昨天刚开始使用 React，所以设置了一个演示应用程序。环境是：

1. typescript
2. 网络包
3. react和react DOM

我正在尝试设置 Bootstrap 样式。

我遵循了本教程，但对其进行了修改以适合 Typescript：

https://medium.com/@victorleungtw/how-to-use-webpack-with-react-and-bootstrap-b94d33765970

一切正常，页面显示登录表单，Bootstrap HTMl 由 React-Bootstrap 输出。但是样式并未应用于元素，它只是一个没有应用任何 Bootstrap 样式的纯 HTML 页面。我不确定配置中缺少什么：

webpack.config.js

我已经通过 npm 添加了加载器，如教程中所述，但也进行了调整以从 css 设置 Typescript module。

module.exports = {
    entry: {
        catalog: "./src/apps/CatalogApp.tsx",
        auth: "./src/apps/AuthApp.tsx"
    },
    output: {
        filename: "[name].bundle.js",
        publicPath: "/build/",
        path: __dirname + "/dist"
    },

    // Enable sourcemaps for debugging webpack's output.
    devtool: "source-map",

    resolve: {
        // Add '.ts' and '.tsx' as resolvable extensions.
        extensions: [".ts", ".tsx", ".js", ".json"]
    },

    module: {
        rules: [
            // All files with a '.ts' or '.tsx' extension will be handled by 'awesome-typescript-loader'.
            {
                test: /\.tsx?$/,
                loader: "awesome-typescript-loader"
            },

            // All output '.js' files will have any sourcemaps re-processed by 'source-map-loader'.
            {
                enforce: "pre",
                test: /\.js$/,
                loader: "source-map-loader"
            },

            // css loader
            {
                test: /\.css$/,
                loader: "typings-for-css-modules-loader?modules"
            },

            {
                test: /\.(woff|woff2)(\?v=\d+\.\d+\.\d+)?$/, 
                loader: 'url-loader?limit=10000&mimetype=application/font-woff'
              },
              {
                test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/, 
                loader: 'url-loader?limit=10000&mimetype=application/octet-stream'
              },
              {
                test: /\.eot(\?v=\d+\.\d+\.\d+)?$/, 
                loader: 'file-loader'
              },
              {
                test: /\.svg(\?v=\d+\.\d+\.\d+)?$/, 
                loader: 'url-loader?limit=10000&mimetype=image/svg+xml'
              }
        ]
    },

    // When importing a module whose path matches one of the following, just
    // assume a corresponding global variable exists and use that instead.
    // This is important because it allows us to avoid bundling all of our
    // dependencies, which allows browsers to cache those libraries between builds.
    externals: {
        "react": "React",
        "react-dom": "ReactDOM"
    }
};

身份验证应用程序.tsx

这是我的应用程序入口点。

import * as React from "react";
import * as ReactDOM from "react-dom";

import { SigninForm } from "../components/users/SigninForm";
import { MiniCart } from '../components/cart/MiniCart';
import { UserMenu } from '../components/users/UserMenu';
import * as bs from 'bootstrap/dist/css/bootstrap.css';
import * as bst from 'bootstrap/dist/css/bootstrap-theme.css';

if (document.getElementById("signin-form")) {
    ReactDOM.render(
        <SigninForm />,
        document.getElementById("signin-form")
    );
}

if (document.getElementById('cart')) {
    ReactDOM.render(
        <MiniCart />,
        document.getElementById('cart')
    );
}

if (document.getElementById('user-menu')) {
    ReactDOM.render(
        <UserMenu />,
        document.getElementById('user-menu')
    );
}

登录表单.tsx

以及登录表单的相关 UI。

import * as React from 'react';
import * as ReactDOM from "react-dom";
import { Button, Col, Row } from 'react-bootstrap';

import { Spinner } from '../shared/Spinner';

interface SigninFormProps {
}

interface SigninFormState {
  email: string;
  password: string;
}

export class SigninForm extends React.Component<SigninFormProps, SigninFormState> {

  constructor(props: SigninFormProps) {
    super(props);
    this.state = {
      email: '',
      password: ''
    };
    this.handleChange = this.handleChange.bind(this);
    this.handleSubmit = this.handleSubmit.bind(this);
  }

  handleChange(event: any) {
    this.setState({ [event.target.name]: event.target.value });
  }

  handleSubmit(event: any) {
    event.preventDefault();
    console.log('Submitting form', this.state);
  }

  render() {
    return (
      <Row>
        <Col md={8}>
          <form className="signin-form" onSubmit={this.handleSubmit}>
            <div className="form-group">
              <label htmlFor="email">Email</label>
              <input id="email" name="email" type="email" value={this.state.email} onChange={this.handleChange} />
            </div>
            <div className="form-group">
              <label htmlFor="password">Password</label>
              <input id="password" name="password" type="password" value={this.state.password} onChange={this.handleChange} />
            </div>
            <Button>Submit</Button>
          </form>
        </Col>
        <Col md={4}>
          Right Side
      </Col>
      </Row>
    );
  }
}