[Home](./index.md) > [@apextoaster/js-utils](./js-utils.md) > [NotImplementedError](./js-utils.notimplementederror.md)
## NotImplementedError class
Error indicating that a function has not been implemented yet.
Signature:
```typescript
export declare class NotImplementedError extends BaseError
```
Extends: BaseError
## Constructors
| Constructor | Modifiers | Description |
| --- | --- | --- |
| [(constructor)(msg, nested)](./js-utils.notimplementederror._constructor_.md) | | Constructs a new instance of the NotImplementedError
class |