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[Home](./index.md) &gt; [rc-js-util](./rc-js-util.md) &gt; [Range1d](./rc-js-util.range1d.md) &gt; [TTypeGuardRange1d](./rc-js-util.range1d.ttypeguardrange1d.md)

## Range1d.TTypeGuardRange1d property

**Signature:**

```typescript
TTypeGuardRange1d: true;
```