Webpack errors are not logged

I’m submitting a feature request

Webpack version: 2.x

Webpack Karma version: 2.0.x

Karma version: 1.x

Please tell us about your environment: OSX 10.x

Current behavior: karma-webpack do not log webpack configuration issues. Simply reports

26 02 2017 22:08:57.640:ERROR [preprocess]: Can not load "webpack"!
  Error
    at webpack (..../node_modules/webpack/lib/webpack.js:19:9)

code here https://github.com/webpack-contrib/karma-webpack/blob/v2/src/karma-webpack.js#L65

Expected/desired behavior: Instead karma-webpack should catch expcetion thrown by webpack and log message on exception.

Replacing above line with

  var compiler;
  try {
    compiler = webpack(webpackOptions);
  } catch(e) {
    console.error(e.message);
    throw e;
  }

Report is

Invalid configuration object. Webpack has been initialised using a configuration object that does not match the API schema.
 - configuration.module has an unknown property 'preLoaders'. These properties are valid:
   object { exprContextCritical?, exprContextRecursive?, exprContextRegExp?, exprContextRequest?, loaders?, noParse?, rules?, unknownContextCritical?, unknownContextRecursive?, unknownContextRegExp?, unknownContextRequest?, unsafeCache?, wrappedContextCritical?, wrappedContextRecursive?, wrappedContextRegExp? }
   Options affecting the normal modules (`NormalModuleFactory`).
 - configuration.resolve.extensions[0] should not be empty.
26 02 2017 22:08:57.640:ERROR [preprocess]: Can not load "webpack"!
  Error
    at webpack (..../webpack/lib/webpack.js:19:9)

• What is the motivation / use case for changing the behavior? Make easier to resolve webpack configuration issues.

[joshwiens]

@marcusellis05 - It’s next on my list after css-loader to go out. Couple of hours to npm

[patope]

@d3viant0ne yes, i know. But, that is not point of this report. Could you reread this?

karma-webpack currently keeps this information hidden from user and reports only Can not load "webpack"!. Which is not very informative and generates unneccessary support requests for you.