poe-ui/server/dev-builder.js

module.exports = function initBuilder(r, app, opts, NODE_ENV) {
  var DEVELOPMENT = NODE_ENV === 'development';
  if (!DEVELOPMENT) return;

  var WebpackDevServer = r('webpack-dev-server');
  var colors = require('colors');

  if (!WebpackDevServer) return;

  app.on('ready', function(httpServer) {
    var config = app.builder;

    var compiler = config.load();
    var WEBPACK_DEBUG = typeof process.env.WEBPACK_DEBUG !== 'undefined';
    var server = new WebpackDevServer(compiler, {
      contentBase: false,
      publicPath: '',
      hot: true,
      stats: WEBPACK_DEBUG
    });

    app.use('/build', 'webpack', server.app);

    if (!WEBPACK_DEBUG) {
      compiler.plugin('done', function(stats) {
        var warns = stats.compilation.warnings;
        if (warns.length) {
          console.log('====WARNINGS====\n'.yellow);
          warns.forEach(function(warn) {
            console.warn(((warn.module || {}).context || '').yellow + ':\n' + warn.message + '\n');
          })
        }

        var errs = stats.compilation.errors;
        if (errs.length) {
          console.error('====ERRORS====\n'.red);
          errs.forEach(function(err) {
            console.error((err.module || {}).context.red + ':\n' + err.stack || err.message || err);
          });
        }
      });
    }

    httpServer.listen = function() {}

    server.listeningApp = httpServer;
    server.listen();

    delete httpServer.listen;

    process.on('SIGTERM', close);
    process.on('SIGINT', close);
    function close() {
      server.close();
    }
  });
}