报错信息

DeprecationWarning: loaderUtils.parseQuery() received a non-string value which can be problematic, see https://github.com/webpack/loader-utils/issues/56
parseQuery() will be replaced with getOptions() in the next major version of loader-utils.

经查,是babel-loader版本问题
原来"babel-loader": “6.2.4”,改为 “babel-loader”: “7.1.1” 就解决了