update

packages/thirdweb/src/exports/react.ts

@@ -221,6 +221,7 @@ export {
 export {
   AccountBalance,
   type AccountBalanceProps,
+  type AccountBalanceFormatParams
 } from "../react/web/ui/prebuilt/Account/balance.js";
 export {
   AccountName,

packages/thirdweb/src/react/web/ui/ConnectWallet/Details.tsx

@@ -86,7 +86,10 @@ import { fadeInAnimation } from "../design-system/animations.js";
 import { StyledButton } from "../design-system/elements.js";
 import { AccountAddress } from "../prebuilt/Account/address.js";
 import { AccountAvatar } from "../prebuilt/Account/avatar.js";
-import { AccountBalance } from "../prebuilt/Account/balance.js";
+import {
+  AccountBalance,
+  type AccountBalanceFormatParams,
+} from "../prebuilt/Account/balance.js";
 import { AccountBlobbie } from "../prebuilt/Account/blobbie.js";
 import { AccountName } from "../prebuilt/Account/name.js";
 import { AccountProvider } from "../prebuilt/Account/provider.js";
@@ -278,12 +281,13 @@ export const ConnectedWalletDetails: React.FC<{
             chain={walletChain}
             loadingComponent={<Skeleton height={fontSize.xs} width="70px" />}
             fallbackComponent={<Skeleton height={fontSize.xs} width="70px" />}
-            formatFn={formatBalanceOnButton}
+            formatFn={formatAccountBalanceForButton}
             tokenAddress={
               props.detailsButton?.displayBalanceToken?.[
                 Number(walletChain?.id)
               ]
             }
+            showFiatValue="USD"
           />
         </Text>
       </Container>
@@ -380,11 +384,12 @@ function DetailsModal(props: {
             <AccountBalance
               fallbackComponent={<Skeleton height="1em" width="100px" />}
               loadingComponent={<Skeleton height="1em" width="100px" />}
-              formatFn={(num: number) => formatNumber(num, 9)}
               chain={walletChain}
               tokenAddress={
                 props.displayBalanceToken?.[Number(walletChain?.id)]
               }
+              formatFn={formatAccountBalanceForModal}
+              showFiatValue="USD"
             />
           </Text>
         </Text>
@@ -1006,8 +1011,38 @@ function DetailsModal(props: {
   );
 }
 
-function formatBalanceOnButton(num: number) {
-  return formatNumber(num, num < 1 ? 5 : 4);
+/**
+ * Format the display balance for both crypto and fiat, in the Details button and Modal
+ * If both crypto balance and fiat balance exist, we have to keep the string very short to avoid UI issues.
+ * @internal
+ */
+function formatAccountBalanceForButton(
+  props: AccountBalanceFormatParams,
+): string {
+  if (props.fiatBalance && props.fiatSymbol) {
+    // Need to keep them short to avoid UI overflow issues
+    const formattedTokenBalance = formatNumber(props.tokenBalance, 1);
+    const formattedFiatBalance = formatNumber(props.fiatBalance, 0);
+    return `${formattedTokenBalance} ${props.tokenSymbol} (${props.fiatSymbol}${formattedFiatBalance})`;
+  }
+  const formattedTokenBalance = formatNumber(
+    props.tokenBalance,
+    props.tokenBalance < 1 ? 5 : 4,
+  );
+  return `${formattedTokenBalance} ${props.tokenSymbol}`;
+}
+
+function formatAccountBalanceForModal(
+  props: AccountBalanceFormatParams,
+): string {
+  if (props.fiatBalance && props.fiatSymbol) {
+    // Need to keep them short to avoid UI overflow issues
+    const formattedTokenBalance = formatNumber(props.tokenBalance, 5);
+    const formattedFiatBalance = formatNumber(props.fiatBalance, 4);
+    return `${formattedTokenBalance} ${props.tokenSymbol} (${props.fiatSymbol}${formattedFiatBalance})`;
+  }
+  const formattedTokenBalance = formatNumber(props.tokenBalance, 9);
+  return `${formattedTokenBalance} ${props.tokenSymbol}`;
 }
 
 const WalletInfoButton = /* @__PURE__ */ StyledButton((_) => {

packages/thirdweb/src/react/web/ui/prebuilt/Account/balance.test.tsx

@@ -1,37 +1,11 @@
 import { describe, expect, it } from "vitest";
-import { ANVIL_CHAIN } from "~test/chains.js";
 import { render, screen, waitFor } from "~test/react-render.js";
 import { TEST_CLIENT } from "~test/test-clients.js";
 import { TEST_ACCOUNT_A } from "~test/test-wallets.js";
-import { getWalletBalance } from "../../../../../wallets/utils/getWalletBalance.js";
 import { AccountBalance } from "./balance.js";
 import { AccountProvider } from "./provider.js";
 
 describe.runIf(process.env.TW_SECRET_KEY)("AccountBalance component", () => {
-  it("format the balance properly", async () => {
-    const roundTo1Decimal = (num: number): number => Math.round(num * 10) / 10;
-    const balance = await getWalletBalance({
-      chain: ANVIL_CHAIN,
-      client: TEST_CLIENT,
-      address: TEST_ACCOUNT_A.address,
-    });
-
-    render(
-      <AccountProvider address={TEST_ACCOUNT_A.address} client={TEST_CLIENT}>
-        <AccountBalance chain={ANVIL_CHAIN} formatFn={roundTo1Decimal} />
-      </AccountProvider>,
-    );
-
-    waitFor(() =>
-      expect(
-        screen.getByText(roundTo1Decimal(Number(balance.displayValue)), {
-          exact: true,
-          selector: "span",
-        }),
-      ).toBeInTheDocument(),
-    );
-  });
-
   it("should fallback properly if failed to load", () => {
     render(
       <AccountProvider address={TEST_ACCOUNT_A.address} client={TEST_CLIENT}>

packages/thirdweb/src/react/web/ui/prebuilt/Account/balance.tsx

@@ -4,13 +4,22 @@ import { type UseQueryOptions, useQuery } from "@tanstack/react-query";
 import type React from "react";
 import type { JSX } from "react";
 import type { Chain } from "../../../../../chains/types.js";
+import { NATIVE_TOKEN_ADDRESS } from "../../../../../constants/addresses.js";
+import { convertCryptoToFiat } from "../../../../../exports/pay.js";
 import { useActiveWalletChain } from "../../../../../react/core/hooks/wallets/useActiveWalletChain.js";
-import {
-  type GetWalletBalanceResult,
-  getWalletBalance,
-} from "../../../../../wallets/utils/getWalletBalance.js";
+import { getWalletBalance } from "../../../../../wallets/utils/getWalletBalance.js";
 import { useAccountContext } from "./provider.js";
 
+/**
+ * @internal
+ */
+export type AccountBalanceFormatParams = {
+  tokenBalance: number;
+  tokenSymbol: string;
+  fiatBalance?: number;
+  fiatSymbol?: string;
+};
+
 /**
  * Props for the AccountBalance component
  * @component
@@ -33,7 +42,7 @@ export interface AccountBalanceProps
    * use this function to transform the balance display value like round up the number
    * Particularly useful to avoid overflowing-UI issues
    */
-  formatFn?: (num: number) => number;
+  formatFn?: (props: AccountBalanceFormatParams) => string;
   /**
    * This component will be shown while the balance of the account is being fetched
    * If not passed, the component will return `null`.
@@ -67,9 +76,11 @@ export interface AccountBalanceProps
    * Optional `useQuery` params
    */
   queryOptions?: Omit<
-    UseQueryOptions<GetWalletBalanceResult>,
+    UseQueryOptions<AccountBalanceFormatParams>,
     "queryFn" | "queryKey"
   >;
+
+  showFiatValue?: "USD";
 }
 
 /**
@@ -149,10 +160,11 @@ export interface AccountBalanceProps
 export function AccountBalance({
   chain,
   tokenAddress,
-  formatFn,
   loadingComponent,
   fallbackComponent,
   queryOptions,
+  formatFn,
+  showFiatValue,
   ...restProps
 }: AccountBalanceProps) {
   const { address, client } = useAccountContext();
@@ -164,20 +176,61 @@ export function AccountBalance({
       chainToLoad?.id || -1,
       address || "0x0",
       { tokenAddress },
+      showFiatValue,
     ] as const,
-    queryFn: async () => {
+    queryFn: async (): Promise<AccountBalanceFormatParams> => {
       if (!chainToLoad) {
         throw new Error("chain is required");
       }
       if (!client) {
         throw new Error("client is required");
       }
-      return getWalletBalance({
+      const tokenBalanceData = await getWalletBalance({
         chain: chainToLoad,
         client,
         address,
         tokenAddress,
       });
+
+      if (!tokenBalanceData) {
+        throw new Error(
+          `Failed to retrieve ${tokenAddress ? `token: ${tokenAddress}` : "native token"} balance for address: ${address} on chainId:${chainToLoad.id}`,
+        );
+      }
+
+      if (showFiatValue) {
+        const fiatData = await convertCryptoToFiat({
+          fromAmount: Number(tokenBalanceData.displayValue),
+          fromTokenAddress: tokenAddress || NATIVE_TOKEN_ADDRESS,
+          to: showFiatValue,
+          chain: chainToLoad,
+          client,
+        }).catch(() => undefined);
+
+        // We can never support 100% of token out there, so if something fails to resolve, it's expected
+        // in that case just return the tokenBalance and symbol
+        return {
+          tokenBalance: Number(tokenBalanceData.displayValue),
+          tokenSymbol: tokenBalanceData.symbol,
+          fiatBalance: fiatData?.result,
+          fiatSymbol: fiatData?.result
+            ? new Intl.NumberFormat("en", {
+                style: "currency",
+                currency: showFiatValue,
+                minimumFractionDigits: 0,
+                maximumFractionDigits: 0,
+              })
+                .formatToParts(0)
+                .find((p) => p.type === "currency")?.value ||
+              showFiatValue.toUpperCase()
+            : undefined,
+        };
+      }
+
+      return {
+        tokenBalance: Number(tokenBalanceData.displayValue),
+        tokenSymbol: tokenBalanceData.symbol,
+      };
     },
     ...queryOptions,
   });
@@ -190,13 +243,24 @@ export function AccountBalance({
     return fallbackComponent || null;
   }
 
-  const displayValue = formatFn
-    ? formatFn(Number(balanceQuery.data.displayValue))
-    : balanceQuery.data.displayValue;
+  if (formatFn) {
+    return <span {...restProps}>{formatFn(balanceQuery.data)}</span>;
+  }
+
+  const { tokenBalance, tokenSymbol, fiatBalance, fiatSymbol } =
+    balanceQuery.data;
+
+  if (fiatBalance && fiatSymbol) {
+    return (
+      <span {...restProps}>
+        {`${tokenBalance} ${tokenSymbol} (${fiatSymbol}${fiatBalance})`}
+      </span>
+    );
+  }
 
   return (
     <span {...restProps}>
-      {displayValue} {balanceQuery.data.symbol}
+      {tokenBalance} {tokenSymbol}
     </span>
   );
 }