---
lang: en
title: 'API docs: extension-logging.loggingbindings'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
editurl: https://github.com/strongloop/loopback-next/tree/master/extensions/logging
permalink: /doc/en/lb4/apidocs.extension-logging.loggingbindings.html
---

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[Home](./index.md) &gt; [@loopback/extension-logging](./extension-logging.md) &gt; [LoggingBindings](./extension-logging.loggingbindings.md)

## LoggingBindings namespace

Binding keys used by this component.

<b>Signature:</b>

```typescript
export declare namespace LoggingBindings 
```

## Variables

|  Variable | Description |
|  --- | --- |
|  [COMPONENT](./extension-logging.loggingbindings.component.md) |  |
|  [FLUENT\_SENDER](./extension-logging.loggingbindings.fluent_sender.md) |  |
|  [WINSTON\_HTTP\_ACCESS\_LOGGER](./extension-logging.loggingbindings.winston_http_access_logger.md) | Binding key for http access logger with winston |
|  [WINSTON\_INVOCATION\_LOGGER](./extension-logging.loggingbindings.winston_invocation_logger.md) | Binding key for method invocation logger with winston |
|  [WINSTON\_LOGGER](./extension-logging.loggingbindings.winston_logger.md) | Binding key for winston logger |
|  [WINSTON\_TRANSPORT\_FLUENT](./extension-logging.loggingbindings.winston_transport_fluent.md) | Binding key for winston transport backed by fluent |