---
lang: en
title: 'API docs: core.coretags.life_cycle_observer'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.core.coretags.life_cycle_observer.html
---

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[Home](./index.md) &gt; [@loopback/core](./core.md) &gt; [CoreTags](./core.coretags.md) &gt; [LIFE\_CYCLE\_OBSERVER](./core.coretags.life_cycle_observer.md)

## CoreTags.LIFE\_CYCLE\_OBSERVER variable

Binding tag for life cycle observers

<b>Signature:</b>

```typescript
LIFE_CYCLE_OBSERVER = "lifeCycleObserver"
```

