---
url: https://canary.warp-drive.io/api/@warp-drive/react/variables/WatcherContext.md
description: >-
  React context holding the signal watcher that the nearest `ReactiveContext`
  uses to track which WarpDrive signals its children read.
---

#  WatcherContext

```ts
const WatcherContext: Context<
  | {
  watcher: Watcher;
}
| null>;
```

Defined in: [-private/reactive-context.tsx:154](https://github.com/warp-drive-data/warp-drive/blob/4418225138f47a5fe1f4d7ca2b61c01e985a415d/warp-drive-packages/react/src/-private/reactive-context.tsx#L154)