Use make-promises-safe to catch unhandled rejections in tests

87 files changed, 126 insertions, 37 deletions

diff --git a/packages/0x.js/package.json b/packages/0x.js/package.json
index a901e2832..7d9107bba 100644
--- a/packages/0x.js/package.json
+++ b/packages/0x.js/package.json
@@ -2,7 +2,7 @@
     "name": "0x.js",
     "version": "0.37.2",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "A javascript library for interacting with the 0x protocol",
     "keywords": [
@@ -67,10 +67,10 @@
     "license": "Apache-2.0",
     "devDependencies": {
         "@0xproject/abi-gen": "^0.2.13",
-        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/dev-utils": "^0.4.1",
         "@0xproject/migrations": "^0.0.5",
         "@0xproject/monorepo-scripts": "^0.1.19",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/tslint-config": "^0.4.17",
         "@types/lodash": "4.14.104",
         "@types/mocha": "^2.2.42",
@@ -83,6 +83,7 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "json-loader": "^0.5.4",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
@@ -100,11 +101,11 @@
         "@0xproject/assert": "^0.2.9",
         "@0xproject/base-contract": "^0.3.1",
         "@0xproject/contract-wrappers": "^0.0.1",
-        "@0xproject/order-watcher": "^0.0.1",
         "@0xproject/order-utils": "^0.0.4",
+        "@0xproject/order-watcher": "^0.0.1",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/types": "^0.6.3",
         "@0xproject/typescript-typings": "^0.3.1",
-        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/utils": "^0.6.1",
         "@0xproject/web3-wrapper": "^0.6.3",
         "ethers": "^3.0.15",
diff --git a/packages/0x.js/test/0x.js_test.ts b/packages/0x.js/test/0x.js_test.ts
index ce2fa34bf..509d3f9f2 100644
--- a/packages/0x.js/test/0x.js_test.ts
+++ b/packages/0x.js/test/0x.js_test.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as path from 'path';
 import * as Sinon from 'sinon';
diff --git a/packages/0x.js/test/artifacts_test.ts b/packages/0x.js/test/artifacts_test.ts
index 40c5983bd..ca554a4f5 100644
--- a/packages/0x.js/test/artifacts_test.ts
+++ b/packages/0x.js/test/artifacts_test.ts
@@ -1,5 +1,6 @@
 import { web3Factory } from '@0xproject/dev-utils';
 import * as fs from 'fs';
+import 'make-promises-safe';
 
 import { ZeroEx } from '../src';
 
diff --git a/packages/abi-gen/package.json b/packages/abi-gen/package.json
index d0cd946f0..ca666dc9b 100644
--- a/packages/abi-gen/package.json
+++ b/packages/abi-gen/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/abi-gen",
     "version": "0.2.13",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Generate contract wrappers from ABI and handlebars templates",
     "main": "lib/index.js",
@@ -47,6 +47,7 @@
         "@types/node": "^8.0.53",
         "@types/yargs": "^10.0.0",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
diff --git a/packages/assert/package.json b/packages/assert/package.json
index c6d77c1bd..e3ac0d3ed 100644
--- a/packages/assert/package.json
+++ b/packages/assert/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/assert",
     "version": "0.2.9",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Provides a standard way of performing type and schema validation across 0x projects",
     "main": "lib/src/index.js",
@@ -38,6 +38,7 @@
         "chai": "^4.0.1",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/assert/test/assert_test.ts b/packages/assert/test/assert_test.ts
index 1d9a34ed9..58d3e53b5 100644
--- a/packages/assert/test/assert_test.ts
+++ b/packages/assert/test/assert_test.ts
@@ -2,6 +2,7 @@ import { schemas } from '@0xproject/json-schemas';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { assert } from '../src/index';
diff --git a/packages/base-contract/package.json b/packages/base-contract/package.json
index 8a048112c..ca59dc4c8 100644
--- a/packages/base-contract/package.json
+++ b/packages/base-contract/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/base-contract",
     "version": "0.3.1",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x Base TS contract",
     "main": "lib/src/index.js",
@@ -34,6 +34,7 @@
         "@types/lodash": "4.14.104",
         "chai": "^4.0.1",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
diff --git a/packages/base-contract/test/utils_test.ts b/packages/base-contract/test/utils_test.ts
index c083704f4..316b0b310 100644
--- a/packages/base-contract/test/utils_test.ts
+++ b/packages/base-contract/test/utils_test.ts
@@ -1,5 +1,6 @@
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { formatABIDataItem } from '../src/utils';
diff --git a/packages/connect/package.json b/packages/connect/package.json
index d52fb450e..65aa50a42 100644
--- a/packages/connect/package.json
+++ b/packages/connect/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/connect",
     "version": "0.6.12",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "A javascript library for interacting with the standard relayer api",
     "keywords": [
@@ -74,6 +74,7 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "fetch-mock": "^5.13.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/connect/test/http_client_test.ts b/packages/connect/test/http_client_test.ts
index 311dc96e6..30028ec41 100644
--- a/packages/connect/test/http_client_test.ts
+++ b/packages/connect/test/http_client_test.ts
@@ -3,6 +3,7 @@ import * as chai from 'chai';
 import * as chaiAsPromised from 'chai-as-promised';
 import * as dirtyChai from 'dirty-chai';
 import * as fetchMock from 'fetch-mock';
+import 'make-promises-safe';
 import 'mocha';
 
 import { HttpClient } from '../src/index';
diff --git a/packages/connect/test/orderbook_channel_message_parsers_test.ts b/packages/connect/test/orderbook_channel_message_parsers_test.ts
index 3e1f44384..630c95da9 100644
--- a/packages/connect/test/orderbook_channel_message_parsers_test.ts
+++ b/packages/connect/test/orderbook_channel_message_parsers_test.ts
@@ -1,5 +1,6 @@
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { orderbookChannelMessageParser } from '../src/utils/orderbook_channel_message_parser';
diff --git a/packages/connect/test/ws_orderbook_channel_test.ts b/packages/connect/test/ws_orderbook_channel_test.ts
index ce404d934..b84629221 100644
--- a/packages/connect/test/ws_orderbook_channel_test.ts
+++ b/packages/connect/test/ws_orderbook_channel_test.ts
@@ -1,6 +1,7 @@
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 
 import { WebSocketOrderbookChannel } from '../src/ws_orderbook_channel';
diff --git a/packages/contract-wrappers/package.json b/packages/contract-wrappers/package.json
index 5042a14e7..6cb16c2c0 100644
--- a/packages/contract-wrappers/package.json
+++ b/packages/contract-wrappers/package.json
@@ -45,10 +45,10 @@
     },
     "devDependencies": {
         "@0xproject/abi-gen": "^0.2.13",
-        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/dev-utils": "^0.4.1",
         "@0xproject/migrations": "^0.0.5",
         "@0xproject/monorepo-scripts": "^0.1.19",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/subproviders": "^0.10.1",
         "@0xproject/tslint-config": "^0.4.17",
         "@types/lodash": "4.14.104",
@@ -62,6 +62,7 @@
         "chai-bignumber": "^2.0.1",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/contract-wrappers/test/artifacts_test.ts b/packages/contract-wrappers/test/artifacts_test.ts
index 5d7261e09..446b8f9d1 100644
--- a/packages/contract-wrappers/test/artifacts_test.ts
+++ b/packages/contract-wrappers/test/artifacts_test.ts
@@ -1,5 +1,6 @@
 import { web3Factory } from '@0xproject/dev-utils';
 import * as fs from 'fs';
+import 'make-promises-safe';
 
 import { ContractWrappers } from '../src';
 
diff --git a/packages/contract-wrappers/test/ether_token_wrapper_test.ts b/packages/contract-wrappers/test/ether_token_wrapper_test.ts
index e9a9705b1..974db34b1 100644
--- a/packages/contract-wrappers/test/ether_token_wrapper_test.ts
+++ b/packages/contract-wrappers/test/ether_token_wrapper_test.ts
@@ -3,6 +3,7 @@ import { DoneCallback } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import {
diff --git a/packages/contract-wrappers/test/exchange_transfer_simulator_test.ts b/packages/contract-wrappers/test/exchange_transfer_simulator_test.ts
index b4ea91181..77c73ba8f 100644
--- a/packages/contract-wrappers/test/exchange_transfer_simulator_test.ts
+++ b/packages/contract-wrappers/test/exchange_transfer_simulator_test.ts
@@ -2,6 +2,7 @@ import { BlockchainLifecycle, devConstants } from '@0xproject/dev-utils';
 import { BlockParamLiteral, Token } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 
 import { ContractWrappers, ExchangeContractErrs } from '../src';
 import { TradeSide, TransferType } from '../src/types';
diff --git a/packages/contract-wrappers/test/exchange_wrapper_test.ts b/packages/contract-wrappers/test/exchange_wrapper_test.ts
index fc0a23485..99384e0fa 100644
--- a/packages/contract-wrappers/test/exchange_wrapper_test.ts
+++ b/packages/contract-wrappers/test/exchange_wrapper_test.ts
@@ -6,6 +6,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 
 import {
diff --git a/packages/contract-wrappers/test/order_validation_test.ts b/packages/contract-wrappers/test/order_validation_test.ts
index d28549ba2..2acdece3e 100644
--- a/packages/contract-wrappers/test/order_validation_test.ts
+++ b/packages/contract-wrappers/test/order_validation_test.ts
@@ -4,6 +4,7 @@ import { OrderError } from '@0xproject/order-utils';
 import { BlockParamLiteral } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Sinon from 'sinon';
 
 import { ContractWrappers, ContractWrappersError, ExchangeContractErrs, SignedOrder, Token } from '../src';
diff --git a/packages/contract-wrappers/test/subscription_test.ts b/packages/contract-wrappers/test/subscription_test.ts
index 64262ad9c..65c76e47f 100644
--- a/packages/contract-wrappers/test/subscription_test.ts
+++ b/packages/contract-wrappers/test/subscription_test.ts
@@ -2,6 +2,7 @@ import { BlockchainLifecycle, callbackErrorReporter, devConstants } from '@0xpro
 import { DoneCallback } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as Sinon from 'sinon';
 
diff --git a/packages/contract-wrappers/test/token_registry_wrapper_test.ts b/packages/contract-wrappers/test/token_registry_wrapper_test.ts
index a21efed21..0e9ddd245 100644
--- a/packages/contract-wrappers/test/token_registry_wrapper_test.ts
+++ b/packages/contract-wrappers/test/token_registry_wrapper_test.ts
@@ -2,6 +2,7 @@ import { BlockchainLifecycle, devConstants } from '@0xproject/dev-utils';
 import { schemas, SchemaValidator } from '@0xproject/json-schemas';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 
 import { ContractWrappers, Token } from '../src';
diff --git a/packages/contract-wrappers/test/token_transfer_proxy_wrapper_test.ts b/packages/contract-wrappers/test/token_transfer_proxy_wrapper_test.ts
index 0b66985aa..0110e437f 100644
--- a/packages/contract-wrappers/test/token_transfer_proxy_wrapper_test.ts
+++ b/packages/contract-wrappers/test/token_transfer_proxy_wrapper_test.ts
@@ -1,4 +1,5 @@
 import * as chai from 'chai';
+import 'make-promises-safe';
 
 import { ContractWrappers } from '../src';
 
diff --git a/packages/contract-wrappers/test/token_wrapper_test.ts b/packages/contract-wrappers/test/token_wrapper_test.ts
index 053901c85..9280f65cb 100644
--- a/packages/contract-wrappers/test/token_wrapper_test.ts
+++ b/packages/contract-wrappers/test/token_wrapper_test.ts
@@ -3,6 +3,7 @@ import { EmptyWalletSubprovider } from '@0xproject/subproviders';
 import { DoneCallback, Provider } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 import Web3ProviderEngine = require('web3-provider-engine');
 
diff --git a/packages/contracts/package.json b/packages/contracts/package.json
index 51bfe1712..47d427967 100644
--- a/packages/contracts/package.json
+++ b/packages/contracts/package.json
@@ -3,7 +3,7 @@
     "name": "contracts",
     "version": "2.1.28",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Smart contract components of 0x protocol",
     "main": "index.js",
@@ -53,6 +53,7 @@
         "chai-bignumber": "^2.0.1",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "prettier": "^1.11.1",
diff --git a/packages/contracts/test/ether_token.ts b/packages/contracts/test/ether_token.ts
index 4eb901dc7..bad7b5961 100644
--- a/packages/contracts/test/ether_token.ts
+++ b/packages/contracts/test/ether_token.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { BigNumber, promisify } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 
 import { WETH9Contract } from '../src/contract_wrappers/generated/weth9';
 import { artifacts } from '../util/artifacts';
diff --git a/packages/contracts/test/exchange/core.ts b/packages/contracts/test/exchange/core.ts
index e40b564c6..72e6c9b0c 100644
--- a/packages/contracts/test/exchange/core.ts
+++ b/packages/contracts/test/exchange/core.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../../src/contract_wrappers/generated/dummy_token';
diff --git a/packages/contracts/test/exchange/helpers.ts b/packages/contracts/test/exchange/helpers.ts
index 441c1bc28..c3b947983 100644
--- a/packages/contracts/test/exchange/helpers.ts
+++ b/packages/contracts/test/exchange/helpers.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
 
 import {
     ExchangeContract,
diff --git a/packages/contracts/test/exchange/wrapper.ts b/packages/contracts/test/exchange/wrapper.ts
index 57ccd05bd..cda1432c1 100644
--- a/packages/contracts/test/exchange/wrapper.ts
+++ b/packages/contracts/test/exchange/wrapper.ts
@@ -4,6 +4,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../../src/contract_wrappers/generated/dummy_token';
diff --git a/packages/contracts/test/multi_sig_with_time_lock.ts b/packages/contracts/test/multi_sig_with_time_lock.ts
index 01bc0ec90..15e8783db 100644
--- a/packages/contracts/test/multi_sig_with_time_lock.ts
+++ b/packages/contracts/test/multi_sig_with_time_lock.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, web3Factory } from '@0xproject/dev-utils';
 import { AbiDecoder, BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import * as multiSigWalletJSON from '../../build/contracts/MultiSigWalletWithTimeLock.json';
diff --git a/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts b/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
index 775d43d22..787668c21 100644
--- a/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
+++ b/packages/contracts/test/multi_sig_with_time_lock_except_remove_auth_addr.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { AbiDecoder, BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { MultiSigWalletContract } from '../src/contract_wrappers/generated/multi_sig_wallet';
diff --git a/packages/contracts/test/token_registry.ts b/packages/contracts/test/token_registry.ts
index 8b7c3048d..2116bbf0c 100644
--- a/packages/contracts/test/token_registry.ts
+++ b/packages/contracts/test/token_registry.ts
@@ -5,6 +5,7 @@ import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { TokenRegistryContract } from '../src/contract_wrappers/generated/token_registry';
diff --git a/packages/contracts/test/token_transfer_proxy/auth.ts b/packages/contracts/test/token_transfer_proxy/auth.ts
index 97e8d0c2e..47e2a4d21 100644
--- a/packages/contracts/test/token_transfer_proxy/auth.ts
+++ b/packages/contracts/test/token_transfer_proxy/auth.ts
@@ -1,6 +1,7 @@
 import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { TokenTransferProxyContract } from '../../src/contract_wrappers/generated/token_transfer_proxy';
diff --git a/packages/contracts/test/token_transfer_proxy/transfer_from.ts b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
index c31d8a1cb..875c575ce 100644
--- a/packages/contracts/test/token_transfer_proxy/transfer_from.ts
+++ b/packages/contracts/test/token_transfer_proxy/transfer_from.ts
@@ -2,6 +2,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../../src/contract_wrappers/generated/dummy_token';
diff --git a/packages/contracts/test/tutorials/arbitrage.ts b/packages/contracts/test/tutorials/arbitrage.ts
index 3d07a55a2..8e2c8de8f 100644
--- a/packages/contracts/test/tutorials/arbitrage.ts
+++ b/packages/contracts/test/tutorials/arbitrage.ts
@@ -5,6 +5,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import ethUtil = require('ethereumjs-util');
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { AccountLevelsContract } from '../../src/contract_wrappers/generated/account_levels';
diff --git a/packages/contracts/test/unlimited_allowance_token.ts b/packages/contracts/test/unlimited_allowance_token.ts
index da2e5fb5b..2b9ac9efa 100644
--- a/packages/contracts/test/unlimited_allowance_token.ts
+++ b/packages/contracts/test/unlimited_allowance_token.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { DummyTokenContract } from '../src/contract_wrappers/generated/dummy_token';
diff --git a/packages/contracts/test/zrx_token.ts b/packages/contracts/test/zrx_token.ts
index 0056ed4b5..27e876d7f 100644
--- a/packages/contracts/test/zrx_token.ts
+++ b/packages/contracts/test/zrx_token.ts
@@ -3,6 +3,7 @@ import { BlockchainLifecycle, devConstants, web3Factory } from '@0xproject/dev-u
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import * as Web3 from 'web3';
 
 import { ZRXTokenContract } from '../src/contract_wrappers/generated/zrx_token';
diff --git a/packages/dev-utils/package.json b/packages/dev-utils/package.json
index 93edd80ca..49964c82a 100644
--- a/packages/dev-utils/package.json
+++ b/packages/dev-utils/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/dev-utils",
     "version": "0.4.1",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x dev TS utils",
     "main": "lib/src/index.js",
@@ -35,6 +35,7 @@
         "@types/mocha": "^2.2.42",
         "chai": "^4.0.1",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/dev-utils/test/blockchain_lifecycle_test.ts b/packages/dev-utils/test/blockchain_lifecycle_test.ts
index 2cfad9644..857a6b50e 100644
--- a/packages/dev-utils/test/blockchain_lifecycle_test.ts
+++ b/packages/dev-utils/test/blockchain_lifecycle_test.ts
@@ -1,6 +1,7 @@
 import { BlockParamLiteral } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { BlockchainLifecycle, web3Factory } from '../src';
diff --git a/packages/dev-utils/test/rpc_test.ts b/packages/dev-utils/test/rpc_test.ts
index b6998f604..45d1226c2 100644
--- a/packages/dev-utils/test/rpc_test.ts
+++ b/packages/dev-utils/test/rpc_test.ts
@@ -1,6 +1,7 @@
 import { BlockParamLiteral } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { web3Factory } from '../src';
diff --git a/packages/fill-scenarios/package.json b/packages/fill-scenarios/package.json
index 2f1a46c97..ee426c7a1 100644
--- a/packages/fill-scenarios/package.json
+++ b/packages/fill-scenarios/package.json
@@ -29,6 +29,7 @@
         "@0xproject/tslint-config": "^0.4.17",
         "@types/lodash": "4.14.104",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
diff --git a/packages/json-schemas/package.json b/packages/json-schemas/package.json
index 6db04b35b..aece885ec 100644
--- a/packages/json-schemas/package.json
+++ b/packages/json-schemas/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/json-schemas",
     "version": "0.7.23",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x-related json schemas",
     "main": "lib/src/index.js",
@@ -61,6 +61,7 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "lodash.foreach": "^4.5.0",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/json-schemas/test/schema_test.ts b/packages/json-schemas/test/schema_test.ts
index 7b058781d..ac6a68b59 100644
--- a/packages/json-schemas/test/schema_test.ts
+++ b/packages/json-schemas/test/schema_test.ts
@@ -2,6 +2,7 @@ import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
 import forEach = require('lodash.foreach');
+import 'make-promises-safe';
 import 'mocha';
 
 import { schemas, SchemaValidator } from '../src/index';
diff --git a/packages/metacoin/package.json b/packages/metacoin/package.json
index e8ed6f100..83d083b3f 100644
--- a/packages/metacoin/package.json
+++ b/packages/metacoin/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/metacoin",
     "version": "0.0.6",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "private": true,
     "description": "Example solidity project using 0x dev tools",
@@ -45,6 +45,7 @@
         "chai-as-promised": "^7.1.0",
         "chai-bignumber": "^2.0.1",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
diff --git a/packages/metacoin/test/metacoin_test.ts b/packages/metacoin/test/metacoin_test.ts
index 8369632c2..d1331a4dc 100644
--- a/packages/metacoin/test/metacoin_test.ts
+++ b/packages/metacoin/test/metacoin_test.ts
@@ -4,6 +4,7 @@ import { LogWithDecodedArgs } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 
 import * as MetacoinArtifact from '../artifacts/Metacoin.json';
 import { MetacoinContract, TransferContractEventArgs } from '../src/contract_wrappers/metacoin';
diff --git a/packages/migrations/package.json b/packages/migrations/package.json
index b1925ed35..bbd5f32e7 100644
--- a/packages/migrations/package.json
+++ b/packages/migrations/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/migrations",
     "version": "0.0.5",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x smart contract migrations",
     "main": "lib/index.js",
@@ -10,13 +10,12 @@
     "scripts": {
         "watch": "tsc -w",
         "prebuild": "run-s clean compile copy_artifacts generate_contract_wrappers",
-        "copy_artifacts": "copyfiles -u 4 'artifacts/1.0.0/**/*' ./lib/src/artifacts",
+        "copy_artifacts": "copyfiles 'artifacts/1.0.0/**/*' ./lib",
         "build": "tsc",
         "clean": "shx rm -rf lib",
         "lint": "tslint --project .",
         "migrate": "run-s build compile script:migrate",
         "script:migrate": "node ./lib/migrate.js",
-        "copy_artifacts": "copyfiles 'artifacts/1.0.0/**/*' ./lib",
         "generate_contract_wrappers": "abi-gen --abis  ${npm_package_config_abis} --template ../contract_templates/contract.handlebars --partials '../contract_templates/partials/**/*.handlebars' --output src/contract_wrappers --backend ethers && prettier --write 'src/contract_wrappers/**.ts'",
         "compile": "sol-compiler"
     },
@@ -27,16 +26,17 @@
     "devDependencies": {
         "@0xproject/abi-gen": "^0.2.13",
         "@0xproject/dev-utils": "^0.4.1",
-        "@0xproject/types": "^0.6.3",
         "@0xproject/tslint-config": "^0.4.17",
+        "@0xproject/types": "^0.6.3",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
         "typescript": "2.7.1"
     },
     "dependencies": {
-        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/base-contract": "^0.3.1",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/typescript-typings": "^0.3.1",
         "@0xproject/utils": "^0.6.1",
         "@0xproject/web3-wrapper": "^0.6.3",
diff --git a/packages/monorepo-scripts/package.json b/packages/monorepo-scripts/package.json
index 1291e7586..4fa9497b9 100644
--- a/packages/monorepo-scripts/package.json
+++ b/packages/monorepo-scripts/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/monorepo-scripts",
     "version": "0.1.19",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Helper scripts for the monorepo",
     "main": "lib/index.js",
@@ -36,6 +36,7 @@
         "@types/rimraf": "^2.0.2",
         "depcheck": "^0.6.9",
         "lerna-get-packages": "^1.0.0",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
diff --git a/packages/order-utils/package.json b/packages/order-utils/package.json
index 35a486a6b..63caaec34 100644
--- a/packages/order-utils/package.json
+++ b/packages/order-utils/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/order-utils",
     "version": "0.0.4",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x order utils",
     "main": "lib/src/index.js",
@@ -52,6 +52,7 @@
         "chai-bignumber": "^2.0.1",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
diff --git a/packages/order-utils/test/assert_test.ts b/packages/order-utils/test/assert_test.ts
index dfd19bf86..033fd6732 100644
--- a/packages/order-utils/test/assert_test.ts
+++ b/packages/order-utils/test/assert_test.ts
@@ -1,5 +1,6 @@
 import { web3Factory } from '@0xproject/dev-utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { assert } from '../src/assert';
diff --git a/packages/order-utils/test/order_hash_test.ts b/packages/order-utils/test/order_hash_test.ts
index b6dda1a43..db5489509 100644
--- a/packages/order-utils/test/order_hash_test.ts
+++ b/packages/order-utils/test/order_hash_test.ts
@@ -1,6 +1,7 @@
 import { web3Factory } from '@0xproject/dev-utils';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { constants, getOrderHashHex } from '../src';
diff --git a/packages/order-utils/test/signature_utils_test.ts b/packages/order-utils/test/signature_utils_test.ts
index 553ec2e53..4b4de9217 100644
--- a/packages/order-utils/test/signature_utils_test.ts
+++ b/packages/order-utils/test/signature_utils_test.ts
@@ -3,6 +3,7 @@ import { JSONRPCErrorCallback, JSONRPCRequestPayload } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as Sinon from 'sinon';
 
diff --git a/packages/order-watcher/package.json b/packages/order-watcher/package.json
index 50aaffd7f..d65d3f175 100644
--- a/packages/order-watcher/package.json
+++ b/packages/order-watcher/package.json
@@ -46,10 +46,10 @@
     },
     "devDependencies": {
         "@0xproject/abi-gen": "^0.2.13",
-        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/dev-utils": "^0.4.1",
         "@0xproject/migrations": "^0.0.5",
         "@0xproject/monorepo-scripts": "^0.1.19",
+        "@0xproject/sol-compiler": "^0.4.3",
         "@0xproject/tslint-config": "^0.4.17",
         "@types/bintrees": "^1.0.2",
         "@types/lodash": "4.14.104",
@@ -63,6 +63,7 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "json-loader": "^0.5.4",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
@@ -75,9 +76,9 @@
         "typescript": "2.7.1"
     },
     "dependencies": {
-        "@0xproject/contract-wrappers": "^0.0.1",
         "@0xproject/assert": "^0.2.9",
         "@0xproject/base-contract": "^0.3.1",
+        "@0xproject/contract-wrappers": "^0.0.1",
         "@0xproject/fill-scenarios": "^0.0.1",
         "@0xproject/json-schemas": "^0.7.23",
         "@0xproject/order-utils": "^0.0.4",
diff --git a/packages/order-watcher/test/event_watcher_test.ts b/packages/order-watcher/test/event_watcher_test.ts
index b4eca315e..ba77d50dd 100644
--- a/packages/order-watcher/test/event_watcher_test.ts
+++ b/packages/order-watcher/test/event_watcher_test.ts
@@ -3,6 +3,7 @@ import { DoneCallback, LogEntry, LogEntryEvent } from '@0xproject/types';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as Sinon from 'sinon';
 
diff --git a/packages/order-watcher/test/expiration_watcher_test.ts b/packages/order-watcher/test/expiration_watcher_test.ts
index 0a2524d78..8b006f58a 100644
--- a/packages/order-watcher/test/expiration_watcher_test.ts
+++ b/packages/order-watcher/test/expiration_watcher_test.ts
@@ -6,6 +6,7 @@ import { DoneCallback, Token } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as Sinon from 'sinon';
 
diff --git a/packages/order-watcher/test/global_hooks.ts b/packages/order-watcher/test/global_hooks.ts
index 53b3ef545..03eab0e13 100644
--- a/packages/order-watcher/test/global_hooks.ts
+++ b/packages/order-watcher/test/global_hooks.ts
@@ -1,5 +1,6 @@
 import { devConstants } from '@0xproject/dev-utils';
 import { runMigrationsAsync } from '@0xproject/migrations';
+import 'make-promises-safe';
 import * as path from 'path';
 
 import { constants } from './utils/constants';
diff --git a/packages/order-watcher/test/order_watcher_test.ts b/packages/order-watcher/test/order_watcher_test.ts
index 8c9249f58..dc8e544b1 100644
--- a/packages/order-watcher/test/order_watcher_test.ts
+++ b/packages/order-watcher/test/order_watcher_test.ts
@@ -15,6 +15,7 @@ import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 
 import { OrderWatcher } from '../src/order_watcher/order_watcher';
diff --git a/packages/order-watcher/test/remaining_fillable_calculator_test.ts b/packages/order-watcher/test/remaining_fillable_calculator_test.ts
index 7ec3f1ebc..ea116175b 100644
--- a/packages/order-watcher/test/remaining_fillable_calculator_test.ts
+++ b/packages/order-watcher/test/remaining_fillable_calculator_test.ts
@@ -2,6 +2,7 @@ import { ECSignature, SignedOrder } from '@0xproject/types';
 import { BigNumber } from '@0xproject/utils';
 import { Web3Wrapper } from '@0xproject/web3-wrapper';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { RemainingFillableCalculator } from '@0xproject/order-utils';
diff --git a/packages/react-docs-example/package.json b/packages/react-docs-example/package.json
index 4c26dd3bd..2cbf3ef73 100644
--- a/packages/react-docs-example/package.json
+++ b/packages/react-docs-example/package.json
@@ -3,7 +3,7 @@
     "name": "@0xproject/react-docs-example",
     "version": "0.0.11",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "An example app using react-docs",
     "scripts": {
@@ -39,6 +39,7 @@
         "json-loader": "^0.5.4",
         "less": "^2.7.2",
         "less-loader": "^2.2.3",
+        "make-promises-safe": "^1.1.0",
         "raw-loader": "^0.5.1",
         "shx": "^0.2.2",
         "source-map-loader": "^0.2.3",
diff --git a/packages/react-docs/package.json b/packages/react-docs/package.json
index cf3575fea..9245cfb1e 100644
--- a/packages/react-docs/package.json
+++ b/packages/react-docs/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/react-docs",
     "version": "0.0.11",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "React documentation component for rendering TypeDoc & Doxity generated JSON",
     "main": "lib/index.js",
@@ -29,6 +29,7 @@
         "@0xproject/monorepo-scripts": "^0.1.19",
         "@0xproject/tslint-config": "^0.4.17",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "^5.9.1",
         "typescript": "2.7.1"
diff --git a/packages/react-shared/package.json b/packages/react-shared/package.json
index 32ef636a6..af0920d27 100644
--- a/packages/react-shared/package.json
+++ b/packages/react-shared/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/react-shared",
     "version": "0.1.6",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x shared react components",
     "main": "lib/index.js",
@@ -29,6 +29,7 @@
         "@0xproject/monorepo-scripts": "^0.1.19",
         "@0xproject/tslint-config": "^0.4.17",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "^5.9.1",
         "typescript": "2.7.1"
diff --git a/packages/sol-compiler/package.json b/packages/sol-compiler/package.json
index 42f5dd0a9..31a10f8b7 100644
--- a/packages/sol-compiler/package.json
+++ b/packages/sol-compiler/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/sol-compiler",
     "version": "0.4.3",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Solidity compiler wrapper and artifactor",
     "main": "lib/src/index.js",
@@ -59,6 +59,7 @@
         "chai-as-promised": "^7.1.0",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/sol-compiler/test/compiler_test.ts b/packages/sol-compiler/test/compiler_test.ts
index d0f121897..dc8eb1c4e 100644
--- a/packages/sol-compiler/test/compiler_test.ts
+++ b/packages/sol-compiler/test/compiler_test.ts
@@ -1,5 +1,6 @@
 import { DoneCallback } from '@0xproject/types';
 import * as chai from 'chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { Compiler } from '../src/compiler';
diff --git a/packages/sol-compiler/test/compiler_utils_test.ts b/packages/sol-compiler/test/compiler_utils_test.ts
index 4fe7b994e..a6143a719 100644
--- a/packages/sol-compiler/test/compiler_utils_test.ts
+++ b/packages/sol-compiler/test/compiler_utils_test.ts
@@ -1,6 +1,7 @@
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 
 import {
diff --git a/packages/sol-cov/package.json b/packages/sol-cov/package.json
index dc6ea42cd..28ceae0fa 100644
--- a/packages/sol-cov/package.json
+++ b/packages/sol-cov/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/sol-cov",
     "version": "0.0.10",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Generate coverage reports for Solidity code",
     "main": "lib/src/index.js",
@@ -68,6 +68,7 @@
         "chai": "^4.0.1",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/sol-cov/test/collect_contracts_data_test.ts b/packages/sol-cov/test/collect_contracts_data_test.ts
index c7c1dfe32..d84ac5a39 100644
--- a/packages/sol-cov/test/collect_contracts_data_test.ts
+++ b/packages/sol-cov/test/collect_contracts_data_test.ts
@@ -1,5 +1,6 @@
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as path from 'path';
 
diff --git a/packages/sol-cov/test/collect_coverage_entries_test.ts b/packages/sol-cov/test/collect_coverage_entries_test.ts
index c7b9d44b1..82012edfa 100644
--- a/packages/sol-cov/test/collect_coverage_entries_test.ts
+++ b/packages/sol-cov/test/collect_coverage_entries_test.ts
@@ -1,6 +1,7 @@
 import * as chai from 'chai';
 import * as fs from 'fs';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as path from 'path';
 
diff --git a/packages/sol-cov/test/instructions_test.ts b/packages/sol-cov/test/instructions_test.ts
index 195dfce2f..f66612f5f 100644
--- a/packages/sol-cov/test/instructions_test.ts
+++ b/packages/sol-cov/test/instructions_test.ts
@@ -1,5 +1,6 @@
 import * as chai from 'chai';
 import * as fs from 'fs';
+import 'make-promises-safe';
 import 'mocha';
 import * as path from 'path';
 
diff --git a/packages/sol-cov/test/source_maps_test.ts b/packages/sol-cov/test/source_maps_test.ts
index 5820bedd7..071f5a057 100644
--- a/packages/sol-cov/test/source_maps_test.ts
+++ b/packages/sol-cov/test/source_maps_test.ts
@@ -1,6 +1,7 @@
 import * as chai from 'chai';
 import * as fs from 'fs';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import * as path from 'path';
 
diff --git a/packages/sol-cov/test/utils_test.ts b/packages/sol-cov/test/utils_test.ts
index 6fc8fcfe1..9a0227773 100644
--- a/packages/sol-cov/test/utils_test.ts
+++ b/packages/sol-cov/test/utils_test.ts
@@ -1,5 +1,6 @@
 import * as chai from 'chai';
 import * as dirtyChai from 'dirty-chai';
+import 'make-promises-safe';
 import 'mocha';
 
 import { utils } from '../src/utils';
diff --git a/packages/sol-resolver/package.json b/packages/sol-resolver/package.json
index ad42dfa6c..54d8308de 100644
--- a/packages/sol-resolver/package.json
+++ b/packages/sol-resolver/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/sol-resolver",
     "version": "0.0.4",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Import resolver for smart contracts dependencies",
     "main": "lib/index.js",
@@ -27,6 +27,7 @@
         "@0xproject/monorepo-scripts": "^0.1.19",
         "@0xproject/tslint-config": "^0.4.17",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
         "typescript": "2.7.1"
diff --git a/packages/sra-report/package.json b/packages/sra-report/package.json
index 5d2245cc1..9622acd2e 100644
--- a/packages/sra-report/package.json
+++ b/packages/sra-report/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/sra-report",
     "version": "0.0.14",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Generate reports for standard relayer API compliance",
     "main": "lib/src/index.js",
@@ -54,6 +54,7 @@
         "chai-as-promised": "^7.1.0",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "nock": "^9.2.3",
         "npm-run-all": "^4.1.2",
diff --git a/packages/sra-report/test/postman_collection_v0_test.ts b/packages/sra-report/test/postman_collection_v0_test.ts
index dfb16b10d..5a2fc2520 100644
--- a/packages/sra-report/test/postman_collection_v0_test.ts
+++ b/packages/sra-report/test/postman_collection_v0_test.ts
@@ -1,3 +1,4 @@
+import 'make-promises-safe';
 import 'mocha';
 import * as nock from 'nock';
 
diff --git a/packages/sra-report/test/test_runner.ts b/packages/sra-report/test/test_runner.ts
index 91ef6aa4e..5ea3cdc4d 100644
--- a/packages/sra-report/test/test_runner.ts
+++ b/packages/sra-report/test/test_runner.ts
@@ -2,6 +2,7 @@ import * as chai from 'chai';
 import * as chaiAsPromised from 'chai-as-promised';
 import * as dirtyChai from 'dirty-chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import 'mocha';
 import {
     NewmanRunExecution,
diff --git a/packages/subproviders/package.json b/packages/subproviders/package.json
index d9eda98f3..21e47b85a 100644
--- a/packages/subproviders/package.json
+++ b/packages/subproviders/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/subproviders",
     "version": "0.10.1",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "main": "lib/src/index.js",
     "types": "lib/src/index.d.ts",
@@ -68,6 +68,7 @@
         "chai-as-promised": "^7.1.0",
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/subproviders/test/integration/ledger_subprovider_test.ts b/packages/subproviders/test/integration/ledger_subprovider_test.ts
index f1c634a77..70fd2cfce 100644
--- a/packages/subproviders/test/integration/ledger_subprovider_test.ts
+++ b/packages/subproviders/test/integration/ledger_subprovider_test.ts
@@ -7,6 +7,7 @@ import TransportNodeHid from '@ledgerhq/hw-transport-node-hid';
 import * as chai from 'chai';
 import * as ethUtils from 'ethereumjs-util';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import Web3 = require('web3');
 import Web3ProviderEngine = require('web3-provider-engine');
 import RpcSubprovider = require('web3-provider-engine/subproviders/rpc');
diff --git a/packages/subproviders/test/unit/ledger_subprovider_test.ts b/packages/subproviders/test/unit/ledger_subprovider_test.ts
index 892c2acd0..6455454cb 100644
--- a/packages/subproviders/test/unit/ledger_subprovider_test.ts
+++ b/packages/subproviders/test/unit/ledger_subprovider_test.ts
@@ -2,6 +2,7 @@ import { JSONRPCResponsePayload } from '@0xproject/types';
 import * as chai from 'chai';
 import * as ethUtils from 'ethereumjs-util';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import Web3 = require('web3');
 import Web3ProviderEngine = require('web3-provider-engine');
 
diff --git a/packages/subproviders/test/unit/mnemonic_wallet_subprovider_test.ts b/packages/subproviders/test/unit/mnemonic_wallet_subprovider_test.ts
index 93300f47d..52b636ac2 100644
--- a/packages/subproviders/test/unit/mnemonic_wallet_subprovider_test.ts
+++ b/packages/subproviders/test/unit/mnemonic_wallet_subprovider_test.ts
@@ -2,6 +2,7 @@ import { JSONRPCResponsePayload } from '@0xproject/types';
 import * as chai from 'chai';
 import * as ethUtils from 'ethereumjs-util';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import Web3ProviderEngine = require('web3-provider-engine');
 
 import { GanacheSubprovider, MnemonicWalletSubprovider } from '../../src/';
diff --git a/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts b/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
index 1a3db7672..f4aa926d7 100644
--- a/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
+++ b/packages/subproviders/test/unit/nonce_tracker_subprovider_test.ts
@@ -1,6 +1,7 @@
 import * as chai from 'chai';
 import * as fs from 'fs';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import * as path from 'path';
 import Web3ProviderEngine = require('web3-provider-engine');
 import FixtureSubprovider = require('web3-provider-engine/subproviders/fixture');
diff --git a/packages/subproviders/test/unit/private_key_wallet_subprovider_test.ts b/packages/subproviders/test/unit/private_key_wallet_subprovider_test.ts
index 5c1b5cd25..864f977ea 100644
--- a/packages/subproviders/test/unit/private_key_wallet_subprovider_test.ts
+++ b/packages/subproviders/test/unit/private_key_wallet_subprovider_test.ts
@@ -2,6 +2,7 @@ import { JSONRPCResponsePayload } from '@0xproject/types';
 import * as chai from 'chai';
 import * as ethUtils from 'ethereumjs-util';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import Web3ProviderEngine = require('web3-provider-engine');
 
 import { GanacheSubprovider, PrivateKeyWalletSubprovider } from '../../src/';
diff --git a/packages/subproviders/test/unit/redundant_rpc_subprovider_test.ts b/packages/subproviders/test/unit/redundant_rpc_subprovider_test.ts
index 9115186f4..f9c47f141 100644
--- a/packages/subproviders/test/unit/redundant_rpc_subprovider_test.ts
+++ b/packages/subproviders/test/unit/redundant_rpc_subprovider_test.ts
@@ -1,6 +1,7 @@
 import { DoneCallback, JSONRPCResponsePayload } from '@0xproject/types';
 import * as chai from 'chai';
 import * as _ from 'lodash';
+import 'make-promises-safe';
 import Web3 = require('web3');
 import Web3ProviderEngine = require('web3-provider-engine');
 import RpcSubprovider = require('web3-provider-engine/subproviders/rpc');
diff --git a/packages/testnet-faucets/package.json b/packages/testnet-faucets/package.json
index 693e980ed..db5fe75c7 100644
--- a/packages/testnet-faucets/package.json
+++ b/packages/testnet-faucets/package.json
@@ -3,7 +3,7 @@
     "name": "@0xproject/testnet-faucets",
     "version": "1.0.29",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "A faucet micro-service that dispenses test ERC20 tokens or Ether",
     "main": "server.js",
@@ -39,6 +39,7 @@
         "@types/lodash": "4.14.104",
         "awesome-typescript-loader": "^3.1.3",
         "gulp": "^3.9.1",
+        "make-promises-safe": "^1.1.0",
         "nodemon": "^1.11.0",
         "shx": "^0.2.2",
         "source-map-loader": "^0.1.6",
diff --git a/packages/tslint-config/package.json b/packages/tslint-config/package.json
index d7e62fc51..317ae4591 100644
--- a/packages/tslint-config/package.json
+++ b/packages/tslint-config/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/tslint-config",
     "version": "0.4.17",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Lint rules related to 0xProject for TSLint",
     "main": "tslint.json",
@@ -37,6 +37,7 @@
         "@0xproject/monorepo-scripts": "^0.1.19",
         "@types/lodash": "4.14.104",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "typescript": "2.7.1"
     },
diff --git a/packages/types/package.json b/packages/types/package.json
index 2d79af6fd..edd17c42c 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/types",
     "version": "0.6.3",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x types",
     "main": "lib/index.js",
@@ -27,6 +27,7 @@
         "@0xproject/monorepo-scripts": "^0.1.19",
         "@0xproject/tslint-config": "^0.4.17",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
         "typescript": "2.7.1"
diff --git a/packages/typescript-typings/package.json b/packages/typescript-typings/package.json
index 5a7268126..986acfcee 100644
--- a/packages/typescript-typings/package.json
+++ b/packages/typescript-typings/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/typescript-typings",
     "version": "0.3.1",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x project typescript type definitions",
     "scripts": {
@@ -31,6 +31,7 @@
     "devDependencies": {
         "@0xproject/monorepo-scripts": "^0.1.19",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "shx": "^0.2.2"
     },
     "publishConfig": {
diff --git a/packages/utils/package.json b/packages/utils/package.json
index d39077148..66dc682fa 100644
--- a/packages/utils/package.json
+++ b/packages/utils/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/utils",
     "version": "0.6.1",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "0x TS utils",
     "main": "lib/index.js",
@@ -28,6 +28,7 @@
         "@0xproject/tslint-config": "^0.4.17",
         "@types/lodash": "4.14.104",
         "copyfiles": "^1.2.0",
+        "make-promises-safe": "^1.1.0",
         "npm-run-all": "^4.1.2",
         "shx": "^0.2.2",
         "tslint": "5.8.0",
diff --git a/packages/web3-wrapper/package.json b/packages/web3-wrapper/package.json
index c0fa45433..ed2fce7dc 100644
--- a/packages/web3-wrapper/package.json
+++ b/packages/web3-wrapper/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/web3-wrapper",
     "version": "0.6.3",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "description": "Wraps around web3 and gives a nicer interface",
     "main": "lib/src/index.js",
@@ -52,6 +52,7 @@
         "copyfiles": "^1.2.0",
         "dirty-chai": "^2.0.1",
         "ganache-core": "0xProject/ganache-core",
+        "make-promises-safe": "^1.1.0",
         "mocha": "^4.0.1",
         "npm-run-all": "^4.1.2",
         "nyc": "^11.0.1",
diff --git a/packages/web3-wrapper/test/web3_wrapper_test.ts b/packages/web3-wrapper/test/web3_wrapper_test.ts
index 2bf3badaa..326efe654 100644
--- a/packages/web3-wrapper/test/web3_wrapper_test.ts
+++ b/packages/web3-wrapper/test/web3_wrapper_test.ts
@@ -1,5 +1,6 @@
 import * as chai from 'chai';
 import * as Ganache from 'ganache-core';
+import 'make-promises-safe';
 import 'mocha';
 
 import { Web3Wrapper } from '../src';
diff --git a/packages/website/package.json b/packages/website/package.json
index f1b2a1750..3ef66d269 100644
--- a/packages/website/package.json
+++ b/packages/website/package.json
@@ -2,7 +2,7 @@
     "name": "@0xproject/website",
     "version": "0.0.32",
     "engines": {
-        "node" : ">=6.12"
+        "node": ">=6.12"
     },
     "private": true,
     "description": "Website and 0x portal dapp",
@@ -80,6 +80,7 @@
         "imports-loader": "0.6.x",
         "json-loader": "^0.5.4",
         "less-loader": "^2.2.3",
+        "make-promises-safe": "^1.1.0",
         "raw-loader": "^0.5.1",
         "shx": "^0.2.2",
         "source-map-loader": "^0.1.6",
diff --git a/yarn.lock b/yarn.lock
index 5c6b425eb..0fbfc5061 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -7154,6 +7154,10 @@ make-iterator@^1.0.0:
   dependencies:
     kind-of "^3.1.0"
 
+make-promises-safe@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/make-promises-safe/-/make-promises-safe-1.1.0.tgz#b4d28c61ef8ad5502f38dbb3a0ee89627f76ad61"
+
 map-cache@^0.2.0, map-cache@^0.2.2:
   version "0.2.2"
   resolved "https://registry.yarnpkg.com/map-cache/-/map-cache-0.2.2.tgz#c32abd0bd6525d9b051645bb4f26ac5dc98a0dbf"