Function fromMonth

fromMonth(monthName: string, locale?: string): null | number
Converts a month name to its corresponding number in the specified locale. Performs a case-insensitive comparison with both long and short month names.
Parameters
- monthName: string
  The name of the month to convert (e.g., "January", "Jan", "janvier")
- locale: string = 'en-US'
  The locale to use for parsing (default: 'en-US')
Returns null | number
The month number (1-12) or null if not found
Example
```
// Returns 1
fromMonth('January')
```
Example
```
// Returns 1
fromMonth('jan', 'fr-FR')
```
Example
```
// Returns 12
fromMonth('Dez', 'de-DE')
```
- Defined in datetime.ts:57