function tekaTekiTeko(batas) {
  if (typeof batas !== 'number' || !Number.isInteger(batas)) {
    throw new Error("Error: The provided parameter must be an integer.");
  }
 
  if (batas < 20) {
    throw new Error("Error: The minimum value for the parameter is 20.");
  }
 
  for (let i = 1; i <= batas; i++) {
    let output = "";
 
    if (i % 2 === 0) {
      output += "Teka";
    }
    if (i % 3 === 0) {
      output += "Teki";
    }
    if (i % 5 === 0) {
      output += "Teko";
    }
 
    console.log(output || i);
  }
}
 
try {
  tekaTekiTeko(30);
} catch (e) {
  console.error(e.message);
}

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