# fallbackRandIndex

```ts
function fallbackRandIndex(length): number;
```

Defined in: [packages/synapse-core/src/utils/rand.ts:30](https://github.com/FilOzone/synapse-sdk/blob/1d6c4b9fe34534bf1087dfe41491b72be0b46858/packages/synapse-core/src/utils/rand.ts#L30)

## Parameters

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

## Returns

`number`