objectPathGet.js

// no string get
const get = (fn, def) => {
  try {
    return fn();
  } catch (e) {
    return def;
  }
};

// usage example
const a = { x: { y: 1 } };
const r0 = get(() => a.x.w.z, 101);
const r1 = get(() => a.x.y)
console.log(r0, r1);