diff --git a/packages/asset-swapper/test/swap_quote_calculator_test.ts b/packages/asset-swapper/test/swap_quote_calculator_test.ts
index e6bd51da4e..4ef00dbefb 100644
--- a/packages/asset-swapper/test/swap_quote_calculator_test.ts
+++ b/packages/asset-swapper/test/swap_quote_calculator_test.ts
@@ -48,7 +48,7 @@ describe('swapQuoteCalculator', () => {
                 };
                 await testHelpers.expectInsufficientLiquidityErrorAsync(expect, errorFunction, baseUnitAmount(9));
             });
-            it('should throw if not enough taker asset liquidity (multiple feeless orders with 20% slippage)',async () => {
+            it('should throw if not enough taker asset liquidity (multiple feeless orders with 20% slippage)', async () => {
                 const errorFunction = async () => {
                     await swapQuoteCalculator.calculateMarketSellSwapQuoteAsync(
                         testOrders.PRUNED_SIGNED_ORDERS_FEELESS,
diff --git a/packages/instant/src/components/buy_order_state_buttons.tsx b/packages/instant/src/components/buy_order_state_buttons.tsx
index e04832fbe2..017a5c45e6 100644
--- a/packages/instant/src/components/buy_order_state_buttons.tsx
+++ b/packages/instant/src/components/buy_order_state_buttons.tsx
@@ -1,10 +1,4 @@
-import {
-    MarketBuySwapQuote,
-    SwapQuoteConsumer,
-    SwapQuoter,
-    SwapQuoterError,
-    SwapQuoteConsumerError,
-} from '@0x/asset-swapper';
+import { MarketBuySwapQuote, SwapQuoteConsumer, SwapQuoteConsumerError, SwapQuoter } from '@0x/asset-swapper';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as React from 'react';
diff --git a/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts b/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
index 255f617b1c..90553ae5eb 100644
--- a/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
+++ b/packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts
@@ -1,10 +1,4 @@
-import {
-    MarketBuySwapQuote,
-    SwapQuoteConsumer,
-    SwapQuoteConsumerError,
-    SwapQuoter,
-    SwapQuoterError,
-} from '@0x/asset-swapper';
+import { MarketBuySwapQuote, SwapQuoteConsumer, SwapQuoteConsumerError, SwapQuoter } from '@0x/asset-swapper';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as _ from 'lodash';
diff --git a/packages/instant/src/util/asset_swapper_factory.ts b/packages/instant/src/util/asset_swapper_factory.ts
index 71b56848a0..806dcabaac 100644
--- a/packages/instant/src/util/asset_swapper_factory.ts
+++ b/packages/instant/src/util/asset_swapper_factory.ts
@@ -1,4 +1,4 @@
-import { SwapQuoteConsumer, SwapQuoter, SwapQuoteConsumerOpts, SwapQuoterOpts } from '@0x/asset-swapper';
+import { SwapQuoteConsumer, SwapQuoter, SwapQuoterOpts } from '@0x/asset-swapper';
 import { SupportedProvider } from 'ethereum-types';
 import * as _ from 'lodash';
 
diff --git a/packages/instant/src/util/swap_quote_updater.ts b/packages/instant/src/util/swap_quote_updater.ts
index c7f80c01b4..032b14f85e 100644
--- a/packages/instant/src/util/swap_quote_updater.ts
+++ b/packages/instant/src/util/swap_quote_updater.ts
@@ -1,14 +1,14 @@
-import { MarketBuySwapQuote, SwapQuote, SwapQuoter } from '@0x/asset-swapper';
+import { MarketBuySwapQuote, SwapQuoter } from '@0x/asset-swapper';
 import { AssetProxyId } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as _ from 'lodash';
 import { Dispatch } from 'redux';
-import { oc } from 'ts-optchain';
 
 import { ERC20_SWAP_QUOTE_SLIPPAGE_PERCENTAGE, ERC721_SWAP_QUOTE_SLIPPAGE_PERCENTAGE } from '../constants';
 import { Action, actions } from '../redux/actions';
 import { Asset, QuoteFetchOrigin } from '../types';
+
 import { analytics } from './analytics';
 import { assetUtils } from './asset';
 import { errorFlasher } from './error_flasher';