Implement calculateBMI function to compute BMI based on weight and height, including error handling for invalid height

Author: moses77-boop

Sprint-3/3-mandatory-implement/1-bmi.js

@@ -15,5 +15,12 @@
 // It should return a string of their Body Mass Index to 1 decimal place
 
 function calculateBMI(weight, height) {
+  if (!height || height <= 0){ // to catch cases of undefined and null
+    throw new Error('Height must be greater than 0');
+  }
+  const heightSquared = height ** 2;
+  const bmi = weight / heightSquared;
+  return bmi.toFixed(1); // rounds 'bmi' to 1 decimal place and converts to a string
   // return the BMI of someone based off their weight and height
 }
+console.log(`The Body Mass Index is: ${calculateBMI(70, 1.73)}`);