# WindowSplitter.toggleCollapsed

Collapses to min or restores the recorded collapse value.

## Signatures

```ts
export declare function toggleCollapsed<E, R>(state: RefSubject.RefSubject<State, E, R>): Effect.Effect<State, E, R>;
```



## Examples

```ts
import { Effect } from "effect"
import * as WindowSplitter from "@typed/ui/WindowSplitter"

const program = Effect.gen(function* () {
  const state = yield* WindowSplitter.makeState({ value: 320 })
  yield* WindowSplitter.toggleCollapsed(state)
})
```