@loopback/docs/site/apidocs/context.configurationresolver.md

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

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[Home](./index.md) &gt; [@loopback/context](./context.md) &gt; [ConfigurationResolver](./context.configurationresolver.md)

## ConfigurationResolver interface

Resolver for configuration of bindings. It's responsible for finding corresponding configuration for a given binding key.

By default, `undefined` is expected if no configuration is provided. The behavior can be overridden by setting `optional` to `false` in resolution options.

**Signature:**

```typescript
export interface ConfigurationResolver 
```

## Methods

<table><thead><tr><th>

Method


</th><th>

Description


</th></tr></thead>
<tbody><tr><td markdown="1">

[getConfigAsValueOrPromise(key, propertyPath, resolutionOptions)](./context.configurationresolver.getconfigasvalueorpromise.md)


</td><td markdown="1">

Resolve config for the binding key


</td></tr>
</tbody></table>