Function isInsufficientFundsError

isInsufficientFundsError(error: unknown): boolean
Check whether an error indicates insufficient native currency for a transaction's total cost. Matches viem errors (InsufficientFundsError), raw RPC errors (insufficient funds for gas * price + value), and Salt API errors (ApiError with code INSUFFICIENT_FUNDS).

Used internally to translate low-level failures into InsufficientFunds; also exported for consumers who need to classify errors from their own viem or API calls.
Parameters
- error: unknown
  The error to check
Returns boolean
true if the error indicates insufficient funds
Example: Classify an unknown error
```
import { isInsufficientFundsError } from 'salt-sdk';

try {
  await publicClient.sendRawTransaction({ serializedTransaction: signedTx });
} catch (err) {
  if (isInsufficientFundsError(err)) {
    console.error('The account needs funding on this chain');
  }
}
```