Merge pull request #1161 from 0xProject/feature/instant/order-details-loading-state

[instant] Order details loading state
2018-10-19 12:28:52 -07:00
parent c66e2f6704 c070142dc0
commit aeb607d485
14 changed files with 206 additions and 135 deletions
--- a/packages/instant/src/components/amount_placeholder.tsx
+++ b/packages/instant/src/components/amount_placeholder.tsx
@@ -0,0 +1,32 @@
+import * as React from 'react';
+
+import { ColorOption } from '../style/theme';
+
+import { Pulse } from './animations/pulse';
+
+import { Text } from './ui';
+
+interface PlainPlaceholder {
+    color: ColorOption;
+}
+const PlainPlaceholder: React.StatelessComponent<PlainPlaceholder> = props => (
+    <Text fontWeight="bold" fontColor={props.color}>
+        &mdash;
+    </Text>
+);
+
+export interface AmountPlaceholderProps {
+    color: ColorOption;
+    isPulsating: boolean;
+}
+export const AmountPlaceholder: React.StatelessComponent<AmountPlaceholderProps> = props => {
+    if (props.isPulsating) {
+        return (
+            <Pulse>
+                <PlainPlaceholder color={props.color} />
+            </Pulse>
+        );
+    } else {
+        return <PlainPlaceholder color={props.color} />;
+    }
+};
--- a/packages/instant/src/components/animations/pulse.tsx
+++ b/packages/instant/src/components/animations/pulse.tsx
@@ -0,0 +1,15 @@
+import { keyframes, styled } from '../../style/theme';
+
+const pulsingKeyframes = keyframes`
+    0%, 100% {
+        opacity: 0.2;
+    }
+    50% {
+        opacity: 100;
+    }
+`;
+export const Pulse = styled.div`
+    animation-name: ${pulsingKeyframes}
+    animation-duration: 2s;
+    animation-iteration-count: infinite;
+`;
--- a/packages/instant/src/components/instant_heading.tsx
+++ b/packages/instant/src/components/instant_heading.tsx
@@ -7,79 +7,81 @@ import { ColorOption } from '../style/theme';
 import { AsyncProcessState } from '../types';
 import { format } from '../util/format';

+import { AmountPlaceholder } from './amount_placeholder';
 import { Container, Flex, Text } from './ui';

 export interface InstantHeadingProps {
    selectedAssetAmount?: BigNumber;
    totalEthBaseAmount?: BigNumber;
    ethUsdPrice?: BigNumber;
-    quoteState: AsyncProcessState;
+    quoteRequestState: AsyncProcessState;
 }

-const Placeholder = () => (
-    <Text fontWeight="bold" fontColor={ColorOption.white}>
-        &mdash;
-    </Text>
-);
-const displaytotalEthBaseAmount = ({
-    selectedAssetAmount,
-    totalEthBaseAmount,
-}: InstantHeadingProps): React.ReactNode => {
-    if (_.isUndefined(selectedAssetAmount)) {
-        return '0 ETH';
-    }
-    return format.ethBaseAmount(totalEthBaseAmount, 4, <Placeholder />);
-};
-
-const displayUsdAmount = ({
-    totalEthBaseAmount,
-    selectedAssetAmount,
-    ethUsdPrice,
-}: InstantHeadingProps): React.ReactNode => {
-    if (_.isUndefined(selectedAssetAmount)) {
-        return '$0.00';
-    }
-    return format.ethBaseAmountInUsd(totalEthBaseAmount, ethUsdPrice, 2, <Placeholder />);
-};
-
-const loadingOrAmount = (quoteState: AsyncProcessState, amount: React.ReactNode): React.ReactNode => {
-    if (quoteState === AsyncProcessState.PENDING) {
+const placeholderColor = ColorOption.white;
+export class InstantHeading extends React.Component<InstantHeadingProps, {}> {
+    public render(): React.ReactNode {
        return (
-            <Text fontWeight="bold" fontColor={ColorOption.white}>
-                &hellip;loading
-            </Text>
-        );
-    } else {
-        return amount;
-    }
-};
-
-export const InstantHeading: React.StatelessComponent<InstantHeadingProps> = props => (
-    <Container backgroundColor={ColorOption.primaryColor} padding="20px" width="100%" borderRadius="3px 3px 0px 0px">
-        <Container marginBottom="5px">
-            <Text
-                letterSpacing="1px"
-                fontColor={ColorOption.white}
-                opacity={0.7}
-                fontWeight={500}
-                textTransform="uppercase"
-                fontSize="12px"
+            <Container
+                backgroundColor={ColorOption.primaryColor}
+                padding="20px"
+                width="100%"
+                borderRadius="3px 3px 0px 0px"
            >
-                I want to buy
-            </Text>
-        </Container>
-        <Flex direction="row" justify="space-between">
-            <SelectedAssetAmountInput fontSize="45px" />
-            <Flex direction="column" justify="space-between">
                <Container marginBottom="5px">
-                    <Text fontSize="16px" fontColor={ColorOption.white} fontWeight={500}>
-                        {loadingOrAmount(props.quoteState, displaytotalEthBaseAmount(props))}
+                    <Text
+                        letterSpacing="1px"
+                        fontColor={ColorOption.white}
+                        opacity={0.7}
+                        fontWeight={500}
+                        textTransform="uppercase"
+                        fontSize="12px"
+                    >
+                        I want to buy
                    </Text>
                </Container>
-                <Text fontSize="16px" fontColor={ColorOption.white} opacity={0.7}>
-                    {loadingOrAmount(props.quoteState, displayUsdAmount(props))}
-                </Text>
-            </Flex>
-        </Flex>
-    </Container>
-);
+                <Flex direction="row" justify="space-between">
+                    <SelectedAssetAmountInput fontSize="45px" />
+                    <Flex direction="column" justify="space-between">
+                        <Container marginBottom="5px">{this._placeholderOrAmount(this._ethAmount)}</Container>
+                        <Container opacity={0.7}>{this._placeholderOrAmount(this._dollarAmount)}</Container>
+                    </Flex>
+                </Flex>
+            </Container>
+        );
+    }
+
+    private _placeholderOrAmount(amountFunction: () => React.ReactNode): React.ReactNode {
+        if (this.props.quoteRequestState === AsyncProcessState.PENDING) {
+            return <AmountPlaceholder isPulsating={true} color={placeholderColor} />;
+        }
+        if (_.isUndefined(this.props.selectedAssetAmount)) {
+            return <AmountPlaceholder isPulsating={false} color={placeholderColor} />;
+        }
+        return amountFunction();
+    }
+
+    private readonly _ethAmount = (): React.ReactNode => {
+        return (
+            <Text fontSize="16px" fontColor={ColorOption.white} fontWeight={500}>
+                {format.ethBaseAmount(
+                    this.props.totalEthBaseAmount,
+                    4,
+                    <AmountPlaceholder isPulsating={false} color={placeholderColor} />,
+                )}
+            </Text>
+        );
+    };
+
+    private readonly _dollarAmount = (): React.ReactNode => {
+        return (
+            <Text fontSize="16px" fontColor={ColorOption.white}>
+                {format.ethBaseAmountInUsd(
+                    this.props.totalEthBaseAmount,
+                    this.props.ethUsdPrice,
+                    2,
+                    <AmountPlaceholder isPulsating={false} color={ColorOption.white} />,
+                )}
+            </Text>
+        );
+    };
+}
--- a/packages/instant/src/components/order_details.tsx
+++ b/packages/instant/src/components/order_details.tsx
@@ -7,13 +7,14 @@ import { oc } from 'ts-optchain';
 import { ColorOption } from '../style/theme';
 import { format } from '../util/format';

+import { AmountPlaceholder } from './amount_placeholder';
 import { Container, Flex, Text } from './ui';

 export interface OrderDetailsProps {
    buyQuoteInfo?: BuyQuoteInfo;
    ethUsdPrice?: BigNumber;
+    isLoading: boolean;
 }
-
 export class OrderDetails extends React.Component<OrderDetailsProps> {
    public render(): React.ReactNode {
        const { buyQuoteInfo, ethUsdPrice } = this.props;
@@ -39,13 +40,20 @@ export class OrderDetails extends React.Component<OrderDetailsProps> {
                    ethAmount={ethAssetPrice}
                    ethUsdPrice={ethUsdPrice}
                    isEthAmountInBaseUnits={false}
+                    isLoading={this.props.isLoading}
+                />
+                <EthAmountRow
+                    rowLabel="Fee"
+                    ethAmount={ethTokenFee}
+                    ethUsdPrice={ethUsdPrice}
+                    isLoading={this.props.isLoading}
                />
-                <EthAmountRow rowLabel="Fee" ethAmount={ethTokenFee} ethUsdPrice={ethUsdPrice} />
                <EthAmountRow
                    rowLabel="Total Cost"
                    ethAmount={totalEthAmount}
                    ethUsdPrice={ethUsdPrice}
                    shouldEmphasize={true}
+                    isLoading={this.props.isLoading}
                />
            </Container>
        );
@@ -58,43 +66,50 @@ export interface EthAmountRowProps {
    isEthAmountInBaseUnits?: boolean;
    ethUsdPrice?: BigNumber;
    shouldEmphasize?: boolean;
+    isLoading: boolean;
 }

-export const EthAmountRow: React.StatelessComponent<EthAmountRowProps> = ({
-    rowLabel,
-    ethAmount,
-    isEthAmountInBaseUnits,
-    ethUsdPrice,
-    shouldEmphasize,
-}) => {
-    const fontWeight = shouldEmphasize ? 700 : 400;
-    const usdFormatter = isEthAmountInBaseUnits ? format.ethBaseAmountInUsd : format.ethUnitAmountInUsd;
-    const ethFormatter = isEthAmountInBaseUnits ? format.ethBaseAmount : format.ethUnitAmount;
-    const usdPriceSection = _.isUndefined(ethUsdPrice) ? null : (
-        <Container marginRight="3px" display="inline-block">
-            <Text fontColor={ColorOption.lightGrey}>({usdFormatter(ethAmount, ethUsdPrice)})</Text>
-        </Container>
-    );
-    return (
-        <Container padding="10px 0px" borderTop="1px dashed" borderColor={ColorOption.feintGrey}>
-            <Flex justify="space-between">
-                <Text fontWeight={fontWeight} fontColor={ColorOption.grey}>
-                    {rowLabel}
-                </Text>
-                <Container>
-                    {usdPriceSection}
+export class EthAmountRow extends React.Component<EthAmountRowProps> {
+    public static defaultProps = {
+        shouldEmphasize: false,
+        isEthAmountInBaseUnits: true,
+    };
+    public render(): React.ReactNode {
+        const { rowLabel, ethAmount, isEthAmountInBaseUnits, shouldEmphasize, isLoading } = this.props;
+
+        const fontWeight = shouldEmphasize ? 700 : 400;
+        const ethFormatter = isEthAmountInBaseUnits ? format.ethBaseAmount : format.ethUnitAmount;
+        return (
+            <Container padding="10px 0px" borderTop="1px dashed" borderColor={ColorOption.feintGrey}>
+                <Flex justify="space-between">
                    <Text fontWeight={fontWeight} fontColor={ColorOption.grey}>
-                        {ethFormatter(ethAmount)}
+                        {rowLabel}
                    </Text>
-                </Container>
-            </Flex>
-        </Container>
-    );
-};
-
-EthAmountRow.defaultProps = {
-    shouldEmphasize: false,
-    isEthAmountInBaseUnits: true,
-};
-
-EthAmountRow.displayName = 'EthAmountRow';
+                    <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>
+                </Flex>
+            </Container>
+        );
+    }
+    private _renderUsdSection(): React.ReactNode {
+        const usdFormatter = this.props.isEthAmountInBaseUnits ? format.ethBaseAmountInUsd : format.ethUnitAmountInUsd;
+        const shouldHideUsdPriceSection = _.isUndefined(this.props.ethUsdPrice) || _.isUndefined(this.props.ethAmount);
+        return shouldHideUsdPriceSection ? null : (
+            <Container marginRight="3px" display="inline-block">
+                <Text fontColor={ColorOption.lightGrey}>
+                    ({usdFormatter(this.props.ethAmount, this.props.ethUsdPrice)})
+                </Text>
+            </Container>
+        );
+    }
+}
--- a/packages/instant/src/components/ui/container.tsx
+++ b/packages/instant/src/components/ui/container.tsx
@@ -27,6 +27,7 @@ export interface ContainerProps {
    backgroundColor?: ColorOption;
    hasBoxShadow?: boolean;
    zIndex?: number;
+    opacity?: number;
 }

 const PlainContainer: React.StatelessComponent<ContainerProps> = ({ children, className }) => (
@@ -54,6 +55,7 @@ export const Container = styled(PlainContainer)`
    ${props => cssRuleIfExists(props, 'border-top')}
    ${props => cssRuleIfExists(props, 'border-bottom')}
    ${props => cssRuleIfExists(props, 'z-index')}
+    ${props => cssRuleIfExists(props, 'opacity')}
    ${props => (props.hasBoxShadow ? `box-shadow: 0px 2px 10px rgba(0, 0, 0, 0.1)` : '')};
    background-color: ${props => (props.backgroundColor ? props.theme[props.backgroundColor] : 'none')};
    border-color: ${props => (props.borderColor ? props.theme[props.borderColor] : 'none')};
--- a/packages/instant/src/containers/latest_buy_quote_order_details.ts
+++ b/packages/instant/src/containers/latest_buy_quote_order_details.ts
@@ -8,18 +8,21 @@ import { oc } from 'ts-optchain';
 import { State } from '../redux/reducer';

 import { OrderDetails } from '../components/order_details';
+import { AsyncProcessState } from '../types';

 export interface LatestBuyQuoteOrderDetailsProps {}

 interface ConnectedState {
    buyQuoteInfo?: BuyQuoteInfo;
    ethUsdPrice?: BigNumber;
+    isLoading: boolean;
 }

 const mapStateToProps = (state: State, _ownProps: LatestBuyQuoteOrderDetailsProps): ConnectedState => ({
    // use the worst case quote info
    buyQuoteInfo: oc(state).latestBuyQuote.worstCaseQuoteInfo(),
    ethUsdPrice: state.ethUsdPrice,
+    isLoading: state.quoteRequestState === AsyncProcessState.PENDING,
 });

 export const LatestBuyQuoteOrderDetails: React.ComponentClass<LatestBuyQuoteOrderDetailsProps> = connect(
--- a/packages/instant/src/containers/latest_error.tsx
+++ b/packages/instant/src/containers/latest_error.tsx
@@ -3,7 +3,8 @@ import * as React from 'react';
 import { connect } from 'react-redux';

 import { SlidingError } from '../components/sliding_error';
-import { LatestErrorDisplay, State } from '../redux/reducer';
+import { State } from '../redux/reducer';
+import { DisplayStatus } from '../types';
 import { errorUtil } from '../util/error';

 export interface LatestErrorComponentProps {
@@ -29,7 +30,7 @@ export interface LatestErrorProps {}
 const mapStateToProps = (state: State, _ownProps: LatestErrorProps): ConnectedState => ({
    assetData: state.selectedAssetData,
    latestError: state.latestError,
-    slidingDirection: state.latestErrorDisplay === LatestErrorDisplay.Present ? 'up' : 'down',
+    slidingDirection: state.latestErrorDisplay === DisplayStatus.Present ? 'up' : 'down',
 });

 export const LatestError = connect(mapStateToProps)(LatestErrorComponent);
--- a/packages/instant/src/containers/selected_asset_amount_input.ts
+++ b/packages/instant/src/containers/selected_asset_amount_input.ts
@@ -44,13 +44,13 @@ const updateBuyQuoteAsync = async (
    const baseUnitValue = Web3Wrapper.toBaseUnitAmount(assetAmount, zrxDecimals);

    // mark quote as pending
-    dispatch(actions.updateBuyQuoteStatePending());
+    dispatch(actions.setQuoteRequestStatePending());

    let newBuyQuote: BuyQuote | undefined;
    try {
        newBuyQuote = await assetBuyer.getBuyQuoteAsync(assetData, baseUnitValue);
    } catch (error) {
-        dispatch(actions.updateBuyQuoteStateFailure());
+        dispatch(actions.setQuoteRequestStateFailure());
        errorUtil.errorFlasher.flashNewError(dispatch, error);
        return;
    }
@@ -72,11 +72,11 @@ const mapDispatchToProps = (
        // invalidate the last buy quote.
        dispatch(actions.updateLatestBuyQuote(undefined));
        // reset our buy state
-        dispatch(actions.updatebuyOrderState(AsyncProcessState.NONE));
+        dispatch(actions.updateBuyOrderState(AsyncProcessState.NONE));

        if (!_.isUndefined(value) && !_.isUndefined(assetData)) {
            // even if it's debounced, give them the illusion it's loading
-            dispatch(actions.updateBuyQuoteStatePending());
+            dispatch(actions.setQuoteRequestStatePending());
            // tslint:disable-next-line:no-floating-promises
            debouncedUpdateBuyQuoteAsync(dispatch, assetData, value);
        }
--- a/packages/instant/src/containers/selected_asset_buy_button.ts
+++ b/packages/instant/src/containers/selected_asset_buy_button.ts
@@ -44,9 +44,9 @@ const mapStateToProps = (state: State, _ownProps: SelectedAssetBuyButtonProps):
 });

 const mapDispatchToProps = (dispatch: Dispatch<Action>, ownProps: SelectedAssetBuyButtonProps): ConnectedDispatch => ({
-    onClick: buyQuote => dispatch(actions.updatebuyOrderState(AsyncProcessState.PENDING)),
-    onBuySuccess: buyQuote => dispatch(actions.updatebuyOrderState(AsyncProcessState.SUCCESS)),
-    onBuyFailure: buyQuote => dispatch(actions.updatebuyOrderState(AsyncProcessState.FAILURE)),
+    onClick: buyQuote => dispatch(actions.updateBuyOrderState(AsyncProcessState.PENDING)),
+    onBuySuccess: buyQuote => dispatch(actions.updateBuyOrderState(AsyncProcessState.SUCCESS)),
+    onBuyFailure: buyQuote => dispatch(actions.updateBuyOrderState(AsyncProcessState.FAILURE)),
 });

 export const SelectedAssetBuyButton: React.ComponentClass<SelectedAssetBuyButtonProps> = connect(
--- a/packages/instant/src/containers/selected_asset_instant_heading.ts
+++ b/packages/instant/src/containers/selected_asset_instant_heading.ts
@@ -15,14 +15,14 @@ interface ConnectedState {
    selectedAssetAmount?: BigNumber;
    totalEthBaseAmount?: BigNumber;
    ethUsdPrice?: BigNumber;
-    quoteState: AsyncProcessState;
+    quoteRequestState: AsyncProcessState;
 }

 const mapStateToProps = (state: State, _ownProps: InstantHeadingProps): ConnectedState => ({
    selectedAssetAmount: state.selectedAssetAmount,
    totalEthBaseAmount: oc(state).latestBuyQuote.worstCaseQuoteInfo.totalEthAmount(),
    ethUsdPrice: state.ethUsdPrice,
-    quoteState: state.quoteState,
+    quoteRequestState: state.quoteRequestState,
 });

 export const SelectedAssetInstantHeading: React.ComponentClass<InstantHeadingProps> = connect(mapStateToProps)(
--- a/packages/instant/src/redux/actions.ts
+++ b/packages/instant/src/redux/actions.ts
@@ -25,8 +25,8 @@ export enum ActionTypes {
    UPDATE_SELECTED_ASSET_AMOUNT = 'UPDATE_SELECTED_ASSET_AMOUNT',
    UPDATE_SELECTED_ASSET_BUY_STATE = 'UPDATE_SELECTED_ASSET_BUY_STATE',
    UPDATE_LATEST_BUY_QUOTE = 'UPDATE_LATEST_BUY_QUOTE',
-    UPDATE_BUY_QUOTE_STATE_PENDING = 'UPDATE_BUY_QUOTE_STATE_PENDING',
-    UPDATE_BUY_QUOTE_STATE_FAILURE = 'UPDATE_BUY_QUOTE_STATE_FAILURE',
+    SET_QUOTE_REQUEST_STATE_PENDING = 'SET_QUOTE_REQUEST_STATE_PENDING',
+    SET_QUOTE_REQUEST_STATE_FAILURE = 'SET_QUOTE_REQUEST_STATE_FAILURE',
    SET_ERROR = 'SET_ERROR',
    HIDE_ERROR = 'HIDE_ERROR',
    CLEAR_ERROR = 'CLEAR_ERROR',
@@ -35,11 +35,11 @@ export enum ActionTypes {
 export const actions = {
    updateEthUsdPrice: (price?: BigNumber) => createAction(ActionTypes.UPDATE_ETH_USD_PRICE, price),
    updateSelectedAssetAmount: (amount?: BigNumber) => createAction(ActionTypes.UPDATE_SELECTED_ASSET_AMOUNT, amount),
-    updatebuyOrderState: (buyState: AsyncProcessState) =>
+    updateBuyOrderState: (buyState: AsyncProcessState) =>
        createAction(ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE, buyState),
    updateLatestBuyQuote: (buyQuote?: BuyQuote) => createAction(ActionTypes.UPDATE_LATEST_BUY_QUOTE, buyQuote),
-    updateBuyQuoteStatePending: () => createAction(ActionTypes.UPDATE_BUY_QUOTE_STATE_PENDING),
-    updateBuyQuoteStateFailure: () => createAction(ActionTypes.UPDATE_BUY_QUOTE_STATE_FAILURE),
+    setQuoteRequestStatePending: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_PENDING),
+    setQuoteRequestStateFailure: () => createAction(ActionTypes.SET_QUOTE_REQUEST_STATE_FAILURE),
    setError: (error?: any) => createAction(ActionTypes.SET_ERROR, error),
    hideError: () => createAction(ActionTypes.HIDE_ERROR),
    clearError: () => createAction(ActionTypes.CLEAR_ERROR),
--- a/packages/instant/src/redux/reducer.ts
+++ b/packages/instant/src/redux/reducer.ts
@@ -3,23 +3,19 @@ import { BigNumber } from '@0x/utils';
 import * as _ from 'lodash';

 import { zrxAssetData } from '../constants';
-import { AsyncProcessState } from '../types';
+import { AsyncProcessState, DisplayStatus } from '../types';

 import { Action, ActionTypes } from './actions';

-export enum LatestErrorDisplay {
-    Present,
-    Hidden,
-}
 export interface State {
    selectedAssetData?: string;
    selectedAssetAmount?: BigNumber;
    buyOrderState: AsyncProcessState;
    ethUsdPrice?: BigNumber;
    latestBuyQuote?: BuyQuote;
-    quoteState: AsyncProcessState;
+    quoteRequestState: AsyncProcessState;
    latestError?: any;
-    latestErrorDisplay: LatestErrorDisplay;
+    latestErrorDisplay: DisplayStatus;
 }

 export const INITIAL_STATE: State = {
@@ -30,8 +26,8 @@ export const INITIAL_STATE: State = {
    ethUsdPrice: undefined,
    latestBuyQuote: undefined,
    latestError: undefined,
-    latestErrorDisplay: LatestErrorDisplay.Hidden,
-    quoteState: AsyncProcessState.NONE,
+    latestErrorDisplay: DisplayStatus.Hidden,
+    quoteRequestState: AsyncProcessState.NONE,
 };

 export const reducer = (state: State = INITIAL_STATE, action: Action): State => {
@@ -50,19 +46,19 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
            return {
                ...state,
                latestBuyQuote: action.data,
-                quoteState: AsyncProcessState.SUCCESS,
+                quoteRequestState: AsyncProcessState.SUCCESS,
            };
-        case ActionTypes.UPDATE_BUY_QUOTE_STATE_PENDING:
+        case ActionTypes.SET_QUOTE_REQUEST_STATE_PENDING:
            return {
                ...state,
                latestBuyQuote: undefined,
-                quoteState: AsyncProcessState.PENDING,
+                quoteRequestState: AsyncProcessState.PENDING,
            };
-        case ActionTypes.UPDATE_BUY_QUOTE_STATE_FAILURE:
+        case ActionTypes.SET_QUOTE_REQUEST_STATE_FAILURE:
            return {
                ...state,
                latestBuyQuote: undefined,
-                quoteState: AsyncProcessState.FAILURE,
+                quoteRequestState: AsyncProcessState.FAILURE,
            };
        case ActionTypes.UPDATE_SELECTED_ASSET_BUY_STATE:
            return {
@@ -73,18 +69,18 @@ export const reducer = (state: State = INITIAL_STATE, action: Action): State =>
            return {
                ...state,
                latestError: action.data,
-                latestErrorDisplay: LatestErrorDisplay.Present,
+                latestErrorDisplay: DisplayStatus.Present,
            };
        case ActionTypes.HIDE_ERROR:
            return {
                ...state,
-                latestErrorDisplay: LatestErrorDisplay.Hidden,
+                latestErrorDisplay: DisplayStatus.Hidden,
            };
        case ActionTypes.CLEAR_ERROR:
            return {
                ...state,
                latestError: undefined,
-                latestErrorDisplay: LatestErrorDisplay.Hidden,
+                latestErrorDisplay: DisplayStatus.Hidden,
            };
        default:
            return state;
--- a/packages/instant/src/types.ts
+++ b/packages/instant/src/types.ts
@@ -7,6 +7,10 @@ export enum AsyncProcessState {
    SUCCESS = 'Success',
    FAILURE = 'Failure',
 }
+export enum DisplayStatus {
+    Present,
+    Hidden,
+}

 export type FunctionType = (...args: any[]) => any;
 export type ActionCreatorsMapObject = ObjectMap<FunctionType>;
--- a/packages/instant/tslint.json
+++ b/packages/instant/tslint.json
@@ -2,6 +2,7 @@
    "extends": ["@0x/tslint-config"],
    "rules": {
        "custom-no-magic-numbers": false,
-        "semicolon": [true, "always", "ignore-bound-class-methods"]
+        "semicolon": [true, "always", "ignore-bound-class-methods"],
+        "max-classes-per-file": false
    }
 }