Sort wallet tokens by timestamp added and scroll to newly added token

1 files changed, 16 insertions, 2 deletions

diff --git a/packages/website/ts/components/wallet/wallet.tsx b/packages/website/ts/components/wallet/wallet.tsx
index dc48d6619..5c90aa3da 100644
--- a/packages/website/ts/components/wallet/wallet.tsx
+++ b/packages/website/ts/components/wallet/wallet.tsx
@@ -156,6 +156,20 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
             isHoveringSidebar: false,
         };
     }
+    public componentDidUpdate(prevProps: WalletProps): void {
+        const currentTrackedTokens = this.props.trackedTokens;
+        const differentTrackedTokens = _.difference(currentTrackedTokens, prevProps.trackedTokens);
+        const firstDifferentTrackedToken = _.head(differentTrackedTokens);
+        // check if there is only one different token, and if that token is a member of the current tracked tokens
+        // this means that the token was added, not removed
+        if (
+            !_.isUndefined(firstDifferentTrackedToken) &&
+            _.size(differentTrackedTokens) === 1 &&
+            currentTrackedTokens.includes(firstDifferentTrackedToken)
+        ) {
+            document.getElementById(firstDifferentTrackedToken.address).scrollIntoView();
+        }
+    }
     public render(): React.ReactNode {
         const isBlockchainLoaded = this.props.blockchainIsLoaded && this.props.blockchainErr === BlockchainErrs.NoError;
         return (
@@ -318,7 +332,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
         const trackedTokensStartingWithEtherToken = trackedTokens.sort(
             firstBy((t: Token) => t.symbol !== constants.ETHER_TOKEN_SYMBOL)
                 .thenBy((t: Token) => t.symbol !== constants.ZRX_TOKEN_SYMBOL)
-                .thenBy('address'),
+                .thenBy('trackedTimestamp'),
         );
         return _.map(trackedTokensStartingWithEtherToken, this._renderTokenRow.bind(this));
     }
@@ -383,7 +397,7 @@ export class Wallet extends React.Component<WalletProps, WalletState> {
         const style = { ...styles.tokenItem, ...additionalStyle };
         const etherToken = this._getEthToken();
         return (
-            <div key={key} className={`flex flex-column ${className || ''}`}>
+            <div id={key} key={key} className={`flex flex-column ${className || ''}`}>
                 <StandardIconRow
                     icon={icon}
                     main={