gulpfile.js

var gulp = require('gulp');
var gutil = require("gulp-util");
var concat = require('gulp-concat');
var webpack = require("webpack");
var del = require('del');
var exec = require('gulp-exec');
var paths = require('./config/paths');


var filename = 'nashorn-polyfill.js'
var srcFiles = ['./lib/global-polyfill.js', './lib/timer-polyfill.js', './build/nashorn-polyfill.webpack.js']

gulp.task('clean:build', function () {
  return del(paths.build());
});

gulp.task('clean:dist', function () {
  return del(paths.dist());
});

function webpackCompile (webpackConfig, callback) {
  return webpack(webpackConfig, function(err, stats) {
    if(err) throw new gutil.PluginError("webpack", err);
    gutil.log("[webpack]", stats.toString({
      // output options
    }));

    gulp.src(srcFiles)
      .pipe(concat(filename))
      .pipe(gulp.dest('build/'));
    callback();
  });
}

gulp.task('scripts', ['clean:build'], function (callback) {
  var webpackConfig = require('./config/webpack.config.dev');
  return webpackCompile(webpackConfig, callback)
});

gulp.task('scripts:prod', ['clean:build'], function (callback) {
  var webpackConfig = require('./config/webpack.config.prod');
  return webpackCompile(webpackConfig, callback)
});

function copyJsToDist () {
  gulp.src('build/' + filename)
    .pipe(gulp.dest('dist/'));
}

gulp.task('scripts:dist', ['clean:dist', 'scripts:prod'], function () {
  setTimeout(copyJsToDist, 1000);
});

function addGlobalPolyfillArg(cmd) {
  return cmd + ' -scripting ' + paths.lib('global-polyfill.js') + ' ' +
    paths.test('util', 'it.js');
}
function addTimerPolyfillArg(cmd) {
  return addGlobalPolyfillArg(cmd) + ' ' + paths.lib('timer-polyfill.js')
}
function addXmlHttpRequestPolyfillArg(cmd) {
  var command = cmd + ' -classpath ' + paths.test('lib', 'httpcore-4.4.5.jar');
  var command = command + ':' + paths.test('lib', 'httpclient-4.5.2.jar');
  var command = command + ':' + paths.test('lib', 'httpcore-nio-4.4.5.jar');
  var command = command + ':' + paths.test('lib', 'httpasyncclient-4.1.2.jar');
  var command = command + ':' + paths.test('lib', 'commons-logging-1.2.jar');

  command = addGlobalPolyfillArg(command);
  command = command + ' ' + paths.lib('timer-polyfill.js');
  command = command + ' ' + paths.test('util', 'es6-promise-polyfill.js');
  command = command + ' ' + paths.test('util', 'fetch.js');
  return command + ' ' + paths.lib('xml-http-request-polyfill.js')
}
function addBlobPolyfillArg(cmd) {
  return addGlobalPolyfillArg(cmd) + ' ' + paths.lib('blob-polyfill.js')
}

var jjsCmd = '/usr/bin/jjs';

function execCallback(callback) {
  return function(err, stdout, stderr) {
    console.log(stdout);
    console.error(stderr);
    callback(err);
  }
}

gulp.task('test:setTimeout', function (callback) {
  var cmd = addTimerPolyfillArg(jjsCmd);
  return gulp.src('test/timer/setTimeout.js')
    .pipe(exec(cmd + ' <%= file.path %>', execCallback(callback)));
});

gulp.task('test:clearTimeout', function (callback) {
  var cmd = addTimerPolyfillArg(jjsCmd);
  return gulp.src('test/timer/clearTimeout.js')
    .pipe(exec(cmd + ' <%= file.path %>', execCallback(callback)));
});

gulp.task('test:setInterval', function (callback) {
  var cmd = addTimerPolyfillArg(jjsCmd);
  return gulp.src('test/timer/setInterval.js')
    .pipe(exec(cmd + ' <%= file.path %>', execCallback(callback)));
});

gulp.task('test:clearInterval', function (callback) {
  var cmd = addTimerPolyfillArg(jjsCmd);
  return gulp.src('test/timer/clearInterval.js')
    .pipe(exec(cmd + ' <%= file.path %>', execCallback(callback)));
});

function testXmlHttpRequest(file, callback) {
  var cmd = addXmlHttpRequestPolyfillArg(jjsCmd);
  return gulp.src(file)
    .pipe(exec(cmd + ' <%= file.path %>', execCallback(callback)));
}

gulp.task('test:xhr:getUrl', function (callback) {
  return testXmlHttpRequest('test/xhr/getUrl.js', callback);
});

gulp.task('test:xhr:postUrl', function (callback) {
  return testXmlHttpRequest('test/xhr/postUrl.js', callback);
});

gulp.task('test:timers', ['test:setTimeout', 'test:clearTimeout', 'test:setInterval', 'test:clearInterval']);

gulp.task('test:xhr', ['test:xhr:getUrl', 'test:xhr:postUrl']);

gulp.task('test', ['test:timers', 'test:xhr']);