algo.js

const possibleCoins = [10, 5, 2];
const amount = process.argv.slice(2);

function getChange(given) {
  if (!given || given === 0) {
    return [];
  }

  let change = [];
  for (const coin of possibleCoins) {
    if (coin > given) {
      continue;
    }
    const amountToGive = Math.floor(given / coin);
    const remainder = given % coin;
    change = change.concat(Array(amountToGive).fill(coin));
    change = change.concat(getChange(remainder, possibleCoins));
    break;
  }
  return change;
}

console.log(getChange(amount));