---
lang: en
title: 'API docs: context.constantbindingsource'
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.constantbindingsource.html
---

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [ConstantBindingSource](./context.constantbindingsource.md)

## ConstantBindingSource type

Binding source for `to`

**Signature:**

```typescript
export type ConstantBindingSource<T> = {
    type: BindingType.CONSTANT;
    value: T;
};
```
**References:** [BindingType.CONSTANT](./context.bindingtype.md)