React、Babel、Webpack 不解析 jsx、意外的令牌错误

Question

我正在尝试使用 wepback 构建我的应用程序并遇到此 unexpected token 错误。我的项目的所有依赖项都很好并且是最新的我在其他地方使用同一个项目并且它构建良好但是当我尝试构建我当前的代码时它给出了相同的错误，下面是 config.js 和错误说明

这是我的app.jsx

import React                from 'react';
import ReactDOM             from 'react-dom';
import {Router}             from 'react-router';
import Routes               from '../routes/routes';
import injectTapEventPlugin from 'react-tap-event-plugin';
import { browserHistory }   from 'react-router';

require('../Config');

injectTapEventPlugin();

window.EventEmitter = {
    _events: {},
    dispatch: function (event, data, returnFirstResult) {
        if (!this._events[event]) return;
        for (var i = 0; i < this._events[event].length; i++)
        {
            if(this._events[event][i])
            {
                var r = this._events[event][i](data);

                if(returnFirstResult)   
                    return r;
            }
        }
    },
    subscribe: function (event, callback, onlyOne) {
        if (!this._events[event] || onlyOne) this._events[event] = []; // new event
        this._events[event].push(callback);
    }
};

// Render the main app react component into the app div.
// For more details see: https://facebook.github.io/react/docs/top-level-api.html#react.render
ReactDOM.render(<Router history={browserHistory}>{Routes}</Router>, document.getElementById('app'));

这是我的config.js

var webpack = require('webpack');
var path = require('path');
var buildPath = path.resolve(__dirname, '../project/public/js/');
var nodeModulesPath = path.resolve(__dirname, 'node_modules');
var TransferWebpackPlugin = require('transfer-webpack-plugin');

var config = {
    entry: {
        app: path.join(__dirname, '/app/entry_points/app.jsx'),
        vendor: ['react', 'radium'],
    },
    resolve: {
        extensions: ["", ".js", ".jsx"]
    },

    devtool: 'source-map',
    output: {
        path: buildPath,
        publicPath: '/js/',
        filename: 'mobile.[name].js' 
    },
    plugins: [
        new webpack.optimize.CommonsChunkPlugin("vendor", "mobile.vendor.js"),
        new webpack.DefinePlugin({}),
        new webpack.NoErrorsPlugin(),
    ],
    module: {
        preLoaders: [
            {
                test: /\.(js|jsx)$/,
                loader: 'eslint-loader',
                include: [path.resolve(__dirname, "src/app")],
                exclude: [nodeModulesPath]
            },
        ],
        loaders: [
            {
                test: /\.(js|jsx)$/,
                loaders: [
                    'babel-loader'
                ],
                exclude: [nodeModulesPath]
            },
            {
                test: /\.css$/,
                loader: "style-loader!css-loader"
            },
        ]
    },
    eslint: {
        configFile: '.eslintrc'
    },
};

module.exports = config;

这是我在尝试构建时遇到的错误：

ERROR in ./app/entry_points/app.jsx
Module build failed: SyntaxError: /home/zeus/Glide/project/project-mobile/app/entry_points/app.jsx: Unexpected token (46:16)
  44 | // Render the main app react component into the app div.
  45 | // For more details see: https://facebook.github.io/react/docs/top-level-api.html#react.render
> 46 | ReactDOM.render(<Router history={browserHistory}>{Routes}</Router>, document.getElementById('app'));
     |                 ^

我正在使用 react v0.14.8, react-dom v0.14.8, babel-loader ^6.2.1

Answer 1

我认为您需要使用 babel 指定预设并安装 npm 模块 babel-preset-react

loaders: [
        {
            test: /\.(js|jsx)$/,
            loaders: [
                'babel-loader'
            ],
            exclude: [nodeModulesPath],
            query: {
              presets: ['react']
            }
        },
        ...
    ]

如果您正在使用它，您还想将 es2015 添加到该预设数组。

React、Babel、Webpack 不解析 jsx、意外的令牌错误

React, Babel, Webpack not parsing jsx, unexpected token error

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