+ setIsModalOpen(false)}
+ tokens={state.tokens}
+ onSelect={handleTokenSelect}
+ />
+
+ {toast && (
+ setToast(null)}
+ />
+ )}
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem2/src/components/Toast.tsx b/src/problem2/src/components/Toast.tsx
new file mode 100644
index 000000000..17939b548
--- /dev/null
+++ b/src/problem2/src/components/Toast.tsx
@@ -0,0 +1,24 @@
+import React from 'react';
+import type { ToastType } from '../types';
+
+interface ToastProps {
+ type: ToastType;
+ message: string;
+ onClose: () => void;
+}
+
+export const Toast: React.FC
+
+
+
+
+ Swap Tokens
+Trade tokens in an instant
+
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem2/src/components/TokenModal.tsx b/src/problem2/src/components/TokenModal.tsx
new file mode 100644
index 000000000..53d959c14
--- /dev/null
+++ b/src/problem2/src/components/TokenModal.tsx
@@ -0,0 +1,197 @@
+import React from 'react';
+import { X } from 'lucide-react';
+import type { Token } from '../types';
+
+interface TokenModalProps {
+ isOpen: boolean;
+ onClose: () => void;
+ tokens: Token[];
+ onSelect: (token: Token) => void;
+}
+
+export const TokenModal: React.FC
+
+ {message}
+
+
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem2/src/components/TokenSelector.tsx b/src/problem2/src/components/TokenSelector.tsx
new file mode 100644
index 000000000..6fcdffb9c
--- /dev/null
+++ b/src/problem2/src/components/TokenSelector.tsx
@@ -0,0 +1,98 @@
+import React from 'react';
+import type { Token } from '../types';
+
+interface TokenSelectorProps {
+ token: Token;
+ direction: string;
+ onClick: () => void;
+}
+
+export const TokenSelector: React.FC
+
+
+
+ Select a token
+ +
+ setSearchTerm(e.target.value)}
+ style={{
+ width: '100%',
+ padding: '0.75rem 1rem 0.75rem 2.5rem',
+ border: '1.5px solid #e0e7ff',
+ borderRadius: 14,
+ fontSize: 16,
+ background: '#f8fafc',
+ color: '#1e293b',
+ outline: 'none',
+ boxShadow: '0 1px 4px 0 rgba(37,99,235,0.04)',
+ transition: 'border-color 0.18s',
+ }}
+ onFocus={e => (e.currentTarget.style.borderColor = '#2563eb')}
+ onBlur={e => (e.currentTarget.style.borderColor = '#e0e7ff')}
+ />
+
+
+ {filteredTokens.map((token) => (
+
+ {
+ onSelect(token);
+ onClose();
+ }}
+ onMouseOver={e => {
+ (e.currentTarget as HTMLDivElement).style.background = '#e0e7ff';
+ (e.currentTarget as HTMLDivElement).style.boxShadow = '0 4px 16px 0 rgba(37,99,235,0.10)';
+ (e.currentTarget as HTMLDivElement).style.border = '1.5px solid #2563eb';
+ }}
+ onMouseOut={e => {
+ (e.currentTarget as HTMLDivElement).style.background = '#fff';
+ (e.currentTarget as HTMLDivElement).style.boxShadow = '0 1px 4px 0 rgba(37,99,235,0.04)';
+ (e.currentTarget as HTMLDivElement).style.border = '1.5px solid transparent';
+ }}
+ >
+ 
{
+ const target = e.target as HTMLImageElement;
+ target.src = 'https://raw.githubusercontent.com/Switcheo/token-icons/main/tokens/SWTH.svg';
+ }}
+ />
+
+ ))}
+
+
+ {token.name}
+ {token.symbol}
+
+
+
+
+ )
+}
+
+export default App
diff --git a/src/problem3/src/assets/react.svg b/src/problem3/src/assets/react.svg
new file mode 100644
index 000000000..6c87de9bb
--- /dev/null
+++ b/src/problem3/src/assets/react.svg
@@ -0,0 +1 @@
+
\ No newline at end of file
diff --git a/src/problem3/src/components/ErrorBoundary.tsx b/src/problem3/src/components/ErrorBoundary.tsx
new file mode 100644
index 000000000..b52692a23
--- /dev/null
+++ b/src/problem3/src/components/ErrorBoundary.tsx
@@ -0,0 +1,51 @@
+import { Component } from 'react';
+import type { ReactNode, ErrorInfo } from 'react';
+
+interface Props {
+ children: ReactNode;
+ fallback?: ReactNode;
+}
+
+interface State {
+ hasError: boolean;
+ error?: Error;
+}
+
+export class ErrorBoundary extends Component
+
+ );
+ }
+
+ return this.props.children;
+ }
+}
\ No newline at end of file
diff --git a/src/problem3/src/components/LoadingSpinner.tsx b/src/problem3/src/components/LoadingSpinner.tsx
new file mode 100644
index 000000000..7b252451e
--- /dev/null
+++ b/src/problem3/src/components/LoadingSpinner.tsx
@@ -0,0 +1,8 @@
+export const LoadingSpinner = () => {
+ return (
+ Something went wrong
+
+
+
+ Error details
+{this.state.error?.message}
+
+
+ Loading...
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem3/src/components/WalletPage.tsx b/src/problem3/src/components/WalletPage.tsx
new file mode 100644
index 000000000..f851945d6
--- /dev/null
+++ b/src/problem3/src/components/WalletPage.tsx
@@ -0,0 +1,32 @@
+import { useWalletBalances } from '../hooks/useWalletBalances';
+import { useSortedBalances } from '../hooks/useSortedBalances';
+import { WalletRow } from './WalletRow';
+import { LoadingSpinner } from './LoadingSpinner';
+
+export const WalletPage = () => {
+ const { balances, isLoading, error } = useWalletBalances();
+ const sortedBalances = useSortedBalances(balances);
+
+ if (error) {
+ throw error; // This will be caught by ErrorBoundary
+ }
+
+ if (isLoading) {
+ return
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem3/src/components/WalletRow.tsx b/src/problem3/src/components/WalletRow.tsx
new file mode 100644
index 000000000..ad6eeb831
--- /dev/null
+++ b/src/problem3/src/components/WalletRow.tsx
@@ -0,0 +1,27 @@
+import type { FormattedWalletBalance } from '../types';
+
+interface WalletRowProps {
+ balance: FormattedWalletBalance;
+}
+
+export const WalletRow = ({ balance }: WalletRowProps) => {
+ return (
+ Your Wallet
+
+ {sortedBalances.length === 0 ? (
+
+ No tokens found in your wallet
+ ) : (
+ sortedBalances.map((balance, index) => (
+
+
+ );
+};
\ No newline at end of file
diff --git a/src/problem3/src/constants.ts b/src/problem3/src/constants.ts
new file mode 100644
index 000000000..aee394a0d
--- /dev/null
+++ b/src/problem3/src/constants.ts
@@ -0,0 +1,6 @@
+export const BLOCKCHAIN_PRIORITIES = {
+ 'Ethereum': 1,
+ 'Polygon': 2,
+ 'Arbitrum': 3,
+ 'BSC': 4,
+} as const;
\ No newline at end of file
diff --git a/src/problem3/src/hooks/usePrices.ts b/src/problem3/src/hooks/usePrices.ts
new file mode 100644
index 000000000..9462b2599
--- /dev/null
+++ b/src/problem3/src/hooks/usePrices.ts
@@ -0,0 +1,22 @@
+import { useState, useEffect } from 'react';
+
+const MOCK_PRICES: Record
+ {balance.token.name}
+ {balance.token.blockchain}
+
+
+
+ {balance.formatted} {balance.token.symbol}
+
+
+ ${balance.usdValue.toLocaleString(undefined, {
+ minimumFractionDigits: 2,
+ maximumFractionDigits: 2
+ })}
+
+
+