npm运行构建失败

Question

我尝试进行npm运行构建，但出现此错误：

Failed at the prestashop-classic-dev-tools@1.0.0 build script.

我不是Node和Webpack的专家。 npm run watch运行良好，但现在我想将项目添加到生产服务器中。任何帮助都会很棒。

webpack配置：

const webpack = require('webpack');
const path = require('path');
const ExtractTextPlugin = require("extract-text-webpack-plugin");

let config = {
  entry: {
    main: [
      './js/theme.js',
      './css/theme.scss'
    ]
  },
  output: {
    path: path.resolve(__dirname, '../assets/js'),
    filename: 'theme.js'
  },
  module: {
    rules: [
      {
        test: /\.js/,
        loader: 'babel-loader'
      },
      {
        test: /\.scss$/,
        use: ExtractTextPlugin.extract({
          fallback: 'style-loader',
          use: [
            {
              loader: 'css-loader',
              options: {
                minimize: true
              }
            },
            'postcss-loader',
            'sass-loader'
          ]
        })
      },
      {
        test: /.(png|woff(2)?|eot|ttf|svg)(\?[a-z0-9=\.]+)?$/,
        use: [
          {
            loader: 'file-loader',
            options: {
              name: '../css/[hash].[ext]'
            }
          }
        ]
      },
      {
        test : /\.css$/,
        use: ['style-loader', 'css-loader', 'postcss-loader']
      }
    ]
  },
  externals: {
    prestashop: 'prestashop',
    $: '$',
    jquery: 'jQuery'
  },
  plugins: [
    new ExtractTextPlugin(path.join('..', 'css', 'theme.css'))
  ]
};

config.plugins.push(
  new webpack.optimize.UglifyJsPlugin({
    sourceMap: false,
    compress: {
      sequences: true,
      conditionals: true,
      booleans: true,
      if_return: true,
      join_vars: true,
      drop_console: true
    },
    output: {
      comments: false
    },
    minimize: true
  })
);

module.exports = config;

包裹json：

{
    "name": "prestashop-classic-dev-tools",
    "version": "1.0.0",
    "description": "Tools to help while developing the Classic theme",
    "main": "index.js",
    "scripts": {
        "watch": "webpack -w",
        "build": "webpack"
    },
    "author": "PrestaShop",
    "license": "AFL-3.0",
    "devDependencies": {
        "autoprefixer": "^6.7.7",
        "babel-loader": "^5.3.2",
        "bootstrap": "4.0.0-alpha.5",
        "bootstrap-touchspin": "^3.1.1",
        "bourbon": "^4.2.6",
        "css-loader": "^0.27.3",
        "expose-loader": "^0.7.3",
        "extract-text-webpack-plugin": "^2.1.0",
        "file-loader": "^0.10.1",
        "flexibility": "^1.0.5",
        "jquery": "^2.1.4",
        "material-design-icons": "^2.1.3",
        "node-sass": "^4.5.0",
        "notosans-fontface": "~1.0.1",
        "postcss-flexibility": "^1.0.2",
        "postcss-loader": "^1.3.3",
        "sass-loader": "^6.0.3",
        "style-loader": "^0.14.0",
        "tether": "^1.1.1",
        "velocity-animate": "^1.2.3",
        "webpack": "^2.2.1",
        "webpack-sources": "^0.1.0"
    }
}