Material-ui 错误（缺少类属性转换。）答案

【问题标题】：Material-ui error (Missing class properties transform.)Material-ui 错误（缺少类属性转换。）
【发布时间】：2016-04-25 22:51:32
【问题描述】：

我一直在尝试使用 react-mounter 在 Meteor 中设置 material-ui 主题来安装组件。

我在设置时遇到了问题，然后我扩展了组件，以便可以使用 material-ui 网站上的示例设置主题。

我现在收到以下错误消息。

client/components/navbar.jsx:14:4: /client/components/navbar.jsx: 缺失类属性转换。

这里是导航栏示例代码

import React from 'react';
import AppBar from 'material-ui/AppBar';
import IconButton from 'material-ui/IconButton';
import Navigationclose from 'material-ui/svg-icons/navigation/close';
import IconMenu from 'material-ui/IconMenu';
import NavigationMoreVert from 'material-ui/svg-icons/navigation/more-vert';
import MenuItem from 'material-ui/MenuItem';
import baseTheme from 'material-ui/styles/baseThemes/lightBaseTheme';
import getMuiTheme from 'material-ui/styles/getMuiTheme';


class Navbar extends React.Component {

    childContextTypes: {
    muiTheme: React.PropTypes.object.isRequired
    }

    getChildContext() {
        return {muiTheme: getMuiTheme(baseTheme)};
    }

    render() {

        return (<AppBar
            title="Title"
            iconElementLeft={<IconButton><Navigationclose /></IconButton>}
            iconElementRight={
           <IconMenu
               iconButtonElement={
                <IconButton><NavigationMoreVert /></IconButton>
              }
               targetOrigin={{horizontal: 'right', vertical: 'top'}}
              anchorOrigin={{horizontal: 'right', vertical: 'top'}}
          >
              <MenuItem primaryText="Refresh"/>
                <MenuItem primaryText="Help"/>
              <MenuItem primaryText="Sign out"/>
           </IconMenu>
        }
        />);
    }
}


export default Navbar;

这里是 router.jsx

import React from 'react';
import {mount} from 'react-mounter';
import {MainLayout} from '/client/layouts/mainLayout.jsx';
import Content from '/client/components/content.jsx';
import Navbar from '/client/components/navbar.jsx';
import Footer from '/client/components/footer.jsx';

FlowRouter.route("/", {
    action () {
    mount(MainLayout, {
            navbar: <Navbar/>,
        content: <Content/>,
        footer: <Footer/>
});
}
});

【问题讨论】：

标签： meteor reactjs babeljs material-ui

【解决方案1】：

你需要一个 Babel 变换。 Meteor 1.3.3+ 通过 .babelrc 支持额外的插件和预设

安装静态转换：

npm install babel-plugin-transform-class-properties

# .babelrc
{
  "presets": [
    "meteor",
    "es2015",
    "stage-1"
  ],

  "plugins": [
    "transform-class-properties"
  ]
}

Support in Meteor 1.3.3

The transform

【讨论】：

如果您还没有安装 stage-1。使用npm install --save-dev babel-preset-stage-1

【解决方案2】：

我将它从扩展类更改为 React.createClass，现在它可以工作了。

import React from 'react';
import AppBar from 'material-ui/AppBar';
import IconButton from 'material-ui/IconButton';
import Navigationclose from 'material-ui/svg-icons/navigation/close';
import IconMenu from 'material-ui/IconMenu';
import NavigationMoreVert from 'material-ui/svg-icons/navigation/more-vert';
import MenuItem from 'material-ui/MenuItem';
import baseTheme from 'material-ui/styles/baseThemes/lightBaseTheme';
import getMuiTheme from 'material-ui/styles/getMuiTheme';

var Navbar = React.createClass({
    childContextTypes: {muiTheme: React.PropTypes.object},
    getChildContext() {
        return {muiTheme: getMuiTheme(baseTheme)};
    },
    navigate(event, index, item) {
        console.log('navigate', item);
        FlowRouter.go(item.route);
    },
    getMenuItems() {
        console.log('navigate1');
        return [
            { route: '/', text: 'Home' },
            { route: '/table', text: 'Table' }
        ];
    },

    render() {
        console.log('Render');
        return (<AppBar
            title="Title"
            iconElementLeft={<IconButton><Navigationclose /></IconButton>}
            iconElementRight={
           <IconMenu
               iconButtonElement={
                <IconButton><NavigationMoreVert /></IconButton>
              }
               targetOrigin={{horizontal: 'right', vertical: 'top'}}
              anchorOrigin={{horizontal: 'right', vertical: 'top'}}
           >
              <MenuItem primaryText="Refresh"/>
                <MenuItem primaryText="Help"/>
              <MenuItem primaryText="Sign out"/>
           </IconMenu>
        }
        />);
    }
});


export default Navbar;

【讨论】：