Error Handling

Error classification

• Programming errors: Bugs (TypeError, ReferenceError, assertion failures, etc.). Fix the code; do not catch and continue
• Operational errors: Expected failures (network timeout, file not found, invalid input, etc.). Handle gracefully with recovery, escalation, user notification, or logging

Sync error handling

try {
  const result = parse(input);
  return result;
} catch (error) {
  console.error({ error });
  return defaultValue;
}