# Slots

Named Astro slots available to a component generator's second argument.

Astro owns the serialized or existing slot content. Insert each present slot
once as opaque output; a missing named slot is undefined. Re-rendering its
descendants with Typed would give two renderers ownership of the same range.

## Signatures

```ts
export type Slots = Readonly<Record<string, Fx.Fx<RenderEvent> | undefined>>;
```