freak.js
function mixin(target, properties) {
    Object.keys(properties).forEach(function(prop) {
      target[prop] = properties[prop];
    });
  }
function mixin(target, properties) {
    Object.keys(properties).forEach(function(prop) {
      target[prop] = properties[prop];
    });
  }
function mixin ( target , properties ) { Object . keys ( properties ) . forEach ( function ( prop ) { target [ prop ] = properties [ prop ] ; } ) ; }
Mix properties into target
Mix properties into target