| # 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) | |