Merge branch 'development' into v2-prototype

* development: (29 commits)
  Do not remove artifacts when running `clean`
  fix style errors
  Fix circular dependency
  Add my profile image to images
  Add myself to about page
  Add dogfood configs to website
  Revert to lerna:run lint
  Do lint sequentially
  Exclude monorepo-scripts from tslint as test
  Fix prettier
  Add hover state to top tokens
  Change to weekly txn volume
  Change minimum Node version to 6.12
  Document Node.js version requirement and add it to package.json
  Apply prettier to some files which were not formatted correctly
  Fix TSLint issues
  Fix TSLint issues
  Update ethereeumjs-testrpc to ganache-cli
  Fix infinite loop
  Add changelog entries for packages where executable binary exporting fixed
  ...

# Conflicts:
#	packages/contracts/package.json
#	packages/contracts/util/formatters.ts
#	packages/contracts/util/signed_order_utils.ts
#	packages/migrations/package.json
#	yarn.lock

62 files changed, 354 insertions, 321 deletions

diff --git a/packages/website/ts/components/dialogs/blockchain_err_dialog.tsx b/packages/website/ts/components/dialogs/blockchain_err_dialog.tsx
index 1c3b7458d..7156e700b 100644
--- a/packages/website/ts/components/dialogs/blockchain_err_dialog.tsx
+++ b/packages/website/ts/components/dialogs/blockchain_err_dialog.tsx
@@ -18,7 +18,7 @@ interface BlockchainErrDialogProps {
 }
 
 export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProps, undefined> {
-    public render() {
+    public render(): React.ReactNode {
         const dialogActions = [
             <FlatButton
                 key="blockchainErrOk"
@@ -45,7 +45,7 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             </Dialog>
         );
     }
-    private _getTitle(hasWalletAddress: boolean) {
+    private _getTitle(hasWalletAddress: boolean): string {
         if (this.props.blockchainErr === BlockchainErrs.AContractNotDeployedOnNetwork) {
             return '0x smart contracts not found';
         } else if (!hasWalletAddress) {
@@ -58,7 +58,7 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             return 'Unexpected error';
         }
     }
-    private _renderExplanation(hasWalletAddress: boolean) {
+    private _renderExplanation(hasWalletAddress: boolean): React.ReactNode {
         if (this.props.blockchainErr === BlockchainErrs.AContractNotDeployedOnNetwork) {
             return this._renderContractsNotDeployedExplanation();
         } else if (!hasWalletAddress) {
@@ -71,7 +71,7 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             return this._renderUnexpectedErrorExplanation();
         }
     }
-    private _renderDisconnectedFromNode() {
+    private _renderDisconnectedFromNode(): React.ReactNode {
         return (
             <div>
                 You were disconnected from the backing Ethereum node. If using{' '}
@@ -86,7 +86,7 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             </div>
         );
     }
-    private _renderDefaultTokenNotInTokenRegistry() {
+    private _renderDefaultTokenNotInTokenRegistry(): React.ReactNode {
         return (
             <div>
                 The TokenRegistry deployed on your network does not contain the needed default tokens for 0x Portal to
@@ -96,10 +96,10 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             </div>
         );
     }
-    private _renderUnexpectedErrorExplanation() {
+    private _renderUnexpectedErrorExplanation(): React.ReactNode {
         return <div>We encountered an unexpected error. Please try refreshing the page.</div>;
     }
-    private _renderNoWalletFoundExplanation() {
+    private _renderNoWalletFoundExplanation(): React.ReactNode {
         return (
             <div>
                 <div>
@@ -137,7 +137,7 @@ export class BlockchainErrDialog extends React.Component<BlockchainErrDialogProp
             </div>
         );
     }
-    private _renderContractsNotDeployedExplanation() {
+    private _renderContractsNotDeployedExplanation(): React.ReactNode {
         return (
             <div>
                 <div>
diff --git a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
index 42ca1713d..069a75560 100644
--- a/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
+++ b/packages/website/ts/components/dialogs/eth_weth_conversion_dialog.tsx
@@ -47,14 +47,14 @@ export class EthWethConversionDialog extends React.Component<
             ethTokenBalance: new BigNumber(0),
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         // tslint:disable-next-line:no-floating-promises
         this._fetchEthTokenBalanceAsync();
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public render() {
+    public render(): React.ReactNode {
         const convertDialogActions = [
             <FlatButton key="cancel" label="Cancel" onTouchTap={this._onCancel.bind(this)} />,
             <FlatButton key="convert" label="Convert" primary={true} onTouchTap={this._onConvertClick.bind(this)} />,
@@ -72,7 +72,7 @@ export class EthWethConversionDialog extends React.Component<
             </Dialog>
         );
     }
-    private _renderConversionDialogBody() {
+    private _renderConversionDialogBody(): React.ReactNode {
         const explanation =
             this.props.direction === Side.Deposit
                 ? 'Convert your Ether into a tokenized, tradable form.'
@@ -137,7 +137,7 @@ export class EthWethConversionDialog extends React.Component<
             </div>
         );
     }
-    private _renderCurrency(isWrappedVersion: boolean) {
+    private _renderCurrency(isWrappedVersion: boolean): React.ReactNode {
         const name = isWrappedVersion ? 'Wrapped Ether' : 'Ether';
         const iconUrl = isWrappedVersion ? '/images/token_icons/ether_erc20.png' : '/images/ether.png';
         const symbol = isWrappedVersion ? 'WETH' : 'ETH';
@@ -155,18 +155,18 @@ export class EthWethConversionDialog extends React.Component<
             </div>
         );
     }
-    private _onMaxClick() {
+    private _onMaxClick(): void {
         this.setState({
             value: this.state.ethTokenBalance,
         });
     }
-    private _onValueChange(isValid: boolean, amount?: BigNumber) {
+    private _onValueChange(isValid: boolean, amount?: BigNumber): void {
         this.setState({
             value: amount,
             hasErrors: !isValid,
         });
     }
-    private _onConvertClick() {
+    private _onConvertClick(): void {
         if (this.state.hasErrors) {
             this.setState({
                 shouldShowIncompleteErrs: true,
@@ -179,13 +179,13 @@ export class EthWethConversionDialog extends React.Component<
             this.props.onComplete(this.props.direction, value);
         }
     }
-    private _onCancel() {
+    private _onCancel(): void {
         this.setState({
             value: undefined,
         });
         this.props.onCancelled();
     }
-    private async _fetchEthTokenBalanceAsync() {
+    private async _fetchEthTokenBalanceAsync(): Promise<void> {
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
             userAddressIfExists,
diff --git a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
index a72d33183..3c839d6f5 100644
--- a/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
+++ b/packages/website/ts/components/dialogs/ledger_config_dialog.tsx
@@ -59,7 +59,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             preferredNetworkId: props.networkId,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const dialogActions = [
             <FlatButton key="ledgerConnectCancel" label="Cancel" onTouchTap={this._onClose.bind(this)} />,
         ];
@@ -82,7 +82,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             </Dialog>
         );
     }
-    private _renderConnectStep() {
+    private _renderConnectStep(): React.ReactNode {
         const networkIds = _.values(sharedConstants.NETWORK_ID_BY_NAME);
         return (
             <div>
@@ -122,7 +122,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             </div>
         );
     }
-    private _renderSelectAddressStep() {
+    private _renderSelectAddressStep(): React.ReactNode {
         return (
             <div>
                 <div>
@@ -159,7 +159,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             </div>
         );
     }
-    private _renderAddressTableRows() {
+    private _renderAddressTableRows(): React.ReactNode {
         const rows = _.map(this.state.userAddresses, (userAddress: string, i: number) => {
             const balanceInWei = this.state.addressBalances[i];
             const addressTooltipId = `address-${userAddress}`;
@@ -189,7 +189,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         });
         return rows;
     }
-    private _onClose() {
+    private _onClose(): void {
         this.setState({
             connectionErrMsg: '',
             stepIndex: LedgerSteps.CONNECT,
@@ -197,7 +197,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         const isOpen = false;
         this.props.toggleDialogFn(isOpen);
     }
-    private _onAddressSelected(selectedRowIndexes: number[]) {
+    private _onAddressSelected(selectedRowIndexes: number[]): void {
         const selectedRowIndex = selectedRowIndexes[0];
         const selectedAddress = this.state.userAddresses[selectedRowIndex];
         const selectAddressBalance = this.state.addressBalances[selectedRowIndex];
@@ -228,7 +228,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         }
         return didSucceed;
     }
-    private async _fetchAddressesAndBalancesAsync() {
+    private async _fetchAddressesAndBalancesAsync(): Promise<boolean> {
         let userAddresses: string[];
         const addressBalances: BigNumber[] = [];
         try {
@@ -250,7 +250,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         });
         return true;
     }
-    private _onDerivationPathChanged(e: any, derivationPath: string) {
+    private _onDerivationPathChanged(e: any, derivationPath: string): void {
         let derivationErrMsg = '';
         if (!_.startsWith(derivationPath, VALID_ETHEREUM_DERIVATION_PATH_PREFIX)) {
             derivationErrMsg = 'Must be valid Ethereum path.';
@@ -261,7 +261,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
             derivationErrMsg,
         });
     }
-    private async _onConnectLedgerClickAsync() {
+    private async _onConnectLedgerClickAsync(): Promise<boolean> {
         const isU2FSupported = await utils.isU2FSupportedAsync();
         if (!isU2FSupported) {
             logUtils.log(`U2F not supported in this browser`);
@@ -295,7 +295,7 @@ export class LedgerConfigDialog extends React.Component<LedgerConfigDialogProps,
         }
         return userAddresses;
     }
-    private _onSelectedNetworkUpdated(e: any, index: number, networkId: number) {
+    private _onSelectedNetworkUpdated(e: any, index: number, networkId: number): void {
         this.setState({
             preferredNetworkId: networkId,
         });
diff --git a/packages/website/ts/components/dialogs/portal_disclaimer_dialog.tsx b/packages/website/ts/components/dialogs/portal_disclaimer_dialog.tsx
index b31667121..41a17fe96 100644
--- a/packages/website/ts/components/dialogs/portal_disclaimer_dialog.tsx
+++ b/packages/website/ts/components/dialogs/portal_disclaimer_dialog.tsx
@@ -8,7 +8,7 @@ interface PortalDisclaimerDialogProps {
     onToggleDialog: () => void;
 }
 
-export function PortalDisclaimerDialog(props: PortalDisclaimerDialogProps) {
+export const PortalDisclaimerDialog = (props: PortalDisclaimerDialogProps) => {
     return (
         <Dialog
             title="0x Portal Disclaimer"
@@ -33,4 +33,4 @@ export function PortalDisclaimerDialog(props: PortalDisclaimerDialogProps) {
             </div>
         </Dialog>
     );
-}
+};
diff --git a/packages/website/ts/components/dialogs/send_dialog.tsx b/packages/website/ts/components/dialogs/send_dialog.tsx
index 2af7fd7ac..421f18b4f 100644
--- a/packages/website/ts/components/dialogs/send_dialog.tsx
+++ b/packages/website/ts/components/dialogs/send_dialog.tsx
@@ -35,7 +35,7 @@ export class SendDialog extends React.Component<SendDialogProps, SendDialogState
             isAmountValid: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const transferDialogActions = [
             <FlatButton key="cancelTransfer" label="Cancel" onTouchTap={this._onCancel.bind(this)} />,
             <FlatButton
@@ -57,7 +57,7 @@ export class SendDialog extends React.Component<SendDialogProps, SendDialogState
             </Dialog>
         );
     }
-    private _renderSendDialogBody() {
+    private _renderSendDialogBody(): React.ReactNode {
         return (
             <div className="mx-auto" style={{ maxWidth: 300 }}>
                 <div style={{ height: 80 }}>
@@ -86,19 +86,19 @@ export class SendDialog extends React.Component<SendDialogProps, SendDialogState
             </div>
         );
     }
-    private _onRecipientChange(recipient?: string) {
+    private _onRecipientChange(recipient?: string): void {
         this.setState({
             shouldShowIncompleteErrs: false,
             recipient,
         });
     }
-    private _onValueChange(isValid: boolean, amount?: BigNumber) {
+    private _onValueChange(isValid: boolean, amount?: BigNumber): void {
         this.setState({
             isAmountValid: isValid,
             value: amount,
         });
     }
-    private _onSendClick() {
+    private _onSendClick(): void {
         if (this._hasErrors()) {
             this.setState({
                 shouldShowIncompleteErrs: true,
@@ -112,13 +112,13 @@ export class SendDialog extends React.Component<SendDialogProps, SendDialogState
             this.props.onComplete(this.state.recipient, value);
         }
     }
-    private _onCancel() {
+    private _onCancel(): void {
         this.setState({
             value: undefined,
         });
         this.props.onCancelled();
     }
-    private _hasErrors() {
+    private _hasErrors(): boolean {
         return _.isUndefined(this.state.recipient) || _.isUndefined(this.state.value) || !this.state.isAmountValid;
     }
 }
diff --git a/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx b/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
index bb7e3ed1a..ac0b27cdc 100644
--- a/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
+++ b/packages/website/ts/components/dialogs/track_token_confirmation_dialog.tsx
@@ -33,7 +33,7 @@ export class TrackTokenConfirmationDialog extends React.Component<
             isAddingTokenToTracked: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const tokens = this.props.tokens;
         return (
             <Dialog
@@ -66,7 +66,7 @@ export class TrackTokenConfirmationDialog extends React.Component<
             </Dialog>
         );
     }
-    private async _onTrackConfirmationRespondedAsync(didUserAcceptTracking: boolean) {
+    private async _onTrackConfirmationRespondedAsync(didUserAcceptTracking: boolean): Promise<void> {
         if (!didUserAcceptTracking) {
             this.props.onToggleDialog(didUserAcceptTracking);
             return;
diff --git a/packages/website/ts/components/dialogs/u2f_not_supported_dialog.tsx b/packages/website/ts/components/dialogs/u2f_not_supported_dialog.tsx
index 6ac9cf917..ce86df856 100644
--- a/packages/website/ts/components/dialogs/u2f_not_supported_dialog.tsx
+++ b/packages/website/ts/components/dialogs/u2f_not_supported_dialog.tsx
@@ -9,7 +9,7 @@ interface U2fNotSupportedDialogProps {
     onToggleDialog: () => void;
 }
 
-export function U2fNotSupportedDialog(props: U2fNotSupportedDialogProps) {
+export const U2fNotSupportedDialog = (props: U2fNotSupportedDialogProps) => {
     return (
         <Dialog
             title="U2F Not Supported"
@@ -43,4 +43,4 @@ export function U2fNotSupportedDialog(props: U2fNotSupportedDialogProps) {
             </div>
         </Dialog>
     );
-}
+};
diff --git a/packages/website/ts/components/dialogs/wrapped_eth_section_notice_dialog.tsx b/packages/website/ts/components/dialogs/wrapped_eth_section_notice_dialog.tsx
index 9e91ff12d..78b270c1e 100644
--- a/packages/website/ts/components/dialogs/wrapped_eth_section_notice_dialog.tsx
+++ b/packages/website/ts/components/dialogs/wrapped_eth_section_notice_dialog.tsx
@@ -8,7 +8,7 @@ interface WrappedEthSectionNoticeDialogProps {
     onToggleDialog: () => void;
 }
 
-export function WrappedEthSectionNoticeDialog(props: WrappedEthSectionNoticeDialogProps) {
+export const WrappedEthSectionNoticeDialog = (props: WrappedEthSectionNoticeDialogProps) => {
     return (
         <Dialog
             title="Dedicated Wrapped Ether Section"
@@ -30,4 +30,4 @@ export function WrappedEthSectionNoticeDialog(props: WrappedEthSectionNoticeDial
             </div>
         </Dialog>
     );
-}
+};
diff --git a/packages/website/ts/components/dropdowns/network_drop_down.tsx b/packages/website/ts/components/dropdowns/network_drop_down.tsx
index b569807dd..2fd2785d1 100644
--- a/packages/website/ts/components/dropdowns/network_drop_down.tsx
+++ b/packages/website/ts/components/dropdowns/network_drop_down.tsx
@@ -13,7 +13,7 @@ interface NetworkDropDownProps {
 interface NetworkDropDownState {}
 
 export class NetworkDropDown extends React.Component<NetworkDropDownProps, NetworkDropDownState> {
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="mx-auto" style={{ width: 120 }}>
                 <DropDownMenu value={this.props.selectedNetworkId} onChange={this.props.updateSelectedNetwork}>
@@ -22,7 +22,7 @@ export class NetworkDropDown extends React.Component<NetworkDropDownProps, Netwo
             </div>
         );
     }
-    private _renderDropDownItems() {
+    private _renderDropDownItems(): React.ReactNode {
         const items = _.map(this.props.avialableNetworkIds, networkId => {
             const networkName = sharedConstants.NETWORK_NAME_BY_ID[networkId];
             const primaryText = (
diff --git a/packages/website/ts/components/eth_weth_conversion_button.tsx b/packages/website/ts/components/eth_weth_conversion_button.tsx
index 586d260fb..e8db42a7a 100644
--- a/packages/website/ts/components/eth_weth_conversion_button.tsx
+++ b/packages/website/ts/components/eth_weth_conversion_button.tsx
@@ -46,7 +46,7 @@ export class EthWethConversionButton extends React.Component<
             isEthConversionHappening: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const labelStyle = this.state.isEthConversionHappening ? { fontSize: 10 } : {};
         let callToActionLabel;
         let inProgressLabel;
@@ -81,12 +81,12 @@ export class EthWethConversionButton extends React.Component<
             </div>
         );
     }
-    private _toggleConversionDialog() {
+    private _toggleConversionDialog(): void {
         this.setState({
             isEthConversionDialogVisible: !this.state.isEthConversionDialogVisible,
         });
     }
-    private async _onConversionAmountSelectedAsync(direction: Side, value: BigNumber) {
+    private async _onConversionAmountSelectedAsync(direction: Side, value: BigNumber): Promise<void> {
         this.setState({
             isEthConversionHappening: true,
         });
diff --git a/packages/website/ts/components/eth_wrappers.tsx b/packages/website/ts/components/eth_wrappers.tsx
index 59afeb50b..f19b05861 100644
--- a/packages/website/ts/components/eth_wrappers.tsx
+++ b/packages/website/ts/components/eth_wrappers.tsx
@@ -65,7 +65,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             },
         };
     }
-    public componentWillReceiveProps(nextProps: EthWrappersProps) {
+    public componentWillReceiveProps(nextProps: EthWrappersProps): void {
         if (
             nextProps.userAddress !== this.props.userAddress ||
             nextProps.networkId !== this.props.networkId ||
@@ -75,15 +75,15 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             this._fetchWETHStateAsync();
         }
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.scrollTo(0, 0);
         // tslint:disable-next-line:no-floating-promises
         this._fetchWETHStateAsync();
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public render() {
+    public render(): React.ReactNode {
         const etherToken = this._getEthToken();
         const wethBalance = ZeroEx.toUnitAmount(this.state.ethTokenState.balance, constants.DECIMAL_PLACES_ETH);
         const isBidirectional = true;
@@ -222,7 +222,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             </div>
         );
     }
-    private _renderActionColumnTitle(isBidirectional: boolean) {
+    private _renderActionColumnTitle(isBidirectional: boolean): React.ReactNode {
         let iconClass = 'zmdi-long-arrow-right';
         let leftSymbol = 'WETH';
         let rightSymbol = 'ETH';
@@ -241,7 +241,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             </div>
         );
     }
-    private _renderOutdatedWeths(etherToken: Token, etherTokenState: TokenState) {
+    private _renderOutdatedWeths(etherToken: Token, etherTokenState: TokenState): React.ReactNode {
         const rows = _.map(
             configs.OUTDATED_WRAPPED_ETHERS,
             (outdatedWETHByNetworkId: OutdatedWrappedEtherByNetworkId) => {
@@ -313,7 +313,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         );
         return rows;
     }
-    private _renderTokenLink(tokenLabel: React.ReactNode, etherscanUrl: string) {
+    private _renderTokenLink(tokenLabel: React.ReactNode, etherscanUrl: string): React.ReactNode {
         return (
             <span>
                 {_.isUndefined(etherscanUrl) ? (
@@ -326,7 +326,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             </span>
         );
     }
-    private _renderToken(name: string, address: string, imgPath: string) {
+    private _renderToken(name: string, address: string, imgPath: string): React.ReactNode {
         const tooltipId = `tooltip-${address}`;
         return (
             <div className="flex">
@@ -340,7 +340,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             </div>
         );
     }
-    private async _onOutdatedConversionSuccessfulAsync(outdatedWETHAddress: string) {
+    private async _onOutdatedConversionSuccessfulAsync(outdatedWETHAddress: string): Promise<void> {
         const currentOutdatedWETHState = this.state.outdatedWETHStateByAddress[outdatedWETHAddress];
         this.setState({
             outdatedWETHStateByAddress: {
@@ -368,7 +368,7 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
             },
         });
     }
-    private async _fetchWETHStateAsync() {
+    private async _fetchWETHStateAsync(): Promise<void> {
         const tokens = _.values(this.props.tokenByAddress);
         const wethToken = _.find(tokens, token => token.symbol === 'WETH');
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
@@ -414,12 +414,12 @@ export class EthWrappers extends React.Component<EthWrappersProps, EthWrappersSt
         );
         return outdatedWETHAddresses;
     }
-    private _getEthToken() {
+    private _getEthToken(): Token {
         const tokens = _.values(this.props.tokenByAddress);
         const etherToken = _.find(tokens, { symbol: 'WETH' });
         return etherToken;
     }
-    private async _refetchEthTokenStateAsync() {
+    private async _refetchEthTokenStateAsync(): Promise<void> {
         const etherToken = this._getEthToken();
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
diff --git a/packages/website/ts/components/fill_order.tsx b/packages/website/ts/components/fill_order.tsx
index ea94e0987..59c32cebc 100644
--- a/packages/website/ts/components/fill_order.tsx
+++ b/packages/website/ts/components/fill_order.tsx
@@ -82,19 +82,19 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             tokensToTrack: [],
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         if (!_.isEmpty(this.state.orderJSON)) {
             // tslint:disable-next-line:no-floating-promises
             this._validateFillOrderFireAndForgetAsync(this.state.orderJSON);
         }
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.scrollTo(0, 0);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="clearfix lg-px4 md-px4 sm-px2" style={{ minHeight: 600 }}>
                 <h3>Fill an order</h3>
@@ -159,7 +159,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             </div>
         );
     }
-    private _renderOrderJsonNotices() {
+    private _renderOrderJsonNotices(): React.ReactNode {
         return (
             <div>
                 {!_.isUndefined(this.props.initialOrder) &&
@@ -177,7 +177,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             </div>
         );
     }
-    private _renderVisualOrder() {
+    private _renderVisualOrder(): React.ReactNode {
         const takerTokenAddress = this.state.parsedOrder.signedOrder.takerTokenAddress;
         const takerToken = this.props.tokenByAddress[takerTokenAddress];
         const orderTakerAmount = new BigNumber(this.state.parsedOrder.signedOrder.takerTokenAmount);
@@ -306,7 +306,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             </div>
         );
     }
-    private _renderFillSuccessMsg() {
+    private _renderFillSuccessMsg(): React.ReactNode {
         return (
             <div>
                 Order successfully filled. See the trade details in your{' '}
@@ -316,10 +316,10 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             </div>
         );
     }
-    private _renderCancelSuccessMsg() {
+    private _renderCancelSuccessMsg(): React.ReactNode {
         return <div>Order successfully cancelled.</div>;
     }
-    private _onFillOrderClick() {
+    private _onFillOrderClick(): void {
         if (!this.state.isMakerTokenAddressInRegistry || !this.state.isTakerTokenAddressInRegistry) {
             this.setState({
                 isFillWarningDialogOpen: true,
@@ -329,7 +329,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             this._onFillOrderClickFireAndForgetAsync();
         }
     }
-    private _onFillWarningClosed(didUserCancel: boolean) {
+    private _onFillWarningClosed(didUserCancel: boolean): void {
         this.setState({
             isFillWarningDialogOpen: false,
         });
@@ -338,10 +338,10 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             this._onFillOrderClickFireAndForgetAsync();
         }
     }
-    private _onFillAmountChange(isValid: boolean, amount?: BigNumber) {
+    private _onFillAmountChange(isValid: boolean, amount?: BigNumber): void {
         this.props.dispatcher.updateOrderFillAmount(amount);
     }
-    private _onFillOrderJSONChanged(event: any) {
+    private _onFillOrderJSONChanged(event: any): void {
         const orderJSON = event.target.value;
         this.setState({
             didOrderValidationRun: _.isEmpty(orderJSON) && _.isEmpty(this.state.orderJSONErrMsg),
@@ -350,7 +350,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
         // tslint:disable-next-line:no-floating-promises
         this._validateFillOrderFireAndForgetAsync(orderJSON);
     }
-    private async _checkForUntrackedTokensAndAskToAdd() {
+    private async _checkForUntrackedTokensAndAskToAddAsync(): Promise<void> {
         if (!_.isEmpty(this.state.orderJSONErrMsg)) {
             return;
         }
@@ -396,7 +396,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             });
         }
     }
-    private async _validateFillOrderFireAndForgetAsync(orderJSON: string) {
+    private async _validateFillOrderFireAndForgetAsync(orderJSON: string): Promise<void> {
         let orderJSONErrMsg = '';
         let parsedOrder: Order;
         let orderHash: string;
@@ -491,7 +491,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
             unavailableTakerAmount,
         });
 
-        await this._checkForUntrackedTokensAndAskToAdd();
+        await this._checkForUntrackedTokensAndAskToAddAsync();
     }
     private async _onFillOrderClickFireAndForgetAsync(): Promise<void> {
         if (this.props.blockchainErr !== BlockchainErrs.NoError || _.isEmpty(this.props.userAddress)) {
@@ -650,7 +650,7 @@ export class FillOrder extends React.Component<FillOrderProps, FillOrderState> {
         const roundedUnitAmount = Math.round(unitAmount.toNumber() * 100000) / 100000;
         return roundedUnitAmount;
     }
-    private _onToggleTrackConfirmDialog(didConfirmTokenTracking: boolean) {
+    private _onToggleTrackConfirmDialog(didConfirmTokenTracking: boolean): void {
         if (!didConfirmTokenTracking) {
             this.setState({
                 orderJSON: '',
diff --git a/packages/website/ts/components/fill_order_json.tsx b/packages/website/ts/components/fill_order_json.tsx
index 7d5351ec4..97297d5a1 100644
--- a/packages/website/ts/components/fill_order_json.tsx
+++ b/packages/website/ts/components/fill_order_json.tsx
@@ -19,7 +19,7 @@ interface FillOrderJSONProps {
 interface FillOrderJSONState {}
 
 export class FillOrderJSON extends React.Component<FillOrderJSONProps, FillOrderJSONState> {
-    public render() {
+    public render(): React.ReactNode {
         const tokenAddresses = _.keys(this.props.tokenByAddress);
         const exchangeContract = this.props.blockchain.getExchangeContractAddressIfExists();
         const hintSideToAssetToken = {
diff --git a/packages/website/ts/components/fill_warning_dialog.tsx b/packages/website/ts/components/fill_warning_dialog.tsx
index d3215a6c1..83095b1d3 100644
--- a/packages/website/ts/components/fill_warning_dialog.tsx
+++ b/packages/website/ts/components/fill_warning_dialog.tsx
@@ -8,7 +8,7 @@ interface FillWarningDialogProps {
     onToggleDialog: (didUserCancel: boolean) => void;
 }
 
-export function FillWarningDialog(props: FillWarningDialogProps) {
+export const FillWarningDialog = (props: FillWarningDialogProps) => {
     const didCancel = true;
     return (
         <Dialog
@@ -42,4 +42,4 @@ export function FillWarningDialog(props: FillWarningDialogProps) {
             </div>
         </Dialog>
     );
-}
+};
diff --git a/packages/website/ts/components/flash_messages/token_send_completed.tsx b/packages/website/ts/components/flash_messages/token_send_completed.tsx
index a3b056758..bb5adfa4e 100644
--- a/packages/website/ts/components/flash_messages/token_send_completed.tsx
+++ b/packages/website/ts/components/flash_messages/token_send_completed.tsx
@@ -16,7 +16,7 @@ interface TokenSendCompletedProps {
 interface TokenSendCompletedState {}
 
 export class TokenSendCompleted extends React.Component<TokenSendCompletedProps, TokenSendCompletedState> {
-    public render() {
+    public render(): React.ReactNode {
         const etherScanLink = !_.isUndefined(this.props.etherScanLinkIfExists) && (
             <a style={{ color: colors.white }} href={`${this.props.etherScanLinkIfExists}`} target="_blank">
                 Verify on Etherscan
diff --git a/packages/website/ts/components/flash_messages/transaction_submitted.tsx b/packages/website/ts/components/flash_messages/transaction_submitted.tsx
index 188f1f9a6..2a6d2a64b 100644
--- a/packages/website/ts/components/flash_messages/transaction_submitted.tsx
+++ b/packages/website/ts/components/flash_messages/transaction_submitted.tsx
@@ -9,7 +9,7 @@ interface TransactionSubmittedProps {
 interface TransactionSubmittedState {}
 
 export class TransactionSubmitted extends React.Component<TransactionSubmittedProps, TransactionSubmittedState> {
-    public render() {
+    public render(): React.ReactNode {
         if (_.isUndefined(this.props.etherScanLinkIfExists)) {
             return <div>Transaction submitted to the network</div>;
         } else {
diff --git a/packages/website/ts/components/footer.tsx b/packages/website/ts/components/footer.tsx
index 487b039b2..c44e41084 100644
--- a/packages/website/ts/components/footer.tsx
+++ b/packages/website/ts/components/footer.tsx
@@ -50,7 +50,7 @@ export class Footer extends React.Component<FooterProps, FooterState> {
             selectedLanguage: props.translate.getLanguage(),
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const menuItemsBySection: MenuItemsBySection = {
             [Key.Documentation]: [
                 {
@@ -180,14 +180,14 @@ export class Footer extends React.Component<FooterProps, FooterState> {
             </div>
         );
     }
-    private _renderIcon(fileName: string) {
+    private _renderIcon(fileName: string): React.ReactNode {
         return (
             <div style={{ height: ICON_DIMENSION, width: ICON_DIMENSION }}>
                 <img src={`/images/social/${fileName}`} style={{ width: ICON_DIMENSION }} />
             </div>
         );
     }
-    private _renderMenuItem(item: FooterMenuItem) {
+    private _renderMenuItem(item: FooterMenuItem): React.ReactNode {
         const titleToIcon: { [title: string]: string } = {
             [this.props.translate.get(Key.RocketChat, Deco.Cap)]: 'rocketchat.png',
             [this.props.translate.get(Key.Blog, Deco.Cap)]: 'medium.png',
@@ -222,7 +222,7 @@ export class Footer extends React.Component<FooterProps, FooterState> {
             </div>
         );
     }
-    private _renderHeader(key: Key) {
+    private _renderHeader(key: Key): React.ReactNode {
         const headerStyle = {
             color: colors.grey400,
             letterSpacing: 2,
@@ -235,7 +235,7 @@ export class Footer extends React.Component<FooterProps, FooterState> {
             </div>
         );
     }
-    private _updateLanguage(e: any, index: number, value: Language) {
+    private _updateLanguage(e: any, index: number, value: Language): void {
         this.setState({
             selectedLanguage: value,
         });
diff --git a/packages/website/ts/components/generate_order/asset_picker.tsx b/packages/website/ts/components/generate_order/asset_picker.tsx
index 69fb32a21..d7cc554c4 100644
--- a/packages/website/ts/components/generate_order/asset_picker.tsx
+++ b/packages/website/ts/components/generate_order/asset_picker.tsx
@@ -79,7 +79,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             },
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const dialogConfigs: DialogConfigs = this._dialogConfigsByAssetView[this.state.assetView];
         return (
             <Dialog
@@ -102,7 +102,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             </Dialog>
         );
     }
-    private _renderConfirmTrackToken() {
+    private _renderConfirmTrackToken(): React.ReactNode {
         const token = this.props.tokenByAddress[this.state.chosenTrackTokenAddress];
         return (
             <TrackTokenConfirmation
@@ -113,7 +113,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             />
         );
     }
-    private _renderAssetPicker() {
+    private _renderAssetPicker(): React.ReactNode {
         return (
             <div
                 className="clearfix flex flex-wrap"
@@ -128,7 +128,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             </div>
         );
     }
-    private _renderGridTiles() {
+    private _renderGridTiles(): React.ReactNode {
         let isHovered;
         let tileStyles;
         const gridTiles = _.map(this.props.tokenByAddress, (token: Token, address: string) => {
@@ -195,19 +195,19 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
         }
         return gridTiles;
     }
-    private _onToggleHover(address: string, isHovered: boolean) {
+    private _onToggleHover(address: string, isHovered: boolean): void {
         const hoveredAddress = isHovered ? address : undefined;
         this.setState({
             hoveredAddress,
         });
     }
-    private _onCloseDialog() {
+    private _onCloseDialog(): void {
         this.setState({
             assetView: AssetViews.ASSET_PICKER,
         });
         this.props.onTokenChosen(this.props.currentTokenAddress);
     }
-    private _onChooseToken(tokenAddress: string) {
+    private _onChooseToken(tokenAddress: string): void {
         const token = this.props.tokenByAddress[tokenAddress];
         if (token.isTracked) {
             this.props.onTokenChosen(tokenAddress);
@@ -218,12 +218,12 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
             });
         }
     }
-    private _onCustomAssetChosen() {
+    private _onCustomAssetChosen(): void {
         this.setState({
             assetView: AssetViews.NEW_TOKEN_FORM,
         });
     }
-    private _onNewTokenSubmitted(newToken: Token) {
+    private _onNewTokenSubmitted(newToken: Token): void {
         trackedTokenStorage.addTrackedTokenToUser(this.props.userAddress, this.props.networkId, newToken);
         this.props.dispatcher.addTokenToTokenByAddress(newToken);
         this.setState({
@@ -231,7 +231,7 @@ export class AssetPicker extends React.Component<AssetPickerProps, AssetPickerSt
         });
         this.props.onTokenChosen(newToken.address);
     }
-    private async _onTrackConfirmationRespondedAsync(didUserAcceptTracking: boolean) {
+    private async _onTrackConfirmationRespondedAsync(didUserAcceptTracking: boolean): Promise<void> {
         if (!didUserAcceptTracking) {
             this.setState({
                 isAddingTokenToTracked: false,
diff --git a/packages/website/ts/components/generate_order/generate_order_form.tsx b/packages/website/ts/components/generate_order/generate_order_form.tsx
index eb76cb529..d46c29058 100644
--- a/packages/website/ts/components/generate_order/generate_order_form.tsx
+++ b/packages/website/ts/components/generate_order/generate_order_form.tsx
@@ -63,10 +63,10 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
             signingState: SigningState.UNSIGNED,
         };
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.scrollTo(0, 0);
     }
-    public render() {
+    public render(): React.ReactNode {
         const dispatcher = this.props.dispatcher;
         const depositTokenAddress = this.props.sideToAssetToken[Side.Deposit].address;
         const depositToken = this.props.tokenByAddress[depositTokenAddress];
@@ -214,13 +214,13 @@ export class GenerateOrderForm extends React.Component<GenerateOrderFormProps, G
             </div>
         );
     }
-    private _onTokenAmountChange(token: Token, side: Side, isValid: boolean, amount?: BigNumber) {
+    private _onTokenAmountChange(token: Token, side: Side, isValid: boolean, amount?: BigNumber): void {
         this.props.dispatcher.updateChosenAssetToken(side, {
             address: token.address,
             amount,
         });
     }
-    private _onCloseOrderJSONDialog() {
+    private _onCloseOrderJSONDialog(): void {
         // Upon closing the order JSON dialog, we update the orderSalt stored in the Redux store
         // with a new value so that if a user signs the identical order again, the newly signed
         // orderHash will not collide with the previously generated orderHash.
diff --git a/packages/website/ts/components/generate_order/new_token_form.tsx b/packages/website/ts/components/generate_order/new_token_form.tsx
index e7f3b93c6..10f71b430 100644
--- a/packages/website/ts/components/generate_order/new_token_form.tsx
+++ b/packages/website/ts/components/generate_order/new_token_form.tsx
@@ -42,7 +42,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             decimalsErrText: '',
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="mx-auto pb2" style={{ width: 256 }}>
                 <div>
@@ -96,7 +96,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             </div>
         );
     }
-    private async _onAddNewTokenClickAsync() {
+    private async _onAddNewTokenClickAsync(): Promise<void> {
         // Trigger validation of name and symbol
         this._onTokenNameChanged(undefined, this.state.name);
         this._onTokenSymbolChanged(undefined, this.state.symbol);
@@ -152,7 +152,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
         };
         this.props.onNewTokenSubmitted(newToken);
     }
-    private _onTokenNameChanged(e: any, name: string) {
+    private _onTokenNameChanged(e: any, name: string): void {
         let nameErrText = '';
         const maxLength = 30;
         const tokens = _.values(this.props.tokenByAddress);
@@ -173,7 +173,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             nameErrText,
         });
     }
-    private _onTokenSymbolChanged(e: any, symbol: string) {
+    private _onTokenSymbolChanged(e: any, symbol: string): void {
         let symbolErrText = '';
         const maxLength = 5;
         const tokens = _.values(this.props.tokenByAddress);
@@ -193,7 +193,7 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             symbolErrText,
         });
     }
-    private _onTokenDecimalsChanged(e: any, decimals: string) {
+    private _onTokenDecimalsChanged(e: any, decimals: string): void {
         let decimalsErrText = '';
         const maxLength = 2;
         if (decimals === '') {
@@ -209,20 +209,20 @@ export class NewTokenForm extends React.Component<NewTokenFormProps, NewTokenFor
             decimalsErrText,
         });
     }
-    private _onTokenAddressChanged(address?: string) {
+    private _onTokenAddressChanged(address?: string): void {
         if (!_.isUndefined(address)) {
             this.setState({
                 address,
             });
         }
     }
-    private _isValidName(input: string) {
+    private _isValidName(input: string): boolean {
         return /^[a-z0-9 ]+$/i.test(input);
     }
-    private _isInteger(input: string) {
+    private _isInteger(input: string): boolean {
         return /^[0-9]+$/i.test(input);
     }
-    private _isAlphanumeric(input: string) {
+    private _isAlphanumeric(input: string): boolean {
         return /^[a-zA-Z0-9]+$/i.test(input);
     }
 }
diff --git a/packages/website/ts/components/inputs/address_input.tsx b/packages/website/ts/components/inputs/address_input.tsx
index 7ca4af968..39ec72f8a 100644
--- a/packages/website/ts/components/inputs/address_input.tsx
+++ b/packages/website/ts/components/inputs/address_input.tsx
@@ -29,14 +29,14 @@ export class AddressInput extends React.Component<AddressInputProps, AddressInpu
             errMsg: '',
         };
     }
-    public componentWillReceiveProps(nextProps: AddressInputProps) {
+    public componentWillReceiveProps(nextProps: AddressInputProps): void {
         if (nextProps.shouldShowIncompleteErrs && this.props.isRequired && this.state.address === '') {
             this.setState({
                 errMsg: 'Address is required',
             });
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         const label = this.props.isRequired ? <RequiredLabel label={this.props.label} /> : this.props.label;
         const labelDisplay = this.props.shouldHideLabel ? 'hidden' : 'block';
         const hintText = this.props.hintText ? this.props.hintText : '';
@@ -57,7 +57,7 @@ export class AddressInput extends React.Component<AddressInputProps, AddressInpu
             </div>
         );
     }
-    private _onOrderTakerAddressUpdated(e: any) {
+    private _onOrderTakerAddressUpdated(e: any): void {
         const address = e.target.value.toLowerCase();
         const isValidAddress = addressUtils.isAddress(address) || address === '';
         const errMsg = isValidAddress ? '' : 'Invalid ethereum address';
diff --git a/packages/website/ts/components/inputs/allowance_toggle.tsx b/packages/website/ts/components/inputs/allowance_toggle.tsx
index cfe75b751..48c7f9f57 100644
--- a/packages/website/ts/components/inputs/allowance_toggle.tsx
+++ b/packages/website/ts/components/inputs/allowance_toggle.tsx
@@ -63,7 +63,7 @@ export class AllowanceToggle extends React.Component<AllowanceToggleProps, Allow
             prevAllowance: props.tokenState.allowance,
         };
     }
-    public componentWillReceiveProps(nextProps: AllowanceToggleProps) {
+    public componentWillReceiveProps(nextProps: AllowanceToggleProps): void {
         if (!nextProps.tokenState.allowance.eq(this.state.prevAllowance)) {
             this.setState({
                 isSpinnerVisible: false,
@@ -71,7 +71,7 @@ export class AllowanceToggle extends React.Component<AllowanceToggleProps, Allow
             });
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="flex">
                 <div>
@@ -128,7 +128,7 @@ export class AllowanceToggle extends React.Component<AllowanceToggleProps, Allow
             await errorReporter.reportAsync(err);
         }
     }
-    private _isAllowanceSet() {
+    private _isAllowanceSet(): boolean {
         return !this.props.tokenState.allowance.eq(0);
     }
 }
diff --git a/packages/website/ts/components/inputs/balance_bounded_input.tsx b/packages/website/ts/components/inputs/balance_bounded_input.tsx
index e9b8dd369..68b77cfc3 100644
--- a/packages/website/ts/components/inputs/balance_bounded_input.tsx
+++ b/packages/website/ts/components/inputs/balance_bounded_input.tsx
@@ -46,7 +46,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
             amountString,
         };
     }
-    public componentWillReceiveProps(nextProps: BalanceBoundedInputProps) {
+    public componentWillReceiveProps(nextProps: BalanceBoundedInputProps): void {
         if (nextProps === this.props) {
             return;
         }
@@ -76,7 +76,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
             });
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         let errorText;
         if (this.props.shouldShowErrs) {
             errorText =
@@ -104,7 +104,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
             />
         );
     }
-    private _onValueChange(e: any, amountString: string) {
+    private _onValueChange(e: any, amountString: string): void {
         const errMsg = this._validate(amountString, this.props.balance);
         this.setState(
             {
@@ -135,7 +135,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
         const errMsg = _.isUndefined(this.props.validate) ? undefined : this.props.validate(amount);
         return errMsg;
     }
-    private _renderIncreaseBalanceLink() {
+    private _renderIncreaseBalanceLink(): React.ReactNode {
         if (this.props.shouldHideVisitBalancesLink) {
             return null;
         }
diff --git a/packages/website/ts/components/inputs/eth_amount_input.tsx b/packages/website/ts/components/inputs/eth_amount_input.tsx
index f3a879065..c3822a80b 100644
--- a/packages/website/ts/components/inputs/eth_amount_input.tsx
+++ b/packages/website/ts/components/inputs/eth_amount_input.tsx
@@ -29,7 +29,7 @@ export class EthAmountInput extends React.Component<EthAmountInputProps, EthAmou
         shouldShowUnderline: true,
         style: { height: 63 },
     };
-    public render() {
+    public render(): React.ReactNode {
         const amount = this.props.amount
             ? ZeroEx.toUnitAmount(this.props.amount, constants.DECIMAL_PLACES_ETH)
             : undefined;
@@ -52,7 +52,7 @@ export class EthAmountInput extends React.Component<EthAmountInputProps, EthAmou
             </div>
         );
     }
-    private _onChange(isValid: boolean, amount?: BigNumber) {
+    private _onChange(isValid: boolean, amount?: BigNumber): void {
         const baseUnitAmountIfExists = _.isUndefined(amount)
             ? undefined
             : ZeroEx.toBaseUnitAmount(amount, constants.DECIMAL_PLACES_ETH);
diff --git a/packages/website/ts/components/inputs/expiration_input.tsx b/packages/website/ts/components/inputs/expiration_input.tsx
index e473648d2..5c68080fe 100644
--- a/packages/website/ts/components/inputs/expiration_input.tsx
+++ b/packages/website/ts/components/inputs/expiration_input.tsx
@@ -30,7 +30,7 @@ export class ExpirationInput extends React.Component<ExpirationInputProps, Expir
             timeMoment: didUserSetExpiry ? expirationMoment : undefined,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const date = this.state.dateMoment ? this.state.dateMoment.toDate() : undefined;
         const time = this.state.timeMoment ? this.state.timeMoment.toDate() : undefined;
         return (
@@ -72,7 +72,7 @@ export class ExpirationInput extends React.Component<ExpirationInputProps, Expir
             .startOf('day')
             .isBefore(this._earliestPickableMoment);
     }
-    private _clearDates() {
+    private _clearDates(): void {
         this.setState({
             dateMoment: undefined,
             timeMoment: undefined,
@@ -80,7 +80,7 @@ export class ExpirationInput extends React.Component<ExpirationInputProps, Expir
         const defaultDateTime = utils.initialOrderExpiryUnixTimestampSec();
         this.props.updateOrderExpiry(defaultDateTime);
     }
-    private _onDateChanged(e: any, date: Date) {
+    private _onDateChanged(e: any, date: Date): void {
         const dateMoment = moment(date);
         this.setState({
             dateMoment,
@@ -88,7 +88,7 @@ export class ExpirationInput extends React.Component<ExpirationInputProps, Expir
         const timestamp = utils.convertToUnixTimestampSeconds(dateMoment, this.state.timeMoment);
         this.props.updateOrderExpiry(timestamp);
     }
-    private _onTimeChanged(e: any, time: Date) {
+    private _onTimeChanged(e: any, time: Date): void {
         const timeMoment = moment(time);
         this.setState({
             timeMoment,
diff --git a/packages/website/ts/components/inputs/hash_input.tsx b/packages/website/ts/components/inputs/hash_input.tsx
index 28305637d..37d4af138 100644
--- a/packages/website/ts/components/inputs/hash_input.tsx
+++ b/packages/website/ts/components/inputs/hash_input.tsx
@@ -27,7 +27,7 @@ interface HashInputProps {
 interface HashInputState {}
 
 export class HashInput extends React.Component<HashInputProps, HashInputState> {
-    public render() {
+    public render(): React.ReactNode {
         const msgHashHex = this.props.blockchainIsLoaded ? this._generateMessageHashHex() : '';
         return (
             <div>
@@ -40,7 +40,7 @@ export class HashInput extends React.Component<HashInputProps, HashInputState> {
             </div>
         );
     }
-    private _generateMessageHashHex() {
+    private _generateMessageHashHex(): string {
         const exchangeContractAddress = this.props.blockchain.getExchangeContractAddressIfExists();
         const hashData = this.props.hashData;
         const order: Order = {
diff --git a/packages/website/ts/components/inputs/identicon_address_input.tsx b/packages/website/ts/components/inputs/identicon_address_input.tsx
index 4cf9af64d..a4dc01ba8 100644
--- a/packages/website/ts/components/inputs/identicon_address_input.tsx
+++ b/packages/website/ts/components/inputs/identicon_address_input.tsx
@@ -23,7 +23,7 @@ export class IdenticonAddressInput extends React.Component<IdenticonAddressInput
             address: props.initialAddress,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const label = this.props.isRequired ? <RequiredLabel label={this.props.label} /> : this.props.label;
         return (
             <div className="relative" style={{ width: '100%' }}>
diff --git a/packages/website/ts/components/inputs/token_amount_input.tsx b/packages/website/ts/components/inputs/token_amount_input.tsx
index 9e638b67b..9a74bdd51 100644
--- a/packages/website/ts/components/inputs/token_amount_input.tsx
+++ b/packages/website/ts/components/inputs/token_amount_input.tsx
@@ -52,14 +52,14 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
             isBalanceAndAllowanceLoaded: false,
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         // tslint:disable-next-line:no-floating-promises
         this._fetchBalanceAndAllowanceAsync(this.props.token.address, this.props.userAddress);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public componentWillReceiveProps(nextProps: TokenAmountInputProps) {
+    public componentWillReceiveProps(nextProps: TokenAmountInputProps): void {
         if (
             nextProps.userAddress !== this.props.userAddress ||
             nextProps.networkId !== this.props.networkId ||
@@ -70,7 +70,7 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
             this._fetchBalanceAndAllowanceAsync(nextProps.token.address, nextProps.userAddress);
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         const amount = this.props.amount
             ? ZeroEx.toUnitAmount(this.props.amount, this.props.token.decimals)
             : undefined;
@@ -98,7 +98,7 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
             </div>
         );
     }
-    private _onChange(isValid: boolean, amount?: BigNumber) {
+    private _onChange(isValid: boolean, amount?: BigNumber): void {
         let baseUnitAmount;
         if (!_.isUndefined(amount)) {
             baseUnitAmount = ZeroEx.toBaseUnitAmount(amount, this.props.token.decimals);
@@ -122,7 +122,7 @@ export class TokenAmountInput extends React.Component<TokenAmountInputProps, Tok
             return undefined;
         }
     }
-    private async _fetchBalanceAndAllowanceAsync(tokenAddress: string, userAddress: string) {
+    private async _fetchBalanceAndAllowanceAsync(tokenAddress: string, userAddress: string): Promise<void> {
         this.setState({
             isBalanceAndAllowanceLoaded: false,
         });
diff --git a/packages/website/ts/components/inputs/token_input.tsx b/packages/website/ts/components/inputs/token_input.tsx
index 545e9a095..c2c4dd63b 100644
--- a/packages/website/ts/components/inputs/token_input.tsx
+++ b/packages/website/ts/components/inputs/token_input.tsx
@@ -38,7 +38,7 @@ export class TokenInput extends React.Component<TokenInputProps, TokenInputState
             isPickerOpen: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const token = this.props.tokenByAddress[this.props.assetToken.address];
         const iconStyles = {
             cursor: 'pointer',
@@ -76,7 +76,7 @@ export class TokenInput extends React.Component<TokenInputProps, TokenInputState
             </div>
         );
     }
-    private _onTokenChosen(tokenAddress: string) {
+    private _onTokenChosen(tokenAddress: string): void {
         const assetToken: AssetToken = {
             address: tokenAddress,
             amount: this.props.assetToken.amount,
@@ -86,12 +86,12 @@ export class TokenInput extends React.Component<TokenInputProps, TokenInputState
             isPickerOpen: false,
         });
     }
-    private _onToggleHover(isHoveringIcon: boolean) {
+    private _onToggleHover(isHoveringIcon: boolean): void {
         this.setState({
             isHoveringIcon,
         });
     }
-    private _onAssetClicked() {
+    private _onAssetClicked(): void {
         if (this.props.blockchainErr !== BlockchainErrs.NoError) {
             this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen(true);
             return;
diff --git a/packages/website/ts/components/legacy_portal/legacy_portal.tsx b/packages/website/ts/components/legacy_portal/legacy_portal.tsx
index c45b20365..002b258fb 100644
--- a/packages/website/ts/components/legacy_portal/legacy_portal.tsx
+++ b/packages/website/ts/components/legacy_portal/legacy_portal.tsx
@@ -79,7 +79,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
     private _blockchain: Blockchain;
     private _sharedOrderIfExists: Order;
     private _throttledScreenWidthUpdate: () => void;
-    public static hasAlreadyDismissedWethNotice() {
+    public static hasAlreadyDismissedWethNotice(): boolean {
         const didDismissWethNotice = localStorage.getItemIfExists(constants.LOCAL_STORAGE_KEY_DISMISS_WETH_NOTICE);
         const hasAlreadyDismissedWethNotice = !_.isUndefined(didDismissWethNotice) && !_.isEmpty(didDismissWethNotice);
         return hasAlreadyDismissedWethNotice;
@@ -105,14 +105,14 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             isLedgerDialogOpen: false,
         };
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.addEventListener('resize', this._throttledScreenWidthUpdate);
         window.scrollTo(0, 0);
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         this._blockchain = new Blockchain(this.props.dispatcher);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._blockchain.destroy();
         window.removeEventListener('resize', this._throttledScreenWidthUpdate);
         // We re-set the entire redux state when the portal is unmounted so that when it is re-rendered
@@ -121,7 +121,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
         // become disconnected from their backing Ethereum node, changes user accounts, etc...)
         this.props.dispatcher.resetState();
     }
-    public componentWillReceiveProps(nextProps: LegacyPortalProps) {
+    public componentWillReceiveProps(nextProps: LegacyPortalProps): void {
         if (nextProps.networkId !== this.state.prevNetworkId) {
             // tslint:disable-next-line:no-floating-promises
             this._blockchain.networkIdUpdatedFireAndForgetAsync(nextProps.networkId);
@@ -150,7 +150,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             });
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         const updateShouldBlockchainErrDialogBeOpen = this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen.bind(
             this.props.dispatcher,
         );
@@ -276,12 +276,12 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             </div>
         );
     }
-    public onToggleLedgerDialog() {
+    public onToggleLedgerDialog(): void {
         this.setState({
             isLedgerDialogOpen: !this.state.isLedgerDialogOpen,
         });
     }
-    private _renderEthWrapper() {
+    private _renderEthWrapper(): React.ReactNode {
         return (
             <EthWrappers
                 networkId={this.props.networkId}
@@ -294,7 +294,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             />
         );
     }
-    private _renderTradeHistory() {
+    private _renderTradeHistory(): React.ReactNode {
         return (
             <TradeHistory
                 tokenByAddress={this.props.tokenByAddress}
@@ -303,7 +303,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             />
         );
     }
-    private _renderTokenBalances() {
+    private _renderTokenBalances(): React.ReactNode {
         const allTokens = _.values(this.props.tokenByAddress);
         const trackedTokens = _.filter(allTokens, t => t.isTracked);
         return (
@@ -322,7 +322,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             />
         );
     }
-    private _renderFillOrder(match: any, location: Location, history: History) {
+    private _renderFillOrder(match: any, location: Location, history: History): React.ReactNode {
         const initialFillOrder = !_.isUndefined(this.props.userSuppliedOrderCache)
             ? this.props.userSuppliedOrderCache
             : this._sharedOrderIfExists;
@@ -341,7 +341,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             />
         );
     }
-    private _renderGenerateOrderForm(match: any, location: Location, history: History) {
+    private _renderGenerateOrderForm(match: any, location: Location, history: History): React.ReactNode {
         return (
             <GenerateOrderForm
                 blockchain={this._blockchain}
@@ -350,13 +350,13 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
             />
         );
     }
-    private _onPortalDisclaimerAccepted() {
+    private _onPortalDisclaimerAccepted(): void {
         localStorage.setItem(constants.LOCAL_STORAGE_KEY_ACCEPT_DISCLAIMER, 'set');
         this.setState({
             isDisclaimerDialogOpen: false,
         });
     }
-    private _onWethNoticeAccepted() {
+    private _onWethNoticeAccepted(): void {
         localStorage.setItem(constants.LOCAL_STORAGE_KEY_DISMISS_WETH_NOTICE, 'set');
         this.setState({
             isWethNoticeDialogOpen: false,
@@ -388,7 +388,7 @@ export class LegacyPortal extends React.Component<LegacyPortalProps, LegacyPorta
         }
         return order;
     }
-    private _updateScreenWidth() {
+    private _updateScreenWidth(): void {
         const newScreenWidth = utils.getScreenWidth();
         this.props.dispatcher.updateScreenWidth(newScreenWidth);
     }
diff --git a/packages/website/ts/components/legacy_portal/legacy_portal_menu.tsx b/packages/website/ts/components/legacy_portal/legacy_portal_menu.tsx
index 94113f066..7469ca14e 100644
--- a/packages/website/ts/components/legacy_portal/legacy_portal_menu.tsx
+++ b/packages/website/ts/components/legacy_portal/legacy_portal_menu.tsx
@@ -15,7 +15,7 @@ export class LegacyPortalMenu extends React.Component<LegacyPortalMenuProps, Leg
     public static defaultProps: Partial<LegacyPortalMenuProps> = {
         onClick: _.noop,
     };
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div>
                 <MenuItem
@@ -61,7 +61,7 @@ export class LegacyPortalMenu extends React.Component<LegacyPortalMenuProps, Leg
             </div>
         );
     }
-    private _renderMenuItemWithIcon(title: string, iconName: string) {
+    private _renderMenuItemWithIcon(title: string, iconName: string): React.ReactNode {
         return (
             <div className="flex" style={{ fontWeight: 100 }}>
                 <div className="pr1 pl2">
diff --git a/packages/website/ts/components/order_json.tsx b/packages/website/ts/components/order_json.tsx
index 02b88b888..6feefea50 100644
--- a/packages/website/ts/components/order_json.tsx
+++ b/packages/website/ts/components/order_json.tsx
@@ -38,7 +38,7 @@ export class OrderJSON extends React.Component<OrderJSONProps, OrderJSONState> {
         // tslint:disable-next-line:no-floating-promises
         this._setShareLinkAsync();
     }
-    public render() {
+    public render(): React.ReactNode {
         const order = utils.generateOrder(
             this.props.exchangeContractIfExists,
             this.props.sideToAssetToken,
@@ -116,11 +116,11 @@ export class OrderJSON extends React.Component<OrderJSONProps, OrderJSONState> {
             </div>
         );
     }
-    private async _shareViaTwitterAsync() {
+    private _shareViaTwitterAsync(): void {
         const tweetText = encodeURIComponent(`Fill my order using the 0x protocol: ${this.state.shareLink}`);
         window.open(`https://twitter.com/intent/tweet?text=${tweetText}`, 'Share your order', 'width=500,height=400');
     }
-    private async _shareViaFacebook() {
+    private _shareViaFacebook(): void {
         (window as any).FB.ui(
             {
                 display: 'popup',
@@ -130,14 +130,14 @@ export class OrderJSON extends React.Component<OrderJSONProps, OrderJSONState> {
             _.noop,
         );
     }
-    private async _shareViaEmailAsync() {
+    private _shareViaEmailAsync(): void {
         const encodedSubject = encodeURIComponent("Let's trade using the 0x protocol");
         const encodedBody = encodeURIComponent(`I generated an order with the 0x protocol.
 You can see and fill it here: ${this.state.shareLink}`);
         const mailToLink = `mailto:mail@example.org?subject=${encodedSubject}&body=${encodedBody}`;
         window.open(mailToLink, '_blank');
     }
-    private async _setShareLinkAsync() {
+    private async _setShareLinkAsync(): Promise<void> {
         const shareLink = await this._generateShareLinkAsync();
         this.setState({
             shareLink,
@@ -159,7 +159,7 @@ You can see and fill it here: ${this.state.shareLink}`);
         }
         return bodyObj.data.url;
     }
-    private _getOrderUrl() {
+    private _getOrderUrl(): string {
         const order = utils.generateOrder(
             this.props.exchangeContractIfExists,
             this.props.sideToAssetToken,
diff --git a/packages/website/ts/components/portal/portal.tsx b/packages/website/ts/components/portal/portal.tsx
index 4cbc65ce4..e572b7911 100644
--- a/packages/website/ts/components/portal/portal.tsx
+++ b/packages/website/ts/components/portal/portal.tsx
@@ -102,14 +102,14 @@ export class Portal extends React.Component<PortalProps, PortalState> {
             isLedgerDialogOpen: false,
         };
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.addEventListener('resize', this._throttledScreenWidthUpdate);
         window.scrollTo(0, 0);
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         this._blockchain = new Blockchain(this.props.dispatcher);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._blockchain.destroy();
         window.removeEventListener('resize', this._throttledScreenWidthUpdate);
         // We re-set the entire redux state when the portal is unmounted so that when it is re-rendered
@@ -118,7 +118,7 @@ export class Portal extends React.Component<PortalProps, PortalState> {
         // become disconnected from their backing Ethereum node, changed user accounts, etc...)
         this.props.dispatcher.resetState();
     }
-    public componentWillReceiveProps(nextProps: PortalProps) {
+    public componentWillReceiveProps(nextProps: PortalProps): void {
         if (nextProps.networkId !== this.state.prevNetworkId) {
             // tslint:disable-next-line:no-floating-promises
             this._blockchain.networkIdUpdatedFireAndForgetAsync(nextProps.networkId);
@@ -144,7 +144,7 @@ export class Portal extends React.Component<PortalProps, PortalState> {
             });
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         const updateShouldBlockchainErrDialogBeOpen = this.props.dispatcher.updateShouldBlockchainErrDialogBeOpen.bind(
             this.props.dispatcher,
         );
@@ -241,7 +241,7 @@ export class Portal extends React.Component<PortalProps, PortalState> {
             </div>
         );
     }
-    private _onTokenChosen(tokenAddress: string) {
+    private _onTokenChosen(tokenAddress: string): void {
         if (_.isEmpty(tokenAddress)) {
             this.setState({
                 tokenManagementState: TokenManagementState.None,
@@ -269,28 +269,28 @@ export class Portal extends React.Component<PortalProps, PortalState> {
             tokenManagementState: TokenManagementState.None,
         });
     }
-    private _onToggleLedgerDialog() {
+    private _onToggleLedgerDialog(): void {
         this.setState({
             isLedgerDialogOpen: !this.state.isLedgerDialogOpen,
         });
     }
-    private _onAddToken() {
+    private _onAddToken(): void {
         this.setState({
             tokenManagementState: TokenManagementState.Add,
         });
     }
-    private _onRemoveToken() {
+    private _onRemoveToken(): void {
         this.setState({
             tokenManagementState: TokenManagementState.Remove,
         });
     }
-    private _onPortalDisclaimerAccepted() {
+    private _onPortalDisclaimerAccepted(): void {
         localStorage.setItem(constants.LOCAL_STORAGE_KEY_ACCEPT_DISCLAIMER, 'set');
         this.setState({
             isDisclaimerDialogOpen: false,
         });
     }
-    private _updateScreenWidth() {
+    private _updateScreenWidth(): void {
         const newScreenWidth = utils.getScreenWidth();
         this.props.dispatcher.updateScreenWidth(newScreenWidth);
     }
diff --git a/packages/website/ts/components/redirecter.tsx b/packages/website/ts/components/redirecter.tsx
index 2e705af58..629522bbb 100644
--- a/packages/website/ts/components/redirecter.tsx
+++ b/packages/website/ts/components/redirecter.tsx
@@ -5,6 +5,6 @@ interface RedirecterProps {
     location: string;
 }
 
-export function Redirecter(props: RedirecterProps) {
+export function Redirecter(props: RedirecterProps): void {
     window.location.href = constants.URL_ANGELLIST;
 }
diff --git a/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx b/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
index d88a59d15..5964dcd56 100644
--- a/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_grid_tile.tsx
@@ -47,7 +47,7 @@ const styles: Styles = {
         width: '100%',
         boxSizing: 'border-box',
     },
-    dailyTradeVolumeLabel: {
+    weeklyTradeVolumeLabel: {
         fontSize: 14,
         color: colors.mediumBlue,
     },
@@ -80,9 +80,9 @@ export const RelayerGridTile: React.StatelessComponent<RelayerGridTileProps> = (
                     <div className="py1" style={styles.relayerNameLabel}>
                         {props.relayerInfo.name}
                     </div>
-                    <div style={styles.dailyTradeVolumeLabel}>{props.relayerInfo.dailyTxnVolume}</div>
+                    <div style={styles.weeklyTradeVolumeLabel}>{props.relayerInfo.weeklyTxnVolume}</div>
                     <div className="py1" style={styles.subLabel}>
-                        Daily Trade Volume
+                        Weekly Trade Volume
                     </div>
                     <TopTokens tokens={props.relayerInfo.topTokens} networkId={props.networkId} />
                     <div className="py1" style={styles.subLabel}>
@@ -109,14 +109,14 @@ class ImgWithFallback extends React.Component<ImgWithFallbackProps, ImgWithFallb
             imageLoadFailed: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         if (this.state.imageLoadFailed || _.isUndefined(this.props.src)) {
             return <img src={this.props.fallbackSrc} style={this.props.style} />;
         } else {
             return <img src={this.props.src} onError={this._onError.bind(this)} style={this.props.style} />;
         }
     }
-    private _onError() {
+    private _onError(): void {
         this.setState({
             imageLoadFailed: true,
         });
diff --git a/packages/website/ts/components/relayer_index/relayer_index.tsx b/packages/website/ts/components/relayer_index/relayer_index.tsx
index dffd0f83f..d4fd6aeaf 100644
--- a/packages/website/ts/components/relayer_index/relayer_index.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_index.tsx
@@ -48,14 +48,14 @@ export class RelayerIndex extends React.Component<RelayerIndexProps, RelayerInde
             error: undefined,
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         // tslint:disable-next-line:no-floating-promises
         this._fetchRelayerInfosAsync();
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public render() {
+    public render(): React.ReactNode {
         const readyToRender = _.isUndefined(this.state.error) && !_.isUndefined(this.state.relayerInfos);
         if (!readyToRender) {
             return (
diff --git a/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx b/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
index db4d3a211..03c70c9dd 100644
--- a/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
+++ b/packages/website/ts/components/relayer_index/relayer_top_tokens.tsx
@@ -26,21 +26,54 @@ export const TopTokens: React.StatelessComponent<TopTokensProps> = (props: TopTo
             {_.map(props.tokens, (tokenInfo: WebsiteBackendTokenInfo, index: number) => {
                 const firstItemStyle = { ...styles.tokenLabel, ...styles.followingTokenLabel };
                 const style = index !== 0 ? firstItemStyle : styles.tokenLabel;
-                return (
-                    <a
-                        key={tokenInfo.address}
-                        href={tokenLinkFromToken(tokenInfo, props.networkId)}
-                        target="_blank"
-                        style={style}
-                    >
-                        {tokenInfo.symbol}
-                    </a>
-                );
+                return <TokenLink tokenInfo={tokenInfo} style={style} networkId={props.networkId} />;
             })}
         </div>
     );
 };
 
-function tokenLinkFromToken(tokenInfo: WebsiteBackendTokenInfo, networkId: number) {
+interface TokenLinkProps {
+    tokenInfo: WebsiteBackendTokenInfo;
+    style: React.CSSProperties;
+    networkId: number;
+}
+interface TokenLinkState {
+    isHovering: boolean;
+}
+
+class TokenLink extends React.Component<TokenLinkProps, TokenLinkState> {
+    constructor(props: TokenLinkProps) {
+        super(props);
+        this.state = {
+            isHovering: false,
+        };
+    }
+    public render(): React.ReactNode {
+        const style = {
+            ...this.props.style,
+            cursor: 'pointer',
+            opacity: this.state.isHovering ? 0.5 : 1,
+        };
+        return (
+            <a
+                key={this.props.tokenInfo.address}
+                href={tokenLinkFromToken(this.props.tokenInfo, this.props.networkId)}
+                target="_blank"
+                style={style}
+                onMouseEnter={this._onToggleHover.bind(this, true)}
+                onMouseLeave={this._onToggleHover.bind(this, false)}
+            >
+                {this.props.tokenInfo.symbol}
+            </a>
+        );
+    }
+    private _onToggleHover(isHovering: boolean): void {
+        this.setState({
+            isHovering,
+        });
+    }
+}
+
+function tokenLinkFromToken(tokenInfo: WebsiteBackendTokenInfo, networkId: number): string {
     return sharedUtils.getEtherScanLinkIfExists(tokenInfo.address, networkId, EtherscanLinkSuffixes.Address);
 }
diff --git a/packages/website/ts/components/send_button.tsx b/packages/website/ts/components/send_button.tsx
index 79c103e05..8486dbd8b 100644
--- a/packages/website/ts/components/send_button.tsx
+++ b/packages/website/ts/components/send_button.tsx
@@ -33,7 +33,7 @@ export class SendButton extends React.Component<SendButtonProps, SendButtonState
             isSending: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const labelStyle = this.state.isSending ? { fontSize: 10 } : {};
         return (
             <div>
@@ -57,12 +57,12 @@ export class SendButton extends React.Component<SendButtonProps, SendButtonState
             </div>
         );
     }
-    private _toggleSendDialog() {
+    private _toggleSendDialog(): void {
         this.setState({
             isSendDialogVisible: !this.state.isSendDialogVisible,
         });
     }
-    private async _onSendAmountSelectedAsync(recipient: string, value: BigNumber) {
+    private async _onSendAmountSelectedAsync(recipient: string, value: BigNumber): Promise<void> {
         this.setState({
             isSending: true,
         });
diff --git a/packages/website/ts/components/sidebar_header.tsx b/packages/website/ts/components/sidebar_header.tsx
index a0ea869fb..bf46caad9 100644
--- a/packages/website/ts/components/sidebar_header.tsx
+++ b/packages/website/ts/components/sidebar_header.tsx
@@ -12,7 +12,7 @@ interface SidebarHeaderProps {
 interface SidebarHeaderState {}
 
 export class SidebarHeader extends React.Component<SidebarHeaderProps, SidebarHeaderState> {
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="pt2 md-px1 sm-px2" style={{ color: colors.black, paddingBottom: 18 }}>
                 <div className="flex" style={{ fontSize: 25 }}>
diff --git a/packages/website/ts/components/token_balances.tsx b/packages/website/ts/components/token_balances.tsx
index 618b5fe8f..83948e5c2 100644
--- a/packages/website/ts/components/token_balances.tsx
+++ b/packages/website/ts/components/token_balances.tsx
@@ -99,15 +99,15 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             trackedTokenStateByAddress: initialTrackedTokenStateByAddress,
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
         // tslint:disable-next-line:no-floating-promises
         this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public componentWillReceiveProps(nextProps: TokenBalancesProps) {
+    public componentWillReceiveProps(nextProps: TokenBalancesProps): void {
         if (nextProps.userEtherBalanceInWei !== this.props.userEtherBalanceInWei) {
             if (this.state.isBalanceSpinnerVisible) {
                 const receivedAmountInWei = nextProps.userEtherBalanceInWei.minus(this.props.userEtherBalanceInWei);
@@ -153,10 +153,10 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             this._fetchBalancesAndAllowancesAsync(newTokenAddresses);
         }
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.scrollTo(0, 0);
     }
-    public render() {
+    public render(): React.ReactNode {
         const errorDialogActions = [
             <FlatButton
                 key="errorOkBtn"
@@ -294,7 +294,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             </div>
         );
     }
-    private _renderTokenTableRows() {
+    private _renderTokenTableRows(): React.ReactNode {
         if (!this.props.blockchainIsLoaded || this.props.blockchainErr !== BlockchainErrs.NoError) {
             return '';
         }
@@ -313,7 +313,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         );
         return tableRows;
     }
-    private _renderTokenRow(tokenColSpan: number, actionPaddingX: number, token: Token) {
+    private _renderTokenRow(tokenColSpan: number, actionPaddingX: number, token: Token): React.ReactNode {
         const tokenState = this.state.trackedTokenStateByAddress[token.address];
         const tokenLink = sharedUtils.getEtherScanLinkIfExists(
             token.address,
@@ -411,7 +411,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             </TableRow>
         );
     }
-    private _onAssetTokenPicked(tokenAddress: string) {
+    private _onAssetTokenPicked(tokenAddress: string): void {
         if (_.isEmpty(tokenAddress)) {
             this.setState({
                 isTokenPickerOpen: false,
@@ -439,16 +439,16 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             isTokenPickerOpen: false,
         });
     }
-    private _onSendFailed() {
+    private _onSendFailed(): void {
         this.setState({
             errorType: BalanceErrs.sendFailed,
         });
     }
-    private _renderAmount(amount: BigNumber, decimals: number) {
+    private _renderAmount(amount: BigNumber, decimals: number): React.ReactNode {
         const unitAmount = ZeroEx.toUnitAmount(amount, decimals);
         return unitAmount.toNumber().toFixed(configs.AMOUNT_DISPLAY_PRECSION);
     }
-    private _renderTokenName(token: Token) {
+    private _renderTokenName(token: Token): React.ReactNode {
         const tooltipId = `tooltip-${token.address}`;
         return (
             <div className="flex">
@@ -460,7 +460,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             </div>
         );
     }
-    private _renderErrorDialogBody() {
+    private _renderErrorDialogBody(): React.ReactNode {
         switch (this.state.errorType) {
             case BalanceErrs.incorrectNetworkForFaucet:
                 return (
@@ -499,7 +499,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
                 throw utils.spawnSwitchErr('errorType', this.state.errorType);
         }
     }
-    private _onErrorOccurred(errorType: BalanceErrs) {
+    private _onErrorOccurred(errorType: BalanceErrs): void {
         this.setState({
             errorType,
         });
@@ -577,24 +577,24 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         }
         return true;
     }
-    private _onErrorDialogToggle(isOpen: boolean) {
+    private _onErrorDialogToggle(isOpen: boolean): void {
         this.setState({
             errorType: undefined,
         });
     }
-    private _onAddTokenClicked() {
+    private _onAddTokenClicked(): void {
         this.setState({
             isTokenPickerOpen: true,
             isAddingToken: true,
         });
     }
-    private _onRemoveTokenClicked() {
+    private _onRemoveTokenClicked(): void {
         this.setState({
             isTokenPickerOpen: true,
             isAddingToken: false,
         });
     }
-    private async _startPollingZrxBalanceAsync() {
+    private async _startPollingZrxBalanceAsync(): Promise<void> {
         const tokens = _.values(this.props.tokenByAddress);
         const zrxToken = _.find(tokens, t => t.symbol === ZRX_TOKEN_SYMBOL);
 
@@ -609,7 +609,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             isZRXSpinnerVisible: false,
         });
     }
-    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]) {
+    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]): Promise<void> {
         const trackedTokenStateByAddress = this.state.trackedTokenStateByAddress;
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         for (const tokenAddress of tokenAddresses) {
@@ -629,7 +629,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
             });
         }
     }
-    private _getInitialTrackedTokenStateByAddress(trackedTokens: Token[]) {
+    private _getInitialTrackedTokenStateByAddress(trackedTokens: Token[]): TokenStateByAddress {
         const trackedTokenStateByAddress: TokenStateByAddress = {};
         _.each(trackedTokens, token => {
             trackedTokenStateByAddress[token.address] = {
@@ -640,7 +640,7 @@ export class TokenBalances extends React.Component<TokenBalancesProps, TokenBala
         });
         return trackedTokenStateByAddress;
     }
-    private async _refetchTokenStateAsync(tokenAddress: string) {
+    private async _refetchTokenStateAsync(tokenAddress: string): Promise<void> {
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         const [balance, allowance] = await this.props.blockchain.getTokenBalanceAndAllowanceAsync(
             userAddressIfExists,
diff --git a/packages/website/ts/components/top_bar/provider_display.tsx b/packages/website/ts/components/top_bar/provider_display.tsx
index dc6ade841..bebaa5341 100644
--- a/packages/website/ts/components/top_bar/provider_display.tsx
+++ b/packages/website/ts/components/top_bar/provider_display.tsx
@@ -35,7 +35,7 @@ const styles: Styles = {
 };
 
 export class ProviderDisplay extends React.Component<ProviderDisplayProps, ProviderDisplayState> {
-    public render() {
+    public render(): React.ReactNode {
         const isAddressAvailable = !_.isEmpty(this.props.userAddress);
         const isExternallyInjectedProvider =
             this.props.providerType === ProviderType.Injected && this.props.injectedProviderName !== '0x Public';
@@ -83,7 +83,7 @@ export class ProviderDisplay extends React.Component<ProviderDisplayProps, Provi
             </div>
         );
     }
-    public renderPopoverContent(hasInjectedProvider: boolean, hasLedgerProvider: boolean) {
+    public renderPopoverContent(hasInjectedProvider: boolean, hasLedgerProvider: boolean): React.ReactNode {
         if (hasInjectedProvider || hasLedgerProvider) {
             return (
                 <ProviderPicker
diff --git a/packages/website/ts/components/top_bar/provider_picker.tsx b/packages/website/ts/components/top_bar/provider_picker.tsx
index b986da873..1ecb8389c 100644
--- a/packages/website/ts/components/top_bar/provider_picker.tsx
+++ b/packages/website/ts/components/top_bar/provider_picker.tsx
@@ -19,7 +19,7 @@ interface ProviderPickerProps {
 interface ProviderPickerState {}
 
 export class ProviderPicker extends React.Component<ProviderPickerProps, ProviderPickerState> {
-    public render() {
+    public render(): React.ReactNode {
         const isLedgerSelected = this.props.providerType === ProviderType.Ledger;
         const menuStyle = {
             padding: 10,
@@ -46,7 +46,7 @@ export class ProviderPicker extends React.Component<ProviderPickerProps, Provide
             </div>
         );
     }
-    private _renderLabel(title: string, shouldShowNetwork: boolean) {
+    private _renderLabel(title: string, shouldShowNetwork: boolean): React.ReactNode {
         const label = (
             <div className="flex">
                 <div style={{ fontSize: 14 }}>{title}</div>
@@ -55,7 +55,7 @@ export class ProviderPicker extends React.Component<ProviderPickerProps, Provide
         );
         return label;
     }
-    private _renderNetwork() {
+    private _renderNetwork(): React.ReactNode {
         const networkName = sharedConstants.NETWORK_NAME_BY_ID[this.props.networkId];
         return (
             <div className="flex" style={{ marginTop: 1 }}>
@@ -70,7 +70,7 @@ export class ProviderPicker extends React.Component<ProviderPickerProps, Provide
             </div>
         );
     }
-    private _onProviderRadioChanged(value: string) {
+    private _onProviderRadioChanged(value: string): void {
         if (value === ProviderType.Ledger) {
             this.props.onToggleLedgerDialog();
         } else {
diff --git a/packages/website/ts/components/top_bar/top_bar.tsx b/packages/website/ts/components/top_bar/top_bar.tsx
index 5a1b50310..5fde007d6 100644
--- a/packages/website/ts/components/top_bar/top_bar.tsx
+++ b/packages/website/ts/components/top_bar/top_bar.tsx
@@ -83,7 +83,7 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
         style: {},
         isNightVersion: false,
     };
-    public static heightForDisplayType(displayType: TopBarDisplayType) {
+    public static heightForDisplayType(displayType: TopBarDisplayType): number {
         const result = displayType === TopBarDisplayType.Expanded ? EXPANDED_HEIGHT : DEFAULT_HEIGHT;
         return result + 1;
     }
@@ -93,7 +93,7 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
             isDrawerOpen: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const isNightVersion = this.props.isNightVersion;
         const isExpandedDisplayType = this.props.displayType === TopBarDisplayType.Expanded;
         const parentClassNames = `flex mx-auto ${isExpandedDisplayType ? 'pl3 py1' : 'max-width-4'}`;
@@ -278,7 +278,7 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
             </div>
         );
     }
-    private _renderDrawer() {
+    private _renderDrawer(): React.ReactNode {
         return (
             <Drawer
                 open={this.state.isDrawerOpen}
@@ -447,51 +447,51 @@ export class TopBar extends React.Component<TopBarProps, TopBarState> {
             </div>
         );
     }
-    private _onMenuButtonClick() {
+    private _onMenuButtonClick(): void {
         this.setState({
             isDrawerOpen: !this.state.isDrawerOpen,
         });
     }
-    private _isViewingPortal() {
+    private _isViewingPortal(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.Portal);
     }
-    private _isViewingFAQ() {
+    private _isViewingFAQ(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.FAQ);
     }
-    private _isViewing0xjsDocs() {
+    private _isViewing0xjsDocs(): boolean {
         return (
             _.includes(this.props.location.pathname, WebsitePaths.ZeroExJs) ||
             _.includes(this.props.location.pathname, WebsiteLegacyPaths.ZeroExJs)
         );
     }
-    private _isViewingConnectDocs() {
+    private _isViewingConnectDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.Connect);
     }
-    private _isViewingSmartContractsDocs() {
+    private _isViewingSmartContractsDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.SmartContracts);
     }
-    private _isViewingWeb3WrapperDocs() {
+    private _isViewingWeb3WrapperDocs(): boolean {
         return (
             _.includes(this.props.location.pathname, WebsitePaths.Web3Wrapper) ||
             _.includes(this.props.location.pathname, WebsiteLegacyPaths.Web3Wrapper)
         );
     }
-    private _isViewingSolCompilerDocs() {
+    private _isViewingSolCompilerDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.SolCompiler);
     }
-    private _isViewingJsonSchemasDocs() {
+    private _isViewingJsonSchemasDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.JSONSchemas);
     }
-    private _isViewingSolCovDocs() {
+    private _isViewingSolCovDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.SolCov);
     }
-    private _isViewingSubprovidersDocs() {
+    private _isViewingSubprovidersDocs(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.Subproviders);
     }
-    private _isViewingWiki() {
+    private _isViewingWiki(): boolean {
         return _.includes(this.props.location.pathname, WebsitePaths.Wiki);
     }
-    private _shouldDisplayBottomBar() {
+    private _shouldDisplayBottomBar(): boolean {
         return (
             this._isViewingWiki() ||
             this._isViewing0xjsDocs() ||
diff --git a/packages/website/ts/components/top_bar/top_bar_menu_item.tsx b/packages/website/ts/components/top_bar/top_bar_menu_item.tsx
index c0e674b17..2e4254cfa 100644
--- a/packages/website/ts/components/top_bar/top_bar_menu_item.tsx
+++ b/packages/website/ts/components/top_bar/top_bar_menu_item.tsx
@@ -26,7 +26,7 @@ export class TopBarMenuItem extends React.Component<TopBarMenuItemProps, TopBarM
         className: '',
         isNightVersion: false,
     };
-    public render() {
+    public render(): React.ReactNode {
         const primaryStyles = this.props.isPrimary
             ? {
                   borderRadius: 4,
diff --git a/packages/website/ts/components/track_token_confirmation.tsx b/packages/website/ts/components/track_token_confirmation.tsx
index 8c5ba7e6f..294fb8590 100644
--- a/packages/website/ts/components/track_token_confirmation.tsx
+++ b/packages/website/ts/components/track_token_confirmation.tsx
@@ -15,7 +15,7 @@ interface TrackTokenConfirmationProps {
 interface TrackTokenConfirmationState {}
 
 export class TrackTokenConfirmation extends React.Component<TrackTokenConfirmationProps, TrackTokenConfirmationState> {
-    public render() {
+    public render(): React.ReactNode {
         const isMultipleTokens = this.props.tokens.length > 1;
         const allTokens = _.values(this.props.tokenByAddress);
         return (
diff --git a/packages/website/ts/components/trade_history/trade_history.tsx b/packages/website/ts/components/trade_history/trade_history.tsx
index 635358627..1ca9d866f 100644
--- a/packages/website/ts/components/trade_history/trade_history.tsx
+++ b/packages/website/ts/components/trade_history/trade_history.tsx
@@ -28,16 +28,16 @@ export class TradeHistory extends React.Component<TradeHistoryProps, TradeHistor
             sortedFills,
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         this._startPollingForFills();
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._stopPollingForFills();
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         window.scrollTo(0, 0);
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="lg-px4 md-px4 sm-px2">
                 <h3>Trade history</h3>
@@ -48,7 +48,7 @@ export class TradeHistory extends React.Component<TradeHistoryProps, TradeHistor
             </div>
         );
     }
-    private _renderTrades() {
+    private _renderTrades(): React.ReactNode {
         const numNonCustomFills = this._numFillsWithoutCustomERC20Tokens();
         if (numNonCustomFills === 0) {
             return this._renderEmptyNotice();
@@ -66,14 +66,14 @@ export class TradeHistory extends React.Component<TradeHistoryProps, TradeHistor
             );
         });
     }
-    private _renderEmptyNotice() {
+    private _renderEmptyNotice(): React.ReactNode {
         return (
             <Paper className="mt1 p2 mx-auto center" style={{ width: '80%' }}>
                 No filled orders yet.
             </Paper>
         );
     }
-    private _numFillsWithoutCustomERC20Tokens() {
+    private _numFillsWithoutCustomERC20Tokens(): number {
         let numNonCustomFills = 0;
         const tokens = _.values(this.props.tokenByAddress);
         _.each(this.state.sortedFills, fill => {
@@ -93,7 +93,7 @@ export class TradeHistory extends React.Component<TradeHistoryProps, TradeHistor
         });
         return numNonCustomFills;
     }
-    private _startPollingForFills() {
+    private _startPollingForFills(): void {
         this._fillPollingIntervalId = window.setInterval(() => {
             const sortedFills = this._getSortedFills();
             if (!utils.deepEqual(sortedFills, this.state.sortedFills)) {
@@ -103,10 +103,10 @@ export class TradeHistory extends React.Component<TradeHistoryProps, TradeHistor
             }
         }, FILL_POLLING_INTERVAL);
     }
-    private _stopPollingForFills() {
+    private _stopPollingForFills(): void {
         clearInterval(this._fillPollingIntervalId);
     }
-    private _getSortedFills() {
+    private _getSortedFills(): Fill[] {
         const fillsByHash = tradeHistoryStorage.getUserFillsByHash(this.props.userAddress, this.props.networkId);
         const fills = _.values(fillsByHash);
         const sortedFills = _.sortBy(fills, [(fill: Fill) => fill.blockTimestamp * -1]);
diff --git a/packages/website/ts/components/trade_history/trade_history_item.tsx b/packages/website/ts/components/trade_history/trade_history_item.tsx
index dbe72259b..adca4d58c 100644
--- a/packages/website/ts/components/trade_history/trade_history_item.tsx
+++ b/packages/website/ts/components/trade_history/trade_history_item.tsx
@@ -23,7 +23,7 @@ interface TradeHistoryItemProps {
 interface TradeHistoryItemState {}
 
 export class TradeHistoryItem extends React.Component<TradeHistoryItemProps, TradeHistoryItemState> {
-    public render() {
+    public render(): React.ReactNode {
         const fill = this.props.fill;
         const tokens = _.values(this.props.tokenByAddress);
         const takerToken = _.find(tokens, token => {
@@ -88,7 +88,7 @@ export class TradeHistoryItem extends React.Component<TradeHistoryItemProps, Tra
             </Paper>
         );
     }
-    private _renderAmounts(makerToken: Token, takerToken: Token) {
+    private _renderAmounts(makerToken: Token, takerToken: Token): React.ReactNode {
         const fill = this.props.fill;
         const filledTakerTokenAmountInUnits = ZeroEx.toUnitAmount(fill.filledTakerTokenAmount, takerToken.decimals);
         const filledMakerTokenAmountInUnits = ZeroEx.toUnitAmount(fill.filledMakerTokenAmount, takerToken.decimals);
@@ -136,7 +136,7 @@ export class TradeHistoryItem extends React.Component<TradeHistoryItemProps, Tra
             </div>
         );
     }
-    private _renderDate() {
+    private _renderDate(): React.ReactNode {
         const blockMoment = moment.unix(this.props.fill.blockTimestamp);
         if (!blockMoment.isValid()) {
             return null;
@@ -159,7 +159,7 @@ export class TradeHistoryItem extends React.Component<TradeHistoryItemProps, Tra
             </div>
         );
     }
-    private _renderAmount(amount: BigNumber, symbol: string, decimals: number) {
+    private _renderAmount(amount: BigNumber, symbol: string, decimals: number): React.ReactNode {
         const unitAmount = ZeroEx.toUnitAmount(amount, decimals);
         return (
             <span>
diff --git a/packages/website/ts/components/ui/alert.tsx b/packages/website/ts/components/ui/alert.tsx
index f81939255..b571d8c1c 100644
--- a/packages/website/ts/components/ui/alert.tsx
+++ b/packages/website/ts/components/ui/alert.tsx
@@ -7,7 +7,7 @@ interface AlertProps {
     message: string | React.ReactNode;
 }
 
-export function Alert(props: AlertProps) {
+export const Alert = (props: AlertProps) => {
     const isAlert = props.type === AlertTypes.ERROR;
     const errMsgStyles = {
         background: isAlert ? colors.red200 : colors.lightestGreen,
@@ -22,4 +22,4 @@ export function Alert(props: AlertProps) {
             {props.message}
         </div>
     );
-}
+};
diff --git a/packages/website/ts/components/ui/copy_icon.tsx b/packages/website/ts/components/ui/copy_icon.tsx
index d58e50815..2c2941067 100644
--- a/packages/website/ts/components/ui/copy_icon.tsx
+++ b/packages/website/ts/components/ui/copy_icon.tsx
@@ -23,14 +23,14 @@ export class CopyIcon extends React.Component<CopyIconProps, CopyIconState> {
             isHovering: false,
         };
     }
-    public componentDidUpdate() {
+    public componentDidUpdate(): void {
         // Remove tooltip if hover away
         if (!this.state.isHovering && this._copyTooltipTimeoutId) {
             clearInterval(this._copyTooltipTimeoutId);
             this._hideTooltip();
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div className="inline-block">
                 <CopyToClipboard text={this.props.data} onCopy={this._onCopy.bind(this)}>
@@ -55,15 +55,15 @@ export class CopyIcon extends React.Component<CopyIconProps, CopyIconState> {
             </div>
         );
     }
-    private _setRefToProperty(el: HTMLInputElement) {
+    private _setRefToProperty(el: HTMLInputElement): void {
         this._copyable = el;
     }
-    private _setHoverState(isHovering: boolean) {
+    private _setHoverState(isHovering: boolean): void {
         this.setState({
             isHovering,
         });
     }
-    private _onCopy() {
+    private _onCopy(): void {
         if (this._copyTooltipTimeoutId) {
             clearInterval(this._copyTooltipTimeoutId);
         }
@@ -73,7 +73,7 @@ export class CopyIcon extends React.Component<CopyIconProps, CopyIconState> {
             this._hideTooltip();
         }, tooltipLifespanMs);
     }
-    private _hideTooltip() {
+    private _hideTooltip(): void {
         ReactTooltip.hide(ReactDOM.findDOMNode(this._copyable));
     }
 }
diff --git a/packages/website/ts/components/ui/drop_down.tsx b/packages/website/ts/components/ui/drop_down.tsx
index 63b9eec0b..98a495581 100644
--- a/packages/website/ts/components/ui/drop_down.tsx
+++ b/packages/website/ts/components/ui/drop_down.tsx
@@ -35,15 +35,15 @@ export class DropDown extends React.Component<DropDownProps, DropDownState> {
             isDropDownOpen: false,
         };
     }
-    public componentDidMount() {
+    public componentDidMount(): void {
         this._popoverCloseCheckIntervalId = window.setInterval(() => {
             this._checkIfShouldClosePopover();
         }, CHECK_CLOSE_POPOVER_INTERVAL_MS);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         window.clearInterval(this._popoverCloseCheckIntervalId);
     }
-    public componentWillReceiveProps(nextProps: DropDownProps) {
+    public componentWillReceiveProps(nextProps: DropDownProps): void {
         // HACK: If the popoverContent is updated to a different dimension and the users
         // mouse is no longer above it, the dropdown can enter an inconsistent state where
         // it believes the user is still hovering over it. In order to remedy this, we
@@ -52,7 +52,7 @@ export class DropDown extends React.Component<DropDownProps, DropDownState> {
         // dropdowns from having dynamic content.
         this._onHoverOff();
     }
-    public render() {
+    public render(): React.ReactNode {
         return (
             <div
                 style={{ ...this.props.style, width: 'fit-content', height: '100%' }}
@@ -77,11 +77,11 @@ export class DropDown extends React.Component<DropDownProps, DropDownState> {
             </div>
         );
     }
-    private _onHover(event: React.FormEvent<HTMLInputElement>) {
+    private _onHover(event: React.FormEvent<HTMLInputElement>): void {
         this._isHovering = true;
         this._checkIfShouldOpenPopover(event);
     }
-    private _checkIfShouldOpenPopover(event: React.FormEvent<HTMLInputElement>) {
+    private _checkIfShouldOpenPopover(event: React.FormEvent<HTMLInputElement>): void {
         if (this.state.isDropDownOpen) {
             return; // noop
         }
@@ -91,16 +91,16 @@ export class DropDown extends React.Component<DropDownProps, DropDownState> {
             anchorEl: event.currentTarget,
         });
     }
-    private _onHoverOff() {
+    private _onHoverOff(): void {
         this._isHovering = false;
     }
-    private _checkIfShouldClosePopover() {
+    private _checkIfShouldClosePopover(): void {
         if (!this.state.isDropDownOpen || this._isHovering) {
             return; // noop
         }
         this._closePopover();
     }
-    private _closePopover() {
+    private _closePopover(): void {
         this.setState({
             isDropDownOpen: false,
         });
diff --git a/packages/website/ts/components/ui/etherscan_icon.tsx b/packages/website/ts/components/ui/etherscan_icon.tsx
index c1154d3d6..1b032c112 100644
--- a/packages/website/ts/components/ui/etherscan_icon.tsx
+++ b/packages/website/ts/components/ui/etherscan_icon.tsx
@@ -35,6 +35,6 @@ export const EtherScanIcon = (props: EtherScanIconProps) => {
     );
 };
 
-function renderIcon() {
+function renderIcon(): React.ReactNode {
     return <i style={{ color: colors.amber600 }} className="zmdi zmdi-open-in-new" />;
 }
diff --git a/packages/website/ts/components/ui/fake_text_field.tsx b/packages/website/ts/components/ui/fake_text_field.tsx
index 646ae98f6..ac3c30fec 100644
--- a/packages/website/ts/components/ui/fake_text_field.tsx
+++ b/packages/website/ts/components/ui/fake_text_field.tsx
@@ -21,7 +21,7 @@ interface FakeTextFieldProps {
     children?: any;
 }
 
-export function FakeTextField(props: FakeTextFieldProps) {
+export const FakeTextField = (props: FakeTextFieldProps) => {
     return (
         <div className="relative">
             {props.label !== '' && <InputLabel text={props.label} />}
@@ -31,4 +31,4 @@ export function FakeTextField(props: FakeTextFieldProps) {
             <hr style={styles.hr} />
         </div>
     );
-}
+};
diff --git a/packages/website/ts/components/ui/flash_message.tsx b/packages/website/ts/components/ui/flash_message.tsx
index 2cb1fc764..2b866676d 100644
--- a/packages/website/ts/components/ui/flash_message.tsx
+++ b/packages/website/ts/components/ui/flash_message.tsx
@@ -19,7 +19,7 @@ export class FlashMessage extends React.Component<FlashMessageProps, FlashMessag
         showDurationMs: SHOW_DURATION_MS,
         bodyStyle: {},
     };
-    public render() {
+    public render(): React.ReactNode {
         if (!_.isUndefined(this.props.flashMessage)) {
             return (
                 <Snackbar
@@ -34,7 +34,7 @@ export class FlashMessage extends React.Component<FlashMessageProps, FlashMessag
             return null;
         }
     }
-    private _onClose() {
+    private _onClose(): void {
         this.props.dispatcher.hideFlashMessage();
     }
 }
diff --git a/packages/website/ts/components/ui/identicon.tsx b/packages/website/ts/components/ui/identicon.tsx
index bad6c2a78..83c86a144 100644
--- a/packages/website/ts/components/ui/identicon.tsx
+++ b/packages/website/ts/components/ui/identicon.tsx
@@ -15,7 +15,7 @@ export class Identicon extends React.Component<IdenticonProps, IdenticonState> {
     public static defaultProps: Partial<IdenticonProps> = {
         style: {},
     };
-    public render() {
+    public render(): React.ReactNode {
         let address = this.props.address;
         if (_.isEmpty(address)) {
             address = constants.NULL_ADDRESS;
diff --git a/packages/website/ts/components/ui/lifecycle_raised_button.tsx b/packages/website/ts/components/ui/lifecycle_raised_button.tsx
index c85e11884..b06978f16 100644
--- a/packages/website/ts/components/ui/lifecycle_raised_button.tsx
+++ b/packages/website/ts/components/ui/lifecycle_raised_button.tsx
@@ -42,11 +42,11 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
             buttonState: ButtonState.READY,
         };
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         clearTimeout(this._buttonTimeoutId);
         this._didUnmount = true;
     }
-    public render() {
+    public render(): React.ReactNode {
         if (this.props.isHidden) {
             return <span />;
         }
@@ -77,7 +77,7 @@ export class LifeCycleRaisedButton extends React.Component<LifeCycleRaisedButton
             />
         );
     }
-    public async onClickAsync() {
+    public async onClickAsync(): Promise<void> {
         this.setState({
             buttonState: ButtonState.LOADING,
         });
diff --git a/packages/website/ts/components/ui/menu_item.tsx b/packages/website/ts/components/ui/menu_item.tsx
index 3482f436c..64c0dc49d 100644
--- a/packages/website/ts/components/ui/menu_item.tsx
+++ b/packages/website/ts/components/ui/menu_item.tsx
@@ -24,7 +24,7 @@ export class MenuItem extends React.Component<MenuItemProps, MenuItemState> {
             isHovering: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const menuItemStyles = {
             cursor: 'pointer',
             opacity: this.state.isHovering ? 0.5 : 1,
@@ -43,7 +43,7 @@ export class MenuItem extends React.Component<MenuItemProps, MenuItemState> {
             </Link>
         );
     }
-    private _onToggleHover(isHovering: boolean) {
+    private _onToggleHover(isHovering: boolean): void {
         this.setState({
             isHovering,
         });
diff --git a/packages/website/ts/components/ui/party.tsx b/packages/website/ts/components/ui/party.tsx
index 3d94903d1..0d86a6db5 100644
--- a/packages/website/ts/components/ui/party.tsx
+++ b/packages/website/ts/components/ui/party.tsx
@@ -27,7 +27,7 @@ export class Party extends React.Component<PartyProps, PartyState> {
         identiconStyle: {},
         identiconDiameter: IDENTICON_DIAMETER,
     };
-    public render() {
+    public render(): React.ReactNode {
         const label = this.props.label;
         const address = this.props.address;
         const identiconDiameter = this.props.identiconDiameter;
diff --git a/packages/website/ts/components/ui/swap_icon.tsx b/packages/website/ts/components/ui/swap_icon.tsx
index e465a8074..4a6000d1b 100644
--- a/packages/website/ts/components/ui/swap_icon.tsx
+++ b/packages/website/ts/components/ui/swap_icon.tsx
@@ -17,7 +17,7 @@ export class SwapIcon extends React.Component<SwapIconProps, SwapIconState> {
             isHovering: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const swapStyles = {
             color: this.state.isHovering ? colors.amber600 : colors.amber800,
             fontSize: 50,
@@ -34,7 +34,7 @@ export class SwapIcon extends React.Component<SwapIconProps, SwapIconState> {
             </div>
         );
     }
-    private _onToggleHover(isHovering: boolean) {
+    private _onToggleHover(isHovering: boolean): void {
         this.setState({
             isHovering,
         });
diff --git a/packages/website/ts/components/ui/token_icon.tsx b/packages/website/ts/components/ui/token_icon.tsx
index ff57a96de..a9ad567ef 100644
--- a/packages/website/ts/components/ui/token_icon.tsx
+++ b/packages/website/ts/components/ui/token_icon.tsx
@@ -11,7 +11,7 @@ interface TokenIconProps {
 interface TokenIconState {}
 
 export class TokenIcon extends React.Component<TokenIconProps, TokenIconState> {
-    public render() {
+    public render(): React.ReactNode {
         const token = this.props.token;
         const diameter = this.props.diameter;
         return (
diff --git a/packages/website/ts/components/visual_order.tsx b/packages/website/ts/components/visual_order.tsx
index 3bf464e92..76a283547 100644
--- a/packages/website/ts/components/visual_order.tsx
+++ b/packages/website/ts/components/visual_order.tsx
@@ -20,7 +20,7 @@ interface VisualOrderProps {
 interface VisualOrderState {}
 
 export class VisualOrder extends React.Component<VisualOrderProps, VisualOrderState> {
-    public render() {
+    public render(): React.ReactNode {
         const allTokens = _.values(this.props.tokenByAddress);
         const makerImage = this.props.makerToken.iconUrl;
         const takerImage = this.props.takerToken.iconUrl;
@@ -62,7 +62,7 @@ export class VisualOrder extends React.Component<VisualOrderProps, VisualOrderSt
             </div>
         );
     }
-    private _renderAmount(assetToken: AssetToken, token: Token) {
+    private _renderAmount(assetToken: AssetToken, token: Token): React.ReactNode {
         const unitAmount = ZeroEx.toUnitAmount(assetToken.amount, token.decimals);
         return (
             <div style={{ fontSize: 13 }}>
diff --git a/packages/website/ts/components/wallet/wallet.tsx b/packages/website/ts/components/wallet/wallet.tsx
index 079c0e3b3..95f31582e 100644
--- a/packages/website/ts/components/wallet/wallet.tsx
+++ b/packages/website/ts/components/wallet/wallet.tsx
@@ -162,15 +162,15 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             isHoveringSidebar: false,
         };
     }
-    public componentWillMount() {
+    public componentWillMount(): void {
         const trackedTokenAddresses = _.keys(this.state.trackedTokenStateByAddress);
         // tslint:disable-next-line:no-floating-promises
         this._fetchBalancesAndAllowancesAsync(trackedTokenAddresses);
     }
-    public componentWillUnmount() {
+    public componentWillUnmount(): void {
         this._isUnmounted = true;
     }
-    public componentWillReceiveProps(nextProps: WalletProps) {
+    public componentWillReceiveProps(nextProps: WalletProps): void {
         if (
             nextProps.userAddress !== this.props.userAddress ||
             nextProps.networkId !== this.props.networkId ||
@@ -196,11 +196,11 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             this._fetchBalancesAndAllowancesAsync(newTokenAddresses);
         }
     }
-    public render() {
+    public render(): React.ReactNode {
         const isReadyToRender = this.props.blockchainIsLoaded && this.props.blockchainErr === BlockchainErrs.NoError;
         return <div style={styles.root}>{isReadyToRender && this._renderRows()}</div>;
     }
-    private _renderRows() {
+    private _renderRows(): React.ReactNode {
         const isAddressAvailable = !_.isEmpty(this.props.userAddress);
         return (
             <List style={styles.list}>
@@ -210,7 +210,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             </List>
         );
     }
-    private _renderDisconnectedHeaderRows() {
+    private _renderDisconnectedHeaderRows(): React.ReactElement<{}> {
         const userAddress = this.props.userAddress;
         const primaryText = 'wallet';
         return (
@@ -223,7 +223,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _renderDisconnectedRows() {
+    private _renderDisconnectedRows(): React.ReactElement<{}> {
         return (
             <WalletDisconnectedItem
                 key={DISCONNECTED_ITEM_KEY}
@@ -233,7 +233,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _renderConnectedHeaderRows() {
+    private _renderConnectedHeaderRows(): React.ReactElement<{}> {
         const userAddress = this.props.userAddress;
         const primaryText = utils.getAddressBeginAndEnd(userAddress);
         return (
@@ -246,7 +246,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _renderBody() {
+    private _renderBody(): React.ReactElement<{}> {
         const bodyStyle: React.CSSProperties = {
             ...styles.bodyInnerDiv,
             overflow: this.state.isHoveringSidebar ? 'auto' : 'hidden',
@@ -263,17 +263,17 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             </ListItem>
         );
     }
-    private _onSidebarHover(event: React.FormEvent<HTMLInputElement>) {
+    private _onSidebarHover(event: React.FormEvent<HTMLInputElement>): void {
         this.setState({
             isHoveringSidebar: true,
         });
     }
-    private _onSidebarHoverOff() {
+    private _onSidebarHoverOff(): void {
         this.setState({
             isHoveringSidebar: false,
         });
     }
-    private _renderFooterRows() {
+    private _renderFooterRows(): React.ReactElement<{}> {
         return (
             <ListItem
                 key={FOOTER_ITEM_KEY}
@@ -302,7 +302,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _renderEthRows() {
+    private _renderEthRows(): React.ReactNode {
         const primaryText = this._renderAmount(
             this.props.userEtherBalanceInWei,
             constants.DECIMAL_PLACES_ETH,
@@ -352,7 +352,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             </div>
         );
     }
-    private _renderTokenRows() {
+    private _renderTokenRows(): React.ReactNode {
         const trackedTokens = this.props.trackedTokens;
         const trackedTokensStartingWithEtherToken = trackedTokens.sort(
             firstBy((t: Token) => t.symbol !== ETHER_TOKEN_SYMBOL)
@@ -361,7 +361,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
         );
         return _.map(trackedTokensStartingWithEtherToken, this._renderTokenRow.bind(this));
     }
-    private _renderTokenRow(token: Token, index: number) {
+    private _renderTokenRow(token: Token, index: number): React.ReactNode {
         const tokenState = this.state.trackedTokenStateByAddress[token.address];
         const tokenLink = sharedUtils.getEtherScanLinkIfExists(
             token.address,
@@ -415,7 +415,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             </div>
         );
     }
-    private _renderAccessoryItems(config: AccessoryItemConfig) {
+    private _renderAccessoryItems(config: AccessoryItemConfig): React.ReactElement<{}> {
         const shouldShowWrappedEtherAction = !_.isUndefined(config.wrappedEtherDirection);
         const shouldShowToggle = !_.isUndefined(config.allowanceToggleConfig);
         return (
@@ -431,7 +431,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             </div>
         );
     }
-    private _renderAllowanceToggle(config: AllowanceToggleConfig) {
+    private _renderAllowanceToggle(config: AllowanceToggleConfig): React.ReactNode {
         return (
             <AllowanceToggle
                 networkId={this.props.networkId}
@@ -446,13 +446,13 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _renderAmount(amount: BigNumber, decimals: number, symbol: string) {
+    private _renderAmount(amount: BigNumber, decimals: number, symbol: string): React.ReactNode {
         const unitAmount = ZeroEx.toUnitAmount(amount, decimals);
         const formattedAmount = unitAmount.toPrecision(TOKEN_AMOUNT_DISPLAY_PRECISION);
         const result = `${formattedAmount} ${symbol}`;
         return <div style={styles.amountLabel}>{result}</div>;
     }
-    private _renderValue(amount: BigNumber, decimals: number, price?: BigNumber) {
+    private _renderValue(amount: BigNumber, decimals: number, price?: BigNumber): React.ReactNode {
         if (_.isUndefined(price)) {
             return null;
         }
@@ -462,7 +462,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
         const result = `$${formattedAmount}`;
         return result;
     }
-    private _renderTokenIcon(token: Token, tokenLink?: string) {
+    private _renderTokenIcon(token: Token, tokenLink?: string): React.ReactElement<{}> {
         const tooltipId = `tooltip-${token.address}`;
         const tokenIcon = <TokenIcon token={token} diameter={ICON_DIMENSION} />;
         if (_.isUndefined(tokenLink)) {
@@ -475,7 +475,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             );
         }
     }
-    private _renderWrappedEtherButton(wrappedEtherDirection: Side) {
+    private _renderWrappedEtherButton(wrappedEtherDirection: Side): React.ReactNode {
         const isWrappedEtherDirectionOpen = this.state.wrappedEtherDirection === wrappedEtherDirection;
         let buttonLabel;
         let buttonIcon;
@@ -510,7 +510,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             />
         );
     }
-    private _getInitialTrackedTokenStateByAddress(tokenAddresses: string[]) {
+    private _getInitialTrackedTokenStateByAddress(tokenAddresses: string[]): TokenStateByAddress {
         const trackedTokenStateByAddress: TokenStateByAddress = {};
         _.each(tokenAddresses, tokenAddress => {
             trackedTokenStateByAddress[tokenAddress] = {
@@ -521,7 +521,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
         });
         return trackedTokenStateByAddress;
     }
-    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]) {
+    private async _fetchBalancesAndAllowancesAsync(tokenAddresses: string[]): Promise<void> {
         const balanceAndAllowanceTupleByAddress: ItemByAddress<BigNumber[]> = {};
         const userAddressIfExists = _.isEmpty(this.props.userAddress) ? undefined : this.props.userAddress;
         for (const tokenAddress of tokenAddresses) {
@@ -554,7 +554,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             });
         }
     }
-    private async _refetchTokenStateAsync(tokenAddress: string) {
+    private async _refetchTokenStateAsync(tokenAddress: string): Promise<void> {
         await this._fetchBalancesAndAllowancesAsync([tokenAddress]);
     }
     private async _getPriceByAddressAsync(tokenAddresses: string[]): Promise<ItemByAddress<BigNumber>> {
@@ -584,17 +584,17 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             return {};
         }
     }
-    private _openWrappedEtherActionRow(wrappedEtherDirection: Side) {
+    private _openWrappedEtherActionRow(wrappedEtherDirection: Side): void {
         this.setState({
             wrappedEtherDirection,
         });
     }
-    private _closeWrappedEtherActionRow() {
+    private _closeWrappedEtherActionRow(): void {
         this.setState({
             wrappedEtherDirection: undefined,
         });
     }
-    private _getEthToken() {
+    private _getEthToken(): Token {
         const tokens = _.values(this.props.tokenByAddress);
         const etherToken = _.find(tokens, { symbol: ETHER_TOKEN_SYMBOL });
         return etherToken;
diff --git a/packages/website/ts/components/wallet/wrap_ether_item.tsx b/packages/website/ts/components/wallet/wrap_ether_item.tsx
index a38163770..2ed924bcd 100644
--- a/packages/website/ts/components/wallet/wrap_ether_item.tsx
+++ b/packages/website/ts/components/wallet/wrap_ether_item.tsx
@@ -64,7 +64,7 @@ export class WrapEtherItem extends React.Component<WrapEtherItemProps, WrapEther
             isEthConversionHappening: false,
         };
     }
-    public render() {
+    public render(): React.ReactNode {
         const etherBalanceInEth = ZeroEx.toUnitAmount(this.props.userEtherBalanceInWei, constants.DECIMAL_PLACES_ETH);
         const isWrappingEth = this.props.direction === Side.Deposit;
         const topLabelText = isWrappingEth ? 'Convert ETH into WETH 1:1' : 'Convert WETH into ETH 1:1';
@@ -116,20 +116,20 @@ export class WrapEtherItem extends React.Component<WrapEtherItemProps, WrapEther
             />
         );
     }
-    private _onValueChange(isValid: boolean, amount?: BigNumber) {
+    private _onValueChange(isValid: boolean, amount?: BigNumber): void {
         this.setState({
             currentInputAmount: amount,
             currentInputHasErrors: !isValid,
         });
     }
-    private _renderIsEthConversionHappeningSpinner() {
+    private _renderIsEthConversionHappeningSpinner(): React.ReactElement<{}> {
         return this.state.isEthConversionHappening ? (
             <div className="pl1" style={{ paddingTop: 10 }}>
                 <i className="zmdi zmdi-spinner zmdi-hc-spin" />
             </div>
         ) : null;
     }
-    private _renderWrapEtherConfirmationButton() {
+    private _renderWrapEtherConfirmationButton(): React.ReactElement<{}> {
         const isWrappingEth = this.props.direction === Side.Deposit;
         const labelText = isWrappingEth ? 'wrap' : 'unwrap';
         return (
@@ -138,13 +138,13 @@ export class WrapEtherItem extends React.Component<WrapEtherItemProps, WrapEther
                     backgroundColor={colors.wrapEtherConfirmationButton}
                     label={labelText}
                     labelStyle={styles.wrapEtherConfirmationButtonLabel}
-                    onClick={this._wrapEtherConfirmationAction.bind(this)}
+                    onClick={this._wrapEtherConfirmationActionAsync.bind(this)}
                     disabled={this.state.isEthConversionHappening}
                 />
             </div>
         );
     }
-    private async _wrapEtherConfirmationAction() {
+    private async _wrapEtherConfirmationActionAsync(): Promise<void> {
         this.setState({
             isEthConversionHappening: true,
         });