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

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[Home](./index.md) &gt; [@loopback/repository-tests](./repository-tests.md) &gt; [TransactionalRepositoryCtor](./repository-tests.transactionalrepositoryctor.md)

## TransactionalRepositoryCtor type

A constructor of a class implementing TransactionalRepository interface, accepting the Entity class (constructor) and a dataSource instance.

**Signature:**

```typescript
export type TransactionalRepositoryCtor = new <T extends Entity, ID, Relations extends object>(entityClass: typeof Entity & {
    prototype: T;
}, dataSource: juggler.DataSource) => TransactionalEntityRepository<T, ID, Relations>;
```