• Improved Sass map customization with #23260. With this change, it's now possible to override specific key value pairs instead of resetting the entire map, ideal for color scheme customization.
  
  
• Restored grid .offset- modifiers in...

• 全新的渲染返回类型：fragments 和 strings
  
• 更好的错误处理
  
• Portals 提供一流的方法将子节点渲染到一个存在于 DOM 层级之外的 DOM 节点
  
  代码:

  render() {
    // React does *not* create a new div. It renders the children into `domNode`.
    // `domNode` is any valid DOM node, regardless of its location in the DOM.
    return ReactDOM.createPortal(
      this.props.children,
      domNode,
    );
  }

  ...

npm install webpack@3.0.0 --save-dev

yarn add webpack@3.0.0 --dev

1. Webpack 3 的新特性

• node_modules no longer mangle to ~ in stats [breaking change]...