# MongoDBReplicaSetResource.withMember

- Module: [Aspire.Hosting.MongoDB](/reference/api/typescript/aspire.hosting.mongodb.md)
- Defined on: [MongoDBReplicaSetResource](/reference/api/typescript/aspire.hosting.mongodb/mongodbreplicasetresource.md)
- Version: `13.6.0`
- Kind: `method`

Adds a MongoDB server resource as a member of the replica set.

## Definition

```typescript
interface MongoDBReplicaSetResource {
  // ... omitted for brevity
  withMember(member: MongoDBServerResource): MongoDBReplicaSetResource;
}
```

## Signature

```typescript
withMember(member: MongoDBServerResource): MongoDBReplicaSetResource
```

## Parameters

- `member` ([MongoDBServerResource](/reference/api/typescript/aspire.hosting.mongodb/mongodbserverresource.md))

## Returns

[MongoDBReplicaSetResource](/reference/api/typescript/aspire.hosting.mongodb/mongodbreplicasetresource.md) `builder`

## Defined on

- [MongoDBReplicaSetResource](/reference/api/typescript/aspire.hosting.mongodb/mongodbreplicasetresource.md) -- `handle`