gulpfile.js

var gulp = require('gulp');
var runSequence = require('run-sequence');
var del = require('del');
var vinylPaths = require('vinyl-paths');
var to5 = require('gulp-6to5');
var jshint = require('gulp-jshint');
var stylish = require('jshint-stylish');
var yuidoc = require("gulp-yuidoc");
var changelog = require('conventional-changelog');
var assign = Object.assign || require('object.assign');
var fs = require('fs');
var bump = require('gulp-bump');
var browserSync = require('browser-sync');
var changed = require('gulp-changed');
var plumber = require('gulp-plumber');
var tools = require('aurelia-tools');
var protractor = require("gulp-protractor").protractor;
var webdriver_update = require('gulp-protractor').webdriver_update;

var path = {
  source:'src/**/*.js',
  html:'src/**/*.html',
  style:'styles/**/*.css',
  output:'dist/',
  doc:'./doc',
  e2eSpecsSrc: 'test/e2e/src/*.js',
  e2eSpecsDist: 'test/e2e/dist/'
};

var compilerOptions = {
  filename: '',
  filenameRelative: '',
  blacklist: [],
  whitelist: [],
  modules: '',
  sourceMap: true,
  sourceMapName: '',
  sourceFileName: '',
  sourceRoot: '',
  moduleRoot: '',
  moduleIds: false,
  experimental: false,
  format: {
    comments: false,
    compact: false,
    indent: {
      parentheses: true,
      adjustMultilineComment: true,
      style: "  ",
      base: 0
    }
  }
};

var jshintConfig = {esnext:true};

gulp.task('clean', function() {
  return gulp.src([path.output])
  .pipe(vinylPaths(del));
});

gulp.task('build-system', function () {
  return gulp.src(path.source)
  .pipe(plumber())
  .pipe(changed(path.output, {extension: '.js'}))
  .pipe(to5(assign({}, compilerOptions, {modules:'system'})))
  .pipe(gulp.dest(path.output));
});

gulp.task('build-html', function () {
  return gulp.src(path.html)
  .pipe(changed(path.output, {extension: '.html'}))
  .pipe(gulp.dest(path.output));
});

gulp.task('lint', function() {
  return gulp.src(path.source)
  .pipe(jshint(jshintConfig))
  .pipe(jshint.reporter(stylish));
});

gulp.task('doc-generate', function(){
  return gulp.src(path.source)
  .pipe(yuidoc.parser(null, 'api.json'))
  .pipe(gulp.dest(path.doc));
});

gulp.task('doc', ['doc-generate'], function(){
  tools.transformAPIModel(path.doc);
});

gulp.task('bump-version', function(){
  return gulp.src(['./package.json'])
  .pipe(bump({type:'patch'})) //major|minor|patch|prerelease
  .pipe(gulp.dest('./'));
});

gulp.task('changelog', function(callback) {
  var pkg = JSON.parse(fs.readFileSync('./package.json', 'utf-8'));

  return changelog({
    repository: pkg.repository.url,
    version: pkg.version,
    file: path.doc + '/CHANGELOG.md'
  }, function(err, log) {
    fs.writeFileSync(path.doc + '/CHANGELOG.md', log);
  });
});

gulp.task('build', function(callback) {
  return runSequence(
    'clean',
    ['build-system', 'build-html'],
    callback
  );
});

gulp.task('webdriver_update', webdriver_update);

gulp.task('build-e2e', function () {
  return gulp.src(path.e2eSpecsSrc)
  .pipe(plumber())
  .pipe(to5())
  .pipe(gulp.dest(path.e2eSpecsDist));
});

gulp.task('e2e', ['webdriver_update', 'build-e2e'], function(cb) {
  return gulp.src(path.e2eSpecsDist + "/*.js")
  .pipe(protractor({
    configFile: "protractor.conf.js",
    args: ['--baseUrl', 'http://127.0.0.1:9000']
  }))
  .on('error', function(e) { throw e; });
});

gulp.task('update-own-deps', function(){
  tools.updateOwnDependenciesFromLocalRepositories();
});

gulp.task('build-dev-env', function () {
  tools.buildDevEnv();
});

gulp.task('serve', ['build'], function(done) {
  browserSync({
    open: false,
    port: 9000,
    server: {
      baseDir: ['.'],
      middleware: function (req, res, next) {
        res.setHeader('Access-Control-Allow-Origin', '*');
        next();
      }
    }
  }, done);
});

function reportChange(event){
  console.log('File ' + event.path + ' was ' + event.type + ', running tasks...');
}

gulp.task('watch', ['serve'], function() {
  gulp.watch(path.source, ['build-system', browserSync.reload]).on('change', reportChange);
  gulp.watch(path.html, ['build-html', browserSync.reload]).on('change', reportChange);
  gulp.watch(path.style, browserSync.reload).on('change', reportChange);
});

gulp.task('prepare-release', function(callback){
  return runSequence(
    'build',
    'lint',
    'bump-version',
    'doc',
    'changelog',
    callback
  );
});