---
url: /api/specs/schema/types/fn/oas/function-merge-spec.md
description: api documentation of mergeSpec from @tsed/schema
---

## Usage

```typescript
import { mergeSpec } from "@tsed/schema";
```

> See [/packages/specs/schema/src/fn/oas/mergeSpec.ts](https://github.com/tsedio/tsed/blob/v8.37.1/packages/specs/schema/src/fn/oas/mergeSpec.ts#L0-L0).

## Overview

```ts
function mergeSpec<Spec = OpenSpec2 | OpenSpec3>(spec: Partial<Spec>, input: Partial<Spec>): Partial<Spec>;
```

## Description

Merge two spec