# UseLiveQueryReturn

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:63](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L63)

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:66](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L66)

The underlying query collection instance

***

### data

```ts
data: TData;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:65](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L65)

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

***

### health

```ts
health: HealthNode | undefined;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:78](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L78)

***

### isCleanedUp

```ts
isCleanedUp: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:75](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L75)

True when query has been cleaned up

***

### isCrashed

```ts
isCrashed: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:74](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L74)

True when local storage or an invariant broke

***

### isIdle

```ts
isIdle: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:70](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L70)

True when query hasn't started yet

***

### isLoading

```ts
isLoading: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:68](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L68)

True while initial query data is loading

***

### isLoadingError

```ts
isLoadingError: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:72](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L72)

True when the first load failed

***

### isReady

```ts
isReady: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:69](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L69)

True when query has received first data and is ready

***

### isSyncError

```ts
isSyncError: boolean;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:77](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L77)

True when data is shown and `health` has a problem

***

### state

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

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:64](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L64)

Reactive Map of query results (key → item)

***

### status

```ts
status: CollectionStatus;
```

Defined in: [packages/svelte-db/src/useLiveQuery.svelte.ts:67](https://github.com/TanStack/db/blob/main/packages/svelte-db/src/useLiveQuery.svelte.ts#L67)

Current query status