Merge pull request #652 from 0xProject/feature/website/landing-subscribe-button-2

Implement subscribe form on landing page

packages/website/ts/components/forms/subscribe_form.tsx

@@ -0,0 +1,124 @@
+import { colors } from '@0xproject/react-shared';
+import * as _ from 'lodash';
+import * as React from 'react';
+
+import { Button } from 'ts/components/ui/button';
+import { Container } from 'ts/components/ui/container';
+import { Input } from 'ts/components/ui/input';
+import { Text } from 'ts/components/ui/text';
+import { styled } from 'ts/style/theme';
+import { backendClient } from 'ts/utils/backend_client';
+
+export interface SubscribeFormProps {}
+
+export enum SubscribeFormStatus {
+    None,
+    Error,
+    Success,
+    Loading,
+    Other,
+}
+
+export interface SubscribeFormState {
+    emailText: string;
+    lastSubmittedEmail: string;
+    status: SubscribeFormStatus;
+}
+
+const FORM_FONT_SIZE = '15px';
+
+// TODO: Translate visible strings. https://app.asana.com/0/628666249318202/697485674422001
+export class SubscribeForm extends React.Component<SubscribeFormProps, SubscribeFormState> {
+    public state = {
+        emailText: '',
+        lastSubmittedEmail: '',
+        status: SubscribeFormStatus.None,
+    };
+    public render(): React.ReactNode {
+        return (
+            <Container className="flex flex-column items-center justify-between md-mx2 sm-mx2">
+                <Container marginBottom="15px">
+                    <Text fontFamily="Roboto Mono" fontColor={colors.grey} center={true}>
+                        Subscribe to our newsletter for 0x relayer and dApp updates
+                    </Text>
+                </Container>
+                <form onSubmit={this._handleFormSubmitAsync.bind(this)}>
+                    <Container className="flex flex-wrap justify-center items-center">
+                        <Container marginTop="15px">
+                            <Input
+                                placeholder="you@email.com"
+                                value={this.state.emailText}
+                                fontColor={colors.white}
+                                fontSize={FORM_FONT_SIZE}
+                                backgroundColor={colors.projectsGrey}
+                                width="300px"
+                                onChange={this._handleEmailInputChange.bind(this)}
+                            />
+                        </Container>
+                        <Container marginLeft="15px" marginTop="15px">
+                            <Button
+                                type="submit"
+                                backgroundColor={colors.darkestGrey}
+                                fontColor={colors.white}
+                                fontSize={FORM_FONT_SIZE}
+                            >
+                                Subscribe
+                            </Button>
+                        </Container>
+                    </Container>
+                </form>
+                {this._renderMessage()}
+            </Container>
+        );
+    }
+    private _renderMessage(): React.ReactNode {
+        let message = null;
+        switch (this.state.status) {
+            case SubscribeFormStatus.Error:
+                message = 'Sorry, something went wrong. Try again later.';
+                break;
+            case SubscribeFormStatus.Loading:
+                message = 'One second...';
+                break;
+            case SubscribeFormStatus.Success:
+                message = `Thanks! ${this.state.lastSubmittedEmail} is now on the mailing list.`;
+                break;
+            case SubscribeFormStatus.None:
+                break;
+            default:
+                throw new Error(
+                    'The SubscribeFormStatus switch statement is not exhaustive when choosing an error message.',
+                );
+        }
+        return (
+            <Container isHidden={!message} marginTop="30px">
+                <Text center={true} fontFamily="Roboto Mono" fontColor={colors.grey}>
+                    {message || 'spacer text (never shown to user)'}
+                </Text>
+            </Container>
+        );
+    }
+    private _handleEmailInputChange(event: React.ChangeEvent<HTMLInputElement>): void {
+        this.setState({ emailText: event.target.value });
+    }
+    private async _handleFormSubmitAsync(event: React.FormEvent<HTMLInputElement>): Promise<void> {
+        event.preventDefault();
+        if (_.isUndefined(this.state.emailText) || _.isEmpty(this.state.emailText)) {
+            return;
+        }
+        this.setState({
+            status: SubscribeFormStatus.Loading,
+            lastSubmittedEmail: this.state.emailText,
+        });
+        try {
+            const response = await backendClient.subscribeToNewsletterAsync(this.state.emailText);
+            const status = response.status === 200 ? SubscribeFormStatus.Success : SubscribeFormStatus.Error;
+            this.setState({ status, emailText: '' });
+        } catch (error) {
+            this._setStatus(SubscribeFormStatus.Error);
+        }
+    }
+    private _setStatus(status: SubscribeFormStatus): void {
+        this.setState({ status });
+    }
+}

packages/website/ts/components/inputs/allowance_toggle.tsx

@@ -5,9 +5,9 @@ import Toggle from 'material-ui/Toggle';
 import * as React from 'react';
 import { Blockchain } from 'ts/blockchain';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { colors } from 'ts/style/colors';
 import { BalanceErrs, Token, TokenState } from 'ts/types';
 import { analytics } from 'ts/utils/analytics';
-import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
 import { errorReporter } from 'ts/utils/error_reporter';
 import { utils } from 'ts/utils/utils';

packages/website/ts/components/onboarding/onboarding_flow.tsx

@@ -5,7 +5,7 @@ import { Placement, Popper, PopperChildrenProps } from 'react-popper';
 import { ContinueButtonDisplay, OnboardingTooltip } from 'ts/components/onboarding/onboarding_tooltip';
 import { Container } from 'ts/components/ui/container';
 import { Overlay } from 'ts/components/ui/overlay';
-import { zIndex } from 'ts/utils/style';
+import { zIndex } from 'ts/style/z_index';
 
 export interface Step {
     target: string;

packages/website/ts/components/portal/back_button.tsx

@@ -2,7 +2,7 @@ import { Styles } from '@0xproject/react-shared';
 import * as React from 'react';
 import { Link } from 'react-router-dom';
 
-import { colors } from 'ts/utils/colors';
+import { colors } from 'ts/style/colors';
 
 export interface BackButtonProps {
     to: string;

packages/website/ts/components/portal/drawer_menu.tsx

@@ -4,8 +4,8 @@ import * as React from 'react';
 
 import { defaultMenuItemEntries, Menu } from 'ts/components/portal/menu';
 import { Identicon } from 'ts/components/ui/identicon';
+import { colors } from 'ts/style/colors';
 import { WebsitePaths } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 import { utils } from 'ts/utils/utils';
 
 const IDENTICON_DIAMETER = 45;

packages/website/ts/components/portal/menu.tsx

@@ -2,8 +2,8 @@ import { Styles } from '@0xproject/react-shared';
 import * as _ from 'lodash';
 import * as React from 'react';
 import { MenuItem } from 'ts/components/ui/menu_item';
+import { colors } from 'ts/style/colors';
 import { Environments, WebsitePaths } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 import { configs } from 'ts/utils/configs';
 
 export interface MenuTheme {

packages/website/ts/components/relayer_index/relayer_grid_tile.tsx

@@ -7,8 +7,8 @@ import { TopTokens } from 'ts/components/relayer_index/relayer_top_tokens';
 import { Container } from 'ts/components/ui/container';
 import { Island } from 'ts/components/ui/island';
 import { TokenIcon } from 'ts/components/ui/token_icon';
+import { colors } from 'ts/style/colors';
 import { Token, WebsiteBackendRelayerInfo } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 
 export interface RelayerGridTileProps {
     relayerInfo: WebsiteBackendRelayerInfo;

packages/website/ts/components/relayer_index/relayer_index.tsx

@@ -6,9 +6,9 @@ import { GridList } from 'material-ui/GridList';
 import * as React from 'react';
 
 import { RelayerGridTile } from 'ts/components/relayer_index/relayer_grid_tile';
+import { colors } from 'ts/style/colors';
 import { ScreenWidths, WebsiteBackendRelayerInfo } from 'ts/types';
 import { backendClient } from 'ts/utils/backend_client';
-import { colors } from 'ts/utils/colors';
 
 export interface RelayerIndexProps {
     networkId: number;

packages/website/ts/components/token_balances.tsx

@@ -77,11 +77,11 @@ interface TokenBalancesProps {
 
 interface TokenBalancesState {
     errorType: BalanceErrs;
+    trackedTokenStateByAddress: TokenStateByAddress;
     isBalanceSpinnerVisible: boolean;
     isZRXSpinnerVisible: boolean;
     isTokenPickerOpen: boolean;
     isAddingToken: boolean;
-    trackedTokenStateByAddress: TokenStateByAddress;
 }
 
 export class TokenBalances extends React.Component<TokenBalancesProps, TokenBalancesState> {

packages/website/ts/components/top_bar/provider_display.tsx

@@ -9,10 +9,10 @@ import { ProviderPicker } from 'ts/components/top_bar/provider_picker';
 import { DropDown } from 'ts/components/ui/drop_down';
 import { Identicon } from 'ts/components/ui/identicon';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { colors } from 'ts/style/colors';
+import { zIndex } from 'ts/style/z_index';
 import { ProviderType } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
-import { zIndex } from 'ts/utils/style';
 import { utils } from 'ts/utils/utils';
 
 const ROOT_HEIGHT = 24;

packages/website/ts/components/top_bar/top_bar.tsx

@@ -16,9 +16,9 @@ import { TopBarMenuItem } from 'ts/components/top_bar/top_bar_menu_item';
 import { DropDown } from 'ts/components/ui/drop_down';
 import { Identicon } from 'ts/components/ui/identicon';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { zIndex } from 'ts/style/z_index';
 import { Deco, Key, ProviderType, WebsiteLegacyPaths, WebsitePaths } from 'ts/types';
 import { constants } from 'ts/utils/constants';
-import { zIndex } from 'ts/utils/style';
 import { Translate } from 'ts/utils/translate';
 import { utils } from 'ts/utils/utils';
 

packages/website/ts/components/ui/button.tsx

@@ -0,0 +1,79 @@
+import { colors } from '@0xproject/react-shared';
+import { darken } from 'polished';
+import * as React from 'react';
+import { styled } from 'ts/style/theme';
+
+export interface ButtonProps {
+    className?: string;
+    fontSize?: string;
+    fontColor?: string;
+    backgroundColor?: string;
+    borderColor?: string;
+    width?: string;
+    type?: string;
+    onClick?: (event: React.MouseEvent<HTMLElement>) => void;
+}
+
+const PlainButton: React.StatelessComponent<ButtonProps> = ({ children, onClick, type, className }) => (
+    <button type={type} className={className} onClick={onClick}>
+        {children}
+    </button>
+);
+
+export const Button = styled(PlainButton)`
+    cursor: pointer;
+    font-size: ${props => props.fontSize};
+    color: ${props => props.fontColor};
+    padding: 0.8em 2.2em;
+    border-radius: 6px;
+    box-shadow: 0px 0px 4px rgba(0, 0, 0, 0.25);
+    font-weight: 500;
+    font-family: 'Roboto';
+    width: ${props => props.width};
+    background-color: ${props => props.backgroundColor};
+    border: ${props => (props.borderColor ? `1px solid ${props.borderColor}` : 'none')};
+    &:hover {
+        background-color: ${props => darken(0.1, props.backgroundColor)};
+    }
+    &:active {
+        background-color: ${props => darken(0.2, props.backgroundColor)};
+    }
+`;
+
+Button.defaultProps = {
+    fontSize: '12px',
+    backgroundColor: colors.white,
+    width: 'auto',
+};
+
+Button.displayName = 'Button';
+
+type CallToActionType = 'light' | 'dark';
+
+export interface CallToActionProps {
+    type?: CallToActionType;
+    fontSize?: string;
+    width?: string;
+}
+
+export const CallToAction: React.StatelessComponent<CallToActionProps> = ({ children, type, fontSize, width }) => {
+    const isLight = type === 'light';
+    const backgroundColor = isLight ? colors.white : colors.heroGrey;
+    const fontColor = isLight ? colors.heroGrey : colors.white;
+    const borderColor = isLight ? undefined : colors.white;
+    return (
+        <Button
+            fontSize={fontSize}
+            backgroundColor={backgroundColor}
+            fontColor={fontColor}
+            width={width}
+            borderColor={borderColor}
+        >
+            {children}
+        </Button>
+    );
+};
+
+CallToAction.defaultProps = {
+    type: 'dark',
+};

packages/website/ts/components/ui/container.tsx

@@ -11,13 +11,20 @@ export interface ContainerProps {
     paddingBottom?: StringOrNum;
     paddingRight?: StringOrNum;
     paddingLeft?: StringOrNum;
+    backgroundColor?: string;
+    borderRadius?: StringOrNum;
     maxWidth?: StringOrNum;
-    children?: React.ReactNode;
+    isHidden?: boolean;
+    className?: string;
 }
 
-export const Container: React.StatelessComponent<ContainerProps> = (props: ContainerProps) => {
-    const { children, ...style } = props;
-    return <div style={style}>{children}</div>;
+export const Container: React.StatelessComponent<ContainerProps> = ({ children, className, isHidden, ...style }) => {
+    const visibility = isHidden ? 'hidden' : undefined;
+    return (
+        <div style={{ ...style, visibility }} className={className}>
+            {children}
+        </div>
+    );
 };
 
 Container.displayName = 'Container';

packages/website/ts/components/ui/input.tsx

@@ -0,0 +1,43 @@
+import { colors } from '@0xproject/react-shared';
+import * as React from 'react';
+import { styled } from 'ts/style/theme';
+
+export interface InputProps {
+    className?: string;
+    value?: string;
+    width?: string;
+    fontSize?: string;
+    fontColor?: string;
+    placeholderColor?: string;
+    placeholder?: string;
+    backgroundColor?: string;
+    onChange?: (event: React.ChangeEvent<HTMLInputElement>) => void;
+}
+
+const PlainInput: React.StatelessComponent<InputProps> = ({ value, className, placeholder, onChange }) => (
+    <input className={className} value={value} onChange={onChange} placeholder={placeholder} />
+);
+
+export const Input = styled(PlainInput)`
+    font-size: ${props => props.fontSize};
+    width: ${props => props.width};
+    padding: 0.8em 1.2em;
+    border-radius: 3px;
+    font-family: 'Roboto Mono';
+    color: ${props => props.fontColor};
+    border: none;
+    background-color: ${props => props.backgroundColor};
+    &::placeholder {
+        color: ${props => props.placeholderColor};
+    }
+`;
+
+Input.defaultProps = {
+    width: 'auto',
+    backgroundColor: colors.white,
+    fontColor: colors.darkestGrey,
+    placeholderColor: colors.darkGrey,
+    fontSize: '12px',
+};
+
+Input.displayName = 'Input';

packages/website/ts/components/ui/island.tsx

@@ -1,6 +1,6 @@
 import * as React from 'react';
+import { colors } from 'ts/style/colors';
 import { Styleable } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 
 export interface IslandProps {
     style?: React.CSSProperties;

packages/website/ts/components/ui/overlay.tsx

@@ -2,7 +2,7 @@ import { colors } from '@0xproject/react-shared';
 import * as _ from 'lodash';
 import * as React from 'react';
 
-import { zIndex } from 'ts/utils/style';
+import { zIndex } from 'ts/style/z_index';
 
 export interface OverlayProps {
     children?: React.ReactNode;

packages/website/ts/components/ui/text.tsx

@@ -0,0 +1,56 @@
+import { colors } from '@0xproject/react-shared';
+import * as React from 'react';
+import { styled } from 'ts/style/theme';
+import { Deco, Key } from 'ts/types';
+import { Translate } from 'ts/utils/translate';
+
+export type TextTag = 'p' | 'div' | 'span' | 'label';
+
+export interface TextProps {
+    className?: string;
+    Tag?: TextTag;
+    fontSize?: string;
+    fontFamily?: string;
+    fontColor?: string;
+    lineHeight?: string;
+    center?: boolean;
+    fontWeight?: number;
+}
+
+const PlainText: React.StatelessComponent<TextProps> = ({ children, className, Tag }) => (
+    <Tag className={className}>{children}</Tag>
+);
+
+export const Text = styled(PlainText)`
+    font-family: ${props => props.fontFamily};
+    font-weight: ${props => props.fontWeight};
+    font-size: ${props => props.fontSize};
+    ${props => (props.lineHeight ? `line-height: ${props.lineHeight}` : '')};
+    ${props => (props.center ? 'text-align: center' : '')};
+    color: ${props => props.fontColor};
+`;
+
+Text.defaultProps = {
+    fontFamily: 'Roboto',
+    fontWeight: 400,
+    fontColor: colors.white,
+    fontSize: '14px',
+    Tag: 'div',
+};
+
+Text.displayName = 'Text';
+
+interface TranslatedProps {
+    children: Key;
+    translate: Translate;
+    deco?: Deco;
+}
+
+export type TranslatedTextProps = TextProps & TranslatedProps;
+
+export const TranslatedText: React.StatelessComponent<TranslatedTextProps> = ({
+    translate,
+    children,
+    deco,
+    ...textProps,
+}) => <Text {...textProps}>{translate.get(children, deco)}</Text>;

packages/website/ts/components/wallet/wallet.tsx

@@ -32,6 +32,8 @@ import { TokenIcon } from 'ts/components/ui/token_icon';
 import { WalletDisconnectedItem } from 'ts/components/wallet/wallet_disconnected_item';
 import { WrapEtherItem } from 'ts/components/wallet/wrap_ether_item';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { colors } from 'ts/style/colors';
+import { zIndex } from 'ts/style/z_index';
 import {
     BalanceErrs,
     BlockchainErrs,
@@ -46,9 +48,7 @@ import {
     WebsitePaths,
 } from 'ts/types';
 import { backendClient } from 'ts/utils/backend_client';
-import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
-import { zIndex } from 'ts/utils/style';
 import { utils } from 'ts/utils/utils';
 import { styles as walletItemStyles } from 'ts/utils/wallet_item_styles';
 

packages/website/ts/components/wallet/wallet_disconnected_item.tsx

@@ -3,8 +3,8 @@ import FlatButton from 'material-ui/FlatButton';
 import ActionAccountBalanceWallet from 'material-ui/svg-icons/action/account-balance-wallet';
 import * as React from 'react';
 
+import { colors } from 'ts/style/colors';
 import { ProviderType } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
 import { utils } from 'ts/utils/utils';
 

packages/website/ts/components/wallet/wrap_ether_item.tsx

@@ -10,8 +10,8 @@ import { Blockchain } from 'ts/blockchain';
 import { EthAmountInput } from 'ts/components/inputs/eth_amount_input';
 import { TokenAmountInput } from 'ts/components/inputs/token_amount_input';
 import { Dispatcher } from 'ts/redux/dispatcher';
+import { colors } from 'ts/style/colors';
 import { BlockchainCallErrs, Side, Token } from 'ts/types';
-import { colors } from 'ts/utils/colors';
 import { constants } from 'ts/utils/constants';
 import { errorReporter } from 'ts/utils/error_reporter';
 import { utils } from 'ts/utils/utils';

packages/website/ts/pages/landing/landing.tsx

@@ -1,11 +1,13 @@
 import { colors } from '@0xproject/react-shared';
 import * as _ from 'lodash';
-import RaisedButton from 'material-ui/RaisedButton';
 import * as React from 'react';
 import DocumentTitle = require('react-document-title');
 import { Link } from 'react-router-dom';
 import { Footer } from 'ts/components/footer';
+import { SubscribeForm } from 'ts/components/forms/subscribe_form';
 import { TopBar } from 'ts/components/top_bar/top_bar';
+import { CallToAction } from 'ts/components/ui/button';
+import { Container } from 'ts/components/ui/container';
 import { Dispatcher } from 'ts/redux/dispatcher';
 import { Deco, Key, Language, ScreenWidths, WebsitePaths } from 'ts/types';
 import { constants } from 'ts/utils/constants';
@@ -236,7 +238,7 @@ export class Landing extends React.Component<LandingProps, LandingState> {
             <div className="clearfix py4" style={{ backgroundColor: colors.heroGrey }}>
                 <div className="mx-auto max-width-4 clearfix">
                     {this._renderWhatsNew()}
-                    <div className="lg-pt4 md-pt4 sm-pt2 lg-pb4 md-pb4 lg-my4 md-my4 sm-mt2 sm-mb4 clearfix">
+                    <div className="lg-pt4 md-pt4 sm-pt2 lg-pb4 md-pb4 lg-mt4 md-mt4 sm-mt2 sm-mb4 clearfix">
                         <div className="col lg-col-5 md-col-5 col-12 sm-center">
                             <img src="/images/landing/hero_chip_image.png" height={isSmallScreen ? 300 : 395} />
                         </div>
@@ -268,40 +270,31 @@ export class Landing extends React.Component<LandingProps, LandingState> {
                                 >
                                     {this.props.translate.get(Key.TopTagline)}
                                 </div>
-                                <div className="pt3 clearfix sm-mx-auto" style={{ maxWidth: 389 }}>
-                                    <div className="lg-pr2 md-pr2 col col-6 sm-center">
+                                <Container className="pt3 clearfix sm-mx-auto" maxWidth="390px">
+                                    <div className="lg-pr2 md-pr2 lg-col lg-col-6 sm-center sm-col sm-col-12 mb2">
                                         <Link to={WebsitePaths.ZeroExJs} className="text-decoration-none">
-                                            <RaisedButton
-                                                style={{ borderRadius: 6, minWidth: 157.36 }}
-                                                buttonStyle={{ borderRadius: 6 }}
-                                                labelStyle={buttonLabelStyle}
-                                                label={this.props.translate.get(Key.BuildCallToAction, Deco.Cap)}
-                                                onClick={_.noop}
-                                            />
+                                            <CallToAction width="175px" type="light">
+                                                {this.props.translate.get(Key.BuildCallToAction, Deco.Cap)}
+                                            </CallToAction>
                                         </Link>
                                     </div>
-                                    <div className="col col-6 sm-center">
+                                    <div className="lg-col lg-col-6 sm-center sm-col sm-col-12">
                                         <a
                                             href={constants.URL_ZEROEX_CHAT}
                                             target="_blank"
                                             className="text-decoration-none"
                                         >
-                                            <RaisedButton
-                                                style={{ borderRadius: 6, minWidth: 150 }}
-                                                buttonStyle={lightButtonStyle}
-                                                labelColor="white"
-                                                backgroundColor={colors.heroGrey}
-                                                labelStyle={buttonLabelStyle}
-                                                label={this.props.translate.get(Key.CommunityCallToAction, Deco.Cap)}
-                                                onClick={_.noop}
-                                            />
+                                            <CallToAction width="175px">
+                                                {this.props.translate.get(Key.CommunityCallToAction, Deco.Cap)}
+                                            </CallToAction>
                                         </a>
                                     </div>
-                                </div>
+                                </Container>
                             </div>
                         </div>
                     </div>
                 </div>
+                {this.props.translate.getLanguage() === Language.English && <SubscribeForm />}
             </div>
         );
     }
@@ -782,15 +775,9 @@ export class Landing extends React.Component<LandingProps, LandingState> {
                         </div>
                         <div className="sm-center sm-pt2 lg-table-cell md-table-cell">
                             <Link to={WebsitePaths.ZeroExJs} className="text-decoration-none">
-                                <RaisedButton
-                                    style={{ borderRadius: 6, minWidth: 150 }}
-                                    buttonStyle={lightButtonStyle}
-                                    labelColor={colors.white}
-                                    backgroundColor={colors.heroGrey}
-                                    labelStyle={buttonLabelStyle}
-                                    label={this.props.translate.get(Key.BuildCallToAction, Deco.Cap)}
-                                    onClick={_.noop}
-                                />
+                                <CallToAction fontSize="15px">
+                                    {this.props.translate.get(Key.BuildCallToAction, Deco.Cap)}
+                                </CallToAction>
                             </Link>
                         </div>
                     </div>

packages/website/ts/style/theme.ts

@@ -0,0 +1,15 @@
+import * as styledComponents from 'styled-components';
+
+const {
+    default: styled,
+    css,
+    injectGlobal,
+    keyframes,
+    ThemeProvider,
+} = styledComponents as styledComponents.ThemedStyledComponentsModule<IThemeInterface>;
+
+export interface IThemeInterface {}
+
+export const theme = {};
+
+export { styled, css, injectGlobal, keyframes, ThemeProvider };

packages/website/ts/utils/backend_client.ts

@@ -8,6 +8,7 @@ const ETH_GAS_STATION_ENDPOINT = '/eth_gas_station';
 const PRICES_ENDPOINT = '/prices';
 const RELAYERS_ENDPOINT = '/relayers';
 const WIKI_ENDPOINT = '/wiki';
+const SUBSCRIBE_SUBSTACK_NEWSLETTER_ENDPOINT = '/newsletter_subscriber/substack';
 
 export const backendClient = {
     async getGasInfoAsync(): Promise<WebsiteBackendGasInfo> {
@@ -33,4 +34,11 @@ export const backendClient = {
         const result = await fetchUtils.requestAsync(utils.getBackendBaseUrl(), WIKI_ENDPOINT);
         return result;
     },
+    async subscribeToNewsletterAsync(email: string): Promise<Response> {
+        const result = await fetchUtils.postAsync(utils.getBackendBaseUrl(), SUBSCRIBE_SUBSTACK_NEWSLETTER_ENDPOINT, {
+            email,
+            referrer: window.location.href,
+        });
+        return result;
+    },
 };

packages/website/ts/utils/fetch_utils.ts

@@ -4,22 +4,38 @@ import * as queryString from 'query-string';
 
 import { errorReporter } from 'ts/utils/error_reporter';
 
+const logErrorIfPresent = (response: Response, requestedURL: string) => {
+    if (response.status !== 200) {
+        const errorText = `Error requesting url: ${requestedURL}, ${response.status}: ${response.statusText}`;
+        logUtils.log(errorText);
+        const error = Error(errorText);
+        // tslint:disable-next-line:no-floating-promises
+        errorReporter.reportAsync(error);
+        throw error;
+    }
+};
+
 export const fetchUtils = {
     async requestAsync(baseUrl: string, path: string, queryParams?: object): Promise<any> {
         const query = queryStringFromQueryParams(queryParams);
         const url = `${baseUrl}${path}${query}`;
         const response = await fetch(url);
-        if (response.status !== 200) {
-            const errorText = `Error requesting url: ${url}, ${response.status}: ${response.statusText}`;
-            logUtils.log(errorText);
-            const error = Error(errorText);
-            // tslint:disable-next-line:no-floating-promises
-            errorReporter.reportAsync(error);
-            throw error;
-        }
+        logErrorIfPresent(response, url);
         const result = await response.json();
         return result;
     },
+    async postAsync(baseUrl: string, path: string, body: object): Promise<Response> {
+        const url = `${baseUrl}${path}`;
+        const response = await fetch(url, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'application/json',
+            },
+            body: JSON.stringify(body),
+        });
+        logErrorIfPresent(response, url);
+        return response;
+    },
 };
 
 function queryStringFromQueryParams(queryParams?: object): string {

packages/website/ts/utils/wallet_item_styles.ts

@@ -1,6 +1,6 @@
 import { Styles } from '@0xproject/react-shared';
 
-import { colors } from 'ts/utils/colors';
+import { colors } from 'ts/style/colors';
 
 export const styles: Styles = {
     focusedItem: {