# fallbackRandIndex

> **fallbackRandIndex**(`length`): `number`

Defined in: [packages/synapse-core/src/utils/rand.ts:30](https://github.com/FilOzone/synapse-sdk/blob/f17b40269f20ce1fa3544d336d07aba30788c569/packages/synapse-core/src/utils/rand.ts#L30)

## Parameters

| Parameter | Type |
| ------ | ------ |
| `length` | `number` |

## Returns

`number`