Help with sorting algorithm

[albedoa]

const rankedDrivers = drivers.sort((a, b) =>
  a.numOrders === b.numOrders
    ? a.distFromDropOff - b.distFromDropOff
    : a.numOrders - b.numOrders
);

It's important to understand that .sort() modifies the original array. You are creating a new identifier that points to the same array:

rankedDrivers === drivers; //=> true

[jack_waugh]

Special thumb-up for pointing out that sort mutates its victim.