## freeze · function

Pause processing of reactive updates until the returned *thaw* function is called.

While frozen, changes to observed data still accumulate, but no re-renders run. Freezes
stack: if there are multiple outstanding freezes, redraws resume only once the last one is
thawed. This is useful to batch an async burst of changes into a single update pass, or to
hold the UI steady (e.g. the dev tools use it for "freeze redraws").

**Signature:** `() => () => void`

**Returns:** A function that releases this freeze. Calling it more than once has no effect.

**Examples:**

```typescript
const thaw = A.freeze();
// ...make many changes without intermediate redraws...
thaw(); // redraws run now (if no other freezes remain)
```