Type guard that checks if a value is a valid Ruku number
The value to check
True if x is an integer between 1 and the total number of Rukus
if (isValidRuku(5)) { // 5 is a valid Ruku number} Copy
if (isValidRuku(5)) { // 5 is a valid Ruku number}
Type guard that checks if a value is a valid Ruku number