@loopback/docs/site/apidocs/express.default_middleware_chain.md

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---
lang: en
title: 'API docs: express.default_middleware_chain'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
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editurl: https://github.com/strongloop/loopback-next/tree/master/packages/express
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[Home](./index.md) &gt; [@loopback/express](./express.md) &gt; [DEFAULT\_MIDDLEWARE\_CHAIN](./express.default_middleware_chain.md)

## DEFAULT\_MIDDLEWARE\_CHAIN variable

Default extension point name for middleware

<b>Signature:</b>

```typescript
DEFAULT_MIDDLEWARE_CHAIN = "middlewareChain.default"
```