How to call a JS function dynamically, and also pass in a variable number of dynamic arguments.

js_dynamic_function_call_and_dynamic_args.js

// INPUT:
// const largeSphere = {
//   type: 'sphere',
//   radius: 40
// }

// const smallSphere = {
//   type: 'sphere',
//   radius: 10
// }

// const cone = {
//   type: 'cone',
//   radius: 3,
//   height: 5
// }

// const duck = [
//   largeSphere,
//   smallSphere,
//   cone
// ]


const sphereVolume = function (radius) {
  return (4/3) * Math.PI * Math.pow(radius, 3);
}

const coneVolume = function (radius, height) {
  return  (Math.PI * Math.pow(radius, 2) * height) / 3;
}

const prismVolume = function (height, width, depth) {
  return (width * depth) * height;
}

// https://stackoverflow.com/questions/969743/how-do-i-call-a-dynamically-named-method-in-javascript
// https://stackoverflow.com/questions/2856059/passing-an-array-as-a-function-parameter-in-javascript/2856069#2856069
const totalVolume = function (solids) {
  return solids.reduce((acc, curr) => {
    return acc + volume[curr.type + 'Volume'](...Object.keys(curr).reduce((params, key) => {
      if (key !== 'type') {
        params.push(curr[key]);
      }
      return params;
    }, []));
  }, 0);
}

const volume = {
  sphereVolume: sphereVolume,
  coneVolume: coneVolume,
  prismVolume: prismVolume
}