我是新来的gulp，当我 Build gulp它显示

./src/app/assets/styles/base.scss中的错误模块构建失败：ReferenceError：未定义self

请帮我解决这个问题 .

./src/app/modules/user/verification-forms/verification-form.component.scss中的错误模块构建失败：ReferenceError：在/ home / gv / web-app-client / node_modules / style-loader中未定义self /index.js!/home/gv/web-app-client/node_modules/css-loader/index.js?minimize!/home/gv/web-app-client/node_modules/sass-loader/index.js!/家用/ GV / web应用程序的客户端/ node_modules / postcss装载机/ index.js！/home/gv/web-app-client/src/app/modules/user/verification-forms/verification-form.component.scss ：在Object.exe上的Module._compile（module.js：635：30）的99：30（/home/gv/web-app-client/node_modules/webpack/lib/NormalModule.js:94:6） . （编译器中的/home/gv/web-app-client/node_modules/extract-text-webpack-plugin/loader.js:110:21） . （/home/gv/web-app-client/node_modules/webpack/lib/Compiler.js:251:10）/home/gv/web-app-client/node_modules/webpack/lib/Compiler.js:442：编译器下的12（/home/gv/web-app-client/node_modules/webpack/node_modules/tapable/lib/Tapable.js:202:11） . （/home/gv/web-app-client/node_modules/extract-text-webpack-plugin/loader.js:91:4）下一步（/ home / gv / web-app-client / node_modules / webpack / node_modules /在编译器上的tapable / lib / Tapable.js：204：14） . （/home/gv/web-app-client/node_modules/ts-loader/index.js:286:13）

我的webpack.config.js有

const webpack = require('webpack');
const conf = require('./gulp.conf');
const path = require('path');

const HtmlWebpackPlugin = require('html-webpack-plugin');
const autoprefixer = require('autoprefixer');

module.exports = {
  module: {


    loaders: [
      {
        test: /.json$/,
        loaders: [
          'json'
        ]
      },
      {
        test: /\.(css|scss)$/,
        loaders: [
          'style',
          'css',
          'sass',
          'postcss'
        ]
      },
      {
        test: /\.ts$/,
        exclude: /node_modules/,
        loaders: [
          'ts'
        ]
      },
      {
        test: /.html$/,
        loaders: [
          'html'
        ]
      },
      {
        test: /\.(jpe?g|png|gif)$/i,
        loaders: [
          'file?hash=sha512&digest=hex&name=[hash].[ext]',
          'image-webpack?bypassOnDebug&optimizationLevel=7&interlaced=false'
        ]
      },
      {
        test: /\.(ttf|eot|svg|woff(2)?)(\?[a-z0-9=&.]+)?$/,
        loaders: [
          'file-loader'
        ]
      }
    ]
  },
  plugins: [
    new webpack.optimize.OccurrenceOrderPlugin(),
    new webpack.NoErrorsPlugin(),
    new HtmlWebpackPlugin({
      template: conf.path.src('index.html')
    }),
    new webpack.ContextReplacementPlugin(
      /angular(\\|\/)core(\\|\/)(esm(\\|\/)src|src)(\\|\/)linker/,
      conf.paths.src
    )
  ],
  postcss: () => [autoprefixer],
  debug: true,
  devtool: 'source-map',
  output: {
    path: path.join(process.cwd(), conf.paths.tmp),
    filename: 'index.js'
  },
  resolve: {
    extensions: [
      '',
      '.webpack.js',
      '.web.js',
      '.js',
      '.ts'
    ]
  },
  entry: `./${conf.path.src('index')}`,
  ts: {
    configFileName: 'tsconfig.json'
  },
  tslint: {
    configuration: require('../tslint.json')
  }
};
webpack gulp