Function mergeDefaults

ai/ai.ts:401–411

(
  a?: T,
  b?: T,
)

  if (configuredType) return configuredType;
  return `auto -> ${resolveProviderType(providerConfig)}`;
};

const mergeDefaults = <T extends { extraParams?: Record<string, any> }>(
  a?: T,
  b?: T,
): T | undefined => {
  if (!a && !b) return undefined;
  return {
    ...(a || {}),
    ...(b || {}),
    extraParams: { ...(a?.extraParams || {}), ...(b?.extraParams || {}) },
  } as T;
};