exchangeContractAddress: Exchange.address,
+            exchangeContractAddress: exchange.address,
             maker,
             feeRecipient,
-            makerToken: repAddress,
-            takerToken: dgdAddress,
+            makerToken: rep.address,
+            takerToken: dgd.address,
             makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
             takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
             makerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
             takerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
         };
-        orderFactory = new OrderFactory(defaultOrderParams);
-
-        [rep, dgd, zrx] = await Promise.all([
-            DummyToken.at(repAddress),
-            DummyToken.at(dgdAddress),
-            DummyToken.at(zrxAddress),
-        ]);
+        orderFactory = new OrderFactory(web3Wrapper, defaultOrderParams);
         dmyBalances = new Balances([rep, dgd, zrx], [maker, taker, feeRecipient]);
         await Promise.all([
-            rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            rep.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: maker,
             }),
-            rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            rep.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: taker,
             }),
             rep.setBalance(maker, INITIAL_BALANCE, { from: tokenOwner }),
             rep.setBalance(taker, INITIAL_BALANCE, { from: tokenOwner }),
-            dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            dgd.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: maker,
             }),
-            dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            dgd.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: taker,
             }),
             dgd.setBalance(maker, INITIAL_BALANCE, { from: tokenOwner }),
             dgd.setBalance(taker, INITIAL_BALANCE, { from: tokenOwner }),
-            zrx.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            zrx.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: maker,
             }),
-            zrx.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            zrx.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: taker,
             }),
             zrx.setBalance(maker, INITIAL_BALANCE, { from: tokenOwner }),
             zrx.setBalance(taker, INITIAL_BALANCE, { from: tokenOwner }),
         ]);
     });
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('internal functions', () => {
         it('should include transferViaTokenTransferProxy', () => {
             expect(exchange.transferViaTokenTransferProxy).to.be.undefined();
@@ -136,9 +145,8 @@ contract('Exchange', (accounts: string[]) => {
                 takerTokenAmount: new BigNumber(3),
             });
 
-            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
 
             const fillTakerTokenAmount1 = new BigNumber(2);
@@ -146,9 +154,8 @@ contract('Exchange', (accounts: string[]) => {
                 fillTakerTokenAmount: fillTakerTokenAmount1,
             });
 
-            const filledTakerTokenAmountAfter1 = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter1 = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountAfter1).to.be.bignumber.equal(fillTakerTokenAmount1);
 
             const fillTakerTokenAmount2 = new BigNumber(1);
@@ -156,9 +163,8 @@ contract('Exchange', (accounts: string[]) => {
                 fillTakerTokenAmount: fillTakerTokenAmount2,
             });
 
-            const filledTakerTokenAmountAfter2 = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter2 = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountAfter2).to.be.bignumber.equal(filledTakerTokenAmountAfter1);
         });
 
@@ -168,17 +174,15 @@ contract('Exchange', (accounts: string[]) => {
                 takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
             });
 
-            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
 
             const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
             await exWrapper.fillOrderAsync(order, taker, { fillTakerTokenAmount });
 
-            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
 
             const newBalances = await dmyBalances.getAsync();
@@ -221,17 +225,15 @@ contract('Exchange', (accounts: string[]) => {
                 takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
             });
 
-            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
 
             const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
             await exWrapper.fillOrderAsync(order, taker, { fillTakerTokenAmount });
 
-            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
 
             const newBalances = await dmyBalances.getAsync();
@@ -274,17 +276,15 @@ contract('Exchange', (accounts: string[]) => {
                 takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
             });
 
-            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
 
             const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
             await exWrapper.fillOrderAsync(order, taker, { fillTakerTokenAmount });
 
-            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(fillTakerTokenAmount);
 
             const newBalances = await dmyBalances.getAsync();
@@ -328,17 +328,15 @@ contract('Exchange', (accounts: string[]) => {
                 takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
             });
 
-            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountBefore = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             expect(filledTakerTokenAmountBefore).to.be.bignumber.equal(0);
 
             const fillTakerTokenAmount = order.params.takerTokenAmount.div(2);
             await exWrapper.fillOrderAsync(order, taker, { fillTakerTokenAmount });
 
-            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(
-                order.params.orderHashHex,
-            );
+            const filledTakerTokenAmountAfter = await zeroEx.exchange.getFilledTakerAmountAsync(order.params
+                .orderHashHex as string);
             const expectedFillAmountTAfter = fillTakerTokenAmount.add(filledTakerTokenAmountBefore);
             expect(filledTakerTokenAmountAfter).to.be.bignumber.equal(expectedFillAmountTAfter);
 
@@ -383,8 +381,8 @@ contract('Exchange', (accounts: string[]) => {
             const res = await exWrapper.fillOrderAsync(order, taker, {
                 fillTakerTokenAmount: order.params.takerTokenAmount,
             });
-
-            expect(res.logs[0].args.filledTakerTokenAmount).to.be.bignumber.equal(
+            const log = res.logs[0] as LogWithDecodedArgs<LogFillContractEventArgs>;
+            expect(log.args.filledTakerTokenAmount).to.be.bignumber.equal(
                 order.params.takerTokenAmount.minus(fillTakerTokenAmount),
             );
             const newBalances = await dmyBalances.getAsync();
@@ -419,7 +417,7 @@ contract('Exchange', (accounts: string[]) => {
             });
             expect(res.logs).to.have.length(1);
 
-            const logArgs = res.logs[0].args;
+            const logArgs = (res.logs[0] as LogWithDecodedArgs<LogFillContractEventArgs>).args;
             const expectedFilledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
             const expectedFilledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
             const expectedFeeMPaid = order.params.makerFee.div(divisor);
@@ -450,7 +448,7 @@ contract('Exchange', (accounts: string[]) => {
             });
             expect(res.logs).to.have.length(1);
 
-            const logArgs = res.logs[0].args;
+            const logArgs = (res.logs[0] as LogWithDecodedArgs<LogFillContractEventArgs>).args;
             const expectedFilledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
             const expectedFilledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
             const expectedFeeMPaid = new BigNumber(0);
@@ -567,9 +565,9 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should not change balances if maker allowances are too low to fill order and \
                 shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
-            await rep.approve(TokenTransferProxy.address, 0, { from: maker });
+            await rep.approve(tokenTransferProxy.address, 0, { from: maker });
             await exWrapper.fillOrderAsync(order, taker);
-            await rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            await rep.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: maker,
             });
 
@@ -579,22 +577,22 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should throw if maker allowances are too low to fill order and \
                 shouldThrowOnInsufficientBalanceOrAllowance = true', async () => {
-            await rep.approve(TokenTransferProxy.address, 0, { from: maker });
+            await rep.approve(tokenTransferProxy.address, 0, { from: maker });
             expect(
                 exWrapper.fillOrderAsync(order, taker, {
                     shouldThrowOnInsufficientBalanceOrAllowance: true,
                 }),
             ).to.be.rejectedWith(constants.REVERT);
-            await rep.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            await rep.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: maker,
             });
         });
 
         it('should not change balances if taker allowances are too low to fill order and \
                 shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
-            await dgd.approve(TokenTransferProxy.address, 0, { from: taker });
+            await dgd.approve(tokenTransferProxy.address, 0, { from: taker });
             await exWrapper.fillOrderAsync(order, taker);
-            await dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            await dgd.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: taker,
             });
 
@@ -604,13 +602,13 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should throw if taker allowances are too low to fill order and \
                 shouldThrowOnInsufficientBalanceOrAllowance = true', async () => {
-            await dgd.approve(TokenTransferProxy.address, 0, { from: taker });
+            await dgd.approve(tokenTransferProxy.address, 0, { from: taker });
             expect(
                 exWrapper.fillOrderAsync(order, taker, {
                     shouldThrowOnInsufficientBalanceOrAllowance: true,
                 }),
             ).to.be.rejectedWith(constants.REVERT);
-            await dgd.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, {
+            await dgd.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, {
                 from: taker,
             });
         });
@@ -630,7 +628,7 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should not change balances if makerToken is ZRX, makerTokenAmount + makerFee > maker allowance, \
                 and shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
-            const makerZRXAllowance = await zrx.allowance(maker, TokenTransferProxy.address);
+            const makerZRXAllowance = await zrx.allowance(maker, tokenTransferProxy.address);
             order = await orderFactory.newSignedOrderAsync({
                 makerToken: zrx.address,
                 makerTokenAmount: new BigNumber(makerZRXAllowance),
@@ -656,7 +654,7 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should not change balances if takerToken is ZRX, takerTokenAmount + takerFee > taker allowance, \
                 and shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
-            const takerZRXAllowance = await zrx.allowance(taker, TokenTransferProxy.address);
+            const takerZRXAllowance = await zrx.allowance(taker, tokenTransferProxy.address);
             order = await orderFactory.newSignedOrderAsync({
                 takerToken: zrx.address,
                 takerTokenAmount: new BigNumber(takerZRXAllowance),
@@ -669,8 +667,8 @@ contract('Exchange', (accounts: string[]) => {
 
         it('should throw if getBalance or getAllowance attempts to change state and \
                 shouldThrowOnInsufficientBalanceOrAllowance = false', async () => {
-            const maliciousToken = await MaliciousToken.new();
-            await maliciousToken.approve(TokenTransferProxy.address, INITIAL_ALLOWANCE, { from: taker });
+            const maliciousToken = await deployer.deployAsync(ContractName.MaliciousToken);
+            await maliciousToken.approve(tokenTransferProxy.address, INITIAL_ALLOWANCE, { from: taker });
 
             order = await orderFactory.newSignedOrderAsync({
                 takerToken: maliciousToken.address,
@@ -680,7 +678,7 @@ contract('Exchange', (accounts: string[]) => {
                 exWrapper.fillOrderAsync(order, taker, {
                     shouldThrowOnInsufficientBalanceOrAllowance: false,
                 }),
-            ).to.be.rejectedWith(constants.REVERT);
+            ).to.be.rejectedWith(constants.INVALID_OPCODE);
         });
 
         it('should not change balances if an order is expired', async () => {
@@ -700,16 +698,19 @@ contract('Exchange', (accounts: string[]) => {
 
             const res = await exWrapper.fillOrderAsync(order, taker);
             expect(res.logs).to.have.length(1);
-            const errCode = res.logs[0].args.errorId.toNumber();
+            const log = res.logs[0] as LogWithDecodedArgs<LogErrorContractEventArgs>;
+            const errCode = log.args.errorId.toNumber();
             expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_EXPIRED);
         });
 
         it('should log an error event if no value is filled', async () => {
+            order = await orderFactory.newSignedOrderAsync({});
             await exWrapper.fillOrderAsync(order, taker);
 
             const res = await exWrapper.fillOrderAsync(order, taker);
             expect(res.logs).to.have.length(1);
-            const errCode = res.logs[0].args.errorId.toNumber();
+            const log = res.logs[0] as LogWithDecodedArgs<LogErrorContractEventArgs>;
+            const errCode = log.args.errorId.toNumber();
             expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_FULLY_FILLED_OR_CANCELLED);
         });
     });
@@ -769,7 +770,8 @@ contract('Exchange', (accounts: string[]) => {
             const res = await exWrapper.fillOrderAsync(order, taker, {
                 fillTakerTokenAmount: order.params.takerTokenAmount,
             });
-            expect(res.logs[0].args.filledTakerTokenAmount).to.be.bignumber.equal(
+            const log = res.logs[0] as LogWithDecodedArgs<LogFillContractEventArgs>;
+            expect(log.args.filledTakerTokenAmount).to.be.bignumber.equal(
                 order.params.takerTokenAmount.minus(cancelTakerTokenAmount),
             );
 
@@ -813,7 +815,8 @@ contract('Exchange', (accounts: string[]) => {
             });
             expect(res.logs).to.have.length(1);
 
-            const logArgs = res.logs[0].args;
+            const log = res.logs[0] as LogWithDecodedArgs<LogCancelContractEventArgs>;
+            const logArgs = log.args;
             const expectedCancelledMakerTokenAmount = order.params.makerTokenAmount.div(divisor);
             const expectedCancelledTakerTokenAmount = order.params.takerTokenAmount.div(divisor);
             const tokensHashBuff = crypto.solSHA3([order.params.makerToken, order.params.takerToken]);
@@ -834,7 +837,8 @@ contract('Exchange', (accounts: string[]) => {
 
             const res = await exWrapper.cancelOrderAsync(order, maker);
             expect(res.logs).to.have.length(1);
-            const errCode = res.logs[0].args.errorId.toNumber();
+            const log = res.logs[0] as LogWithDecodedArgs<LogErrorContractEventArgs>;
+            const errCode = log.args.errorId.toNumber();
             expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_FULLY_FILLED_OR_CANCELLED);
         });
 
@@ -845,7 +849,8 @@ contract('Exchange', (accounts: string[]) => {
 
             const res = await exWrapper.cancelOrderAsync(order, maker);
             expect(res.logs).to.have.length(1);
-            const errCode = res.logs[0].args.errorId.toNumber();
+            const log = res.logs[0] as LogWithDecodedArgs<LogErrorContractEventArgs>;
+            const errCode = log.args.errorId.toNumber();
             expect(errCode).to.be.equal(ExchangeContractErrs.ERROR_ORDER_EXPIRED);
         });
     });
diff --git a/packages/contracts/test/ts/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 95f68e419..5efce41a4 100644
--- a/packages/contracts/test/ts/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -1,52 +1,68 @@
 import { ZeroEx } from '0x.js';
+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 ethUtil = require('ethereumjs-util');
 
-import { Artifacts } from '../../../util/artifacts';
-import { ExchangeWrapper } from '../../../util/exchange_wrapper';
-import { Order } from '../../../util/order';
-import { OrderFactory } from '../../../util/order_factory';
+import { constants } from '../../util/constants';
+import { ExchangeWrapper } from '../../util/exchange_wrapper';
+import { Order } from '../../util/order';
+import { OrderFactory } from '../../util/order_factory';
+import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
+import { deployer } from '../utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
 
-const { Exchange, TokenRegistry } = new Artifacts(artifacts);
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('Exchange', (accounts: string[]) => {
-    const maker = accounts[0];
-    const feeRecipient = accounts[1] || accounts[accounts.length - 1];
+describe('Exchange', () => {
+    let maker: string;
+    let feeRecipient: string;
 
     let order: Order;
     let exchangeWrapper: ExchangeWrapper;
     let orderFactory: OrderFactory;
 
     before(async () => {
-        const [tokenRegistry, exchange] = await Promise.all([TokenRegistry.deployed(), Exchange.deployed()]);
-        exchangeWrapper = new ExchangeWrapper(exchange);
-        const [repAddress, dgdAddress] = await Promise.all([
-            tokenRegistry.getTokenAddressBySymbol('REP'),
-            tokenRegistry.getTokenAddressBySymbol('DGD'),
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        [maker, feeRecipient] = accounts;
+        const tokenRegistry = await deployer.deployAsync(ContractName.TokenRegistry);
+        const tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+        const [rep, dgd, zrx] = await Promise.all([
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
         ]);
+        const exchange = await deployer.deployAsync(ContractName.Exchange, [zrx.address, tokenTransferProxy.address]);
+        await tokenTransferProxy.addAuthorizedAddress(exchange.address, { from: accounts[0] });
+        const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+        exchangeWrapper = new ExchangeWrapper(exchange, zeroEx);
         const defaultOrderParams = {
-            exchangeContractAddress: Exchange.address,
+            exchangeContractAddress: exchange.address,
             maker,
             feeRecipient,
-            makerToken: repAddress,
-            takerToken: dgdAddress,
+            makerToken: rep.address,
+            takerToken: dgd.address,
             makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
             takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
             makerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
             takerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
         };
-        orderFactory = new OrderFactory(defaultOrderParams);
+        orderFactory = new OrderFactory(web3Wrapper, defaultOrderParams);
+        order = await orderFactory.newSignedOrderAsync();
     });
 
     beforeEach(async () => {
-        order = await orderFactory.newSignedOrderAsync();
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
     });
-
     describe('getOrderHash', () => {
         it('should output the correct orderHash', async () => {
             const orderHashHex = await exchangeWrapper.getOrderHashAsync(order);
diff --git a/packages/contracts/test/ts/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index e69e08bcf..acdf481a9 100644
--- a/packages/contracts/test/ts/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -1,35 +1,41 @@
 import { ZeroEx } from '0x.js';
+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 * as _ from 'lodash';
-
-import { Artifacts } from '../../../util/artifacts';
-import { Balances } from '../../../util/balances';
-import { constants } from '../../../util/constants';
-import { ExchangeWrapper } from '../../../util/exchange_wrapper';
-import { Order } from '../../../util/order';
-import { OrderFactory } from '../../../util/order_factory';
-import { BalancesByOwner, ContractInstance } from '../../../util/types';
+import * as Web3 from 'web3';
+
+import { Balances } from '../../util/balances';
+import { constants } from '../../util/constants';
+import { ExchangeWrapper } from '../../util/exchange_wrapper';
+import { Order } from '../../util/order';
+import { OrderFactory } from '../../util/order_factory';
+import { BalancesByOwner, ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
+import { deployer } from '../utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const { Exchange, TokenTransferProxy, DummyToken, TokenRegistry } = new Artifacts(artifacts);
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('Exchange', (accounts: string[]) => {
-    const maker = accounts[0];
-    const tokenOwner = accounts[0];
-    const taker = accounts[1] || accounts[accounts.length - 1];
-    const feeRecipient = accounts[2] || accounts[accounts.length - 1];
+describe('Exchange', () => {
+    let maker: string;
+    let tokenOwner: string;
+    let taker: string;
+    let feeRecipient: string;
 
     const INIT_BAL = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
     const INIT_ALLOW = ZeroEx.toBaseUnitAmount(new BigNumber(10000), 18);
 
-    let rep: ContractInstance;
-    let dgd: ContractInstance;
-    let zrx: ContractInstance;
-    let exchange: ContractInstance;
-    let tokenRegistry: ContractInstance;
+    let rep: Web3.ContractInstance;
+    let dgd: Web3.ContractInstance;
+    let zrx: Web3.ContractInstance;
+    let exchange: Web3.ContractInstance;
+    let tokenRegistry: Web3.ContractInstance;
+    let tokenTransferProxy: Web3.ContractInstance;
 
     let balances: BalancesByOwner;
 
@@ -38,49 +44,56 @@ contract('Exchange', (accounts: string[]) => {
     let orderFactory: OrderFactory;
 
     before(async () => {
-        [tokenRegistry, exchange] = await Promise.all([TokenRegistry.deployed(), Exchange.deployed()]);
-        exWrapper = new ExchangeWrapper(exchange);
-        const [repAddress, dgdAddress, zrxAddress] = await Promise.all([
-            tokenRegistry.getTokenAddressBySymbol('REP'),
-            tokenRegistry.getTokenAddressBySymbol('DGD'),
-            tokenRegistry.getTokenAddressBySymbol('ZRX'),
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        tokenOwner = accounts[0];
+        [maker, taker, feeRecipient] = accounts;
+        [rep, dgd, zrx] = await Promise.all([
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
+            deployer.deployAsync(ContractName.DummyToken),
         ]);
+        tokenRegistry = await deployer.deployAsync(ContractName.TokenRegistry);
+        tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+        exchange = await deployer.deployAsync(ContractName.Exchange, [zrx.address, tokenTransferProxy.address]);
+        await tokenTransferProxy.addAuthorizedAddress(exchange.address, { from: accounts[0] });
+        const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+        exWrapper = new ExchangeWrapper(exchange, zeroEx);
 
         const defaultOrderParams = {
-            exchangeContractAddress: Exchange.address,
+            exchangeContractAddress: exchange.address,
             maker,
             feeRecipient,
-            makerToken: repAddress,
-            takerToken: dgdAddress,
+            makerToken: rep.address,
+            takerToken: dgd.address,
             makerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(100), 18),
             takerTokenAmount: ZeroEx.toBaseUnitAmount(new BigNumber(200), 18),
             makerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
             takerFee: ZeroEx.toBaseUnitAmount(new BigNumber(1), 18),
         };
-        orderFactory = new OrderFactory(defaultOrderParams);
 
-        [rep, dgd, zrx] = await Promise.all([
-            DummyToken.at(repAddress),
-            DummyToken.at(dgdAddress),
-            DummyToken.at(zrxAddress),
-        ]);
+        orderFactory = new OrderFactory(web3Wrapper, defaultOrderParams);
         dmyBalances = new Balances([rep, dgd, zrx], [maker, taker, feeRecipient]);
         await Promise.all([
-            rep.approve(TokenTransferProxy.address, INIT_ALLOW, { from: maker }),
-            rep.approve(TokenTransferProxy.address, INIT_ALLOW, { from: taker }),
+            rep.approve(tokenTransferProxy.address, INIT_ALLOW, { from: maker }),
+            rep.approve(tokenTransferProxy.address, INIT_ALLOW, { from: taker }),
             rep.setBalance(maker, INIT_BAL, { from: tokenOwner }),
             rep.setBalance(taker, INIT_BAL, { from: tokenOwner }),
-            dgd.approve(TokenTransferProxy.address, INIT_ALLOW, { from: maker }),
-            dgd.approve(TokenTransferProxy.address, INIT_ALLOW, { from: taker }),
+            dgd.approve(tokenTransferProxy.address, INIT_ALLOW, { from: maker }),
+            dgd.approve(tokenTransferProxy.address, INIT_ALLOW, { from: taker }),
             dgd.setBalance(maker, INIT_BAL, { from: tokenOwner }),
             dgd.setBalance(taker, INIT_BAL, { from: tokenOwner }),
-            zrx.approve(TokenTransferProxy.address, INIT_ALLOW, { from: maker }),
-            zrx.approve(TokenTransferProxy.address, INIT_ALLOW, { from: taker }),
+            zrx.approve(tokenTransferProxy.address, INIT_ALLOW, { from: maker }),
+            zrx.approve(tokenTransferProxy.address, INIT_ALLOW, { from: taker }),
             zrx.setBalance(maker, INIT_BAL, { from: tokenOwner }),
             zrx.setBalance(taker, INIT_BAL, { from: tokenOwner }),
         ]);
     });
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('fillOrKillOrder', () => {
         beforeEach(async () => {
             balances = await dmyBalances.getAsync();
diff --git a/packages/contracts/test/multi_sig_with_time_lock.ts b/packages/contracts/test/multi_sig_with_time_lock.ts
new file mode 100644
index 000000000..bd64be1ba
--- /dev/null
+++ b/packages/contracts/test/multi_sig_with_time_lock.ts
@@ -0,0 +1,191 @@
+import { LogWithDecodedArgs, ZeroEx } from '0x.js';
+import { BlockchainLifecycle, RPC, web3Factory } from '@0xproject/dev-utils';
+import { AbiDecoder, BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as chai from 'chai';
+import * as Web3 from 'web3';
+
+import * as multiSigWalletJSON from '../../build/contracts/MultiSigWalletWithTimeLock.json';
+import { artifacts } from '../util/artifacts';
+import { constants } from '../util/constants';
+import { MultiSigWrapper } from '../util/multi_sig_wrapper';
+import { ContractName, SubmissionContractEventArgs } from '../util/types';
+
+import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
+
+const MULTI_SIG_ABI = artifacts.MultiSigWalletWithTimeLockArtifact.networks[constants.TESTRPC_NETWORK_ID].abi;
+chaiSetup.configure();
+const expect = chai.expect;
+
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
+const zeroEx = new ZeroEx(web3.currentProvider, { networkId: constants.TESTRPC_NETWORK_ID });
+const abiDecoder = new AbiDecoder([MULTI_SIG_ABI]);
+
+describe('MultiSigWalletWithTimeLock', () => {
+    let owners: string[];
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owners = [accounts[0], accounts[1]];
+    });
+    const SIGNATURES_REQUIRED = 2;
+    const SECONDS_TIME_LOCKED = 10000;
+
+    let multiSig: Web3.ContractInstance;
+    let multiSigWrapper: MultiSigWrapper;
+    let txId: number;
+    let initialSecondsTimeLocked: number;
+    let rpc: RPC;
+
+    before(async () => {
+        rpc = new RPC();
+    });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
+
+    describe('changeTimeLock', () => {
+        describe('initially non-time-locked', async () => {
+            before('deploy a walet', async () => {
+                multiSig = await deployer.deployAsync(ContractName.MultiSigWalletWithTimeLock, [
+                    owners,
+                    SIGNATURES_REQUIRED,
+                    0,
+                ]);
+                multiSigWrapper = new MultiSigWrapper(multiSig);
+
+                const secondsTimeLocked = await multiSig.secondsTimeLocked();
+                initialSecondsTimeLocked = secondsTimeLocked.toNumber();
+            });
+            it('should throw when not called by wallet', async () => {
+                return expect(multiSig.changeTimeLock(SECONDS_TIME_LOCKED, { from: owners[0] })).to.be.rejectedWith(
+                    constants.REVERT,
+                );
+            });
+
+            it('should throw without enough confirmations', async () => {
+                const destination = multiSig.address;
+                const from = owners[0];
+                const dataParams = {
+                    name: 'changeTimeLock',
+                    abi: MULTI_SIG_ABI,
+                    args: [SECONDS_TIME_LOCKED],
+                };
+                const txHash = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
+                const subRes = await zeroEx.awaitTransactionMinedAsync(txHash);
+                const log = abiDecoder.tryToDecodeLogOrNoop(subRes.logs[0]) as LogWithDecodedArgs<
+                    SubmissionContractEventArgs
+                >;
+
+                txId = log.args.transactionId.toNumber();
+                return expect(multiSig.executeTransaction(txId, { from: owners[0] })).to.be.rejectedWith(
+                    constants.REVERT,
+                );
+            });
+
+            it('should set confirmation time with enough confirmations', async () => {
+                const destination = multiSig.address;
+                const from = owners[0];
+                const dataParams = {
+                    name: 'changeTimeLock',
+                    abi: MULTI_SIG_ABI,
+                    args: [SECONDS_TIME_LOCKED],
+                };
+                let txHash = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
+                const subRes = await zeroEx.awaitTransactionMinedAsync(txHash);
+                const log = abiDecoder.tryToDecodeLogOrNoop(subRes.logs[0]) as LogWithDecodedArgs<
+                    SubmissionContractEventArgs
+                >;
+
+                txId = log.args.transactionId.toNumber();
+                txHash = await multiSig.confirmTransaction(txId, { from: owners[1] });
+                const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+                expect(res.logs).to.have.length(2);
+
+                const blockNum = await web3Wrapper.getBlockNumberAsync();
+                const blockInfo = await web3Wrapper.getBlockAsync(blockNum);
+                const timestamp = new BigNumber(blockInfo.timestamp);
+                const confirmationTimeBigNum = new BigNumber(await multiSig.confirmationTimes.call(txId));
+
+                expect(timestamp).to.be.bignumber.equal(confirmationTimeBigNum);
+            });
+
+            it('should be executable with enough confirmations and secondsTimeLocked of 0', async () => {
+                const destination = multiSig.address;
+                const from = owners[0];
+                const dataParams = {
+                    name: 'changeTimeLock',
+                    abi: MULTI_SIG_ABI,
+                    args: [SECONDS_TIME_LOCKED],
+                };
+                let txHash = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
+                const subRes = await zeroEx.awaitTransactionMinedAsync(txHash);
+                const log = abiDecoder.tryToDecodeLogOrNoop(subRes.logs[0]) as LogWithDecodedArgs<
+                    SubmissionContractEventArgs
+                >;
+
+                txId = log.args.transactionId.toNumber();
+                txHash = await multiSig.confirmTransaction(txId, { from: owners[1] });
+
+                expect(initialSecondsTimeLocked).to.be.equal(0);
+
+                txHash = await multiSig.executeTransaction(txId, { from: owners[0] });
+                const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+                expect(res.logs).to.have.length(2);
+
+                const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
+                expect(secondsTimeLocked).to.be.bignumber.equal(SECONDS_TIME_LOCKED);
+            });
+        });
+        describe('initially time-locked', async () => {
+            before('deploy a walet', async () => {
+                multiSig = await deployer.deployAsync(ContractName.MultiSigWalletWithTimeLock, [
+                    owners,
+                    SIGNATURES_REQUIRED,
+                    SECONDS_TIME_LOCKED,
+                ]);
+                multiSigWrapper = new MultiSigWrapper(multiSig);
+
+                const secondsTimeLocked = await multiSig.secondsTimeLocked();
+                initialSecondsTimeLocked = secondsTimeLocked.toNumber();
+                const destination = multiSig.address;
+                const from = owners[0];
+                const dataParams = {
+                    name: 'changeTimeLock',
+                    abi: MULTI_SIG_ABI,
+                    args: [newSecondsTimeLocked],
+                };
+                let txHash = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
+                const subRes = await zeroEx.awaitTransactionMinedAsync(txHash);
+                const log = abiDecoder.tryToDecodeLogOrNoop(subRes.logs[0]) as LogWithDecodedArgs<
+                    SubmissionContractEventArgs
+                >;
+                txId = log.args.transactionId.toNumber();
+                txHash = await multiSig.confirmTransaction(txId, {
+                    from: owners[1],
+                });
+                const confRes = await zeroEx.awaitTransactionMinedAsync(txHash);
+                expect(confRes.logs).to.have.length(2);
+            });
+            const newSecondsTimeLocked = 0;
+            it('should throw if it has enough confirmations but is not past the time lock', async () => {
+                return expect(multiSig.executeTransaction(txId, { from: owners[0] })).to.be.rejectedWith(
+                    constants.REVERT,
+                );
+            });
+
+            it('should execute if it has enough confirmations and is past the time lock', async () => {
+                await rpc.increaseTimeAsync(SECONDS_TIME_LOCKED);
+                await multiSig.executeTransaction(txId, { from: owners[0] });
+
+                const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
+                expect(secondsTimeLocked).to.be.bignumber.equal(newSecondsTimeLocked);
+            });
+        });
+    });
+});
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
new file mode 100644
index 000000000..f6b7c1d53
--- /dev/null
+++ b/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
@@ -0,0 +1,181 @@
+import { LogWithDecodedArgs, ZeroEx } from '0x.js';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
+import { AbiDecoder } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import * as chai from 'chai';
+import * as Web3 from 'web3';
+
+import { artifacts } from '../util/artifacts';
+import { constants } from '../util/constants';
+import { crypto } from '../util/crypto';
+import { MultiSigWrapper } from '../util/multi_sig_wrapper';
+import { ContractName, SubmissionContractEventArgs, TransactionDataParams } from '../util/types';
+
+import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
+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]
+        .abi;
+
+chaiSetup.configure();
+const expect = chai.expect;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
+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 });
+    let owners: string[];
+    const requiredApprovals = 2;
+    const SECONDS_TIME_LOCKED = 1000000;
+
+    // initialize fake addresses
+    let authorizedAddress: string;
+    let unauthorizedAddress: string;
+
+    let tokenTransferProxy: Web3.ContractInstance;
+    let multiSig: Web3.ContractInstance;
+    let multiSigWrapper: MultiSigWrapper;
+
+    let validDestination: string;
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owners = [accounts[0], accounts[1]];
+        [authorizedAddress, unauthorizedAddress] = accounts;
+        const initialOwner = accounts[0];
+        tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+        await tokenTransferProxy.addAuthorizedAddress(authorizedAddress, {
+            from: initialOwner,
+        });
+        multiSig = await deployer.deployAsync(ContractName.MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress, [
+            owners,
+            requiredApprovals,
+            SECONDS_TIME_LOCKED,
+            tokenTransferProxy.address,
+        ]);
+        await tokenTransferProxy.transferOwnership(multiSig.address, {
+            from: initialOwner,
+        });
+        multiSigWrapper = new MultiSigWrapper(multiSig);
+        validDestination = tokenTransferProxy.address;
+    });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
+
+    describe('isFunctionRemoveAuthorizedAddress', () => {
+        it('should throw if data is not for removeAuthorizedAddress', async () => {
+            const data = MultiSigWrapper.encodeFnArgs('addAuthorizedAddress', PROXY_ABI, [owners[0]]);
+            return expect(multiSig.isFunctionRemoveAuthorizedAddress.call(data)).to.be.rejectedWith(constants.REVERT);
+        });
+
+        it('should return true if data is for removeAuthorizedAddress', async () => {
+            const data = MultiSigWrapper.encodeFnArgs('removeAuthorizedAddress', PROXY_ABI, [owners[0]]);
+            const isFunctionRemoveAuthorizedAddress = await multiSig.isFunctionRemoveAuthorizedAddress.call(data);
+            expect(isFunctionRemoveAuthorizedAddress).to.be.true();
+        });
+    });
+
+    describe('executeRemoveAuthorizedAddress', () => {
+        it('should throw without the required confirmations', async () => {
+            const dataParams: TransactionDataParams = {
+                name: 'removeAuthorizedAddress',
+                abi: PROXY_ABI,
+                args: [authorizedAddress],
+            };
+            const txHash = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
+            const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+            const log = abiDecoder.tryToDecodeLogOrNoop(res.logs[0]) as LogWithDecodedArgs<SubmissionContractEventArgs>;
+            const txId = log.args.transactionId.toString();
+
+            return expect(multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] })).to.be.rejectedWith(
+                constants.REVERT,
+            );
+        });
+
+        it('should throw if tx destination is not the tokenTransferProxy', async () => {
+            const invalidTokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+            const invalidDestination = invalidTokenTransferProxy.address;
+            const dataParams: TransactionDataParams = {
+                name: 'removeAuthorizedAddress',
+                abi: PROXY_ABI,
+                args: [authorizedAddress],
+            };
+            const txHash = await multiSigWrapper.submitTransactionAsync(invalidDestination, owners[0], dataParams);
+            const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+            const log = abiDecoder.tryToDecodeLogOrNoop(res.logs[0]) as LogWithDecodedArgs<SubmissionContractEventArgs>;
+            const txId = log.args.transactionId.toString();
+            await multiSig.confirmTransaction(txId, { from: owners[1] });
+            const isConfirmed = await multiSig.isConfirmed.call(txId);
+            expect(isConfirmed).to.be.true();
+
+            return expect(multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] })).to.be.rejectedWith(
+                constants.REVERT,
+            );
+        });
+
+        it('should throw if tx data is not for removeAuthorizedAddress', async () => {
+            const dataParams: TransactionDataParams = {
+                name: 'addAuthorizedAddress',
+                abi: PROXY_ABI,
+                args: [unauthorizedAddress],
+            };
+            const txHash = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
+            const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+            const log = abiDecoder.tryToDecodeLogOrNoop(res.logs[0]) as LogWithDecodedArgs<SubmissionContractEventArgs>;
+            const txId = log.args.transactionId.toString();
+            await multiSig.confirmTransaction(txId, { from: owners[1] });
+            const isConfirmed = await multiSig.isConfirmed.call(txId);
+            expect(isConfirmed).to.be.true();
+
+            return expect(multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] })).to.be.rejectedWith(
+                constants.REVERT,
+            );
+        });
+
+        it('should execute removeAuthorizedAddress for valid tokenTransferProxy if fully confirmed', async () => {
+            const dataParams: TransactionDataParams = {
+                name: 'removeAuthorizedAddress',
+                abi: PROXY_ABI,
+                args: [authorizedAddress],
+            };
+            const txHash = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
+            const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+            const log = abiDecoder.tryToDecodeLogOrNoop(res.logs[0]) as LogWithDecodedArgs<SubmissionContractEventArgs>;
+            const txId = log.args.transactionId.toString();
+            await multiSig.confirmTransaction(txId, { from: owners[1] });
+            const isConfirmed = await multiSig.isConfirmed.call(txId);
+            expect(isConfirmed).to.be.true();
+            await multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] });
+            const isAuthorized = await tokenTransferProxy.authorized.call(authorizedAddress);
+            expect(isAuthorized).to.be.false();
+        });
+
+        it('should throw if already executed', async () => {
+            const dataParams: TransactionDataParams = {
+                name: 'removeAuthorizedAddress',
+                abi: PROXY_ABI,
+                args: [authorizedAddress],
+            };
+            const txHash = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
+            const res = await zeroEx.awaitTransactionMinedAsync(txHash);
+            const log = abiDecoder.tryToDecodeLogOrNoop(res.logs[0]) as LogWithDecodedArgs<SubmissionContractEventArgs>;
+            const txId = log.args.transactionId.toString();
+            await multiSig.confirmTransaction(txId, { from: owners[1] });
+            const isConfirmed = await multiSig.isConfirmed(txId);
+            expect(isConfirmed).to.be.true();
+            await multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] });
+            const tx = await multiSig.transactions(txId);
+            const isExecuted = tx[3];
+            expect(isExecuted).to.be.true();
+            return expect(multiSig.executeRemoveAuthorizedAddress(txId, { from: owners[1] })).to.be.rejectedWith(
+                constants.REVERT,
+            );
+        });
+    });
+});
diff --git a/packages/contracts/test/ts/token_registry.ts b/packages/contracts/test/token_registry.ts
index d1c551565..2a270dc2f 100644
--- a/packages/contracts/test/ts/token_registry.ts
+++ b/packages/contracts/test/token_registry.ts
@@ -1,22 +1,42 @@
 import { ZeroEx } from '0x.js';
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
+import * as Web3 from 'web3';
 
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { TokenRegWrapper } from '../../util/token_registry_wrapper';
-import { ContractInstance } from '../../util/types';
+import { constants } from '../util/constants';
+import { TokenRegWrapper } from '../util/token_registry_wrapper';
+import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
 
-const { TokenRegistry } = new Artifacts(artifacts);
 chaiSetup.configure();
 const expect = chai.expect;
-
-contract('TokenRegistry', (accounts: string[]) => {
-    const owner = accounts[0];
-    const notOwner = accounts[1];
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
+
+describe('TokenRegistry', () => {
+    let owner: string;
+    let notOwner: string;
+    let tokenReg: Web3.ContractInstance;
+    let tokenRegWrapper: TokenRegWrapper;
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = accounts[0];
+        notOwner = accounts[1];
+        tokenReg = await deployer.deployAsync(ContractName.TokenRegistry);
+        tokenRegWrapper = new TokenRegWrapper(tokenReg);
+    });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
 
     const tokenAddress1 = `0x${ethUtil.setLength(ethUtil.toBuffer('0x1'), 20, false).toString('hex')}`;
     const tokenAddress2 = `0x${ethUtil.setLength(ethUtil.toBuffer('0x2'), 20, false).toString('hex')}`;
@@ -48,14 +68,6 @@ contract('TokenRegistry', (accounts: string[]) => {
         swarmHash: constants.NULL_BYTES,
     };
 
-    let tokenReg: ContractInstance;
-    let tokenRegWrapper: TokenRegWrapper;
-
-    beforeEach(async () => {
-        tokenReg = await TokenRegistry.new();
-        tokenRegWrapper = new TokenRegWrapper(tokenReg);
-    });
-
     describe('addToken', () => {
         it('should throw when not called by owner', async () => {
             return expect(tokenRegWrapper.addTokenAsync(token1, notOwner)).to.be.rejectedWith(constants.REVERT);
@@ -125,10 +137,9 @@ contract('TokenRegistry', (accounts: string[]) => {
             });
 
             it('should change the token name when called by owner', async () => {
-                const res = await tokenReg.setTokenName(token1.address, token2.name, {
+                await tokenReg.setTokenName(token1.address, token2.name, {
                     from: owner,
                 });
-                expect(res.logs).to.have.length(1);
                 const [newData, oldData] = await Promise.all([
                     tokenRegWrapper.getTokenByNameAsync(token2.name),
                     tokenRegWrapper.getTokenByNameAsync(token1.name),
@@ -165,8 +176,7 @@ contract('TokenRegistry', (accounts: string[]) => {
             });
 
             it('should change the token symbol when called by owner', async () => {
-                const res = await tokenReg.setTokenSymbol(token1.address, token2.symbol, { from: owner });
-                expect(res.logs).to.have.length(1);
+                await tokenReg.setTokenSymbol(token1.address, token2.symbol, { from: owner });
                 const [newData, oldData] = await Promise.all([
                     tokenRegWrapper.getTokenBySymbolAsync(token2.symbol),
                     tokenRegWrapper.getTokenBySymbolAsync(token1.symbol),
@@ -207,10 +217,9 @@ contract('TokenRegistry', (accounts: string[]) => {
 
             it('should remove token metadata when called by owner', async () => {
                 const index = 0;
-                const res = await tokenReg.removeToken(token1.address, index, {
+                await tokenReg.removeToken(token1.address, index, {
                     from: owner,
                 });
-                expect(res.logs).to.have.length(1);
                 const tokenData = await tokenRegWrapper.getTokenMetaDataAsync(token1.address);
                 expect(tokenData).to.be.deep.equal(nullToken);
             });
diff --git a/packages/contracts/test/ts/token_transfer_proxy/auth.ts b/packages/contracts/test/token_transfer_proxy/auth.ts
index 9ae0a8fc3..b2bfc6b65 100644
--- a/packages/contracts/test/ts/token_transfer_proxy/auth.ts
+++ b/packages/contracts/test/token_transfer_proxy/auth.ts
@@ -1,44 +1,50 @@
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import * as Web3 from 'web3';
 
-import { constants } from '../../../util/constants';
-import { ContractInstance } from '../../../util/types';
+import { constants } from '../../util/constants';
+import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
+import { deployer } from '../utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const TokenTransferProxy = artifacts.require('./db/TokenTransferProxy.sol');
-
-contract('TokenTransferProxy', (accounts: string[]) => {
-    const owner = accounts[0];
-    const notOwner = accounts[1];
-
-    let tokenTransferProxy: ContractInstance;
-    let authorized: string;
-    let notAuthorized = owner;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
+describe('TokenTransferProxy', () => {
+    let owner: string;
+    let notOwner: string;
+    let address: string;
+    let tokenTransferProxy: Web3.ContractInstance;
     before(async () => {
-        tokenTransferProxy = await TokenTransferProxy.deployed();
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = address = accounts[0];
+        notOwner = accounts[1];
+        tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+    });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
     });
-
     describe('addAuthorizedAddress', () => {
         it('should throw if not called by owner', async () => {
             return expect(tokenTransferProxy.addAuthorizedAddress(notOwner, { from: notOwner })).to.be.rejectedWith(
                 constants.REVERT,
             );
         });
-
         it('should allow owner to add an authorized address', async () => {
-            await tokenTransferProxy.addAuthorizedAddress(notAuthorized, {
-                from: owner,
-            });
-            authorized = notAuthorized;
-            notAuthorized = null;
-            const isAuthorized = await tokenTransferProxy.authorized.call(authorized);
+            await tokenTransferProxy.addAuthorizedAddress(address, { from: owner });
+            const isAuthorized = await tokenTransferProxy.authorized(address);
             expect(isAuthorized).to.be.true();
         });
-
         it('should throw if owner attempts to authorize a duplicate address', async () => {
-            return expect(tokenTransferProxy.addAuthorizedAddress(authorized, { from: owner })).to.be.rejectedWith(
+            await tokenTransferProxy.addAuthorizedAddress(address, { from: owner });
+            return expect(tokenTransferProxy.addAuthorizedAddress(address, { from: owner })).to.be.rejectedWith(
                 constants.REVERT,
             );
         });
@@ -46,27 +52,26 @@ contract('TokenTransferProxy', (accounts: string[]) => {
 
     describe('removeAuthorizedAddress', () => {
         it('should throw if not called by owner', async () => {
+            await tokenTransferProxy.addAuthorizedAddress(address, { from: owner });
             return expect(
-                tokenTransferProxy.removeAuthorizedAddress(authorized, {
+                tokenTransferProxy.removeAuthorizedAddress(address, {
                     from: notOwner,
                 }),
             ).to.be.rejectedWith(constants.REVERT);
         });
 
         it('should allow owner to remove an authorized address', async () => {
-            await tokenTransferProxy.removeAuthorizedAddress(authorized, {
+            await tokenTransferProxy.addAuthorizedAddress(address, { from: owner });
+            await tokenTransferProxy.removeAuthorizedAddress(address, {
                 from: owner,
             });
-            notAuthorized = authorized;
-            authorized = null;
-
-            const isAuthorized = await tokenTransferProxy.authorized.call(notAuthorized);
+            const isAuthorized = await tokenTransferProxy.authorized(address);
             expect(isAuthorized).to.be.false();
         });
 
         it('should throw if owner attempts to remove an address that is not authorized', async () => {
             return expect(
-                tokenTransferProxy.removeAuthorizedAddress(notAuthorized, {
+                tokenTransferProxy.removeAuthorizedAddress(address, {
                     from: owner,
                 }),
             ).to.be.rejectedWith(constants.REVERT);
@@ -76,24 +81,19 @@ contract('TokenTransferProxy', (accounts: string[]) => {
     describe('getAuthorizedAddresses', () => {
         it('should return all authorized addresses', async () => {
             const initial = await tokenTransferProxy.getAuthorizedAddresses();
-            expect(initial).to.have.length(1);
-            await tokenTransferProxy.addAuthorizedAddress(notAuthorized, {
+            expect(initial).to.have.length(0);
+            await tokenTransferProxy.addAuthorizedAddress(address, {
                 from: owner,
             });
-
-            authorized = notAuthorized;
-            notAuthorized = null;
             const afterAdd = await tokenTransferProxy.getAuthorizedAddresses();
-            expect(afterAdd).to.have.length(2);
-            expect(afterAdd).to.include(authorized);
+            expect(afterAdd).to.have.length(1);
+            expect(afterAdd).to.include(address);
 
-            await tokenTransferProxy.removeAuthorizedAddress(authorized, {
+            await tokenTransferProxy.removeAuthorizedAddress(address, {
                 from: owner,
             });
-            notAuthorized = authorized;
-            authorized = null;
             const afterRemove = await tokenTransferProxy.getAuthorizedAddresses();
-            expect(afterRemove).to.have.length(1);
+            expect(afterRemove).to.have.length(0);
         });
     });
 });
diff --git a/packages/contracts/test/ts/token_transfer_proxy/transfer_from.ts b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
index e1aff6dae..bd7adcfae 100644
--- a/packages/contracts/test/ts/token_transfer_proxy/transfer_from.ts
+++ b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
@@ -1,47 +1,55 @@
+import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import * as Web3 from 'web3';
 
-import { Artifacts } from '../../../util/artifacts';
-import { Balances } from '../../../util/balances';
-import { constants } from '../../../util/constants';
-import { ContractInstance } from '../../../util/types';
+import { Balances } from '../../util/balances';
+import { constants } from '../../util/constants';
+import { ContractName } from '../../util/types';
 import { chaiSetup } from '../utils/chai_setup';
+import { deployer } from '../utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const { TokenTransferProxy, DummyToken, TokenRegistry } = new Artifacts(artifacts);
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('TokenTransferProxy', (accounts: string[]) => {
+describe('TokenTransferProxy', () => {
+    let accounts: string[];
+    let owner: string;
+    let notAuthorized: string;
     const INIT_BAL = 100000000;
     const INIT_ALLOW = 100000000;
 
-    const owner = accounts[0];
-    const notAuthorized = owner;
-
-    let tokenTransferProxy: ContractInstance;
-    let tokenRegistry: ContractInstance;
-    let rep: ContractInstance;
+    let tokenTransferProxy: Web3.ContractInstance;
+    let rep: Web3.ContractInstance;
     let dmyBalances: Balances;
 
     before(async () => {
-        [tokenTransferProxy, tokenRegistry] = await Promise.all([
-            TokenTransferProxy.deployed(),
-            TokenRegistry.deployed(),
-        ]);
-        const repAddress = await tokenRegistry.getTokenAddressBySymbol('REP');
-        rep = DummyToken.at(repAddress);
+        accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = notAuthorized = accounts[0];
+        tokenTransferProxy = await deployer.deployAsync(ContractName.TokenTransferProxy);
+        rep = await deployer.deployAsync(ContractName.DummyToken);
 
         dmyBalances = new Balances([rep], [accounts[0], accounts[1]]);
         await Promise.all([
-            rep.approve(TokenTransferProxy.address, INIT_ALLOW, {
+            rep.approve(tokenTransferProxy.address, INIT_ALLOW, {
                 from: accounts[0],
             }),
             rep.setBalance(accounts[0], INIT_BAL, { from: owner }),
-            rep.approve(TokenTransferProxy.address, INIT_ALLOW, {
+            rep.approve(tokenTransferProxy.address, INIT_ALLOW, {
                 from: accounts[1],
             }),
             rep.setBalance(accounts[1], INIT_BAL, { from: owner }),
         ]);
     });
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
 
     describe('transferFrom', () => {
         it('should throw when called by an unauthorized address', async () => {
diff --git a/packages/contracts/test/ts/multi_sig_with_time_lock.ts b/packages/contracts/test/ts/multi_sig_with_time_lock.ts
deleted file mode 100644
index ea939a758..000000000
--- a/packages/contracts/test/ts/multi_sig_with_time_lock.ts
+++ /dev/null
@@ -1,115 +0,0 @@
-import { RPC } from '@0xproject/dev-utils';
-import { BigNumber, promisify } from '@0xproject/utils';
-import * as chai from 'chai';
-import Web3 = require('web3');
-
-import * as multiSigWalletJSON from '../../build/contracts/MultiSigWalletWithTimeLock.json';
-import * as truffleConf from '../../truffle.js';
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { MultiSigWrapper } from '../../util/multi_sig_wrapper';
-import { ContractInstance } from '../../util/types';
-
-import { chaiSetup } from './utils/chai_setup';
-
-const { MultiSigWalletWithTimeLock } = new Artifacts(artifacts);
-
-const MULTI_SIG_ABI = (multiSigWalletJSON as any).abi;
-chaiSetup.configure();
-const expect = chai.expect;
-
-// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
-// with type `any` to a variable of type `Web3`.
-const web3: Web3 = (global as any).web3;
-
-contract('MultiSigWalletWithTimeLock', (accounts: string[]) => {
-    const owners = [accounts[0], accounts[1]];
-    const SECONDS_TIME_LOCKED = 10000;
-
-    let multiSig: ContractInstance;
-    let multiSigWrapper: MultiSigWrapper;
-    let txId: number;
-    let initialSecondsTimeLocked: number;
-    let rpc: RPC;
-
-    before(async () => {
-        multiSig = await MultiSigWalletWithTimeLock.deployed();
-        multiSigWrapper = new MultiSigWrapper(multiSig);
-
-        const secondsTimeLocked = await multiSig.secondsTimeLocked.call();
-        initialSecondsTimeLocked = secondsTimeLocked.toNumber();
-        const rpcUrl = `http://${truffleConf.networks.development.host}:${truffleConf.networks.development.port}`;
-        rpc = new RPC(rpcUrl);
-    });
-
-    describe('changeTimeLock', () => {
-        it('should throw when not called by wallet', async () => {
-            return expect(multiSig.changeTimeLock(SECONDS_TIME_LOCKED, { from: owners[0] })).to.be.rejectedWith(
-                constants.REVERT,
-            );
-        });
-
-        it('should throw without enough confirmations', async () => {
-            const destination = multiSig.address;
-            const from = owners[0];
-            const dataParams = {
-                name: 'changeTimeLock',
-                abi: MULTI_SIG_ABI,
-                args: [SECONDS_TIME_LOCKED],
-            };
-            const subRes = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
-
-            txId = subRes.logs[0].args.transactionId.toNumber();
-            return expect(multiSig.executeTransaction(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should set confirmation time with enough confirmations', async () => {
-            const res = await multiSig.confirmTransaction(txId, { from: owners[1] });
-            expect(res.logs).to.have.length(2);
-            const blockNum = await promisify<number>(web3.eth.getBlockNumber)();
-            const blockInfo = await promisify<Web3.BlockWithoutTransactionData>(web3.eth.getBlock)(blockNum);
-            const timestamp = new BigNumber(blockInfo.timestamp);
-            const confirmationTimeBigNum = new BigNumber(await multiSig.confirmationTimes.call(txId));
-
-            expect(timestamp).to.be.bignumber.equal(confirmationTimeBigNum);
-        });
-
-        it('should be executable with enough confirmations and secondsTimeLocked of 0', async () => {
-            expect(initialSecondsTimeLocked).to.be.equal(0);
-
-            const res = await multiSig.executeTransaction(txId);
-            expect(res.logs).to.have.length(2);
-
-            const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
-            expect(secondsTimeLocked).to.be.bignumber.equal(SECONDS_TIME_LOCKED);
-        });
-
-        const newSecondsTimeLocked = 0;
-        it('should throw if it has enough confirmations but is not past the time lock', async () => {
-            const destination = multiSig.address;
-            const from = owners[0];
-            const dataParams = {
-                name: 'changeTimeLock',
-                abi: MULTI_SIG_ABI,
-                args: [newSecondsTimeLocked],
-            };
-            const subRes = await multiSigWrapper.submitTransactionAsync(destination, from, dataParams);
-
-            txId = subRes.logs[0].args.transactionId.toNumber();
-            const confRes = await multiSig.confirmTransaction(txId, {
-                from: owners[1],
-            });
-            expect(confRes.logs).to.have.length(2);
-
-            return expect(multiSig.executeTransaction(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should execute if it has enough confirmations and is past the time lock', async () => {
-            await rpc.increaseTimeAsync(SECONDS_TIME_LOCKED);
-            await multiSig.executeTransaction(txId);
-
-            const secondsTimeLocked = new BigNumber(await multiSig.secondsTimeLocked.call());
-            expect(secondsTimeLocked).to.be.bignumber.equal(newSecondsTimeLocked);
-        });
-    });
-});
diff --git a/packages/contracts/test/ts/multi_sig_with_time_lock_except_remove_auth_addr.ts b/packages/contracts/test/ts/multi_sig_with_time_lock_except_remove_auth_addr.ts
deleted file mode 100644
index 62aa625fe..000000000
--- a/packages/contracts/test/ts/multi_sig_with_time_lock_except_remove_auth_addr.ts
+++ /dev/null
@@ -1,150 +0,0 @@
-import * as chai from 'chai';
-
-import * as tokenTransferProxyJSON from '../../build/contracts/TokenTransferProxy.json';
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { crypto } from '../../util/crypto';
-import { MultiSigWrapper } from '../../util/multi_sig_wrapper';
-import { ContractInstance, TransactionDataParams } from '../../util/types';
-
-import { chaiSetup } from './utils/chai_setup';
-const { TokenTransferProxy, MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress } = new Artifacts(artifacts);
-const PROXY_ABI = (tokenTransferProxyJSON as any).abi;
-
-chaiSetup.configure();
-const expect = chai.expect;
-
-contract('MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress', (accounts: string[]) => {
-    const owners = [accounts[0], accounts[1]];
-    const requiredApprovals = 2;
-    const SECONDS_TIME_LOCKED = 1000000;
-
-    // initialize fake addresses
-    const authorizedAddress = `0x${crypto
-        .solSHA3([accounts[0]])
-        .slice(0, 20)
-        .toString('hex')}`;
-    const unauthorizedAddress = `0x${crypto
-        .solSHA3([accounts[1]])
-        .slice(0, 20)
-        .toString('hex')}`;
-
-    let tokenTransferProxy: ContractInstance;
-    let multiSig: ContractInstance;
-    let multiSigWrapper: MultiSigWrapper;
-
-    let validDestination: string;
-
-    beforeEach(async () => {
-        const initialOwner = accounts[0];
-        tokenTransferProxy = await TokenTransferProxy.new({ from: initialOwner });
-        await tokenTransferProxy.addAuthorizedAddress(authorizedAddress, {
-            from: initialOwner,
-        });
-        multiSig = await MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.new(
-            owners,
-            requiredApprovals,
-            SECONDS_TIME_LOCKED,
-            tokenTransferProxy.address,
-        );
-        await tokenTransferProxy.transferOwnership(multiSig.address, {
-            from: initialOwner,
-        });
-        multiSigWrapper = new MultiSigWrapper(multiSig);
-        validDestination = tokenTransferProxy.address;
-    });
-
-    describe('isFunctionRemoveAuthorizedAddress', () => {
-        it('should throw if data is not for removeAuthorizedAddress', async () => {
-            const data = MultiSigWrapper.encodeFnArgs('addAuthorizedAddress', PROXY_ABI, [owners[0]]);
-            return expect(multiSig.isFunctionRemoveAuthorizedAddress.call(data)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should return true if data is for removeAuthorizedAddress', async () => {
-            const data = MultiSigWrapper.encodeFnArgs('removeAuthorizedAddress', PROXY_ABI, [owners[0]]);
-            const isFunctionRemoveAuthorizedAddress = await multiSig.isFunctionRemoveAuthorizedAddress.call(data);
-            expect(isFunctionRemoveAuthorizedAddress).to.be.true();
-        });
-    });
-
-    describe('executeRemoveAuthorizedAddress', () => {
-        it('should throw without the required confirmations', async () => {
-            const dataParams: TransactionDataParams = {
-                name: 'removeAuthorizedAddress',
-                abi: PROXY_ABI,
-                args: [authorizedAddress],
-            };
-            const res = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
-            const txId = res.logs[0].args.transactionId.toString();
-
-            return expect(multiSig.executeRemoveAuthorizedAddress(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should throw if tx destination is not the tokenTransferProxy', async () => {
-            const invalidTokenTransferProxy = await TokenTransferProxy.new();
-            const invalidDestination = invalidTokenTransferProxy.address;
-            const dataParams: TransactionDataParams = {
-                name: 'removeAuthorizedAddress',
-                abi: PROXY_ABI,
-                args: [authorizedAddress],
-            };
-            const res = await multiSigWrapper.submitTransactionAsync(invalidDestination, owners[0], dataParams);
-            const txId = res.logs[0].args.transactionId.toString();
-            await multiSig.confirmTransaction(txId, { from: owners[1] });
-            const isConfirmed = await multiSig.isConfirmed.call(txId);
-            expect(isConfirmed).to.be.true();
-
-            return expect(multiSig.executeRemoveAuthorizedAddress(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should throw if tx data is not for removeAuthorizedAddress', async () => {
-            const dataParams: TransactionDataParams = {
-                name: 'addAuthorizedAddress',
-                abi: PROXY_ABI,
-                args: [unauthorizedAddress],
-            };
-            const res = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
-            const txId = res.logs[0].args.transactionId.toString();
-            await multiSig.confirmTransaction(txId, { from: owners[1] });
-            const isConfirmed = await multiSig.isConfirmed.call(txId);
-            expect(isConfirmed).to.be.true();
-
-            return expect(multiSig.executeRemoveAuthorizedAddress(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-
-        it('should execute removeAuthorizedAddress for valid tokenTransferProxy if fully confirmed', async () => {
-            const dataParams: TransactionDataParams = {
-                name: 'removeAuthorizedAddress',
-                abi: PROXY_ABI,
-                args: [authorizedAddress],
-            };
-            const res = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
-            const txId = res.logs[0].args.transactionId.toString();
-            await multiSig.confirmTransaction(txId, { from: owners[1] });
-            const isConfirmed = await multiSig.isConfirmed.call(txId);
-            expect(isConfirmed).to.be.true();
-            await multiSig.executeRemoveAuthorizedAddress(txId);
-
-            const isAuthorized = await tokenTransferProxy.authorized.call(authorizedAddress);
-            expect(isAuthorized).to.be.false();
-        });
-
-        it('should throw if already executed', async () => {
-            const dataParams: TransactionDataParams = {
-                name: 'removeAuthorizedAddress',
-                abi: PROXY_ABI,
-                args: [authorizedAddress],
-            };
-            const res = await multiSigWrapper.submitTransactionAsync(validDestination, owners[0], dataParams);
-            const txId = res.logs[0].args.transactionId.toString();
-            await multiSig.confirmTransaction(txId, { from: owners[1] });
-            const isConfirmed = await multiSig.isConfirmed.call(txId);
-            expect(isConfirmed).to.be.true();
-            await multiSig.executeRemoveAuthorizedAddress(txId);
-            const tx = await multiSig.transactions.call(txId);
-            const isExecuted = tx[3];
-            expect(isExecuted).to.be.true();
-            return expect(multiSig.executeRemoveAuthorizedAddress(txId)).to.be.rejectedWith(constants.REVERT);
-        });
-    });
-});
diff --git a/packages/contracts/test/ts/unlimited_allowance_token.ts b/packages/contracts/test/unlimited_allowance_token.ts
index c90a52095..7f4fef987 100644
--- a/packages/contracts/test/ts/unlimited_allowance_token.ts
+++ b/packages/contracts/test/unlimited_allowance_token.ts
@@ -1,37 +1,48 @@
 import { ZeroEx } from '0x.js';
+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 * as Web3 from 'web3';
 
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { ContractInstance } from '../../util/types';
+import { constants } from '../util/constants';
+import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
 
-const { DummyToken } = new Artifacts(artifacts);
-const web3: Web3 = (global as any).web3;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
 chaiSetup.configure();
 const expect = chai.expect;
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('UnlimitedAllowanceToken', (accounts: string[]) => {
+describe('UnlimitedAllowanceToken', () => {
+    let owner: string;
+    let spender: string;
     const config = {
         networkId: constants.TESTRPC_NETWORK_ID,
     };
     const zeroEx = new ZeroEx(web3.currentProvider, config);
-    const owner = accounts[0];
-    const spender = accounts[1];
 
     const MAX_MINT_VALUE = new BigNumber(100000000000000000000);
     let tokenAddress: string;
-    let token: ContractInstance;
+    let token: Web3.ContractInstance;
 
-    beforeEach(async () => {
-        token = await DummyToken.new({ from: owner });
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = accounts[0];
+        spender = accounts[1];
+        token = await deployer.deployAsync(ContractName.DummyToken);
         await token.mint(MAX_MINT_VALUE, { from: owner });
         tokenAddress = token.address;
     });
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('transfer', () => {
         it('should transfer balance from sender to receiver', async () => {
             const receiver = spender;
diff --git a/packages/contracts/test/ts/unlimited_allowance_token_v2.ts b/packages/contracts/test/unlimited_allowance_token_v2.ts
index 1b29a02ba..440cc11ac 100644
--- a/packages/contracts/test/ts/unlimited_allowance_token_v2.ts
+++ b/packages/contracts/test/unlimited_allowance_token_v2.ts
@@ -1,37 +1,48 @@
 import { ZeroEx } from '0x.js';
+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 * as Web3 from 'web3';
 
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { ContractInstance } from '../../util/types';
+import { constants } from '../util/constants';
+import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
 
-const { DummyTokenV2 } = new Artifacts(artifacts);
-const web3: Web3 = (global as any).web3;
 chaiSetup.configure();
 const expect = chai.expect;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('UnlimitedAllowanceTokenV2', (accounts: string[]) => {
+describe('UnlimitedAllowanceTokenV2', () => {
     const config = {
         networkId: constants.TESTRPC_NETWORK_ID,
     };
     const zeroEx = new ZeroEx(web3.currentProvider, config);
-    const owner = accounts[0];
-    const spender = accounts[1];
+    let owner: string;
+    let spender: string;
 
     const MAX_MINT_VALUE = new BigNumber(100000000000000000000);
     let tokenAddress: string;
-    let token: ContractInstance;
+    let token: Web3.ContractInstance;
 
-    beforeEach(async () => {
-        token = await DummyTokenV2.new({ from: owner });
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = accounts[0];
+        spender = accounts[1];
+        token = await deployer.deployAsync(ContractName.DummyToken_v2);
         await token.mint(MAX_MINT_VALUE, { from: owner });
         tokenAddress = token.address;
     });
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('transfer', () => {
         it('should throw if owner has insufficient balance', async () => {
             const ownerBalance = await zeroEx.token.getBalanceAsync(tokenAddress, owner);
diff --git a/packages/contracts/test/ts/utils/chai_setup.ts b/packages/contracts/test/utils/chai_setup.ts
index 078edd309..078edd309 100644
--- a/packages/contracts/test/ts/utils/chai_setup.ts
+++ b/packages/contracts/test/utils/chai_setup.ts
diff --git a/packages/contracts/test/utils/deployer.ts b/packages/contracts/test/utils/deployer.ts
new file mode 100644
index 000000000..4c6eeff2b
--- /dev/null
+++ b/packages/contracts/test/utils/deployer.ts
@@ -0,0 +1,16 @@
+import { Deployer } from '@0xproject/deployer';
+import { devConstants } from '@0xproject/dev-utils';
+import * as path from 'path';
+
+import { constants } from '../../util/constants';
+
+const deployerOpts = {
+    artifactsDir: `${path.resolve('build')}/artifacts`,
+    jsonrpcPort: devConstants.RPC_PORT,
+    networkId: constants.TESTRPC_NETWORK_ID,
+    defaults: {
+        gas: devConstants.GAS_ESTIMATE,
+    },
+};
+
+export const deployer = new Deployer(deployerOpts);
diff --git a/packages/contracts/test/ts/zrx_token.ts b/packages/contracts/test/zrx_token.ts
index 766c94c2a..1844a67af 100644
--- a/packages/contracts/test/ts/zrx_token.ts
+++ b/packages/contracts/test/zrx_token.ts
@@ -1,60 +1,70 @@
 import { ZeroEx } from '0x.js';
+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 Web3 = require('web3');
+import * as Web3 from 'web3';
 
-import { Artifacts } from '../../util/artifacts';
-import { constants } from '../../util/constants';
-import { ContractInstance } from '../../util/types';
+import { constants } from '../util/constants';
+import { ContractName } from '../util/types';
 
 import { chaiSetup } from './utils/chai_setup';
+import { deployer } from './utils/deployer';
 
 chaiSetup.configure();
 const expect = chai.expect;
-const { Exchange, ZRXToken } = new Artifacts(artifacts);
-const web3: Web3 = (global as any).web3;
+const web3 = web3Factory.create();
+const web3Wrapper = new Web3Wrapper(web3.currentProvider);
+const blockchainLifecycle = new BlockchainLifecycle();
 
-contract('ZRXToken', (accounts: string[]) => {
-    const owner = accounts[0];
-    const spender = accounts[1];
+describe('ZRXToken', () => {
+    let owner: string;
+    let spender: string;
     let zeroEx: ZeroEx;
 
     let MAX_UINT: BigNumber;
 
-    let zrx: ContractInstance;
+    let zrx: Web3.ContractInstance;
     let zrxAddress: string;
 
-    beforeEach(async () => {
+    before(async () => {
+        const accounts = await web3Wrapper.getAvailableAddressesAsync();
+        owner = accounts[0];
+        spender = accounts[1];
         zeroEx = new ZeroEx(web3.currentProvider, {
-            exchangeContractAddress: Exchange.address,
             networkId: constants.TESTRPC_NETWORK_ID,
         });
-        zrx = await ZRXToken.new();
+        zrx = await deployer.deployAsync(ContractName.ZRXToken);
         zrxAddress = zrx.address;
         MAX_UINT = zeroEx.token.UNLIMITED_ALLOWANCE_IN_BASE_UNITS;
     });
-
+    beforeEach(async () => {
+        await blockchainLifecycle.startAsync();
+    });
+    afterEach(async () => {
+        await blockchainLifecycle.revertAsync();
+    });
     describe('constants', () => {
         it('should have 18 decimals', async () => {
-            const decimals = new BigNumber(await zrx.decimals.call());
+            const decimals = new BigNumber(await zrx.decimals());
             const expectedDecimals = 18;
             expect(decimals).to.be.bignumber.equal(expectedDecimals);
         });
 
         it('should have a total supply of 1 billion tokens', async () => {
-            const totalSupply = new BigNumber(await zrx.totalSupply.call());
+            const totalSupply = new BigNumber(await zrx.totalSupply());
             const expectedTotalSupply = 1000000000;
             expect(ZeroEx.toUnitAmount(totalSupply, 18)).to.be.bignumber.equal(expectedTotalSupply);
         });
 
         it('should be named 0x Protocol Token', async () => {
-            const name = await zrx.name.call();
+            const name = await zrx.name();
             const expectedName = '0x Protocol Token';
             expect(name).to.be.equal(expectedName);
         });
 
         it('should have the symbol ZRX', async () => {
-            const symbol = await zrx.symbol.call();
+            const symbol = await zrx.symbol();
             const expectedSymbol = 'ZRX';
             expect(symbol).to.be.equal(expectedSymbol);
         });
@@ -63,7 +73,7 @@ contract('ZRXToken', (accounts: string[]) => {
     describe('constructor', () => {
         it('should initialize owner balance to totalSupply', async () => {
             const ownerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
-            const totalSupply = new BigNumber(await zrx.totalSupply.call());
+            const totalSupply = new BigNumber(await zrx.totalSupply());
             expect(totalSupply).to.be.bignumber.equal(ownerBalance);
         });
     });
@@ -73,8 +83,7 @@ contract('ZRXToken', (accounts: string[]) => {
             const receiver = spender;
             const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const amountToTransfer = new BigNumber(1);
-            const txHash = await zeroEx.token.transferAsync(zrxAddress, owner, receiver, amountToTransfer);
-            await zeroEx.awaitTransactionMinedAsync(txHash);
+            await zeroEx.token.transferAsync(zrxAddress, owner, receiver, amountToTransfer);
             const finalOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const finalReceiverBalance = await zeroEx.token.getBalanceAsync(zrxAddress, receiver);
 
@@ -96,10 +105,9 @@ contract('ZRXToken', (accounts: string[]) => {
         it('should return false if owner has insufficient balance', async () => {
             const ownerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const amountToTransfer = ownerBalance.plus(1);
-            const txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer, {
+            await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer, {
                 gasLimit: constants.MAX_TOKEN_APPROVE_GAS,
             });
-            await zeroEx.awaitTransactionMinedAsync(txHash);
             const didReturnTrue = await zrx.transferFrom.call(owner, spender, amountToTransfer, { from: spender });
             expect(didReturnTrue).to.be.false();
         });
@@ -126,14 +134,12 @@ contract('ZRXToken', (accounts: string[]) => {
             const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const amountToTransfer = initOwnerBalance;
             const initSpenderAllowance = MAX_UINT;
-            let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance, {
+            await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance, {
                 gasLimit: constants.MAX_TOKEN_APPROVE_GAS,
             });
-            await zeroEx.awaitTransactionMinedAsync(txHash);
-            txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
+            await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
                 gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
             });
-            await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
             expect(initSpenderAllowance).to.be.bignumber.equal(newSpenderAllowance);
@@ -144,12 +150,10 @@ contract('ZRXToken', (accounts: string[]) => {
             const initSpenderBalance = await zeroEx.token.getBalanceAsync(zrxAddress, spender);
             const amountToTransfer = initOwnerBalance;
             const initSpenderAllowance = initOwnerBalance;
-            let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance);
-            await zeroEx.awaitTransactionMinedAsync(txHash);
-            txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
+            await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, initSpenderAllowance);
+            await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
                 gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
             });
-            await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const newOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const newSpenderBalance = await zeroEx.token.getBalanceAsync(zrxAddress, spender);
@@ -161,12 +165,10 @@ contract('ZRXToken', (accounts: string[]) => {
         it('should modify allowance if spender has sufficient allowance less than 2^256 - 1', async () => {
             const initOwnerBalance = await zeroEx.token.getBalanceAsync(zrxAddress, owner);
             const amountToTransfer = initOwnerBalance;
-            let txHash = await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer);
-            await zeroEx.awaitTransactionMinedAsync(txHash);
-            txHash = await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
+            await zeroEx.token.setAllowanceAsync(zrxAddress, owner, spender, amountToTransfer);
+            await zeroEx.token.transferFromAsync(zrxAddress, owner, spender, spender, amountToTransfer, {
                 gasLimit: constants.MAX_TOKEN_TRANSFERFROM_GAS,
             });
-            await zeroEx.awaitTransactionMinedAsync(txHash);
 
             const newSpenderAllowance = await zeroEx.token.getAllowanceAsync(zrxAddress, owner, spender);
             expect(newSpenderAllowance).to.be.bignumber.equal(0);
diff --git a/packages/contracts/truffle.js b/packages/contracts/truffle.js
deleted file mode 100644
index 630f4cf8b..000000000
--- a/packages/contracts/truffle.js
+++ /dev/null
@@ -1,17 +0,0 @@
-module.exports = {
-    networks: {
-        development: {
-            host: "localhost",
-            port: 8545,
-            network_id: "*", // Match any network id
-        },
-        kovan: {
-            host: "localhost",
-            port: 8546,
-            network_id: "42",
-            gas: 4612388,
-        },
-    },
-    test_directory: "lib/test",
-    migrations_directory: "lib/migrations",
-};
diff --git a/packages/contracts/tsconfig.json b/packages/contracts/tsconfig.json
index 38008a542..0c1b3bc16 100644
--- a/packages/contracts/tsconfig.json
+++ b/packages/contracts/tsconfig.json
@@ -4,8 +4,6 @@
         "outDir": "lib",
         "baseUrl": ".",
         "declaration": false,
-        "strictNullChecks": false,
-        "strictFunctionTypes": false,
         "allowJs": true
     },
     "include": [
diff --git a/packages/contracts/util/artifacts.ts b/packages/contracts/util/artifacts.ts
index ecb18cbce..145b1db3b 100644
--- a/packages/contracts/util/artifacts.ts
+++ b/packages/contracts/util/artifacts.ts
@@ -1,28 +1,27 @@
-export class Artifacts {
-    public Migrations: any;
-    public TokenTransferProxy: any;
-    public TokenRegistry: any;
-    public MultiSigWalletWithTimeLock: any;
-    public Exchange: any;
-    public ZRXToken: any;
-    public DummyToken: any;
-    public DummyTokenV2: any;
-    public EtherToken: any;
-    public MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress: any;
-    public MaliciousToken: any;
-    constructor(artifacts: any) {
-        this.Migrations = artifacts.require('Migrations');
-        this.TokenTransferProxy = artifacts.require('TokenTransferProxy');
-        this.TokenRegistry = artifacts.require('TokenRegistry');
-        this.MultiSigWalletWithTimeLock = artifacts.require('MultiSigWalletWithTimeLock');
-        this.Exchange = artifacts.require('Exchange');
-        this.ZRXToken = artifacts.require('ZRXToken');
-        this.DummyToken = artifacts.require('DummyToken');
-        this.DummyTokenV2 = artifacts.require('DummyToken_v2');
-        this.EtherToken = artifacts.require('WETH9');
-        this.MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress = artifacts.require(
-            'MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress',
-        );
-        this.MaliciousToken = artifacts.require('MaliciousToken');
-    }
-}
+import * as DummyTokenArtifact from '../build/artifacts/DummyToken.json';
+import * as DummyTokenV2Artifact from '../build/artifacts/DummyToken_v2.json';
+import * as ExchangeArtifact from '../build/artifacts/Exchange.json';
+import * as MaliciousTokenArtifact from '../build/artifacts/MaliciousToken.json';
+import * as MultiSigWalletWithTimeLockArtifact from '../build/artifacts/MultiSigWalletWithTimeLock.json';
+import * as MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddressArtifact from '../build/artifacts/MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress.json';
+import * as TokenArtifact from '../build/artifacts/Token.json';
+import * as TokenRegistryArtifact from '../build/artifacts/TokenRegistry.json';
+import * as TokenTransferProxyArtifact from '../build/artifacts/TokenTransferProxy.json';
+import * as EtherTokenArtifact from '../build/artifacts/WETH9.json';
+import * as ZRXArtifact from '../build/artifacts/ZRXToken.json';
+
+import { Artifact } from './types';
+
+export const artifacts = {
+    ZRXArtifact: (ZRXArtifact as any) as Artifact,
+    DummyTokenArtifact: (DummyTokenArtifact as any) as Artifact,
+    DummyTokenV2Artifact: (DummyTokenV2Artifact as any) as Artifact,
+    TokenArtifact: (TokenArtifact as any) as Artifact,
+    ExchangeArtifact: (ExchangeArtifact as any) as Artifact,
+    EtherTokenArtifact: (EtherTokenArtifact as any) as Artifact,
+    TokenRegistryArtifact: (TokenRegistryArtifact as any) as Artifact,
+    MaliciousTokenArtifact: (MaliciousTokenArtifact as any) as Artifact,
+    TokenTransferProxyArtifact: (TokenTransferProxyArtifact as any) as Artifact,
+    MultiSigWalletWithTimeLockArtifact: (MultiSigWalletWithTimeLockArtifact as any) as Artifact,
+    MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddressArtifact: (MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddressArtifact as any) as Artifact,
+};
diff --git a/packages/contracts/util/balances.ts b/packages/contracts/util/balances.ts
index 6a1659ab1..5bcb5145f 100644
--- a/packages/contracts/util/balances.ts
+++ b/packages/contracts/util/balances.ts
@@ -1,12 +1,13 @@
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
+import * as Web3 from 'web3';
 
-import { BalancesByOwner, ContractInstance } from './types';
+import { BalancesByOwner } from './types';
 
 export class Balances {
-    private _tokenContractInstances: ContractInstance[];
+    private _tokenContractInstances: Web3.ContractInstance[];
     private _ownerAddresses: string[];
-    constructor(tokenContractInstances: ContractInstance[], ownerAddresses: string[]) {
+    constructor(tokenContractInstances: Web3.ContractInstance[], ownerAddresses: string[]) {
         this._tokenContractInstances = tokenContractInstances;
         this._ownerAddresses = ownerAddresses;
     }
diff --git a/packages/contracts/util/exchange_wrapper.ts b/packages/contracts/util/exchange_wrapper.ts
index ca79f92c4..7a07239f5 100644
--- a/packages/contracts/util/exchange_wrapper.ts
+++ b/packages/contracts/util/exchange_wrapper.ts
@@ -1,14 +1,17 @@
+import { TransactionReceiptWithDecodedLogs, ZeroEx } from '0x.js';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
+import * as Web3 from 'web3';
 
 import { formatters } from './formatters';
 import { Order } from './order';
-import { ContractInstance } from './types';
 
 export class ExchangeWrapper {
-    private _exchange: ContractInstance;
-    constructor(exchangeContractInstance: ContractInstance) {
+    private _exchange: Web3.ContractInstance;
+    private _zeroEx: ZeroEx;
+    constructor(exchangeContractInstance: Web3.ContractInstance, zeroEx: ZeroEx) {
         this._exchange = exchangeContractInstance;
+        this._zeroEx = zeroEx;
     }
     public async fillOrderAsync(
         order: Order,
@@ -17,10 +20,10 @@ export class ExchangeWrapper {
             fillTakerTokenAmount?: BigNumber;
             shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
         } = {},
-    ) {
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
         const params = order.createFill(shouldThrowOnInsufficientBalanceOrAllowance, opts.fillTakerTokenAmount);
-        const tx = await this._exchange.fillOrder(
+        const txHash = await this._exchange.fillOrder(
             params.orderAddresses,
             params.orderValues,
             params.fillTakerTokenAmount,
@@ -30,24 +33,36 @@ export class ExchangeWrapper {
             params.s,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
-    public async cancelOrderAsync(order: Order, from: string, opts: { cancelTakerTokenAmount?: BigNumber } = {}) {
+    public async cancelOrderAsync(
+        order: Order,
+        from: string,
+        opts: { cancelTakerTokenAmount?: BigNumber } = {},
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const params = order.createCancel(opts.cancelTakerTokenAmount);
-        const tx = await this._exchange.cancelOrder(
+        const txHash = await this._exchange.cancelOrder(
             params.orderAddresses,
             params.orderValues,
             params.cancelTakerTokenAmount,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
-    public async fillOrKillOrderAsync(order: Order, from: string, opts: { fillTakerTokenAmount?: BigNumber } = {}) {
+    public async fillOrKillOrderAsync(
+        order: Order,
+        from: string,
+        opts: { fillTakerTokenAmount?: BigNumber } = {},
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const shouldThrowOnInsufficientBalanceOrAllowance = true;
         const params = order.createFill(shouldThrowOnInsufficientBalanceOrAllowance, opts.fillTakerTokenAmount);
-        const tx = await this._exchange.fillOrKillOrder(
+        const txHash = await this._exchange.fillOrKillOrder(
             params.orderAddresses,
             params.orderValues,
             params.fillTakerTokenAmount,
@@ -56,6 +71,8 @@ export class ExchangeWrapper {
             params.s,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
@@ -66,14 +83,14 @@ export class ExchangeWrapper {
             fillTakerTokenAmounts?: BigNumber[];
             shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
         } = {},
-    ) {
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
         const params = formatters.createBatchFill(
             orders,
             shouldThrowOnInsufficientBalanceOrAllowance,
             opts.fillTakerTokenAmounts,
         );
-        const tx = await this._exchange.batchFillOrders(
+        const txHash = await this._exchange.batchFillOrders(
             params.orderAddresses,
             params.orderValues,
             params.fillTakerTokenAmounts,
@@ -83,16 +100,23 @@ export class ExchangeWrapper {
             params.s,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
     public async batchFillOrKillOrdersAsync(
         orders: Order[],
         from: string,
-        opts: { fillTakerTokenAmounts?: BigNumber[] } = {},
-    ) {
-        const params = formatters.createBatchFill(orders, undefined, opts.fillTakerTokenAmounts);
-        const tx = await this._exchange.batchFillOrKillOrders(
+        opts: { fillTakerTokenAmounts?: BigNumber[]; shouldThrowOnInsufficientBalanceOrAllowance?: boolean } = {},
+    ): Promise<TransactionReceiptWithDecodedLogs> {
+        const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
+        const params = formatters.createBatchFill(
+            orders,
+            shouldThrowOnInsufficientBalanceOrAllowance,
+            opts.fillTakerTokenAmounts,
+        );
+        const txHash = await this._exchange.batchFillOrKillOrders(
             params.orderAddresses,
             params.orderValues,
             params.fillTakerTokenAmounts,
@@ -101,24 +125,23 @@ export class ExchangeWrapper {
             params.s,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
     public async fillOrdersUpToAsync(
         orders: Order[],
         from: string,
-        opts: {
-            fillTakerTokenAmount?: BigNumber;
-            shouldThrowOnInsufficientBalanceOrAllowance?: boolean;
-        } = {},
-    ) {
+        opts: { fillTakerTokenAmount: BigNumber; shouldThrowOnInsufficientBalanceOrAllowance?: boolean },
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const shouldThrowOnInsufficientBalanceOrAllowance = !!opts.shouldThrowOnInsufficientBalanceOrAllowance;
         const params = formatters.createFillUpTo(
             orders,
             shouldThrowOnInsufficientBalanceOrAllowance,
             opts.fillTakerTokenAmount,
         );
-        const tx = await this._exchange.fillOrdersUpTo(
+        const txHash = await this._exchange.fillOrdersUpTo(
             params.orderAddresses,
             params.orderValues,
             params.fillTakerTokenAmount,
@@ -128,6 +151,8 @@ export class ExchangeWrapper {
             params.s,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
@@ -135,14 +160,16 @@ export class ExchangeWrapper {
         orders: Order[],
         from: string,
         opts: { cancelTakerTokenAmounts?: BigNumber[] } = {},
-    ) {
+    ): Promise<TransactionReceiptWithDecodedLogs> {
         const params = formatters.createBatchCancel(orders, opts.cancelTakerTokenAmounts);
-        const tx = await this._exchange.batchCancelOrders(
+        const txHash = await this._exchange.batchCancelOrders(
             params.orderAddresses,
             params.orderValues,
             params.cancelTakerTokenAmounts,
             { from },
         );
+        const tx = await this._zeroEx.awaitTransactionMinedAsync(txHash);
+        tx.logs = _.filter(tx.logs, log => log.address === this._exchange.address);
         _.each(tx.logs, log => wrapLogBigNumbers(log));
         return tx;
     }
diff --git a/packages/contracts/util/formatters.ts b/packages/contracts/util/formatters.ts
index 0d0ef6df4..e16fe8d45 100644
--- a/packages/contracts/util/formatters.ts
+++ b/packages/contracts/util/formatters.ts
@@ -35,9 +35,9 @@ export const formatters = {
                 order.params.expirationTimestampInSec,
                 order.params.salt,
             ]);
-            batchFill.v.push(order.params.v);
-            batchFill.r.push(order.params.r);
-            batchFill.s.push(order.params.s);
+            batchFill.v.push(order.params.v as number);
+            batchFill.r.push(order.params.r as string);
+            batchFill.s.push(order.params.s as string);
             if (fillTakerTokenAmounts.length < orders.length) {
                 batchFill.fillTakerTokenAmounts.push(order.params.takerTokenAmount);
             }
@@ -74,9 +74,9 @@ export const formatters = {
                 order.params.expirationTimestampInSec,
                 order.params.salt,
             ]);
-            fillUpTo.v.push(order.params.v);
-            fillUpTo.r.push(order.params.r);
-            fillUpTo.s.push(order.params.s);
+            fillUpTo.v.push(order.params.v as number);
+            fillUpTo.r.push(order.params.r as string);
+            fillUpTo.s.push(order.params.s as string);
         });
         return fillUpTo;
     },
diff --git a/packages/contracts/util/multi_sig_wrapper.ts b/packages/contracts/util/multi_sig_wrapper.ts
index 0e2e671ec..0a066df53 100644
--- a/packages/contracts/util/multi_sig_wrapper.ts
+++ b/packages/contracts/util/multi_sig_wrapper.ts
@@ -3,10 +3,10 @@ import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 
-import { ContractInstance, TransactionDataParams } from './types';
+import { TransactionDataParams } from './types';
 
 export class MultiSigWrapper {
-    private _multiSig: ContractInstance;
+    private _multiSig: Web3.ContractInstance;
     public static encodeFnArgs(name: string, abi: Web3.AbiDefinition[], args: any[]) {
         const abiEntity = _.find(abi, { name }) as Web3.MethodAbi;
         if (_.isUndefined(abiEntity)) {
@@ -21,7 +21,7 @@ export class MultiSigWrapper {
         });
         return funcSig + argsData.join('');
     }
-    constructor(multiSigContractInstance: ContractInstance) {
+    constructor(multiSigContractInstance: Web3.ContractInstance) {
         this._multiSig = multiSigContractInstance;
     }
     public async submitTransactionAsync(
diff --git a/packages/contracts/util/order.ts b/packages/contracts/util/order.ts
index e202d485b..57bb2bcbf 100644
--- a/packages/contracts/util/order.ts
+++ b/packages/contracts/util/order.ts
@@ -1,19 +1,17 @@
-import { BigNumber, promisify } from '@0xproject/utils';
+import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
-import Web3 = require('web3');
 
 import { crypto } from './crypto';
 import { OrderParams } from './types';
 
-// In order to benefit from type-safety, we re-assign the global web3 instance injected by Truffle
-// with type `any` to a variable of type `Web3`.
-const web3: Web3 = (global as any).web3;
-
 export class Order {
     public params: OrderParams;
-    constructor(params: OrderParams) {
+    private _web3Wrapper: Web3Wrapper;
+    constructor(web3Wrapper: Web3Wrapper, params: OrderParams) {
         this.params = params;
+        this._web3Wrapper = web3Wrapper;
     }
     public isValidSignature() {
         const { v, r, s } = this.params;
@@ -32,7 +30,7 @@ export class Order {
     }
     public async signAsync() {
         const orderHash = this._getOrderHash();
-        const signature = await promisify<string>(web3.eth.sign)(this.params.maker, orderHash);
+        const signature = await this._web3Wrapper.signTransactionAsync(this.params.maker, orderHash);
         const { v, r, s } = ethUtil.fromRpcSig(signature);
         this.params = _.assign(this.params, {
             orderHashHex: orderHash,
diff --git a/packages/contracts/util/order_factory.ts b/packages/contracts/util/order_factory.ts
index a45877de0..2b50f13e8 100644
--- a/packages/contracts/util/order_factory.ts
+++ b/packages/contracts/util/order_factory.ts
@@ -1,5 +1,6 @@
 import { ZeroEx } from '0x.js';
 import { BigNumber } from '@0xproject/utils';
+import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as _ from 'lodash';
 
 import { Order } from './order';
@@ -7,10 +8,12 @@ import { DefaultOrderParams, OptionalOrderParams, OrderParams } from './types';
 
 export class OrderFactory {
     private _defaultOrderParams: DefaultOrderParams;
-    constructor(defaultOrderParams: DefaultOrderParams) {
+    private _web3Wrapper: Web3Wrapper;
+    constructor(web3Wrapper: Web3Wrapper, defaultOrderParams: DefaultOrderParams) {
         this._defaultOrderParams = defaultOrderParams;
+        this._web3Wrapper = web3Wrapper;
     }
-    public async newSignedOrderAsync(customOrderParams: OptionalOrderParams = {}) {
+    public async newSignedOrderAsync(customOrderParams: OptionalOrderParams = {}): Promise<Order> {
         const randomExpiration = new BigNumber(Math.floor((Date.now() + Math.random() * 100000000000) / 1000));
         const orderParams: OrderParams = _.assign(
             {},
@@ -22,7 +25,7 @@ export class OrderFactory {
             this._defaultOrderParams,
             customOrderParams,
         );
-        const order = new Order(orderParams);
+        const order = new Order(this._web3Wrapper, orderParams);
         await order.signAsync();
         return order;
     }
diff --git a/packages/contracts/util/token_registry_wrapper.ts b/packages/contracts/util/token_registry_wrapper.ts
index 07a577dea..033b72d10 100644
--- a/packages/contracts/util/token_registry_wrapper.ts
+++ b/packages/contracts/util/token_registry_wrapper.ts
@@ -1,8 +1,10 @@
-import { ContractInstance, Token } from './types';
+import * as Web3 from 'web3';
+
+import { Token } from './types';
 
 export class TokenRegWrapper {
-    private _tokenReg: ContractInstance;
-    constructor(tokenRegContractInstance: ContractInstance) {
+    private _tokenReg: Web3.ContractInstance;
+    constructor(tokenRegContractInstance: Web3.ContractInstance) {
         this._tokenReg = tokenRegContractInstance;
     }
     public addTokenAsync(token: Token, from: string) {
diff --git a/packages/contracts/util/types.ts b/packages/contracts/util/types.ts
index e511ca9f4..0db04cd76 100644
--- a/packages/contracts/util/types.ts
+++ b/packages/contracts/util/types.ts
@@ -7,6 +7,10 @@ export interface BalancesByOwner {
     };
 }
 
+export interface SubmissionContractEventArgs {
+    transactionId: BigNumber;
+}
+
 export interface BatchFillOrders {
     orderAddresses: string[][];
     orderValues: BigNumber[][];
@@ -108,12 +112,38 @@ export interface TokenInfoByNetwork {
     live: Token[];
 }
 
-// Named type aliases to improve readability
-export type ContractInstance = any;
-
 export enum ExchangeContractErrs {
     ERROR_ORDER_EXPIRED,
     ERROR_ORDER_FULLY_FILLED_OR_CANCELLED,
     ERROR_ROUNDING_ERROR_TOO_LARGE,
     ERROR_INSUFFICIENT_BALANCE_OR_ALLOWANCE,
 }
+
+export enum ContractName {
+    TokenTransferProxy = 'TokenTransferProxy',
+    TokenRegistry = 'TokenRegistry',
+    MultiSigWalletWithTimeLock = 'MultiSigWalletWithTimeLock',
+    Exchange = 'Exchange',
+    ZRXToken = 'ZRXToken',
+    DummyToken = 'DummyToken',
+    DummyToken_v2 = 'DummyToken_v2',
+    EtherToken = 'WETH9',
+    MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress = 'MultiSigWalletWithTimeLockExceptRemoveAuthorizedAddress',
+    MaliciousToken = 'MaliciousToken',
+}
+
+export interface Artifact {
+    contract_name: ContractName;
+    networks: {
+        [networkId: number]: {
+            abi: Web3.ContractAbi;
+            solc_version: string;
+            keccak256: string;
+            optimizer_enabled: number;
+            unlinked_binary: string;
+            updated_at: number;
+            address: string;
+            constructor_args: string;
+        };
+    };
+}
diff --git a/packages/deployer/package.json b/packages/deployer/package.json
index 723c4a465..8bff8445c 100644
--- a/packages/deployer/package.json
+++ b/packages/deployer/package.json
@@ -2,7 +2,8 @@
     "name": "@0xproject/deployer",
     "version": "0.0.4",
     "description": "Smart contract deployer of 0x protocol",
-    "main": "lib/src/cli.js",
+    "main": "lib/src/index.js",
+    "types": "lib/src/index.d.ts",
     "scripts": {
         "build": "yarn clean && copyfiles 'test/fixtures/contracts/**/*' src/solc/solc_bin/* ./lib && tsc",
         "test": "npm run build; mocha lib/test/*_test.js",
@@ -27,12 +28,13 @@
     "homepage": "https://github.com/0xProject/0x.js/packages/deployer/README.md",
     "devDependencies": {
         "copyfiles": "^1.2.0",
+        "web3-typescript-typings": "^0.9.4",
         "types-bn": "^0.0.1",
         "typescript": "~2.6.1",
         "web3-typescript-typings": "^0.9.7"
     },
     "dependencies": {
-        "@0xproject/utils": "^0.1.3",
+        "@0xproject/utils": "^0.2.1",
         "@0xproject/web3-wrapper": "^0.1.8",
         "lodash": "^4.17.4",
         "solc": "^0.4.18",
diff --git a/packages/deployer/src/index.ts b/packages/deployer/src/index.ts
new file mode 100644
index 000000000..06dc9e596
--- /dev/null
+++ b/packages/deployer/src/index.ts
@@ -0,0 +1 @@
+export { Deployer } from './deployer';
diff --git a/packages/deployer/src/utils/contract.ts b/packages/deployer/src/utils/contract.ts
index 546e82dfb..9c57751ff 100644
--- a/packages/deployer/src/utils/contract.ts
+++ b/packages/deployer/src/utils/contract.ts
@@ -28,16 +28,16 @@ export class Contract implements Web3.ContractInstance {
         _.forEach(functionsAbi, (functionAbi: Web3.MethodAbi) => {
             if (functionAbi.constant) {
                 const cbStyleCallFunction = this._contract[functionAbi.name].call;
-                this[functionAbi.name] = {
-                    callAsync: promisify(cbStyleCallFunction, this._contract),
-                };
+                this[functionAbi.name] = promisify(cbStyleCallFunction, this._contract);
+                this[functionAbi.name].call = promisify(cbStyleCallFunction, this._contract);
             } else {
                 const cbStyleFunction = this._contract[functionAbi.name];
+                const cbStyleCallFunction = this._contract[functionAbi.name].call;
                 const cbStyleEstimateGasFunction = this._contract[functionAbi.name].estimateGas;
-                this[functionAbi.name] = {
-                    estimateGasAsync: promisify(cbStyleEstimateGasFunction, this._contract),
-                    sendTransactionAsync: this._promisifyWithDefaultParams(cbStyleFunction),
-                };
+                this[functionAbi.name] = this._promisifyWithDefaultParams(cbStyleFunction);
+                this[functionAbi.name].estimateGasAsync = promisify(cbStyleEstimateGasFunction);
+                this[functionAbi.name].sendTransactionAsync = this._promisifyWithDefaultParams(cbStyleFunction);
+                this[functionAbi.name].call = promisify(cbStyleCallFunction, this._contract);
             }
         });
     }
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index bd77b7c20..ec0872a46 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -21,17 +21,20 @@
     "devDependencies": {
         "@0xproject/tslint-config": "^0.4.5",
         "@types/lodash": "^4.14.86",
+        "@0xproject/types": "^0.1.5",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
         "types-bn": "^0.0.1",
-        "types-ethereumjs-util": "0xProject/types-ethereumjs-util",
+        "types-ethereumjs-util": "0xproject/types-ethereumjs-util",
         "typescript": "~2.6.1"
     },
     "dependencies": {
         "@0xproject/utils": "^0.2.3",
         "ethereumjs-util": "^5.1.2",
         "lodash": "^4.17.4",
-        "request-promise-native": "^1.0.5"
+        "request-promise-native": "^1.0.5",
+        "web3": "^0.20.0",
+        "web3-provider-engine": "^13.0.1"
     }
 }
diff --git a/packages/dev-utils/src/blockchain_lifecycle.ts b/packages/dev-utils/src/blockchain_lifecycle.ts
index 18f5d5c61..c46902f76 100644
--- a/packages/dev-utils/src/blockchain_lifecycle.ts
+++ b/packages/dev-utils/src/blockchain_lifecycle.ts
@@ -3,8 +3,8 @@ import { RPC } from './rpc';
 export class BlockchainLifecycle {
     private _rpc: RPC;
     private _snapshotIdsStack: number[];
-    constructor(url: string) {
-        this._rpc = new RPC(url);
+    constructor() {
+        this._rpc = new RPC();
         this._snapshotIdsStack = [];
     }
     // TODO: In order to run these tests on an actual node, we should check if we are running against
diff --git a/packages/dev-utils/src/constants.ts b/packages/dev-utils/src/constants.ts
new file mode 100644
index 000000000..4f7b4202a
--- /dev/null
+++ b/packages/dev-utils/src/constants.ts
@@ -0,0 +1,5 @@
+export const constants = {
+    RPC_URL: 'http://localhost:8545',
+    RPC_PORT: 8545,
+    GAS_ESTIMATE: 1000000,
+};
diff --git a/packages/dev-utils/src/globals.d.ts b/packages/dev-utils/src/globals.d.ts
new file mode 100644
index 000000000..7b132ee28
--- /dev/null
+++ b/packages/dev-utils/src/globals.d.ts
@@ -0,0 +1,2 @@
+declare module 'web3-provider-engine';
+declare module 'web3-provider-engine/subproviders/rpc';
diff --git a/packages/dev-utils/src/index.ts b/packages/dev-utils/src/index.ts
index 9ba0cb5cf..e899ac206 100644
--- a/packages/dev-utils/src/index.ts
+++ b/packages/dev-utils/src/index.ts
@@ -1,2 +1,4 @@
 export { RPC } from './rpc';
 export { BlockchainLifecycle } from './blockchain_lifecycle';
+export { web3Factory } from './web3_factory';
+export { constants as devConstants } from './constants';
diff --git a/packages/dev-utils/src/rpc.ts b/packages/dev-utils/src/rpc.ts
index 36f8b1ef9..47a359263 100644
--- a/packages/dev-utils/src/rpc.ts
+++ b/packages/dev-utils/src/rpc.ts
@@ -1,11 +1,13 @@
 import * as ethUtil from 'ethereumjs-util';
 import * as request from 'request-promise-native';
 
+import { constants } from './constants';
+
 export class RPC {
     private _url: string;
     private _id: number;
-    constructor(url: string) {
-        this._url = url;
+    constructor() {
+        this._url = constants.RPC_URL;
         this._id = 0;
     }
     public async takeSnapshotAsync(): Promise<number> {
diff --git a/packages/0x.js/test/utils/subproviders/empty_wallet_subprovider.ts b/packages/dev-utils/src/subproviders/empty_wallet_subprovider.ts
index 53f2be83d..8c1fdfdb2 100644
--- a/packages/0x.js/test/utils/subproviders/empty_wallet_subprovider.ts
+++ b/packages/dev-utils/src/subproviders/empty_wallet_subprovider.ts
@@ -1,4 +1,4 @@
-import { JSONRPCPayload } from '../../../src/types';
+import { JSONRPCPayload } from '@0xproject/types';
 
 /*
  * This class implements the web3-provider-engine subprovider interface and returns
diff --git a/packages/0x.js/test/utils/subproviders/fake_gas_estimate_subprovider.ts b/packages/dev-utils/src/subproviders/fake_gas_estimate_subprovider.ts
index e1113a851..b455a0ed7 100644
--- a/packages/0x.js/test/utils/subproviders/fake_gas_estimate_subprovider.ts
+++ b/packages/dev-utils/src/subproviders/fake_gas_estimate_subprovider.ts
@@ -1,4 +1,4 @@
-import { JSONRPCPayload } from '../../../src/types';
+import { JSONRPCPayload } from '@0xproject/types';
 
 /*
  * This class implements the web3-provider-engine subprovider interface and returns
diff --git a/packages/0x.js/test/utils/web3_factory.ts b/packages/dev-utils/src/web3_factory.ts
index 26c26e03d..26c26e03d 100644
--- a/packages/0x.js/test/utils/web3_factory.ts
+++ b/packages/dev-utils/src/web3_factory.ts
diff --git a/packages/dev-utils/tsconfig.json b/packages/dev-utils/tsconfig.json
index b28e45170..bdf315d59 100644
--- a/packages/dev-utils/tsconfig.json
+++ b/packages/dev-utils/tsconfig.json
@@ -6,6 +6,7 @@
     "include": [
         "./src/**/*",
         "../../node_modules/types-bn/index.d.ts",
+        "../../node_modules/web3-typescript-typings/index.d.ts",
         "../../node_modules/types-ethereumjs-util/index.d.ts"
     ]
 }
diff --git a/packages/json-schemas/tsconfig.json b/packages/json-schemas/tsconfig.json
index 88a467ccb..10354fa33 100644
--- a/packages/json-schemas/tsconfig.json
+++ b/packages/json-schemas/tsconfig.json
@@ -3,5 +3,10 @@
     "compilerOptions": {
         "outDir": "lib"
     },
-    "include": ["./src/**/*", "./test/**/*", "../../node_modules/chai-typescript-typings/index.d.ts"]
+    "include": [
+        "./src/**/*",
+        "./test/**/*",
+        "../../node_modules/web3-typescript-typings/index.d.ts",
+        "../../node_modules/chai-typescript-typings/index.d.ts"
+    ]
 }
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index 251b63e19..9381689b1 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -49,7 +49,7 @@
         "types-bn": "^0.0.1",
         "types-ethereumjs-util": "0xproject/types-ethereumjs-util",
         "typescript": "~2.6.1",
-        "web3-typescript-typings": "^0.7.2",
+        "web3-typescript-typings": "^0.9.5",
         "webpack": "^3.1.0"
     }
 }
diff --git a/packages/tslint-config/package.json b/packages/tslint-config/package.json
index 3b616ba3a..f4497ff5d 100644
--- a/packages/tslint-config/package.json
+++ b/packages/tslint-config/package.json
@@ -8,22 +8,12 @@
         "clean": "shx rm -rf lib",
         "lint": "tslint --project . 'rules/**/*.ts'"
     },
-    "files": [
-        "tslint.js",
-        "README.md",
-        "LICENSE"
-    ],
+    "files": ["tslint.js", "README.md", "LICENSE"],
     "repository": {
         "type": "git",
         "url": "git://github.com/0xProject/0x.js.git"
     },
-    "keywords": [
-        "tslint",
-        "config",
-        "0xProject",
-        "typescript",
-        "ts"
-    ],
+    "keywords": ["tslint", "config", "0xProject", "typescript", "ts"],
     "author": {
         "name": "Fabio Berger",
         "email": "fabio@0xproject.com"
diff --git a/packages/tslint-config/tslint.json b/packages/tslint-config/tslint.json
index 971588b08..44a8517dc 100644
--- a/packages/tslint-config/tslint.json
+++ b/packages/tslint-config/tslint.json
@@ -44,7 +44,6 @@
         "no-string-throw": true,
         "no-submodule-imports": false,
         "no-unnecessary-type-assertion": true,
-        "no-unused-variable": [true, { "ignore-pattern": "^_\\d*" }],
         "no-implicit-dependencies": [true, "dev"],
         "number-literal-format": true,
         "object-literal-sort-keys": false,
diff --git a/packages/types/package.json b/packages/types/package.json
index 0c17e52ea..1abcf79ad 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -22,10 +22,11 @@
         "@0xproject/tslint-config": "^0.4.5",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
+        "web3-typescript-typings": "^0.9.5",
         "typescript": "~2.6.1"
     },
     "dependencies": {
-        "@0xproject/utils": "^0.2.3",
+        "bignumber.js": "~4.1.0",
         "web3": "^0.20.0"
     }
 }
diff --git a/packages/types/src/index.ts b/packages/types/src/index.ts
index 9cf9bc7af..7b53b52c4 100644
--- a/packages/types/src/index.ts
+++ b/packages/types/src/index.ts
@@ -1,4 +1,4 @@
-import { BigNumber } from '@0xproject/utils';
+import { BigNumber } from 'bignumber.js';
 import * as Web3 from 'web3';
 
 export interface TxData {
@@ -25,3 +25,34 @@ export interface TransactionReceipt {
     contractAddress: string | null;
     logs: Web3.LogEntry[];
 }
+
+export interface JSONRPCPayload {
+    params: any[];
+    method: string;
+}
+
+export enum AbiType {
+    Function = 'function',
+    Constructor = 'constructor',
+    Event = 'event',
+    Fallback = 'fallback',
+}
+
+export type ContractEventArg = string | BigNumber;
+
+export interface DecodedLogArgs {
+    [argName: string]: ContractEventArg;
+}
+
+export interface LogWithDecodedArgs<ArgsType> extends Web3.DecodedLogEntry<ArgsType> {}
+export type RawLog = Web3.LogEntry;
+export enum SolidityTypes {
+    Address = 'address',
+    Uint256 = 'uint256',
+    Uint8 = 'uint8',
+    Uint = 'uint',
+}
+
+export interface TransactionReceiptWithDecodedLogs extends TransactionReceipt {
+    logs: Array<LogWithDecodedArgs<DecodedLogArgs> | Web3.LogEntry>;
+}
diff --git a/packages/utils/package.json b/packages/utils/package.json
index a1cf4c24a..db82f8040 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -20,15 +20,18 @@
     "homepage": "https://github.com/0xProject/0x.js/packages/utils/README.md",
     "devDependencies": {
         "@0xproject/tslint-config": "^0.4.5",
+        "@0xproject/types": "^0.1.5",
         "@types/lodash": "^4.14.86",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
+        "web3-typescript-typings": "^0.9.5",
         "typescript": "~2.6.1"
     },
     "dependencies": {
         "bignumber.js": "~4.1.0",
         "js-sha3": "^0.7.0",
-        "lodash": "^4.17.4"
+        "lodash": "^4.17.4",
+        "web3": "^0.20.0"
     }
 }
diff --git a/packages/0x.js/src/utils/abi_decoder.ts b/packages/utils/src/abi_decoder.ts
index bbd2a0b1d..f96ee2edb 100644
--- a/packages/0x.js/src/utils/abi_decoder.ts
+++ b/packages/utils/src/abi_decoder.ts
@@ -1,9 +1,9 @@
-import { BigNumber } from '@0xproject/utils';
+import { AbiType, DecodedLogArgs, LogWithDecodedArgs, RawLog, SolidityTypes } from '@0xproject/types';
 import * as _ from 'lodash';
 import * as Web3 from 'web3';
 import * as SolidityCoder from 'web3/lib/solidity/coder';
 
-import { AbiType, ContractEventArgs, DecodedLogArgs, LogWithDecodedArgs, RawLog, SolidityTypes } from '../types';
+import { BigNumber } from './configured_bignumber';
 
 export class AbiDecoder {
     private _savedABIs: Web3.AbiDefinition[] = [];
@@ -21,9 +21,7 @@ export class AbiDecoder {
         _.map(abiArrays, this._addABI.bind(this));
     }
     // This method can only decode logs from the 0x & ERC20 smart contracts
-    public tryToDecodeLogOrNoop<ArgsType extends ContractEventArgs>(
-        log: Web3.LogEntry,
-    ): LogWithDecodedArgs<ArgsType> | RawLog {
+    public tryToDecodeLogOrNoop<ArgsType>(log: Web3.LogEntry): LogWithDecodedArgs<ArgsType> | RawLog {
         const methodId = log.topics[0];
         const event = this._methodIds[methodId];
         if (_.isUndefined(event)) {
@@ -40,7 +38,7 @@ export class AbiDecoder {
 
         _.map(event.inputs, (param: Web3.EventParameter) => {
             // Indexed parameters are stored in topics. Non-indexed ones in decodedData
-            let value = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++];
+            let value: BigNumber | string = param.indexed ? log.topics[topicsIndex++] : decodedData[dataIndex++];
             if (param.type === SolidityTypes.Address) {
                 value = AbiDecoder._padZeros(new BigNumber(value).toString(16));
             } else if (
diff --git a/packages/utils/src/globals.d.ts b/packages/utils/src/globals.d.ts
new file mode 100644
index 000000000..ade9e59db
--- /dev/null
+++ b/packages/utils/src/globals.d.ts
@@ -0,0 +1,3 @@
+declare module 'web3/lib/solidity/coder' {
+    const decodeParams: (types: string[], data: string) => any[];
+}
diff --git a/packages/utils/src/index.ts b/packages/utils/src/index.ts
index 2768e49ab..39dede41f 100644
--- a/packages/utils/src/index.ts
+++ b/packages/utils/src/index.ts
@@ -3,3 +3,4 @@ export { addressUtils } from './address_utils';
 export { classUtils } from './class_utils';
 export { intervalUtils } from './interval_utils';
 export { BigNumber } from './configured_bignumber';
+export { AbiDecoder } from './abi_decoder';
diff --git a/packages/web3-typescript-typings/package.json b/packages/web3-typescript-typings/package.json
index 03d8e333e..4737088b0 100644
--- a/packages/web3-typescript-typings/package.json
+++ b/packages/web3-typescript-typings/package.json
@@ -12,9 +12,7 @@
         "url": "git+https://github.com/0xProject/0x.js.git"
     },
     "author": "Fabio Berger",
-    "contributors": [
-        "Leonid Logvinov <logvinov.leon@gmail.com>"
-    ],
+    "contributors": ["Leonid Logvinov <logvinov.leon@gmail.com>"],
     "license": "Apache-2.0",
     "bugs": {
         "url": "https://github.com/0xProject/0x.js/issues"
@@ -22,7 +20,7 @@
     "homepage": "https://github.com/0xProject/0x.js/packages/web3-typescript-typings#readme",
     "devDependencies": {
         "@types/bignumber.js": "^4.0.2",
-        "tslint": "^5.5.0",
+        "tslint": "5.8.0",
         "tslint-config-0xproject": "^0.0.2",
         "typescript": "~2.6.1"
     },
diff --git a/packages/web3-wrapper/src/index.ts b/packages/web3-wrapper/src/index.ts
index c4826f2be..a2878fc2a 100644
--- a/packages/web3-wrapper/src/index.ts
+++ b/packages/web3-wrapper/src/index.ts
@@ -134,6 +134,10 @@ export class Web3Wrapper {
         const gas = await promisify<number>(this._web3.eth.estimateGas)({ data });
         return gas;
     }
+    public async sendTransactionAsync(txData: Web3.TxData): Promise<string> {
+        const txHash = await promisify<string>(this._web3.eth.sendTransaction)(txData);
+        return txHash;
+    }
     private async _sendRawPayloadAsync<A>(payload: Web3.JSONRPCRequestPayload): Promise<A> {
         const sendAsync = this._web3.currentProvider.sendAsync.bind(this._web3.currentProvider);
         const response = await promisify<Web3.JSONRPCResponsePayload>(sendAsync)(payload);
diff --git a/packages/website/package.json b/packages/website/package.json
index 0acc6429a..a5a9eb00a 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -8,9 +8,12 @@
         "clean": "shx rm -f public/bundle*",
         "lint": "tslint --project . 'ts/**/*.ts' 'ts/**/*.tsx'",
         "dev": "webpack-dev-server --content-base public --https",
-        "update_contracts": "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../website/contracts; done;",
-        "deploy_staging": "npm run build; aws s3 sync ./public/. s3://staging-0xproject --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers",
-        "deploy_live": "npm run build; aws s3 sync ./public/. s3://0xproject.com --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers"
+        "update_contracts":
+            "for i in ${npm_package_config_artifacts}; do copyfiles -u 4 ../contracts/build/contracts/$i.json ../website/contracts; done;",
+        "deploy_staging":
+            "npm run build; aws s3 sync ./public/. s3://staging-0xproject --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers",
+        "deploy_live":
+            "npm run build; aws s3 sync ./public/. s3://0xproject.com --profile 0xproject --region us-east-1 --grants read=uri=http://acs.amazonaws.com/groups/global/AllUsers"
     },
     "config": {
         "artifacts": "Mintable"