Function isStringMonthValueNumber

isStringMonthValueNumber(value: unknown): value is string
Check if given is a string representing a CronMonthValueNumber.

Example
```
isStringMonthValueNumber("10"); // true
isStringMonthValueNumber("50"); // false
```
Returns
Returns true if is a string representing a CronMonthValueNumber, false otherwise.
Parameters
- value: unknown
  
  Value to check.
Returns value is string
- Defined in src/validations/isStringMonthValueNumber.ts:15