demo/bundle.js
/**
             * Mix properties into target object.
             */
Mix properties into target object.
Mix properties into target object .
function extend (to, _from) {
              for (var key in _from) {
                to[key] = _from[key];
              }
              return to
            }
function extend ( to , _from ) { for ( var key in _from ) { to [ key ] = _from [ key ] ; } return to }
Mix properties into target object.
Mix properties into target object .