Errors

import {
  SdkError,          // Base class
  ValidationError,   // Invalid input parameters
  AuthError,         // Missing API key or wallet/signer
  NetworkError,      // HTTP failures, timeouts, server errors
  SigningError,      // Wallet signing failed or rejected
  NotSupportedError, // Operation not supported (e.g., Kalshi limit orders)
} from '@predexon/trade-sdk';

try {
  await sdk.placeOrder({
    core: { venue: 'polymarket', wallet: '0x...', side: 'buy', amount: '10', type: 'market' },
    flags: { tokenId: '12345...' },
  });
} catch (error) {
  if (error instanceof ValidationError) {
    // Fix input and retry
  } else if (error instanceof SigningError) {
    // User rejected or wallet missing method
  } else if (error instanceof AuthError) {
    // Missing API key or wallet config
  } else if (error instanceof NetworkError) {
    // Safe to retry (use idempotency key)
  } else if (error instanceof NotSupportedError) {
    // Operation not available for this venue/wallet
  }
}

catch (error) {
  if (error instanceof SigningError) {
    console.log(error.message);  // "Wallet signing failed"
    console.log(error.cause);    // Original error from wallet
  }
}