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lang: en
title: 'API docs: context.contextviewevent'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/packages/context
permalink: /doc/en/lb4/apidocs.context.contextviewevent.html
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[Home](./index.md) > [@loopback/context](./context.md) > [ContextViewEvent](./context.contextviewevent.md)
## ContextViewEvent interface
An event emitted by a `ContextView`
<b>Signature:</b>
```typescript
export interface ContextViewEvent<T> extends ContextEvent
```
<b>Extends:</b> [ContextEvent](./context.contextevent.md)
## Properties
| Property | Type | Description |
| --- | --- | --- |
| [cachedValue?](./context.contextviewevent.cachedvalue.md) | T | <i>(Optional)</i> Optional cached value for an <code>unbind</code> event |