@loopback/docs/site/apidocs/context.contextview.open.md

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---
lang: en
title: 'API docs: context.contextview.open'
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.contextview.open.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [ContextView](./context.contextview.md) &gt; [open](./context.contextview.open.md)

## ContextView.open() method

Start listening events from the context

<b>Signature:</b>

```typescript
open(): Subscription | undefined;
```
<b>Returns:</b>

[Subscription](./context.subscription.md) \| undefined