gulpfile.js

var gulp = require("gulp");
var browserify = require("browserify");
var source = require('vinyl-source-stream');
var tsify = require("tsify");
var browserSync = require('browser-sync').create();
var del = require('del');

var paths = {
    pages: ['src/**/*.html'],
    assets: ['assets/**/*.png'],
    vendor: ['vendor/**/*.js']
};

// for now we are going to have to run gulp clean manually
gulp.task('clean', function(cb) {
    return del(['built/**'], function(err) {
        cb(err);
    });
});

gulp.task('copy-pages', function() {
    return gulp.src(paths.pages)
        .pipe(gulp.dest("built"));
});

gulp.task("copy-assets", function () {
    return gulp.src(paths.assets)
        .pipe(gulp.dest("built/assets"));
});

gulp.task("copy-vendor", function () {
    return gulp.src(paths.vendor)
        .pipe(gulp.dest("built/vendor"));
});

gulp.task("default", ["copy-pages", "copy-assets", "copy-vendor"], function () {
    return browserify({
        basedir: 'src/lib',
        debug: true,
        entries: ['./game.ts'],
        cache: {},
        packageCache: {}
    })
    .plugin(tsify)
    .bundle()
    .pipe(source('game.js'))
    .pipe(gulp.dest("built"));
});

gulp.task('watch', ['default'], function(done) {
    browserSync.reload();
    done();
});

gulp.task('serve', ['default'], function () {

    // Serve files from the root of this project
    browserSync.init({
        server: {
            baseDir: "built"
        },
        ghostMode: false,
        online: false
    });

    gulp.watch(["src/**/*.*"], ['watch']);
});