gulpfile.js

/*jslint node: true */ // allow 'require' global
'use strict';

var gulp = require('gulp'),
  concat = require('gulp-concat'),
  del = require('del'),
  util = require('gulp-util'),
  es = require('event-stream'),
  ts = require('gulp-typescript'),
  bump = require('gulp-bump'),
  git = require('gulp-git'),
  filter = require('gulp-filter'),
  tagVersion = require('gulp-tag-version'),
  inquirer = require('inquirer'),
  sourcemaps = require('gulp-sourcemaps'),
  ngAnnotate = require('gulp-ng-annotate'),
  uglify = require('gulp-uglify'),
  rename = require('gulp-rename'),
  browserSync = require('browser-sync');

var sources = {
  app: {
    ts: ['./src/**/*.ts'],
  },
  example: './examples/'
};

var destinations = {
  js: './dist/'
};

gulp.task('js:app', function() {
  var tsStream = gulp.src(sources.app.ts)
    .pipe(sourcemaps.init())
    .pipe(ts({
      declarationFiles: false,
      noExternalResolve: false,
      noLib: false,
      sortOutput: true
    }));

  es.merge(
    tsStream.dts
      .pipe(gulp.dest(destinations.js)),
    tsStream.js
      .pipe(concat('main.js'))
      .pipe(ngAnnotate())
      .pipe(sourcemaps.write())
      .pipe(gulp.dest(destinations.js))
      .pipe(uglify({
        angular: true
      }))
      .pipe(rename({
        extname: '.min.js'
      }))
      .pipe(gulp.dest(destinations.js))
  );
});

// deletes the dist folder for a clean build
gulp.task('clean', function() {
  del(['./dist'], function(err, deletedFiles) {
    if(deletedFiles.length) {
      util.log('Deleted', util.colors.red(deletedFiles.join(' ,')) );
    } else {
      util.log(util.colors.yellow('/dist directory empty - nothing to delete'));
    }
  });
});

gulp.task('serve', function () {
  browserSync({
    notify: false,
    port: 9000,
    server: {
      baseDir: [sources.example]
    }
  });

  gulp.watch([
    sources.example + '**/*'
  ]).on('change', browserSync.reload);
});

gulp.task('build', [
  'js:app'
]);

gulp.task('bump', function() {

  var questions = [
    {
      type: 'input',
      name: 'bump',
      message: 'Are you sure you want to bump the patch version? [Y/N]'
    }
  ];

  inquirer.prompt( questions, function( answers ) {
    if(answers.bump === 'Y') {

      return gulp.src(['./package.json', './bower.json'])
          .pipe(bump({type: 'patch'}))
          .pipe(gulp.dest('./'))
          .pipe(git.commit('bump patch version'))
          .pipe(filter('package.json'))  // read package.json for the new version
          .pipe(tagVersion());           // create tag

    }
  });
});

// watch scripts, styles, and templates
gulp.task('watch', function() {
  gulp.watch(sources.app.ts, ['js:app']);
});

// default
gulp.task('default', ['build', 'watch']);