# API Reference
## Constructs
### ListenerNextAvailablePriority
Get the next available priority for a listener.
Useful when constructing listener rules
that target a specific hostname. You may not want to have to manage setting the priority
yourself since it's currently a required field.
Caveat: This uses a custom resource to look up the next available priority using the AWS SDK.
It currently only supports getting one priority at a time -- if you are creating multiple rules
in the same context, you may need to create dependencies between the constructs to ensure rules
are added in sequence.
#### Initializers
```typescript
import { ListenerNextAvailablePriority } from '@rogerchi/cdk-listener-next-available-priority'
new ListenerNextAvailablePriority(scope: Construct, id: string, props: ListenerNextAvailablePriorityProps)
```
| **Name** | **Type** | **Description** |
| --- | --- | --- |
| scope | constructs.Construct | *No description.* |
| id | string | *No description.* |
| props | ListenerNextAvailablePriorityProps | *No description.* |
---
##### `scope`Required
- *Type:* constructs.Construct
---
##### `id`Required
- *Type:* string
---
##### `props`Required
- *Type:* ListenerNextAvailablePriorityProps
---
#### Methods
| **Name** | **Description** |
| --- | --- |
| toString | Returns a string representation of this construct. |
---
##### `toString`
```typescript
public toString(): string
```
Returns a string representation of this construct.
#### Static Functions
| **Name** | **Description** |
| --- | --- |
| isConstruct | Checks if `x` is a construct. |
---
##### ~~`isConstruct`~~
```typescript
import { ListenerNextAvailablePriority } from '@rogerchi/cdk-listener-next-available-priority'
ListenerNextAvailablePriority.isConstruct(x: any)
```
Checks if `x` is a construct.
###### `x`Required
- *Type:* any
Any object.
---
#### Properties
| **Name** | **Type** | **Description** |
| --- | --- | --- |
| node | constructs.Node | The tree node. |
| nextPriority | number | The next available priority. |
---
##### `node`Required
```typescript
public readonly node: Node;
```
- *Type:* constructs.Node
The tree node.
---
##### `nextPriority`Required
```typescript
public readonly nextPriority: number;
```
- *Type:* number
The next available priority.
---
## Structs
### ListenerNextAvailablePriorityProps
Construction properties of ListenerNextAvailablePriority.
#### Initializer
```typescript
import { ListenerNextAvailablePriorityProps } from '@rogerchi/cdk-listener-next-available-priority'
const listenerNextAvailablePriorityProps: ListenerNextAvailablePriorityProps = { ... }
```
#### Properties
| **Name** | **Type** | **Description** |
| --- | --- | --- |
| listener | aws-cdk-lib.aws_elasticloadbalancingv2.IListener | The listener to retrieve the next available priority from. |
---
##### `listener`Required
```typescript
public readonly listener: IListener;
```
- *Type:* aws-cdk-lib.aws_elasticloadbalancingv2.IListener
The listener to retrieve the next available priority from.
---