bmi-calcu/index.js

npm package to calculate BMI

export function getBMI(weight, height) {
  if (typeof weight !== "number" || typeof height !== "number") {
    return { error: "Weight and height must be numbers." };
  }
  if (weight <= 0 || height <= 0) {
    return { error: "Weight and height must be greater than 0." };
  }

  const bmi = (weight / (height * height)).toFixed(2);
  let status;

  if (bmi < 18.5) {
    status = "Underweight";
  } else if (bmi >= 18.5 && bmi <= 24.9) {
    status = "Normal";
  } else if (bmi >= 25 && bmi <= 29.9) {
    status = "Overweight";
  } else {
    status = "Obese";
  }

  return { bmi, status };
}