Function validateOptionalNumeric

validateOptionalNumeric(value: unknown, fieldPath: string): string | null
Validate an optional numeric string for DAML. Returns null for undefined/null values.
Parameters
- value: unknown
  The value to validate
- fieldPath: string
  Dot-notation path for error messages
Returns string | null
The numeric string value, or null
- Defined in src/utils/validation.ts:115