# convexOfflineMutation

```ts
function convexOfflineMutation<TMutation>(config): OfflineMutationFn;
```

Defined in: [offline.ts:21](https://github.com/tanstack/db/blob/main/packages/convex-db-collection/src/offline.ts#L21)

Use as a named mutationFn in startOfflineExecutor. The existing outbox owns
durability, restoration, leadership and retries. The server mutation must
atomically deduplicate idempotencyKey with its writes.

## Type Parameters

### TMutation

`TMutation` *extends* `FunctionReference`\<`"mutation"`\>

## Parameters

### config

`object` & `FunctionArgs`\<`TMutation`\> *extends* `object` ? `unknown` : `never`

## Returns

`OfflineMutationFn`