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cf86710 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 | # Function: isDateRange()
> **isDateRange**(`value`): `value is DateRange`
Returns true if `value` is a [DateRange](../type-aliases/DateRange.md) type.
## Parameters
| Parameter | Type |
| :------ | :------ |
| `value` | `unknown` |
## Returns
`value is DateRange`
## Source
[src/types/Matchers.ts:103](https://github.com/gpbl/react-day-picker/blob/9ad13dc72fff814dcf720a62f6e3b5ea38e8af6d/src/types/Matchers.ts#L103)
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