string gauge calculator

/**
 * This calculator tries to distribute however many strings you want over whatever
 * range you want using the same approximate distribution of gauges on Ernie Ball
 * strings. Replace the following three numbers (16, 9, 42) with your preferences.
 * To run this code, open any window in Google Chrome and open the JavaScript Console
 * (View => Developer => JavaScript Console), then paste all of this code in and 
 * press enter. It should print your answer in the console. Tweak numbers and re-run
 * as much as you want
 */

// HOW MANY STRINGS?
let numStrings = 16;

// WHAT'S THE LOWEST AND HIGHEST GAUGE YOU WANT TO USE?
let [gaugeLow, gaugeHigh] = [9, 42];

(() => {
  const distributeGauges = (_, i, {length}) => 
    Math.pow(i/(length-1), 1.73) * length * (gaugeHigh-gaugeLow)/(length) + gaugeLow;
  const { round } = Math;
  const gauges = new Array(numStrings).fill(0).map(distributeGauges).map(round);
  console.log(`With ${numStrings} strings on your instrument, you can use the following gauges:
  ${gauges.join(', ')}`
  );
})();

Interactive version here! https://playcode.io/644991/