4 files changed, 12 insertions, 21 deletions
diff --git a/packages/instant/src/util/balance.ts b/packages/instant/src/util/balance.ts
deleted file mode 100644
index f2271495b..000000000
--- a/packages/instant/src/util/balance.ts
+++ /dev/null
@@ -1,13 +0,0 @@
-import { BuyQuote } from '@0x/asset-buyer';
-import { Web3Wrapper } from '@0x/web3-wrapper';
-import * as _ from 'lodash';
-
-export const balanceUtil = {
-    hasSufficientEth: async (takerAddress: string | undefined, buyQuote: BuyQuote, web3Wrapper: Web3Wrapper) => {
-        if (_.isUndefined(takerAddress)) {
-            return false;
-        }
-        const balanceWei = await web3Wrapper.getBalanceInWeiAsync(takerAddress);
-        return balanceWei.gte(buyQuote.worstCaseQuoteInfo.totalEthAmount);
-    },
-};
diff --git a/packages/instant/src/util/etherscan.ts b/packages/instant/src/util/etherscan.ts
index cfc2578a3..4d62c4d9f 100644
--- a/packages/instant/src/util/etherscan.ts
+++ b/packages/instant/src/util/etherscan.ts
@@ -21,4 +21,11 @@ export const etherscanUtil = {
         }
         return `https://${prefix}etherscan.io/tx/${txHash}`;
     },
+    getEtherScanEthAddressIfExists: (ethAddress: string, networkId: number) => {
+        const prefix = etherscanPrefix(networkId);
+        if (_.isUndefined(prefix)) {
+            return;
+        }
+        return `https://${prefix}etherscan.io/address/${ethAddress}`;
+    },
 };
diff --git a/packages/instant/src/util/format.ts b/packages/instant/src/util/format.ts
index 4a48dec9d..44661d697 100644
--- a/packages/instant/src/util/format.ts
+++ b/packages/instant/src/util/format.ts
@@ -50,4 +50,7 @@ export const format = {
         }
         return `$${ethUnitAmount.mul(ethUsdPrice).toFixed(decimalPlaces)}`;
     },
+    ethAddress: (address: string): string => {
+        return `0x${address.slice(2, 7)}…${address.slice(-5)}`;
+    },
 };
diff --git a/packages/instant/src/util/provider_state_factory.ts b/packages/instant/src/util/provider_state_factory.ts
index 18b188d89..3281f6bfb 100644
--- a/packages/instant/src/util/provider_state_factory.ts
+++ b/packages/instant/src/util/provider_state_factory.ts
@@ -2,18 +2,12 @@ import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider } from 'ethereum-types';
 import * as _ from 'lodash';
 
-import { AccountNotReady, AccountState, Maybe, Network, OrderSource, ProviderState } from '../types';
+import { LOADING_ACCOUNT, NO_ACCOUNT } from '../constants';
+import { Maybe, Network, OrderSource, ProviderState } from '../types';
 
 import { assetBuyerFactory } from './asset_buyer_factory';
 import { providerFactory } from './provider_factory';
 
-const LOADING_ACCOUNT: AccountNotReady = {
-    state: AccountState.Loading,
-};
-const NO_ACCOUNT: AccountNotReady = {
-    state: AccountState.None,
-};
-
 export const providerStateFactory = {
     getInitialProviderState: (orderSource: OrderSource, network: Network, provider?: Provider): ProviderState => {
         if (!_.isUndefined(provider)) {