gulpfile.js

var gulp = require('gulp');
var ts = require('gulp-typescript');
var bundle = require('gulp-bundle-assets');
var del = require('del');
var runSequence = require('run-sequence');
var tslint = require('gulp-tslint');

var tsProject = ts.createProject('tsconfig.json', { sortOutput: true });

gulp.task('typescript', function () {
    var tsResult = tsProject.src()
        .pipe(ts(tsProject));
    return tsResult.js.pipe(gulp.dest('temp'));
});

gulp.task('bundle', function() {
    return gulp.src('./bundle.config.js')
        .pipe(bundle())
        .pipe(gulp.dest('dist'));
});

gulp.task('clean', function () {
    return del(['temp', 'dist']);
})

gulp.task('tslint', function(){
    return gulp.src('src/**/*.ts')
        .pipe(tslint())
        .pipe(tslint.report('verbose'));
});

gulp.task('scripts', function (callback) {
    runSequence('clean',
				'tslint',
              	['typescript'],
              	'bundle',
              	callback);
});

gulp.task('watch', function() {
    gulp.watch('src/**/*.ts', ['scripts']);
});

gulp.task('default', ['scripts']);