---
lang: en
title: 'API docs: context.resolutionoptions.optional'
keywords: LoopBack 4.0, LoopBack 4
sidebar: lb4_sidebar
permalink: /doc/en/lb4/apidocs.context.resolutionoptions.optional.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [ResolutionOptions](./context.resolutionoptions.md) &gt; [optional](./context.resolutionoptions.optional.md)

## ResolutionOptions.optional property

A boolean flag to indicate if the dependency is optional. If it's set to `true` and the binding is not bound in a context, the resolution will return `undefined` instead of throwing an error.

<b>Signature:</b>

```typescript
optional?: boolean;
```

