feat(instant): fallback to an empty wallet provider when none is injected

packages/instant/package.json

@@ -49,6 +49,7 @@
         "@0x/asset-buyer": "^2.1.0",
         "@0x/json-schemas": "^2.0.0",
         "@0x/order-utils": "^2.0.0",
+        "@0x/subproviders": "^2.1.0",
         "@0x/types": "^1.2.0",
         "@0x/typescript-typings": "^3.0.3",
         "@0x/utils": "^2.0.3",

packages/instant/src/components/buy_button.tsx

@@ -17,7 +17,7 @@ import { Text } from './ui/text';
 
 export interface BuyButtonProps {
     buyQuote?: BuyQuote;
-    assetBuyer?: AssetBuyer;
+    assetBuyer: AssetBuyer;
     affiliateInfo?: AffiliateInfo;
     onValidationPending: (buyQuote: BuyQuote) => void;
     onValidationFail: (buyQuote: BuyQuote, errorMessage: AssetBuyerError | ZeroExInstantError) => void;
@@ -34,7 +34,7 @@ export class BuyButton extends React.Component<BuyButtonProps> {
         onBuyFailure: util.boundNoop,
     };
     public render(): React.ReactNode {
-        const shouldDisableButton = _.isUndefined(this.props.buyQuote) || _.isUndefined(this.props.assetBuyer);
+        const shouldDisableButton = _.isUndefined(this.props.buyQuote);
         return (
             <Button width="100%" onClick={this._handleClick} isDisabled={shouldDisableButton}>
                 <Text fontColor={ColorOption.white} fontWeight={600} fontSize="20px">
@@ -46,11 +46,13 @@ export class BuyButton extends React.Component<BuyButtonProps> {
     private readonly _handleClick = async () => {
         // The button is disabled when there is no buy quote anyway.
         const { buyQuote, assetBuyer, affiliateInfo } = this.props;
-        if (_.isUndefined(buyQuote) || _.isUndefined(assetBuyer)) {
+        if (_.isUndefined(buyQuote)) {
             return;
         }
 
         this.props.onValidationPending(buyQuote);
+
+        // TODO(bmillman): move address and balance fetching to the async state
         const web3Wrapper = new Web3Wrapper(assetBuyer.provider);
         const takerAddress = await getBestAddress(web3Wrapper);
 

packages/instant/src/components/buy_order_state_buttons.tsx

@@ -15,7 +15,7 @@ import { Text } from './ui/text';
 export interface BuyOrderStateButtonProps {
     buyQuote?: BuyQuote;
     buyOrderProcessingState: OrderProcessState;
-    assetBuyer?: AssetBuyer;
+    assetBuyer: AssetBuyer;
     affiliateInfo?: AffiliateInfo;
     onViewTransaction: () => void;
     onValidationPending: (buyQuote: BuyQuote) => void;

packages/instant/src/components/zero_ex_instant_provider.tsx

@@ -1,23 +1,22 @@
-import { AssetBuyer } from '@0x/asset-buyer';
+import { ObjectMap } from '@0x/types';
-import { ObjectMap, SignedOrder } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import { Provider } from 'ethereum-types';
 import * as _ from 'lodash';
 import * as React from 'react';
 import { Provider as ReduxProvider } from 'react-redux';
-import { oc } from 'ts-optchain';
 
 import { SelectedAssetThemeProvider } from '../containers/selected_asset_theme_provider';
 import { asyncData } from '../redux/async_data';
-import { INITIAL_STATE, State } from '../redux/reducer';
+import { DEFAULT_STATE, DefaultState, State } from '../redux/reducer';
 import { store, Store } from '../redux/store';
 import { fonts } from '../style/fonts';
-import { AffiliateInfo, AssetMetaData, Network } from '../types';
+import { AffiliateInfo, AssetMetaData, Network, OrderSource, ProviderState, ProviderType } from '../types';
 import { assetUtils } from '../util/asset';
+import { assetBuyerFactory } from '../util/asset_buyer_factory';
 import { errorFlasher } from '../util/error_flasher';
 import { gasPriceEstimator } from '../util/gas_price_estimator';
-import { getInjectedProvider } from '../util/injected_provider';
+import { providerFactory } from '../util/provider_factory';
 
 fonts.include();
 
@@ -25,7 +24,7 @@ export type ZeroExInstantProviderProps = ZeroExInstantProviderRequiredProps &
     Partial<ZeroExInstantProviderOptionalProps>;
 
 export interface ZeroExInstantProviderRequiredProps {
-    orderSource: string | SignedOrder[];
+    orderSource: OrderSource;
 }
 
 export interface ZeroExInstantProviderOptionalProps {
@@ -41,30 +40,43 @@ export interface ZeroExInstantProviderOptionalProps {
 export class ZeroExInstantProvider extends React.Component<ZeroExInstantProviderProps> {
     private readonly _store: Store;
     // TODO(fragosti): Write tests for this beast once we inject a provider.
-    private static _mergeInitialStateWithProps(props: ZeroExInstantProviderProps, state: State = INITIAL_STATE): State {
+    private static _mergeDefaultStateWithProps(
-        const networkId = props.networkId || state.network;
+        props: ZeroExInstantProviderProps,
-        // TODO: Proper wallet connect flow
+        defaultState: DefaultState = DEFAULT_STATE,
-        const provider = props.provider || getInjectedProvider();
+    ): State {
-        const assetBuyerOptions = {
+        // use the networkId passed in with the props, otherwise default to that of the default state (1, mainnet)
-            networkId,
+        const networkId = props.networkId || defaultState.network;
-        };
+        // construct the ProviderState
-        let assetBuyer;
+        let provider: Provider;
-        if (_.isString(props.orderSource)) {
+        let providerType: ProviderType;
-            assetBuyer = AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(
+        if (!_.isUndefined(props.provider)) {
-                provider,
+            provider = props.provider;
-                props.orderSource,
+            providerType = ProviderType.Props;
-                assetBuyerOptions,
-            );
         } else {
-            assetBuyer = AssetBuyer.getAssetBuyerForProvidedOrders(provider, props.orderSource, assetBuyerOptions);
+            const injectedProviderIfExists = providerFactory.getInjectedProviderIfExists();
+            if (!_.isUndefined(injectedProviderIfExists)) {
+                provider = injectedProviderIfExists;
+                providerType = ProviderType.Injected;
+            } else {
+                provider = providerFactory.getFallbackNoSigningProvider(networkId);
+                providerType = ProviderType.FallbackEmptyWallet;
             }
+        }
+        const providerState: ProviderState = {
+            provider,
+            type: providerType,
+            web3Wrapper: new Web3Wrapper(provider),
+            assetBuyer: assetBuyerFactory.getAssetBuyer(provider, props.orderSource, networkId),
+        };
+        // merge the additional additionalAssetMetaDataMap with our default map
         const completeAssetMetaDataMap = {
             ...props.additionalAssetMetaDataMap,
-            ...state.assetMetaDataMap,
+            ...defaultState.assetMetaDataMap,
         };
+        // construct the final state
         const storeStateFromProps: State = {
-            ...state,
+            ...defaultState,
-            assetBuyer,
+            providerState,
             network: networkId,
             selectedAsset: _.isUndefined(props.defaultSelectedAssetData)
                 ? undefined
@@ -74,7 +86,7 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
                       networkId,
                   ),
             selectedAssetAmount: _.isUndefined(props.defaultAssetBuyAmount)
-                ? state.selectedAssetAmount
+                ? undefined
                 : new BigNumber(props.defaultAssetBuyAmount),
             availableAssets: _.isUndefined(props.availableAssetDatas)
                 ? undefined
@@ -86,10 +98,9 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
     }
     constructor(props: ZeroExInstantProviderProps) {
         super(props);
-        const initialAppState = ZeroExInstantProvider._mergeInitialStateWithProps(this.props, INITIAL_STATE);
+        const initialAppState = ZeroExInstantProvider._mergeDefaultStateWithProps(this.props);
         this._store = store.create(initialAppState);
     }
-
     public componentDidMount(): void {
         const state = this._store.getState();
         // tslint:disable-next-line:no-floating-promises
@@ -108,7 +119,6 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
         // tslint:disable-next-line:no-floating-promises
         this._flashErrorIfWrongNetwork();
     }
-
     public render(): React.ReactNode {
         return (
             <ReduxProvider store={this._store}>
@@ -116,19 +126,15 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
             </ReduxProvider>
         );
     }
-
     private readonly _flashErrorIfWrongNetwork = async (): Promise<void> => {
         const msToShowError = 30000; // 30 seconds
-        const network = this._store.getState().network;
+        const state = this._store.getState();
-        const assetBuyerIfExists = this._store.getState().assetBuyer;
+        const network = state.network;
-        const providerIfExists = oc(assetBuyerIfExists).provider();
+        const web3Wrapper = state.providerState.web3Wrapper;
-        if (!_.isUndefined(providerIfExists)) {
-            const web3Wrapper = new Web3Wrapper(providerIfExists);
         const networkOfProvider = await web3Wrapper.getNetworkIdAsync();
         if (network !== networkOfProvider) {
             const errorMessage = `Wrong network detected. Try switching to ${Network[network]}.`;
             errorFlasher.flashNewErrorMessage(this._store.dispatch, errorMessage, msToShowError);
         }
-        }
     };
 }

packages/instant/src/constants.ts

@@ -1,4 +1,7 @@
 import { BigNumber } from '@0x/utils';
+
+import { Network } from './types';
+
 export const BIG_NUMBER_ZERO = new BigNumber(0);
 export const ETH_DECIMALS = 18;
 export const DEFAULT_ZERO_EX_CONTAINER_SELECTOR = '#zeroExInstantContainer';
@@ -13,3 +16,8 @@ export const ETH_GAS_STATION_API_BASE_URL = 'https://ethgasstation.info';
 export const COINBASE_API_BASE_URL = 'https://api.coinbase.com/v2';
 export const PROGRESS_STALL_AT_WIDTH = '95%';
 export const PROGRESS_FINISH_ANIMATION_TIME_MS = 200;
+export const ETHEREUM_NODE_URL_BY_NETWORK = {
+    [Network.Mainnet]: 'https://mainnet.infura.io/',
+    [Network.Kovan]: 'https://kovan.infura.io/',
+};
+export const BLOCK_POLLING_INTERVAL_MS = 10000; // 10s

packages/instant/src/containers/selected_asset_buy_order_state_buttons.ts

@@ -14,7 +14,7 @@ import { etherscanUtil } from '../util/etherscan';
 interface ConnectedState {
     buyQuote?: BuyQuote;
     buyOrderProcessingState: OrderProcessState;
-    assetBuyer?: AssetBuyer;
+    assetBuyer: AssetBuyer;
     affiliateInfo?: AffiliateInfo;
     onViewTransaction: () => void;
 }
@@ -29,21 +29,22 @@ interface ConnectedDispatch {
     onValidationFail: (buyQuote: BuyQuote, errorMessage: AssetBuyerError | ZeroExInstantError) => void;
 }
 export interface SelectedAssetBuyOrderStateButtons {}
-const mapStateToProps = (state: State, _ownProps: SelectedAssetBuyOrderStateButtons): ConnectedState => ({
+const mapStateToProps = (state: State, _ownProps: SelectedAssetBuyOrderStateButtons): ConnectedState => {
+    const assetBuyer = state.providerState.assetBuyer;
+    return {
         buyOrderProcessingState: state.buyOrderState.processState,
-    assetBuyer: state.assetBuyer,
+        assetBuyer,
         buyQuote: state.latestBuyQuote,
         affiliateInfo: state.affiliateInfo,
         onViewTransaction: () => {
             if (
-            state.assetBuyer &&
+                state.buyOrderState.processState === OrderProcessState.Processing ||
-            (state.buyOrderState.processState === OrderProcessState.Processing ||
                 state.buyOrderState.processState === OrderProcessState.Success ||
-                state.buyOrderState.processState === OrderProcessState.Failure)
+                state.buyOrderState.processState === OrderProcessState.Failure
             ) {
                 const etherscanUrl = etherscanUtil.getEtherScanTxnAddressIfExists(
                     state.buyOrderState.txHash,
-                state.assetBuyer.networkId,
+                    assetBuyer.networkId,
                 );
                 if (etherscanUrl) {
                     window.open(etherscanUrl, '_blank');
@@ -51,7 +52,8 @@ const mapStateToProps = (state: State, _ownProps: SelectedAssetBuyOrderStateButt
                 }
             }
         },
-});
+    };
+};
 
 const mapDispatchToProps = (
     dispatch: Dispatch<Action>,

packages/instant/src/containers/selected_erc20_asset_amount_input.ts

@@ -23,7 +23,7 @@ export interface SelectedERC20AssetAmountInputProps {
 }
 
 interface ConnectedState {
-    assetBuyer?: AssetBuyer;
+    assetBuyer: AssetBuyer;
     value?: BigNumber;
     asset?: ERC20Asset;
     isDisabled: boolean;
@@ -33,7 +33,7 @@ interface ConnectedState {
 
 interface ConnectedDispatch {
     updateBuyQuote: (
-        assetBuyer?: AssetBuyer,
+        assetBuyer: AssetBuyer,
         value?: BigNumber,
         asset?: ERC20Asset,
         affiliateInfo?: AffiliateInfo,
@@ -59,8 +59,9 @@ const mapStateToProps = (state: State, _ownProps: SelectedERC20AssetAmountInputP
             ? (state.selectedAsset as ERC20Asset)
             : undefined;
     const numberOfAssetsAvailable = _.isUndefined(state.availableAssets) ? undefined : state.availableAssets.length;
+    const assetBuyer = state.providerState.assetBuyer;
     return {
-        assetBuyer: state.assetBuyer,
+        assetBuyer,
         value: state.selectedAssetAmount,
         asset: selectedAsset,
         isDisabled,
@@ -128,7 +129,7 @@ const mapDispatchToProps = (
         // reset our buy state
         dispatch(actions.setBuyOrderStateNone());
 
-        if (!_.isUndefined(value) && value.greaterThan(0) && !_.isUndefined(asset) && !_.isUndefined(assetBuyer)) {
+        if (!_.isUndefined(value) && value.greaterThan(0) && !_.isUndefined(asset)) {
             // even if it's debounced, give them the illusion it's loading
             dispatch(actions.setQuoteRequestStatePending());
             // tslint:disable-next-line:no-floating-promises

packages/instant/src/redux/async_data.ts

@@ -20,8 +20,8 @@ export const asyncData = {
         }
     },
     fetchAvailableAssetDatasAndDispatchToStore: async (store: Store) => {
-        const { assetBuyer, assetMetaDataMap, network } = store.getState();
+        const { providerState, assetMetaDataMap, network } = store.getState();
-        if (!_.isUndefined(assetBuyer)) {
+        const assetBuyer = providerState.assetBuyer;
         try {
             const assetDatas = await assetBuyer.getAvailableAssetDatasAsync();
             const assets = assetUtils.createAssetsFromAssetDatas(assetDatas, assetMetaDataMap, network);
@@ -32,6 +32,5 @@ export const asyncData = {
             // On error, just specify that none are available
             store.dispatch(actions.setAvailableAssets([]));
         }
-        }
     },
 };

packages/instant/src/redux/reducer.ts

@@ -1,4 +1,4 @@
-import { AssetBuyer, BuyQuote } from '@0x/asset-buyer';
+import { BuyQuote } from '@0x/asset-buyer';
 import { AssetProxyId, ObjectMap } from '@0x/types';
 import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
@@ -14,41 +14,48 @@ import {
     Network,
     OrderProcessState,
     OrderState,
+    ProviderState,
 } from '../types';
 
 import { Action, ActionTypes } from './actions';
 
-export interface State {
+// State that is required and we have defaults for, before props are passed in
+export interface DefaultState {
     network: Network;
-    assetBuyer?: AssetBuyer;
     assetMetaDataMap: ObjectMap<AssetMetaData>;
-    selectedAsset?: Asset;
-    availableAssets?: Asset[];
-    selectedAssetAmount?: BigNumber;
     buyOrderState: OrderState;
-    ethUsdPrice?: BigNumber;
-    latestBuyQuote?: BuyQuote;
-    quoteRequestState: AsyncProcessState;
-    latestErrorMessage?: string;
     latestErrorDisplayStatus: DisplayStatus;
-    affiliateInfo?: AffiliateInfo;
+    quoteRequestState: AsyncProcessState;
 }
 
-export const INITIAL_STATE: State = {
+// State that is required but needs to be derived from the props
+interface PropsDerivedState {
+    providerState: ProviderState;
+}
+
+// State that is optional
+interface OptionalState {
+    selectedAsset: Asset;
+    availableAssets: Asset[];
+    selectedAssetAmount: BigNumber;
+    ethUsdPrice: BigNumber;
+    latestBuyQuote: BuyQuote;
+    latestErrorMessage: string;
+    affiliateInfo: AffiliateInfo;
+}
+
+export type State = DefaultState & PropsDerivedState & Partial<OptionalState>;
+
+export const DEFAULT_STATE: DefaultState = {
     network: Network.Mainnet,
-    selectedAssetAmount: undefined,
-    availableAssets: undefined,
     assetMetaDataMap,
     buyOrderState: { processState: OrderProcessState.None },
-    ethUsdPrice: undefined,
-    latestBuyQuote: undefined,
-    latestErrorMessage: undefined,
     latestErrorDisplayStatus: DisplayStatus.Hidden,
     quoteRequestState: AsyncProcessState.None,
-    affiliateInfo: undefined,
 };
 
-export const reducer = (state: State = INITIAL_STATE, action: Action): State => {
+export const createReducer = (initialState: State) => {
+    const reducer = (state: State = initialState, action: Action): State => {
         switch (action.type) {
             case ActionTypes.UPDATE_ETH_USD_PRICE:
                 return {
@@ -180,6 +187,8 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
             default:
                 return state;
         }
+    };
+    return reducer;
 };
 
 const doesBuyQuoteMatchState = (buyQuote: BuyQuote, state: State): boolean => {

packages/instant/src/redux/store.ts

@@ -2,12 +2,13 @@ import * as _ from 'lodash';
 import { createStore, Store as ReduxStore } from 'redux';
 import { devToolsEnhancer } from 'redux-devtools-extension/developmentOnly';
 
-import { reducer, State } from './reducer';
+import { createReducer, State } from './reducer';
 
 export type Store = ReduxStore<State>;
 
 export const store = {
-    create: (state: State): Store => {
+    create: (initialState: State): Store => {
-        return createStore(reducer, state, devToolsEnhancer({}));
+        const reducer = createReducer(initialState);
+        return createStore(reducer, initialState, devToolsEnhancer({}));
     },
 };

packages/instant/src/types.ts

@@ -1,4 +1,7 @@
-import { AssetProxyId, ObjectMap } from '@0x/types';
+import { AssetBuyer } from '@0x/asset-buyer';
+import { AssetProxyId, ObjectMap, SignedOrder } from '@0x/types';
+import { Web3Wrapper } from '@0x/web3-wrapper';
+import { Provider } from 'ethereum-types';
 
 // Reusable
 export type Maybe<T> = T | undefined;
@@ -89,3 +92,24 @@ export interface AffiliateInfo {
     feeRecipient: string;
     feePercentage: number;
 }
+
+/**
+ * Our provider may be of 3 different types:
+ * Props: the provider was passed in a prop to the component
+ * Injected: the provider was injected into `window`
+ * FallbackEmptyWallet: the provider has no wallet but responds to data requests using infura
+ */
+export enum ProviderType {
+    Props = 'PROPS',
+    Injected = 'INJECTED',
+    FallbackEmptyWallet = 'FALLBACK_EMPTY_WALLET',
+}
+
+export interface ProviderState {
+    type: ProviderType;
+    provider: Provider;
+    assetBuyer: AssetBuyer;
+    web3Wrapper: Web3Wrapper;
+}
+
+export type OrderSource = string | SignedOrder[];

packages/instant/src/util/asset_buyer_factory.ts

@@ -0,0 +1,17 @@
+import { AssetBuyer, AssetBuyerOpts } from '@0x/asset-buyer';
+import { Provider } from 'ethereum-types';
+import * as _ from 'lodash';
+
+import { Network, OrderSource } from '../types';
+
+export const assetBuyerFactory = {
+    getAssetBuyer: (provider: Provider, orderSource: OrderSource, network: Network): AssetBuyer => {
+        const assetBuyerOptions: Partial<AssetBuyerOpts> = {
+            networkId: network,
+        };
+        const assetBuyer = _.isString(orderSource)
+            ? AssetBuyer.getAssetBuyerForStandardRelayerAPIUrl(provider, orderSource, assetBuyerOptions)
+            : AssetBuyer.getAssetBuyerForProvidedOrders(provider, orderSource, assetBuyerOptions);
+        return assetBuyer;
+    },
+};

packages/instant/src/util/injected_provider.ts

@@ -1,16 +0,0 @@
-import { Provider } from 'ethereum-types';
-import * as _ from 'lodash';
-
-export const getInjectedProvider = (): Provider => {
-    const injectedProviderIfExists = (window as any).ethereum;
-    if (!_.isUndefined(injectedProviderIfExists)) {
-        // TODO: call enable here when implementing wallet connection flow
-        return injectedProviderIfExists;
-    }
-    const injectedWeb3IfExists = (window as any).web3;
-    if (!_.isUndefined(injectedWeb3IfExists.currentProvider)) {
-        return injectedWeb3IfExists.currentProvider;
-    } else {
-        throw new Error(`No injected web3 found`);
-    }
-};

packages/instant/src/util/provider_factory.ts

@@ -0,0 +1,34 @@
+import { EmptyWalletSubprovider, RPCSubprovider, Web3ProviderEngine } from '@0x/subproviders';
+import { Provider } from 'ethereum-types';
+import * as _ from 'lodash';
+
+import { BLOCK_POLLING_INTERVAL_MS, ETHEREUM_NODE_URL_BY_NETWORK } from '../constants';
+import { Maybe, Network } from '../types';
+
+export const providerFactory = {
+    getInjectedProviderIfExists: (): Maybe<Provider> => {
+        const injectedProviderIfExists = (window as any).ethereum;
+        if (!_.isUndefined(injectedProviderIfExists)) {
+            return injectedProviderIfExists;
+        }
+        const injectedWeb3IfExists = (window as any).web3;
+        if (!_.isUndefined(injectedWeb3IfExists) && !_.isUndefined(injectedWeb3IfExists.currentProvider)) {
+            return injectedWeb3IfExists.currentProvider;
+        }
+        return undefined;
+    },
+    getFallbackNoSigningProvider: (network: Network): Provider => {
+        const providerEngine = new Web3ProviderEngine({
+            pollingInterval: BLOCK_POLLING_INTERVAL_MS,
+        });
+        // Intercept calls to `eth_accounts` and always return empty
+        providerEngine.addProvider(new EmptyWalletSubprovider());
+        // Construct an RPC subprovider, all data based requests will be sent via the RPCSubprovider
+        // TODO(bmillman): make this more resilient to infura failures
+        const rpcUrl = ETHEREUM_NODE_URL_BY_NETWORK[network];
+        providerEngine.addProvider(new RPCSubprovider(rpcUrl));
+        // // Start the Provider Engine
+        providerEngine.start();
+        return providerEngine;
+    },
+};

yarn.lock

@@ -1900,10 +1900,6 @@ aes-js@^0.2.3:
   version "0.2.4"
   resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-0.2.4.tgz#94b881ab717286d015fa219e08fb66709dda5a3d"
 
-aes-js@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.npmjs.org/aes-js/-/aes-js-3.1.1.tgz#89fd1f94ae51b4c72d62466adc1a7323ff52f072"
-
 agent-base@4, agent-base@^4.1.0, agent-base@~4.2.0:
   version "4.2.1"
   resolved "https://registry.yarnpkg.com/agent-base/-/agent-base-4.2.1.tgz#d89e5999f797875674c07d87f260fc41e83e8ca9"
@@ -3341,7 +3337,7 @@ bs-logger@0.x:
   dependencies:
     fast-json-stable-stringify "^2.0.0"
 
-bs58@=4.0.1, bs58@^4.0.0:
+bs58@=4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/bs58/-/bs58-4.0.1.tgz#be161e76c354f6f788ae4071f63f34e8c4f0a42a"
   dependencies:
@@ -3364,14 +3360,6 @@ bs58check@^1.0.8:
     bs58 "^3.1.0"
     create-hash "^1.1.0"
 
-bs58check@^2.1.2:
-  version "2.1.2"
-  resolved "https://registry.npmjs.org/bs58check/-/bs58check-2.1.2.tgz#53b018291228d82a5aa08e7d796fdafda54aebfc"
-  dependencies:
-    bs58 "^4.0.0"
-    create-hash "^1.1.0"
-    safe-buffer "^5.1.2"
-
 bser@^2.0.0:
   version "2.0.0"
   resolved "https://registry.npmjs.org/bser/-/bser-2.0.0.tgz#9ac78d3ed5d915804fd87acb158bc797147a1719"
@@ -5959,19 +5947,6 @@ ethereumjs-wallet@0.6.0:
     utf8 "^2.1.1"
     uuid "^2.0.1"
 
-ethereumjs-wallet@~0.6.0:
-  version "0.6.2"
-  resolved "https://registry.npmjs.org/ethereumjs-wallet/-/ethereumjs-wallet-0.6.2.tgz#67244b6af3e8113b53d709124b25477b64aeccda"
-  dependencies:
-    aes-js "^3.1.1"
-    bs58check "^2.1.2"
-    ethereumjs-util "^5.2.0"
-    hdkey "^1.0.0"
-    safe-buffer "^5.1.2"
-    scrypt.js "^0.2.0"
-    utf8 "^3.0.0"
-    uuid "^3.3.2"
-
 ethers@~4.0.4:
   version "4.0.4"
   resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.4.tgz#d3f85e8b27f4b59537e06526439b0fb15b44dc65"
@@ -6776,7 +6751,7 @@ ganache-core@0xProject/ganache-core#monorepo-dep:
     ethereumjs-tx "0xProject/ethereumjs-tx#fake-tx-include-signature-by-default"
     ethereumjs-util "^5.2.0"
     ethereumjs-vm "2.3.5"
-    ethereumjs-wallet "~0.6.0"
+    ethereumjs-wallet "0.6.0"
     fake-merkle-patricia-tree "~1.0.1"
     heap "~0.2.6"
     js-scrypt "^0.2.0"
@@ -7501,14 +7476,6 @@ hdkey@^0.7.0, hdkey@^0.7.1:
     coinstring "^2.0.0"
     secp256k1 "^3.0.1"
 
-hdkey@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.npmjs.org/hdkey/-/hdkey-1.1.0.tgz#e74e7b01d2c47f797fa65d1d839adb7a44639f29"
-  dependencies:
-    coinstring "^2.0.0"
-    safe-buffer "^5.1.1"
-    secp256k1 "^3.0.1"
-
 he@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/he/-/he-1.1.1.tgz#93410fd21b009735151f8868c2f271f3427e23fd"
@@ -15595,10 +15562,6 @@ utf8@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/utf8/-/utf8-2.1.2.tgz#1fa0d9270e9be850d9b05027f63519bf46457d96"
 
-utf8@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.npmjs.org/utf8/-/utf8-3.0.0.tgz#f052eed1364d696e769ef058b183df88c87f69d1"
-
 util-deprecate@~1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/util-deprecate/-/util-deprecate-1.0.2.tgz#450d4dc9fa70de732762fbd2d4a28981419a0ccf"