function tekaTekiTeko(batas) {
    if (!Number.isInteger(batas) || batas < 20) {
        throw new Error("Parameter batas harus berupa bilangan bulat positif (unsigned integer) dan minimal 20");
    }
 
    for (let i = 1; i <= batas; i++) {
        if (i % 2 === 0 && i % 3 === 0 && i % 5 === 0) {
            console.log("TekaTekiTeko");
        } else if (i % 2 === 0 && i % 3 === 0) {
            console.log("TekaTeki");
        } else if (i % 2 === 0 && i % 5 === 0) {
            console.log("TekaTeko");
        } else if (i % 3 === 0 && i % 5 === 0) {
            console.log("TekiTeko");
        } else if (i % 2 === 0) {
            console.log("Teka");
        } else if (i % 3 === 0) {
            console.log("Teki");
        } else if (i % 5 === 0) {
            console.log("Teko");
        } else {
            console.log(i);
        }
    }
}
 
console.log("\n===== Test parameter valid =====\n");
 
try {
    tekaTekiTeko(30);
} catch (error) {
    console.log(`Error: ${error.message}`);
}
 
console.log("\n===== Test parameter tidak valid =====\n");
 
try {
    tekaTekiTeko(19);
} catch (error) {
    console.log(`Error: ${error.message}`);
}
 
try {
    tekaTekiTeko("abc");
} catch (error) {
    console.log(`Error: ${error.message}`);
}
 
try {
    tekaTekiTeko(15.5);
} catch (error) {
    console.log(`Error: ${error.message}`);
}

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