# UseLiveQueryReturn

# Interface: UseLiveQueryReturn\<T, TData\>

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:47](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L47)

Return type for useLiveQuery hook

## Type Parameters

### T

`T` *extends* `object`

### TData

`TData` = `T`[]

## Properties

### collection

```ts
collection: Collection<T, string | number, {
}>;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:50](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L50)

The underlying query collection instance

***

### data

```ts
data: TData;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:49](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L49)

Reactive array of query results in order, or single item when using findOne()

***

### isCleanedUp

```ts
isCleanedUp: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:56](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L56)

True when query has been cleaned up

***

### isError

```ts
isError: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:55](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L55)

True when query encountered an error

***

### isIdle

```ts
isIdle: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:54](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L54)

True when query hasn't started yet

***

### isLoading

```ts
isLoading: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:52](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L52)

True while initial query data is loading

***

### isReady

```ts
isReady: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:53](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L53)

True when query has received first data and is ready

***

### state

```ts
state: Map<string | number, T>;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:48](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L48)

Reactive Map of query results (key → item)

***

### status

```ts
status: CollectionStatus;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:51](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L51)

Current query status