src/Out.js
function mapObjectInPlace(o, fn, ctxt) {
  for (let key in o) {
    if (o.hasOwnProperty(key)) {
      o[key] = fn.call(ctxt, o[key], key, o);
    }
  }
  return o;
}
function mapObjectInPlace(o, fn, ctxt) {
  for (let key in o) {
    if (o.hasOwnProperty(key)) {
      o[key] = fn.call(ctxt, o[key], key, o);
    }
  }
  return o;
}
function mapObjectInPlace ( o , fn , ctxt ) { for ( let key in o ) { if ( o . hasOwnProperty ( key ) ) { o [ key ] = fn . call ( ctxt , o [ key ] , key , o ) ; } } return o ; }
Map an object's values, replacing existing ones.
Map an object s values replacing existing ones .