Merge branch 'development' into feature/website/0x-org

20 files changed, 379 insertions, 153 deletions

diff --git a/packages/instant/src/components/instant_heading.tsx b/packages/instant/src/components/instant_heading.tsx
index 816cc5c33..5b1f9592d 100644
--- a/packages/instant/src/components/instant_heading.tsx
+++ b/packages/instant/src/components/instant_heading.tsx
@@ -113,20 +113,23 @@ export class InstantHeading extends React.Component<InstantHeadingProps, {}> {
     }
 
     private readonly _renderEthAmount = (): React.ReactNode => {
+        const ethAmount = format.ethBaseUnitAmount(
+            this.props.totalEthBaseUnitAmount,
+            4,
+            <AmountPlaceholder isPulsating={false} color={PLACEHOLDER_COLOR} />,
+        );
+
+        const fontSize = _.isString(ethAmount) && ethAmount.length >= 13 ? '14px' : '16px';
         return (
             <Text
-                fontSize="16px"
+                fontSize={fontSize}
                 textAlign="right"
                 width="100%"
                 fontColor={ColorOption.white}
                 fontWeight={500}
                 noWrap={true}
             >
-                {format.ethBaseUnitAmount(
-                    this.props.totalEthBaseUnitAmount,
-                    4,
-                    <AmountPlaceholder isPulsating={false} color={PLACEHOLDER_COLOR} />,
-                )}
+                {ethAmount}
             </Text>
         );
     };
diff --git a/packages/instant/src/components/order_details.tsx b/packages/instant/src/components/order_details.tsx
index a8e0e2513..9c10ef9e6 100644
--- a/packages/instant/src/components/order_details.tsx
+++ b/packages/instant/src/components/order_details.tsx
@@ -4,124 +4,227 @@ import * as _ from 'lodash';
 import * as React from 'react';
 import { oc } from 'ts-optchain';
 
-import { BIG_NUMBER_ZERO } from '../constants';
+import { BIG_NUMBER_ZERO, DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
 import { ColorOption } from '../style/theme';
+import { BaseCurrency } from '../types';
 import { format } from '../util/format';
 
 import { AmountPlaceholder } from './amount_placeholder';
+import { SectionHeader } from './section_header';
 
 import { Container } from './ui/container';
 import { Flex } from './ui/flex';
-import { Text } from './ui/text';
+import { Text, TextProps } from './ui/text';
 
 export interface OrderDetailsProps {
     buyQuoteInfo?: BuyQuoteInfo;
     selectedAssetUnitAmount?: BigNumber;
     ethUsdPrice?: BigNumber;
     isLoading: boolean;
+    assetName?: string;
+    baseCurrency: BaseCurrency;
+    onBaseCurrencySwitchEth: () => void;
+    onBaseCurrencySwitchUsd: () => void;
 }
 export class OrderDetails extends React.Component<OrderDetailsProps> {
     public render(): React.ReactNode {
-        const { buyQuoteInfo, ethUsdPrice, selectedAssetUnitAmount } = this.props;
-        const buyQuoteAccessor = oc(buyQuoteInfo);
-        const assetEthBaseUnitAmount = buyQuoteAccessor.assetEthAmount();
-        const feeEthBaseUnitAmount = buyQuoteAccessor.feeEthAmount();
-        const totalEthBaseUnitAmount = buyQuoteAccessor.totalEthAmount();
-        const pricePerTokenEth =
-            !_.isUndefined(assetEthBaseUnitAmount) &&
-            !_.isUndefined(selectedAssetUnitAmount) &&
-            !selectedAssetUnitAmount.eq(BIG_NUMBER_ZERO)
-                ? assetEthBaseUnitAmount.div(selectedAssetUnitAmount).ceil()
-                : undefined;
+        const shouldShowUsdError = this.props.baseCurrency === BaseCurrency.USD && this._hadErrorFetchingUsdPrice();
         return (
             <Container width="100%" flexGrow={1} padding="20px 20px 0px 20px">
-                <Container marginBottom="10px">
-                    <Text
-                        letterSpacing="1px"
-                        fontColor={ColorOption.primaryColor}
-                        fontWeight={600}
-                        textTransform="uppercase"
-                        fontSize="14px"
-                    >
-                        Order Details
-                    </Text>
-                </Container>
-                <EthAmountRow
-                    rowLabel="Token Price"
-                    ethAmount={pricePerTokenEth}
-                    ethUsdPrice={ethUsdPrice}
-                    isLoading={this.props.isLoading}
+                <Container marginBottom="10px">{this._renderHeader()}</Container>
+                {shouldShowUsdError ? this._renderErrorFetchingUsdPrice() : this._renderRows()}
+            </Container>
+        );
+    }
+
+    private _renderRows(): React.ReactNode {
+        const { buyQuoteInfo } = this.props;
+        return (
+            <React.Fragment>
+                <OrderDetailsRow
+                    labelText={this._assetAmountLabel()}
+                    primaryValue={this._displayAmountOrPlaceholder(buyQuoteInfo && buyQuoteInfo.assetEthAmount)}
                 />
-                <EthAmountRow
-                    rowLabel="Fee"
-                    ethAmount={feeEthBaseUnitAmount}
-                    ethUsdPrice={ethUsdPrice}
-                    isLoading={this.props.isLoading}
+                <OrderDetailsRow
+                    labelText="Fee"
+                    primaryValue={this._displayAmountOrPlaceholder(buyQuoteInfo && buyQuoteInfo.feeEthAmount)}
                 />
-                <EthAmountRow
-                    rowLabel="Total Cost"
-                    ethAmount={totalEthBaseUnitAmount}
-                    ethUsdPrice={ethUsdPrice}
-                    shouldEmphasize={true}
-                    isLoading={this.props.isLoading}
+                <OrderDetailsRow
+                    labelText="Total Cost"
+                    isLabelBold={true}
+                    primaryValue={this._displayAmountOrPlaceholder(buyQuoteInfo && buyQuoteInfo.totalEthAmount)}
+                    isPrimaryValueBold={true}
+                    secondaryValue={this._totalCostSecondaryValue()}
                 />
-            </Container>
+            </React.Fragment>
         );
     }
-}
 
-export interface EthAmountRowProps {
-    rowLabel: string;
-    ethAmount?: BigNumber;
-    isEthAmountInBaseUnits?: boolean;
-    ethUsdPrice?: BigNumber;
-    shouldEmphasize?: boolean;
-    isLoading: boolean;
+    private _renderErrorFetchingUsdPrice(): React.ReactNode {
+        return (
+            <Text>
+                There was an error fetching the USD price.
+                <Text
+                    onClick={this.props.onBaseCurrencySwitchEth}
+                    fontWeight={700}
+                    fontColor={ColorOption.primaryColor}
+                >
+                    Click here
+                </Text>
+                {' to view ETH prices'}
+            </Text>
+        );
+    }
+
+    private _hadErrorFetchingUsdPrice(): boolean {
+        return this.props.ethUsdPrice ? this.props.ethUsdPrice.equals(BIG_NUMBER_ZERO) : false;
+    }
+
+    private _totalCostSecondaryValue(): React.ReactNode {
+        const secondaryCurrency = this.props.baseCurrency === BaseCurrency.USD ? BaseCurrency.ETH : BaseCurrency.USD;
+
+        const canDisplayCurrency =
+            secondaryCurrency === BaseCurrency.ETH ||
+            (secondaryCurrency === BaseCurrency.USD && this.props.ethUsdPrice && !this._hadErrorFetchingUsdPrice());
+
+        if (this.props.buyQuoteInfo && canDisplayCurrency) {
+            return this._displayAmount(secondaryCurrency, this.props.buyQuoteInfo.totalEthAmount);
+        } else {
+            return undefined;
+        }
+    }
+
+    private _displayAmountOrPlaceholder(weiAmount?: BigNumber): React.ReactNode {
+        const { baseCurrency, isLoading } = this.props;
+
+        if (_.isUndefined(weiAmount)) {
+            return (
+                <Container opacity={0.5}>
+                    <AmountPlaceholder color={ColorOption.lightGrey} isPulsating={isLoading} />
+                </Container>
+            );
+        }
+
+        return this._displayAmount(baseCurrency, weiAmount);
+    }
+
+    private _displayAmount(currency: BaseCurrency, weiAmount: BigNumber): React.ReactNode {
+        switch (currency) {
+            case BaseCurrency.USD:
+                return format.ethBaseUnitAmountInUsd(weiAmount, this.props.ethUsdPrice, 2, '');
+            case BaseCurrency.ETH:
+                return format.ethBaseUnitAmount(weiAmount, 4, '');
+        }
+    }
+
+    private _assetAmountLabel(): React.ReactNode {
+        const { assetName, baseCurrency } = this.props;
+        const numTokens = this.props.selectedAssetUnitAmount;
+
+        // Display as 0 if we have a selected asset
+        const displayNumTokens =
+            assetName && assetName !== DEFAULT_UNKOWN_ASSET_NAME && _.isUndefined(numTokens)
+                ? new BigNumber(0)
+                : numTokens;
+        if (!_.isUndefined(displayNumTokens)) {
+            let numTokensWithSymbol: React.ReactNode = displayNumTokens.toString();
+            if (assetName) {
+                numTokensWithSymbol += ` ${assetName}`;
+            }
+            const pricePerTokenWei = this._pricePerTokenWei();
+            if (pricePerTokenWei) {
+                const atPriceDisplay = (
+                    <Text fontColor={ColorOption.lightGrey}>
+                        @ {this._displayAmount(baseCurrency, pricePerTokenWei)}
+                    </Text>
+                );
+                numTokensWithSymbol = (
+                    <React.Fragment>
+                        {numTokensWithSymbol} {atPriceDisplay}
+                    </React.Fragment>
+                );
+            }
+            return numTokensWithSymbol;
+        }
+        return 'Token Amount';
+    }
+
+    private _pricePerTokenWei(): BigNumber | undefined {
+        const buyQuoteAccessor = oc(this.props.buyQuoteInfo);
+        const assetTotalInWei = buyQuoteAccessor.assetEthAmount();
+        const selectedAssetUnitAmount = this.props.selectedAssetUnitAmount;
+        return !_.isUndefined(assetTotalInWei) &&
+            !_.isUndefined(selectedAssetUnitAmount) &&
+            !selectedAssetUnitAmount.eq(BIG_NUMBER_ZERO)
+            ? assetTotalInWei.div(selectedAssetUnitAmount).ceil()
+            : undefined;
+    }
+
+    private _baseCurrencyChoice(choice: BaseCurrency): React.ReactNode {
+        const onClick =
+            choice === BaseCurrency.ETH ? this.props.onBaseCurrencySwitchEth : this.props.onBaseCurrencySwitchUsd;
+        const isSelected = this.props.baseCurrency === choice;
+
+        const textStyle: TextProps = { onClick, fontSize: '12px' };
+        if (isSelected) {
+            textStyle.fontColor = ColorOption.primaryColor;
+            textStyle.fontWeight = 700;
+        } else {
+            textStyle.fontColor = ColorOption.lightGrey;
+        }
+        return <Text {...textStyle}>{choice}</Text>;
+    }
+
+    private _renderHeader(): React.ReactNode {
+        return (
+            <Flex justify="space-between">
+                <SectionHeader>Order Details</SectionHeader>
+                <Container>
+                    {this._baseCurrencyChoice(BaseCurrency.ETH)}
+                    <Container marginLeft="5px" marginRight="5px" display="inline">
+                        <Text fontSize="12px" fontColor={ColorOption.feintGrey}>
+                            /
+                        </Text>
+                    </Container>
+                    {this._baseCurrencyChoice(BaseCurrency.USD)}
+                </Container>
+            </Flex>
+        );
+    }
 }
 
-export class EthAmountRow extends React.Component<EthAmountRowProps> {
-    public static defaultProps = {
-        shouldEmphasize: false,
-        isEthAmountInBaseUnits: true,
-    };
+export interface OrderDetailsRowProps {
+    labelText: React.ReactNode;
+    isLabelBold?: boolean;
+    isPrimaryValueBold?: boolean;
+    primaryValue: React.ReactNode;
+    secondaryValue?: React.ReactNode;
+}
+export class OrderDetailsRow extends React.Component<OrderDetailsRowProps, {}> {
     public render(): React.ReactNode {
-        const { rowLabel, ethAmount, isEthAmountInBaseUnits, shouldEmphasize, isLoading } = this.props;
-
-        const fontWeight = shouldEmphasize ? 700 : 400;
-        const ethFormatter = isEthAmountInBaseUnits ? format.ethBaseUnitAmount : format.ethUnitAmount;
         return (
             <Container padding="10px 0px" borderTop="1px dashed" borderColor={ColorOption.feintGrey}>
                 <Flex justify="space-between">
-                    <Text fontWeight={fontWeight} fontColor={ColorOption.grey}>
-                        {rowLabel}
+                    <Text fontWeight={this.props.isLabelBold ? 700 : 400} fontColor={ColorOption.grey}>
+                        {this.props.labelText}
                     </Text>
-                    <Container>
-                        {this._renderUsdSection()}
-                        <Text fontWeight={fontWeight} fontColor={ColorOption.grey}>
-                            {ethFormatter(
-                                ethAmount,
-                                4,
-                                <Container opacity={0.5}>
-                                    <AmountPlaceholder color={ColorOption.lightGrey} isPulsating={isLoading} />
-                                </Container>,
-                            )}
-                        </Text>
-                    </Container>
+                    <Container>{this._renderValues()}</Container>
                 </Flex>
             </Container>
         );
     }
-    private _renderUsdSection(): React.ReactNode {
-        const usdFormatter = this.props.isEthAmountInBaseUnits
-            ? format.ethBaseUnitAmountInUsd
-            : format.ethUnitAmountInUsd;
-        const shouldHideUsdPriceSection = _.isUndefined(this.props.ethUsdPrice) || _.isUndefined(this.props.ethAmount);
-        return shouldHideUsdPriceSection ? null : (
+
+    private _renderValues(): React.ReactNode {
+        const secondaryValueNode: React.ReactNode = this.props.secondaryValue && (
             <Container marginRight="3px" display="inline-block">
-                <Text fontColor={ColorOption.lightGrey}>
-                    ({usdFormatter(this.props.ethAmount, this.props.ethUsdPrice)})
-                </Text>
+                <Text fontColor={ColorOption.lightGrey}>({this.props.secondaryValue})</Text>
             </Container>
         );
+        return (
+            <React.Fragment>
+                {secondaryValueNode}
+                <Text fontWeight={this.props.isPrimaryValueBold ? 700 : 400}>{this.props.primaryValue}</Text>
+            </React.Fragment>
+        );
     }
 }
diff --git a/packages/instant/src/components/payment_method.tsx b/packages/instant/src/components/payment_method.tsx
index 7c93f1d1c..abadf4bd6 100644
--- a/packages/instant/src/components/payment_method.tsx
+++ b/packages/instant/src/components/payment_method.tsx
@@ -8,6 +8,7 @@ import { envUtil } from '../util/env';
 import { CoinbaseWalletLogo } from './coinbase_wallet_logo';
 import { MetaMaskLogo } from './meta_mask_logo';
 import { PaymentMethodDropdown } from './payment_method_dropdown';
+import { SectionHeader } from './section_header';
 import { Circle } from './ui/circle';
 import { Container } from './ui/container';
 import { Flex } from './ui/flex';
@@ -29,15 +30,7 @@ export class PaymentMethod extends React.Component<PaymentMethodProps> {
             <Container width="100%" height="120px" padding="20px 20px 0px 20px">
                 <Container marginBottom="12px">
                     <Flex justify="space-between">
-                        <Text
-                            letterSpacing="1px"
-                            fontColor={ColorOption.primaryColor}
-                            fontWeight={600}
-                            textTransform="uppercase"
-                            fontSize="14px"
-                        >
-                            {this._renderTitleText()}
-                        </Text>
+                        <SectionHeader>{this._renderTitleText()}</SectionHeader>
                         {this._renderTitleLabel()}
                     </Flex>
                 </Container>
diff --git a/packages/instant/src/components/section_header.tsx b/packages/instant/src/components/section_header.tsx
new file mode 100644
index 000000000..d0974ebdc
--- /dev/null
+++ b/packages/instant/src/components/section_header.tsx
@@ -0,0 +1,20 @@
+import * as React from 'react';
+
+import { ColorOption } from '../style/theme';
+
+import { Text } from './ui/text';
+
+export interface SectionHeaderProps {}
+export const SectionHeader: React.StatelessComponent<SectionHeaderProps> = props => {
+    return (
+        <Text
+            letterSpacing="1px"
+            fontColor={ColorOption.primaryColor}
+            fontWeight={600}
+            textTransform="uppercase"
+            fontSize="12px"
+        >
+            {props.children}
+        </Text>
+    );
+};
diff --git a/packages/instant/src/components/zero_ex_instant_provider.tsx b/packages/instant/src/components/zero_ex_instant_provider.tsx
index 204115fa9..2de327cd7 100644
--- a/packages/instant/src/components/zero_ex_instant_provider.tsx
+++ b/packages/instant/src/components/zero_ex_instant_provider.tsx
@@ -122,6 +122,7 @@ export class ZeroExInstantProvider extends React.Component<ZeroExInstantProvider
                 window,
                 state.selectedAsset,
                 this.props.affiliateInfo,
+                state.baseCurrency,
             ),
         );
         analytics.trackInstantOpened();
diff --git a/packages/instant/src/constants.ts b/packages/instant/src/constants.ts
index f83eb4ac7..975dfcbea 100644
--- a/packages/instant/src/constants.ts
+++ b/packages/instant/src/constants.ts
@@ -17,6 +17,7 @@ export const ONE_MINUTE_MS = ONE_SECOND_MS * 60;
 export const GIT_SHA = process.env.GIT_SHA;
 export const NODE_ENV = process.env.NODE_ENV;
 export const NPM_PACKAGE_VERSION = process.env.NPM_PACKAGE_VERSION;
+export const DEFAULT_UNKOWN_ASSET_NAME = '???';
 export const ACCOUNT_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 5;
 export const BUY_QUOTE_UPDATE_INTERVAL_TIME_MS = ONE_SECOND_MS * 15;
 export const DEFAULT_GAS_PRICE = GWEI_IN_WEI.mul(6);
diff --git a/packages/instant/src/containers/latest_buy_quote_order_details.ts b/packages/instant/src/containers/latest_buy_quote_order_details.ts
index 5dfe535e7..148735c47 100644
--- a/packages/instant/src/containers/latest_buy_quote_order_details.ts
+++ b/packages/instant/src/containers/latest_buy_quote_order_details.ts
@@ -1,32 +1,41 @@
-import { BuyQuoteInfo } from '@0x/asset-buyer';
-import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 import * as React from 'react';
 import { connect } from 'react-redux';
+import { Dispatch } from 'redux';
 import { oc } from 'ts-optchain';
 
+import { Action, actions } from '../redux/actions';
 import { State } from '../redux/reducer';
 
-import { OrderDetails } from '../components/order_details';
-import { AsyncProcessState } from '../types';
+import { OrderDetails, OrderDetailsProps } from '../components/order_details';
+import { AsyncProcessState, BaseCurrency, Omit } from '../types';
+import { assetUtils } from '../util/asset';
 
-export interface LatestBuyQuoteOrderDetailsProps {}
-
-interface ConnectedState {
-    buyQuoteInfo?: BuyQuoteInfo;
-    selectedAssetUnitAmount?: BigNumber;
-    ethUsdPrice?: BigNumber;
-    isLoading: boolean;
-}
+type DispatchProperties = 'onBaseCurrencySwitchEth' | 'onBaseCurrencySwitchUsd';
 
+interface ConnectedState extends Omit<OrderDetailsProps, DispatchProperties> {}
 const mapStateToProps = (state: State, _ownProps: LatestBuyQuoteOrderDetailsProps): ConnectedState => ({
     // use the worst case quote info
     buyQuoteInfo: oc(state).latestBuyQuote.worstCaseQuoteInfo(),
     selectedAssetUnitAmount: state.selectedAssetUnitAmount,
     ethUsdPrice: state.ethUsdPrice,
     isLoading: state.quoteRequestState === AsyncProcessState.Pending,
+    assetName: assetUtils.bestNameForAsset(state.selectedAsset),
+    baseCurrency: state.baseCurrency,
 });
 
+interface ConnectedDispatch extends Pick<OrderDetailsProps, DispatchProperties> {}
+const mapDispatchToProps = (dispatch: Dispatch<Action>): ConnectedDispatch => ({
+    onBaseCurrencySwitchEth: () => {
+        dispatch(actions.updateBaseCurrency(BaseCurrency.ETH));
+    },
+    onBaseCurrencySwitchUsd: () => {
+        dispatch(actions.updateBaseCurrency(BaseCurrency.USD));
+    },
+});
+
+export interface LatestBuyQuoteOrderDetailsProps {}
 export const LatestBuyQuoteOrderDetails: React.ComponentClass<LatestBuyQuoteOrderDetailsProps> = connect(
     mapStateToProps,
+    mapDispatchToProps,
 )(OrderDetails);
diff --git a/packages/instant/src/redux/actions.ts b/packages/instant/src/redux/actions.ts
index 77e3dec12..9d7a61fc7 100644
--- a/packages/instant/src/redux/actions.ts
+++ b/packages/instant/src/redux/actions.ts
@@ -2,7 +2,7 @@ import { BuyQuote } from '@0x/asset-buyer';
 import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';
 
-import { ActionsUnion, AddressAndEthBalanceInWei, Asset, StandardSlidingPanelContent } from '../types';
+import { ActionsUnion, AddressAndEthBalanceInWei, Asset, BaseCurrency, StandardSlidingPanelContent } from '../types';
 
 export interface PlainAction<T extends string> {
     type: T;
@@ -43,6 +43,7 @@ export enum ActionTypes {
     RESET_AMOUNT = 'RESET_AMOUNT',
     OPEN_STANDARD_SLIDING_PANEL = 'OPEN_STANDARD_SLIDING_PANEL',
     CLOSE_STANDARD_SLIDING_PANEL = 'CLOSE_STANDARD_SLIDING_PANEL',
+    UPDATE_BASE_CURRENCY = 'UPDATE_BASE_CURRENCY',
 }
 
 export const actions = {
@@ -72,4 +73,5 @@ export const actions = {
     openStandardSlidingPanel: (content: StandardSlidingPanelContent) =>
         createAction(ActionTypes.OPEN_STANDARD_SLIDING_PANEL, content),
     closeStandardSlidingPanel: () => createAction(ActionTypes.CLOSE_STANDARD_SLIDING_PANEL),
+    updateBaseCurrency: (baseCurrency: BaseCurrency) => createAction(ActionTypes.UPDATE_BASE_CURRENCY, baseCurrency),
 };
diff --git a/packages/instant/src/redux/analytics_middleware.ts b/packages/instant/src/redux/analytics_middleware.ts
index 3f7a51707..a86a16b1a 100644
--- a/packages/instant/src/redux/analytics_middleware.ts
+++ b/packages/instant/src/redux/analytics_middleware.ts
@@ -99,6 +99,9 @@ export const analyticsMiddleware: Middleware = store => next => middlewareAction
                 analytics.trackInstallWalletModalClosed();
             }
             break;
+        case ActionTypes.UPDATE_BASE_CURRENCY:
+            analytics.trackBaseCurrencyChanged(curState.baseCurrency);
+            analytics.addEventProperties({ baseCurrency: curState.baseCurrency });
     }
 
     return nextAction;
diff --git a/packages/instant/src/redux/async_data.ts b/packages/instant/src/redux/async_data.ts
index 932eb93e9..884ab103d 100644
--- a/packages/instant/src/redux/async_data.ts
+++ b/packages/instant/src/redux/async_data.ts
@@ -4,7 +4,7 @@ import * as _ from 'lodash';
 import { Dispatch } from 'redux';
 
 import { BIG_NUMBER_ZERO } from '../constants';
-import { AccountState, ERC20Asset, OrderProcessState, ProviderState, QuoteFetchOrigin } from '../types';
+import { AccountState, BaseCurrency, ERC20Asset, OrderProcessState, ProviderState, QuoteFetchOrigin } from '../types';
 import { analytics } from '../util/analytics';
 import { assetUtils } from '../util/asset';
 import { buyQuoteUpdater } from '../util/buy_quote_updater';
@@ -24,7 +24,9 @@ export const asyncData = {
             const errorMessage = 'Error fetching ETH/USD price';
             errorFlasher.flashNewErrorMessage(dispatch, errorMessage);
             dispatch(actions.updateEthUsdPrice(BIG_NUMBER_ZERO));
+            dispatch(actions.updateBaseCurrency(BaseCurrency.ETH));
             errorReporter.report(e);
+            analytics.trackUsdPriceFailed();
         }
     },
     fetchAvailableAssetDatasAndDispatchToStore: async (state: State, dispatch: Dispatch) => {
diff --git a/packages/instant/src/redux/reducer.ts b/packages/instant/src/redux/reducer.ts
index a9a407b7d..8c13c9c72 100644
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -14,6 +14,7 @@ import {
     Asset,
     AssetMetaData,
     AsyncProcessState,
+    BaseCurrency,
     DisplayStatus,
     Network,
     OrderProcessState,
@@ -33,6 +34,7 @@ export interface DefaultState {
     latestErrorDisplayStatus: DisplayStatus;
     quoteRequestState: AsyncProcessState;
     standardSlidingPanelSettings: StandardSlidingPanelSettings;
+    baseCurrency: BaseCurrency;
 }
 
 // State that is required but needs to be derived from the props
@@ -64,6 +66,7 @@ export const DEFAULT_STATE: DefaultState = {
         animationState: 'none',
         content: StandardSlidingPanelContent.None,
     },
+    baseCurrency: BaseCurrency.USD,
 };
 
 export const createReducer = (initialState: State) => {
@@ -243,6 +246,11 @@ export const createReducer = (initialState: State) => {
                         animationState: 'slidOut',
                     },
                 };
+            case ActionTypes.UPDATE_BASE_CURRENCY:
+                return {
+                    ...state,
+                    baseCurrency: action.data,
+                };
             default:
                 return state;
         }
diff --git a/packages/instant/src/types.ts b/packages/instant/src/types.ts
index 1c7490e63..e7c920f36 100644
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -26,6 +26,11 @@ export enum QuoteFetchOrigin {
     Heartbeat = 'Heartbeat',
 }
 
+export enum BaseCurrency {
+    USD = 'USD',
+    ETH = 'ETH',
+}
+
 export interface SimulatedProgress {
     startTimeUnix: number;
     expectedEndTimeUnix: number;
diff --git a/packages/instant/src/util/analytics.ts b/packages/instant/src/util/analytics.ts
index e6128f857..6c63907dc 100644
--- a/packages/instant/src/util/analytics.ts
+++ b/packages/instant/src/util/analytics.ts
@@ -6,6 +6,7 @@ import { GIT_SHA, HEAP_ENABLED, INSTANT_DISCHARGE_TARGET, NODE_ENV, NPM_PACKAGE_
 import {
     AffiliateInfo,
     Asset,
+    BaseCurrency,
     Network,
     OrderProcessState,
     OrderSource,
@@ -37,6 +38,7 @@ enum EventNames {
     ACCOUNT_UNLOCK_REQUESTED = 'Account - Unlock Requested',
     ACCOUNT_UNLOCK_DENIED = 'Account - Unlock Denied',
     ACCOUNT_ADDRESS_CHANGED = 'Account - Address Changed',
+    BASE_CURRENCY_CHANGED = 'Base Currency - Changed',
     PAYMENT_METHOD_DROPDOWN_OPENED = 'Payment Method - Dropdown Opened',
     PAYMENT_METHOD_OPENED_ETHERSCAN = 'Payment Method - Opened Etherscan',
     PAYMENT_METHOD_COPIED_ADDRESS = 'Payment Method - Copied Address',
@@ -47,6 +49,7 @@ enum EventNames {
     BUY_TX_SUBMITTED = 'Buy - Tx Submitted',
     BUY_TX_SUCCEEDED = 'Buy - Tx Succeeded',
     BUY_TX_FAILED = 'Buy - Tx Failed',
+    USD_PRICE_FETCH_FAILED = 'USD Price - Fetch Failed',
     INSTALL_WALLET_CLICKED = 'Install Wallet - Clicked',
     INSTALL_WALLET_MODAL_OPENED = 'Install Wallet - Modal - Opened',
     INSTALL_WALLET_MODAL_CLICKED_EXPLANATION = 'Install Wallet - Modal - Clicked Explanation',
@@ -118,6 +121,7 @@ export interface AnalyticsEventOptions {
     selectedAssetSymbol?: string;
     selectedAssetData?: string;
     selectedAssetDecimals?: number;
+    baseCurrency?: string;
 }
 export enum TokenSelectorClosedVia {
     ClickedX = 'Clicked X',
@@ -141,6 +145,7 @@ export const analytics = {
         window: Window,
         selectedAsset?: Asset,
         affiliateInfo?: AffiliateInfo,
+        baseCurrency?: BaseCurrency,
     ): AnalyticsEventOptions => {
         const affiliateAddress = affiliateInfo ? affiliateInfo.feeRecipient : 'none';
         const affiliateFeePercent = affiliateInfo ? parseFloat(affiliateInfo.feePercentage.toFixed(4)) : 0;
@@ -159,6 +164,7 @@ export const analytics = {
             selectedAssetName: selectedAsset ? selectedAsset.metaData.name : 'none',
             selectedAssetData: selectedAsset ? selectedAsset.assetData : 'none',
             instantEnvironment: INSTANT_DISCHARGE_TARGET || `Local ${NODE_ENV}`,
+            baseCurrency,
         };
         return eventOptions;
     },
@@ -170,6 +176,8 @@ export const analytics = {
     trackAccountUnlockDenied: trackingEventFnWithoutPayload(EventNames.ACCOUNT_UNLOCK_DENIED),
     trackAccountAddressChanged: (address: string) =>
         trackingEventFnWithPayload(EventNames.ACCOUNT_ADDRESS_CHANGED)({ address }),
+    trackBaseCurrencyChanged: (currencyChangedTo: BaseCurrency) =>
+        trackingEventFnWithPayload(EventNames.BASE_CURRENCY_CHANGED)({ currencyChangedTo }),
     trackPaymentMethodDropdownOpened: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_DROPDOWN_OPENED),
     trackPaymentMethodOpenedEtherscan: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_OPENED_ETHERSCAN),
     trackPaymentMethodCopiedAddress: trackingEventFnWithoutPayload(EventNames.PAYMENT_METHOD_COPIED_ADDRESS),
@@ -230,4 +238,5 @@ export const analytics = {
             fetchOrigin,
         });
     },
+    trackUsdPriceFailed: trackingEventFnWithoutPayload(EventNames.USD_PRICE_FETCH_FAILED),
 };
diff --git a/packages/instant/src/util/asset.ts b/packages/instant/src/util/asset.ts
index 13f84ef74..faaeb7c22 100644
--- a/packages/instant/src/util/asset.ts
+++ b/packages/instant/src/util/asset.ts
@@ -2,6 +2,7 @@ import { AssetBuyerError } from '@0x/asset-buyer';
 import { AssetProxyId, ObjectMap } from '@0x/types';
 import * as _ from 'lodash';
 
+import { DEFAULT_UNKOWN_ASSET_NAME } from '../constants';
 import { assetDataNetworkMapping } from '../data/asset_data_network_mapping';
 import { Asset, AssetMetaData, ERC20Asset, Network, ZeroExInstantError } from '../types';
 
@@ -71,7 +72,7 @@ export const assetUtils = {
         }
         return metaData;
     },
-    bestNameForAsset: (asset?: Asset, defaultName: string = '???'): string => {
+    bestNameForAsset: (asset?: Asset, defaultName: string = DEFAULT_UNKOWN_ASSET_NAME): string => {
         if (_.isUndefined(asset)) {
             return defaultName;
         }
diff --git a/packages/instant/src/util/format.ts b/packages/instant/src/util/format.ts
index e9c432b2f..4adb63e21 100644
--- a/packages/instant/src/util/format.ts
+++ b/packages/instant/src/util/format.ts
@@ -2,7 +2,7 @@ import { BigNumber } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import * as _ from 'lodash';
 
-import { ETH_DECIMALS } from '../constants';
+import { BIG_NUMBER_ZERO, ETH_DECIMALS } from '../constants';
 
 export const format = {
     ethBaseUnitAmount: (
@@ -20,24 +20,38 @@ export const format = {
         ethUnitAmount?: BigNumber,
         decimalPlaces: number = 4,
         defaultText: React.ReactNode = '0 ETH',
+        minUnitAmountToDisplay: BigNumber = new BigNumber('0.00001'),
     ): React.ReactNode => {
         if (_.isUndefined(ethUnitAmount)) {
             return defaultText;
         }
-        const roundedAmount = ethUnitAmount.round(decimalPlaces).toDigits(decimalPlaces);
-        return `${roundedAmount} ETH`;
+        let roundedAmount = ethUnitAmount.round(decimalPlaces).toDigits(decimalPlaces);
+
+        if (roundedAmount.eq(BIG_NUMBER_ZERO) && ethUnitAmount.greaterThan(BIG_NUMBER_ZERO)) {
+            // Sometimes for small ETH amounts (i.e. 0.000045) the amount rounded to 4 decimalPlaces is 0
+            // If that is the case, show to 1 significant digit
+            roundedAmount = new BigNumber(ethUnitAmount.toPrecision(1));
+        }
+
+        const displayAmount =
+            roundedAmount.greaterThan(BIG_NUMBER_ZERO) && roundedAmount.lessThan(minUnitAmountToDisplay)
+                ? `< ${minUnitAmountToDisplay.toString()}`
+                : roundedAmount.toString();
+
+        return `${displayAmount} ETH`;
     },
     ethBaseUnitAmountInUsd: (
         ethBaseUnitAmount?: BigNumber,
         ethUsdPrice?: BigNumber,
         decimalPlaces: number = 2,
         defaultText: React.ReactNode = '$0.00',
+        minUnitAmountToDisplay: BigNumber = new BigNumber('0.00001'),
     ): React.ReactNode => {
         if (_.isUndefined(ethBaseUnitAmount) || _.isUndefined(ethUsdPrice)) {
             return defaultText;
         }
         const ethUnitAmount = Web3Wrapper.toUnitAmount(ethBaseUnitAmount, ETH_DECIMALS);
-        return format.ethUnitAmountInUsd(ethUnitAmount, ethUsdPrice, decimalPlaces);
+        return format.ethUnitAmountInUsd(ethUnitAmount, ethUsdPrice, decimalPlaces, minUnitAmountToDisplay);
     },
     ethUnitAmountInUsd: (
         ethUnitAmount?: BigNumber,
@@ -48,7 +62,13 @@ export const format = {
         if (_.isUndefined(ethUnitAmount) || _.isUndefined(ethUsdPrice)) {
             return defaultText;
         }
-        return `$${ethUnitAmount.mul(ethUsdPrice).toFixed(decimalPlaces)}`;
+        const rawUsdPrice = ethUnitAmount.mul(ethUsdPrice);
+        const roundedUsdPrice = rawUsdPrice.toFixed(decimalPlaces);
+        if (roundedUsdPrice === '0.00' && rawUsdPrice.gt(BIG_NUMBER_ZERO)) {
+            return '<$0.01';
+        } else {
+            return `$${roundedUsdPrice}`;
+        }
     },
     ethAddress: (address: string): string => {
         return `0x${address.slice(2, 7)}…${address.slice(-5)}`;
diff --git a/packages/instant/test/util/format.test.ts b/packages/instant/test/util/format.test.ts
index fe0a63e6e..38bf356ec 100644
--- a/packages/instant/test/util/format.test.ts
+++ b/packages/instant/test/util/format.test.ts
@@ -41,6 +41,18 @@ describe('format', () => {
         it('converts BigNumber(5.3014059295032) to the string `5.301 ETH`', () => {
             expect(format.ethUnitAmount(BIG_NUMBER_IRRATIONAL)).toBe('5.301 ETH');
         });
+        it('shows 1 significant digit when rounded amount would be 0', () => {
+            expect(format.ethUnitAmount(new BigNumber(0.00003))).toBe('0.00003 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0.000034))).toBe('0.00003 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0.000035))).toBe('0.00004 ETH');
+        });
+        it('shows < 0.00001 when hits threshold', () => {
+            expect(format.ethUnitAmount(new BigNumber(0.000011))).toBe('0.00001 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0.00001))).toBe('0.00001 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0.000009))).toBe('< 0.00001 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0.0000000009))).toBe('< 0.00001 ETH');
+            expect(format.ethUnitAmount(new BigNumber(0))).toBe('0 ETH');
+        });
         it('returns defaultText param when ethUnitAmount is not defined', () => {
             const defaultText = 'defaultText';
             expect(format.ethUnitAmount(undefined, 4, defaultText)).toBe(defaultText);
@@ -86,6 +98,12 @@ describe('format', () => {
         it('correctly formats 5.3014059295032 ETH to usd according to some price', () => {
             expect(format.ethUnitAmountInUsd(BIG_NUMBER_IRRATIONAL, BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$13.43');
         });
+        it('correctly formats amount that is less than 1 cent', () => {
+            expect(format.ethUnitAmountInUsd(new BigNumber(0.000001), BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('<$0.01');
+        });
+        it('correctly formats exactly 1 cent', () => {
+            expect(format.ethUnitAmountInUsd(new BigNumber(0.0039), BIG_NUMBER_FAKE_ETH_USD_PRICE)).toBe('$0.01');
+        });
         it('returns defaultText param when ethUnitAmountInUsd or ethUsdPrice is not defined', () => {
             const defaultText = 'defaultText';
             expect(format.ethUnitAmountInUsd(undefined, undefined, 2, defaultText)).toBe(defaultText);
diff --git a/packages/pipeline/src/scripts/pull_erc20_events.ts b/packages/pipeline/src/scripts/pull_erc20_events.ts
index 0ad12c97a..bd520c610 100644
--- a/packages/pipeline/src/scripts/pull_erc20_events.ts
+++ b/packages/pipeline/src/scripts/pull_erc20_events.ts
@@ -1,10 +1,10 @@
-// tslint:disable:no-console
 import { getContractAddressesForNetworkOrThrow } from '@0x/contract-addresses';
 import { web3Factory } from '@0x/dev-utils';
 import { Web3ProviderEngine } from '@0x/subproviders';
+import { logUtils } from '@0x/utils';
 import { Web3Wrapper } from '@0x/web3-wrapper';
 import 'reflect-metadata';
-import { Connection, ConnectionOptions, createConnection, Repository } from 'typeorm';
+import { Connection, ConnectionOptions, createConnection } from 'typeorm';
 
 import { ERC20EventsSource } from '../data_sources/contract-wrappers/erc20_events';
 import { ERC20ApprovalEvent } from '../entities';
@@ -16,33 +16,63 @@ const NETWORK_ID = 1;
 const START_BLOCK_OFFSET = 100; // Number of blocks before the last known block to consider when updating fill events.
 const BATCH_SAVE_SIZE = 1000; // Number of events to save at once.
 const BLOCK_FINALITY_THRESHOLD = 10; // When to consider blocks as final. Used to compute default endBlock.
-const WETH_START_BLOCK = 4719568; // Block number when the WETH contract was deployed.
 
 let connection: Connection;
 
+interface Token {
+    // name is used for logging only.
+    name: string;
+    address: string;
+    defaultStartBlock: number;
+}
+
+const tokensToGetApprovalEvents: Token[] = [
+    {
+        name: 'WETH',
+        address: getContractAddressesForNetworkOrThrow(NETWORK_ID).etherToken,
+        defaultStartBlock: 4719568, // Block when the WETH contract was deployed.
+    },
+    {
+        name: 'ZRX',
+        address: getContractAddressesForNetworkOrThrow(NETWORK_ID).zrxToken,
+        defaultStartBlock: 4145415, // Block when the ZRX contract was deployed.
+    },
+    {
+        name: 'DAI',
+        address: '0x89d24a6b4ccb1b6faa2625fe562bdd9a23260359',
+        defaultStartBlock: 4752008, // Block when the DAI contract was deployed.
+    },
+];
+
 (async () => {
     connection = await createConnection(ormConfig as ConnectionOptions);
     const provider = web3Factory.getRpcProvider({
         rpcUrl: INFURA_ROOT_URL,
     });
     const endBlock = await calculateEndBlockAsync(provider);
-    await getAndSaveWETHApprovalEventsAsync(provider, endBlock);
+    for (const token of tokensToGetApprovalEvents) {
+        await getAndSaveApprovalEventsAsync(provider, token, endBlock);
+    }
     process.exit(0);
 })().catch(handleError);
 
-async function getAndSaveWETHApprovalEventsAsync(provider: Web3ProviderEngine, endBlock: number): Promise<void> {
-    console.log('Checking existing approval events...');
+async function getAndSaveApprovalEventsAsync(
+    provider: Web3ProviderEngine,
+    token: Token,
+    endBlock: number,
+): Promise<void> {
+    logUtils.log(`Getting approval events for ${token.name}...`);
+    logUtils.log('Checking existing approval events...');
     const repository = connection.getRepository(ERC20ApprovalEvent);
-    const startBlock = (await getStartBlockAsync(repository)) || WETH_START_BLOCK;
+    const startBlock = (await getStartBlockAsync(token)) || token.defaultStartBlock;
 
-    console.log(`Getting WETH approval events starting at ${startBlock}...`);
-    const wethTokenAddress = getContractAddressesForNetworkOrThrow(NETWORK_ID).etherToken;
-    const eventsSource = new ERC20EventsSource(provider, NETWORK_ID, wethTokenAddress);
+    logUtils.log(`Getting approval events starting at ${startBlock}...`);
+    const eventsSource = new ERC20EventsSource(provider, NETWORK_ID, token.address);
     const eventLogs = await eventsSource.getApprovalEventsAsync(startBlock, endBlock);
 
-    console.log(`Parsing ${eventLogs.length} WETH approval events...`);
+    logUtils.log(`Parsing ${eventLogs.length} approval events...`);
     const events = parseERC20ApprovalEvents(eventLogs);
-    console.log(`Retrieved and parsed ${events.length} total WETH approval events.`);
+    logUtils.log(`Retrieved and parsed ${events.length} total approval events.`);
     await repository.save(events, { chunk: Math.ceil(events.length / BATCH_SAVE_SIZE) });
 }
 
@@ -52,15 +82,15 @@ async function calculateEndBlockAsync(provider: Web3ProviderEngine): Promise<num
     return currentBlock - BLOCK_FINALITY_THRESHOLD;
 }
 
-async function getStartBlockAsync(repository: Repository<ERC20ApprovalEvent>): Promise<number | null> {
-    const fillEventCount = await repository.count();
-    if (fillEventCount === 0) {
-        console.log(`No existing approval events found.`);
-        return null;
-    }
+async function getStartBlockAsync(token: Token): Promise<number | null> {
     const queryResult = await connection.query(
-        `SELECT block_number FROM raw.erc20_approval_events ORDER BY block_number DESC LIMIT 1`,
+        `SELECT block_number FROM raw.erc20_approval_events WHERE token_address = $1 ORDER BY block_number DESC LIMIT 1`,
+        [token.address],
     );
+    if (queryResult.length === 0) {
+        logUtils.log(`No existing approval events found for ${token.name}.`);
+        return null;
+    }
     const lastKnownBlock = queryResult[0].block_number;
     return lastKnownBlock - START_BLOCK_OFFSET;
 }
diff --git a/packages/pipeline/src/scripts/pull_missing_blocks.ts b/packages/pipeline/src/scripts/pull_missing_blocks.ts
index a5203824c..bb5385126 100644
--- a/packages/pipeline/src/scripts/pull_missing_blocks.ts
+++ b/packages/pipeline/src/scripts/pull_missing_blocks.ts
@@ -9,7 +9,7 @@ import { Web3Source } from '../data_sources/web3';
 import { Block } from '../entities';
 import * as ormConfig from '../ormconfig';
 import { parseBlock } from '../parsers/web3';
-import { EXCHANGE_START_BLOCK, handleError, INFURA_ROOT_URL } from '../utils';
+import { handleError, INFURA_ROOT_URL } from '../utils';
 
 // Number of blocks to save at once.
 const BATCH_SAVE_SIZE = 1000;
@@ -37,22 +37,19 @@ interface MissingBlocksResponse {
 
 async function getAllMissingBlocksAsync(web3Source: Web3Source): Promise<void> {
     const blocksRepository = connection.getRepository(Block);
-    let fromBlock = EXCHANGE_START_BLOCK;
     while (true) {
-        const blockNumbers = await getMissingBlockNumbersAsync(fromBlock);
+        const blockNumbers = await getMissingBlockNumbersAsync();
         if (blockNumbers.length === 0) {
             // There are no more missing blocks. We're done.
             break;
         }
         await getAndSaveBlocksAsync(web3Source, blocksRepository, blockNumbers);
-        fromBlock = Math.max(...blockNumbers) + 1;
     }
     const totalBlocks = await blocksRepository.count();
     console.log(`Done saving blocks. There are now ${totalBlocks} total blocks.`);
 }
 
-async function getMissingBlockNumbersAsync(fromBlock: number): Promise<number[]> {
-    console.log(`Checking for missing blocks starting at ${fromBlock}...`);
+async function getMissingBlockNumbersAsync(): Promise<number[]> {
     // Note(albrow): The easiest way to get all the blocks we need is to
     // consider all the events tables together in a single query. If this query
     // gets too slow, we should consider re-architecting so that we can work on
@@ -66,13 +63,12 @@ async function getMissingBlockNumbersAsync(fromBlock: number): Promise<number[]>
         )
         SELECT DISTINCT(block_number) FROM all_events
             WHERE block_number NOT IN (SELECT number FROM raw.blocks)
-                AND block_number >= $1
-            ORDER BY block_number ASC LIMIT $2`,
-        [fromBlock, MAX_BLOCKS_PER_QUERY],
+            ORDER BY block_number ASC LIMIT $1`,
+        [MAX_BLOCKS_PER_QUERY],
     )) as MissingBlocksResponse[];
     const blockNumberStrings = R.pluck('block_number', response);
     const blockNumbers = R.map(parseInt, blockNumberStrings);
-    console.log(`Found ${blockNumbers.length} missing blocks in the given range.`);
+    console.log(`Found ${blockNumbers.length} missing blocks.`);
     return blockNumbers;
 }
 
diff --git a/packages/website/ts/components/documentation/sidebar_header.tsx b/packages/website/ts/components/documentation/sidebar_header.tsx
index 9ced52c74..0ab24ab5e 100644
--- a/packages/website/ts/components/documentation/sidebar_header.tsx
+++ b/packages/website/ts/components/documentation/sidebar_header.tsx
@@ -24,7 +24,7 @@ export const SidebarHeader: React.StatelessComponent<SidebarHeaderProps> = ({
     return (
         <Container>
             <Container className="flex justify-bottom">
-                <Container className="left pl1" width="150px">
+                <Container className="col col-7 pl1">
                     <Text
                         fontColor={colors.lightLinkBlue}
                         fontSize={screenWidth === ScreenWidths.Sm ? '20px' : '22px'}
@@ -37,12 +37,14 @@ export const SidebarHeader: React.StatelessComponent<SidebarHeaderProps> = ({
                 {!_.isUndefined(docsVersion) &&
                     !_.isUndefined(availableDocVersions) &&
                     !_.isUndefined(onVersionSelected) && (
-                        <div className="right" style={{ alignSelf: 'flex-end', paddingBottom: 4 }}>
-                            <VersionDropDown
-                                selectedVersion={docsVersion}
-                                versions={availableDocVersions}
-                                onVersionSelected={onVersionSelected}
-                            />
+                        <div className="col col-5 pl1" style={{ alignSelf: 'flex-end', paddingBottom: 4 }}>
+                            <Container className="right">
+                                <VersionDropDown
+                                    selectedVersion={docsVersion}
+                                    versions={availableDocVersions}
+                                    onVersionSelected={onVersionSelected}
+                                />
+                            </Container>
                         </div>
                     )}
             </Container>
diff --git a/packages/website/ts/containers/order_watcher_documentation.ts b/packages/website/ts/containers/order_watcher_documentation.ts
index ac92e6a22..683e1fe9f 100644
--- a/packages/website/ts/containers/order_watcher_documentation.ts
+++ b/packages/website/ts/containers/order_watcher_documentation.ts
@@ -24,7 +24,7 @@ const docsInfoConfig: DocsInfoConfig = {
     id: DocPackages.OrderWatcher,
     packageName: '@0x/order-watcher',
     type: SupportedDocJson.TypeDoc,
-    displayName: 'OrderWatcher',
+    displayName: 'Order Watcher',
     packageUrl: 'https://github.com/0xProject/0x-monorepo',
     markdownMenu: {
         'getting-started': [markdownSections.introduction, markdownSections.installation],