• 調(diào)試/開(kāi)發(fā)模式?jīng)]有問(wèn)題, 但是打包后會(huì)出現(xiàn)一個(gè)錯(cuò)誤

錯(cuò)誤內(nèi)容定位

• webpack.conf.js

var path = require('path');
var webpack = require('webpack');

module.exports = {
    entry: './src/main.js',
    output: {
        path: path.resolve(__dirname, './dist'),
        publicPath: '/dist/',
        filename: 'build.js'
    },
    module: {
        rules: [
            {
                test: /\.css$/,
                use: [
                    'vue-style-loader',
                    'css-loader'
                ],
            },
            {
                test: /\.scss$/,
                use: [
                    'vue-style-loader',
                    'css-loader',
                    'sass-loader'
                ],
            },
            {
                test: /\.sass$/,
                use: [
                    'vue-style-loader',
                    'css-loader',
                    'sass-loader?indentedSyntax'
                ],
            },
            {
                test: /\.vue$/,
                loader: 'vue-loader',
                options: {
                    loaders: {
                        // Since sass-loader (weirdly) has SCSS as its default parse mode, we map
                        // the "scss" and "sass" values for the lang attribute to the right configs here.
                        // other preprocessors should work out of the box, no loader config like this necessary.
                        'scss': [
                            'vue-style-loader',
                            'css-loader',
                            'sass-loader'
                        ],
                        'sass': [
                            'vue-style-loader',
                            'css-loader',
                            'sass-loader?indentedSyntax'
                        ]
                    }
                    // other vue-loader options go here
                }
            },
            {
                test: /\.js$/,
                loader: 'babel-loader',
                exclude: /node_modules/
            },
            {
                test: /\.(eot|svg|ttf|woff|woff2)(\?\S*)?$/,
                loader: 'file-loader'
            },
            {
                test: /\.(png|jpg|gif|svg)$/,
                loader: 'file-loader',
                options: {
                    name: '[name].[ext]?[hash]'
                }
            }
        ]
    },
    resolve: {
        alias: {
            'vue$': 'vue/dist/vue.esm.js'
        },
        extensions: ['*', '.js', '.vue', '.json']
    },
    devServer: {
        historyApiFallback: true,
        noInfo: true,
        overlay: true
    },
    performance: {
        hints: false
    },
    devtool: '#eval-source-map'
}

if (process.env.NODE_ENV === 'production') {
    module.exports.devtool = '#source-map'
    // http://vue-loader.vuejs.org/en/workflow/production.html
    module.exports.plugins = (module.exports.plugins || []).concat([
        new webpack.DefinePlugin({
            'process.env': {
                NODE_ENV: '"production"'
            }
        }),
        new webpack.optimize.UglifyJsPlugin({
            sourceMap: true,
            compress: {
                warnings: false
            }
        }),
        new webpack.LoaderOptionsPlugin({
            minimize: true
        })
    ])
}

請(qǐng)知道的小伙伴告知原因, Thanks?(?ω?)?