cssnext/cssnext

import webpack from "webpack";
import color from "chalk";

export default (webpackConfig, log, cb) => {
  webpack(webpackConfig, (err, stats) => {
    if (err) {
      throw err;
    }

    if (stats.hasErrors()) {
      stats.compilation.errors.forEach(item =>
        log(...[color.red("Error:"), ...item.message.split("\n")])
      );
      throw new Error("webpack build failed with errors");
    }
    if (stats.hasWarnings()) {
      stats.compilation.warnings.forEach(item =>
        log(...[color.yellow("Warning:"), ...item.message.split("\n")])
      );
    }

    cb(stats);
  });
};