gulpfile.js

var gulp = require('gulp');
var tslint = require('gulp-tslint');
var exec = require('child_process').exec;
var jasmine = require('gulp-jasmine');
var gulp = require('gulp-help')(gulp);
var tsconfig = require('gulp-tsconfig-files');
var path = require('path');
var inject = require('gulp-inject');
var gulpSequence = require('gulp-sequence');
var del = require('del');

var typeDefsPath = (function (tsd) {
  return tsd.path || 'typings';
})(require('./tsd.json'));

var tsFilesGlob = (function (c) {
  return c.filesGlob || c.files || '**/*.ts';
})(require('./tsconfig.json'));

gulp.task('tsconfig_files', 'Update files section in tsconfig.json', function () {
  gulp.src(tsFilesGlob).pipe(tsconfig());
});

gulp.task('gen_tsrefs', 'Generates the app.d.ts references file dynamically for all application *.ts files', function () {
  var target = gulp.src(path.join('.', typeDefsPath, 'app.d.ts'));
  var sources = gulp.src([path.join('.', 'src', '**', '*.ts')], { read: false });
  return target.pipe(inject(sources, {
    starttag: '//{',
    endtag: '//}',
    transform: function (filepath) {
      return '/// <reference path="..' + filepath + '" />';
    }
  })).pipe(gulp.dest(path.join('.', typeDefsPath)));
});

gulp.task('clean', 'Cleans the generated js files from lib directory', function () {
  return del([
    'lib/**/*'
  ]);
});

gulp.task('tslint', 'Lints all TypeScript source files', function () {
  return gulp.src(tsFilesGlob)
    .pipe(tslint())
    .pipe(tslint.report('verbose'));
});

gulp.task('_build', 'INTERNAL TASK - Compiles all TypeScript source files', function (cb) {
  exec('tsc', function (err, stdout, stderr) {
    console.log(stdout);
    console.log(stderr);
    cb(err);
  });
});

//run tslint task, then run _tsconfig_files and _gen_tsrefs in parallel, then run _build
gulp.task('build', 'Compiles all TypeScript source files and updates module references', gulpSequence('tslint', ['tsconfig_files', 'gen_tsrefs'], '_build'));

gulp.task('test', 'Runs the Jasmine test specs', ['build'], function () {
  return gulp.src('test/*.js')
    .pipe(jasmine());
});