Function to split up some given number into a fixed number of parts.

random-split.js

const random = require('random-js')();

// Splits up number into times random parts
const splitter = (number, times) => {
  const ran = random.real(0, number);
  if (times < 2) {
    return [number];
  }
  const halved = times / 2;
  if (times % 2 === 0) {
    return splitter(ran, halved).concat(splitter(number - ran, halved));
  } else {
    return splitter(ran, Math.ceil(halved)).concat(
      splitter(number - ran, times - Math.ceil(halved))
    );
  }
};