npm build完以后，出现以下警告：

WARNING  Compiled with 2 warnings                                                                                                                                                                                 17:51:33

warning  

asset size limit: The following asset(s) exceed the recommended size limit (244 KiB).
This can impact web performance.
中略

warning  

entrypoint size limit: The following entrypoint(s) combined asset size exceeds the recommended limit (244 KiB). This can impact web performance.
中略

在vue.config.js中，追加以下设定：

module.exports = {
  configureWebpack: {
    performance: {
      hints:'warning',
      maxEntrypointSize: 50000000,
      maxAssetSize: 30000000,
      assetFilter: function(assetFilename) {
        return assetFilename.endsWith('.js');
      }
    }
  }
}

详细请参考: https://www.webpackjs.com/configuration/performance/