Function daysInMonth

daysInMonth(month: number, year: number): number
Number of days in Hebrew month in a given year (29 or 30).

Most months have a fixed length. Cheshvan and Kislev vary to absorb the 353/354/355-day variation of the Hebrew year (see longCheshvan and shortKislev), and Adar I has 30 days in a leap year but 29 in a common year.
Parameters
- month: number
  Hebrew month (e.g. months.TISHREI)
- year: number
  Hebrew year
Returns number
an integer 29-30
Example
```
import {daysInMonth, months} from '@hebcal/hdate';
daysInMonth(months.CHESHVAN, 5769); // 29
daysInMonth(months.KISLEV, 5769);   // 30
```
- Defined in hdateBase.ts:324