.bezierEasingMixin();报错

报错环境： vue-cli 4.4.6 + iview 2.0
因为iview使用了less自定义主题样式，所以预编译的时候出现了如下错误：

98% after emitting CopyPlugin

 ERROR  Failed to compile with 1 errors                                                                                                                                                                        10:55:46 ├F10: AM┤
 error  in ./src/assets/custom-theme/custom.less

Module build failed (from ./node_modules/less-loader/dist/cjs.js):


// https://github.com/ant-design/ant-motion/issues/44
.bezierEasingMixin();
^
Inline JavaScript is not enabled. Is it set in your options?
      Error in D:\files\study\vue\web-client\node_modules\view-design\src\styles\color\bezierEasing.less (line 110, column 0)

 @ ./src/assets/custom-theme/custom.less 4:14-238 14:3-18:5 15:22-246
 @ ./src/main.js
 @ multi (webpack)-dev-server/client?http://192.168.19.169:8080&sockPath=/sockjs-node (webpack)/hot/dev-server.js ./src/main.js

解决：
找到如下文件位置
./node_modules/less-loader/dist/utils.js

function getLessOptions(loaderContext, loaderOptions) {
  const options = (0, _clone.default)(loaderOptions.lessOptions ? typeof loaderOptions.lessOptions === 'function' ? loaderOptions.lessOptions(loaderContext) || {} : loaderOptions.lessOptions : {});
  const lessOptions = {
    plugins: [],
    relativeUrls: true,
  // 在这个位置添加这行代码==============================================
    javascriptEnabled: true,
    // We need to set the filename because otherwise our WebpackFileManager will receive an undefined path for the entry
    filename: loaderContext.resourcePath,
    ...options
  };
  lessOptions.plugins.unshift(createWebpackLessPlugin(loaderContext));
  const useSourceMap = typeof loaderOptions.sourceMap === 'boolean' ? loaderOptions.sourceMap : loaderContext.sourceMap;

  if (useSourceMap) {
    lessOptions.sourceMap = {
      outputSourceFiles: true
    };
  }

  return lessOptions;
}

运行没问题。