[Home](./index.md) > [rc-js-util](./rc-js-util.md) > [INestedErrorCtorConfig](./rc-js-util.inestederrorctorconfig.md) ## INestedErrorCtorConfig interface The config used to create `NestedError` constructors, used by [getNestedErrorCtor()](./rc-js-util.getnestederrorctor.md). **Signature:** ```typescript export interface INestedErrorCtorConfig ``` ## Properties

Property	Modifiers	Type	Description
[defaultError](./rc-js-util.inestederrorctorconfig.defaulterror.md)		ILocalization	In the event that an error is not an extensions of this class, this message will be used.
[getTxFallback](./rc-js-util.inestederrorctorconfig.gettxfallback.md)		(localization: ILocalization) => string	Given a localization, convert it to a somewhat human-readable string. This should NOT be using any localization system if there's any chance it can fail to load. This is intended for cases where the localization system is not available.