index.js
function define(obj, key, val) {
  Reflect.defineProperty(obj, key, {
    configurable: true,
    enumerable: false,
    writeable: true,
    value: val
  });
}
function define(obj, key, val) {
  Reflect.defineProperty(obj, key, {
    configurable: true,
    enumerable: false,
    writeable: true,
    value: val
  });
}
function define ( obj , key , val ) { Reflect . defineProperty ( obj , key , { configurable : true , enumerable : false , writeable : true , value : val } ) ; }
Add a non-enumerable property to `obj`
Add a non - enumerable property to obj