@loopback/docs/site/apidocs/graphql.graphqlserver.exportgraphqlschema.md

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---
lang: en
title: 'API docs: graphql.graphqlserver.exportgraphqlschema'
keywords: LoopBack 4.0, LoopBack 4, Node.js, TypeScript, OpenAPI
sidebar: lb4_sidebar
editurl: https://github.com/loopbackio/loopback-next/tree/master/extensions/graphql
permalink: /doc/en/lb4/apidocs.graphql.graphqlserver.exportgraphqlschema.html
---

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[Home](./index.md) &gt; [@loopback/graphql](./graphql.md) &gt; [GraphQLServer](./graphql.graphqlserver.md) &gt; [exportGraphQLSchema](./graphql.graphqlserver.exportgraphqlschema.md)

## GraphQLServer.exportGraphQLSchema() method

**Signature:**

```typescript
exportGraphQLSchema(outFile?: string, log?: (message?: any, ...optionalParams: any[]) => void): Promise<void>;
```

## Parameters

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

Parameter


</th><th>

Type


</th><th>

Description


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

outFile


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

string


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

_(Optional)_


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

log


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

(message?: any, ...optionalParams: any\[\]) =&gt; void


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

_(Optional)_


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

**Returns:**

Promise&lt;void&gt;