我刚刚在Visual Studio 2017中创建了一个新的React应用程序(不是VSCode,因为关于此错误的许多其他文章似乎都在使用),并且它设置了以下内容的默认文件内容:
package.json
{
"name": "React",
"version": "0.1.0",
"private": true,
"dependencies": {
"bootstrap": "^3.3.7",
"react": "^16.0.0",
"react-bootstrap": "^0.31.5",
"react-dom": "^16.0.0",
"react-router-bootstrap": "^0.24.4",
"react-router-dom": "^4.2.2",
"react-scripts": "1.0.17",
"rimraf": "^2.6.2"
},
"scripts": {
"start": "rimraf ./build && react-scripts start",
"build": "react-scripts build",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject"
}
}
appsettings.json
{
"Logging": {
"LogLevel": {
"Default": "Warning"
}
},
"AllowedHosts": "*"
}
App.js
import React, { Component } from 'react';
import { Route } from 'react-router';
import { Layout } from './components/Layout';
import { Home } from './components/Home';
import { FetchData } from './components/FetchData';
import { Counter } from './components/Counter';
export default class App extends Component {
displayName = App.name
render() {
return (
<Layout>
<Route exact path='/' component={Home} />
<Route path='/counter' component={Counter} />
<Route path='/fetchdata' component={FetchData} />
</Layout>
);
}
}
我正在尝试按照教程添加新组件,但是当我添加以下组件时,它抱怨“(JS)'类型断言表达式'只能在.ts文件中使用”错误消息:
我发现了很多其他的帖子,它们说要添加以下代码,但已将其添加到appsettings.json文件中,但没有任何效果:
"javascript.validate.enable": false
围绕该主题的大多数帖子似乎也在使用VSCode,因此不确定是否可以使我在VS2017上有所作为?关于我需要更改以使其能够编译和运行的任何想法?