# Functions

<a id="eralength"></a>

##  eraLength

▸ **eraLength**(api: *`ApiInterface$Rx`*): `(Anonymous function)`

*Defined in [session/eraLength.ts:13](https://github.com/polkadot-js/api/blob/40a1ec9/packages/api-derive/src/session/eraLength.ts#L13)*

**Parameters:**

| Name | Type |
| ------ | ------ |
| api | `ApiInterface$Rx` |

**Returns:** `(Anonymous function)`

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