# Function: loggerLink()

> 

> **loggerLink**\<`TRouter`\>(`opts`): [`TRPCLink`](https://trpc.io/docs/typedoc/client/index/type-aliases/TRPCLink.md)\<`TRouter`\>

Defined in: [packages/client/src/links/loggerLink.ts:230](https://github.com/trpc/trpc/blob/7c907acfd8b31929214792e3b8c2ad7a8ac72563/packages/client/src/links/loggerLink.ts#L230)

Logs each call when it starts, and each result or error it gets with the
time since the start.

## Type Parameters

| Type Parameter | Default type |
| ------ | ------ |
| `TRouter` *extends* `AnyRouter` | `AnyRouter` |

## Parameters

| Parameter | Type |
| ------ | ------ |
| `opts` | [`LoggerLinkOptions`](https://trpc.io/docs/typedoc/client/links/loggerLink/interfaces/LoggerLinkOptions.md)\<`TRouter`\> |

## Returns

[`TRPCLink`](https://trpc.io/docs/typedoc/client/index/type-aliases/TRPCLink.md)\<`TRouter`\>

## See

https://trpc.io/docs/client/links/loggerLink