# Function: isDayPickerSingle() > **isDayPickerSingle**(`props`): `props is DayPickerSingleProps` Returns true when the props are of type [DayPickerSingleProps](../interfaces/DayPickerSingleProps.md). ## Parameters | Parameter | Type | | :------ | :------ | | `props` | [`DayPickerContextValue`](../interfaces/DayPickerContextValue.md) \| [`DayPickerProps`](../type-aliases/DayPickerProps.md) | ## Returns `props is DayPickerSingleProps` ## Source [src/types/DayPickerSingle.ts:19](https://github.com/gpbl/react-day-picker/blob/9ad13dc72fff814dcf720a62f6e3b5ea38e8af6d/src/types/DayPickerSingle.ts#L19)