> ## Documentation Index
> Fetch the complete documentation index at: https://docs.forterulesengine.io/llms.txt
> Use this file to discover all available pages before exploring further.

# isRight

> v0.20.5

> **isRight**\<`T`, `U`>(`e`): `e is Right<U>`

Defined in: [src/modules/utils.ts:40](https://github.com/Forte-Service-Company-Ltd/forte-rules-engine-sdk/blob/40cc8388cecd8ee445b00b9df2b681cff8552ece/src/modules/utils.ts#L40)

## Type Parameters

| Type Parameter |
| -------------- |
| `T`            |
| `U`            |

## Parameters

| Parameter | Type                                                   |
| --------- | ------------------------------------------------------ |
| `e`       | [`Either`](../../types/type-aliases/Either)\<`T`, `U`> |

## Returns

`e is Right<U>`