<!-- Public documentation export; not library implementation source. -->
# IObservableValueReadOnly

[Integration guide](https://docs.lumencharts.com/charting-library/reference/compatibility) · [Reference index](https://docs.lumencharts.com/charting-library/api/)

Public contract reference. This declaration describes types and callback shapes; availability is constrained by the linked integration guide and the runtime capability. Legacy product-specific fields are not a promise of implementation.

```ts
export interface IObservableValueReadOnly<T>
  extends IBoxedValueReadOnly<T>, IObservable<T> {}
```

## Related types

- [IBoxedValueReadOnly](https://docs.lumencharts.com/charting-library/api/IBoxedValueReadOnly)
- [IObservable](https://docs.lumencharts.com/charting-library/api/IObservable)

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Documentation page: https://docs.lumencharts.com/charting-library/api/IObservableValueReadOnly