---
lang: en
title: 'API docs: context.injection.methoddescriptororparameterindex'
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.injection.methoddescriptororparameterindex.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [Injection](./context.injection.md) &gt; [methodDescriptorOrParameterIndex](./context.injection.methoddescriptororparameterindex.md)

## Injection.methodDescriptorOrParameterIndex property

**Signature:**

```typescript
methodDescriptorOrParameterIndex?: TypedPropertyDescriptor<ValueType> | number;
```