13 lines
384 B
Markdown
13 lines
384 B
Markdown
---
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id: onlineManager
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title: onlineManager
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---
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```ts
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const onlineManager: OnlineManager;
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```
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Defined in: [packages/query-core/src/onlineManager.ts:117](https://github.com/TanStack/query/blob/main/packages/query-core/src/onlineManager.ts#L117)
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Singleton instance of [OnlineManager](../interfaces/OnlineManager.md), used to manage and observe the online state within TanStack Query.
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