gulpfile.js

var gulp = require("gulp");
var copy = require("gulp-copy");
var uglify = require("gulp-uglify");
var ts = require("gulp-typescript");
var clean = require("gulp-clean");
var runSequence = require("run-sequence");
var sourcemaps = require("gulp-sourcemaps");

var tsProject = ts.createProject("tsconfig.json");

gulp.task("build", function(callback) {
  runSequence("clean", ["typescript"], ["views"], ["panel"], callback);
});

gulp.task("typescript", function() {
  var tsResult = tsProject
    .src()
    .pipe(sourcemaps.init())
    .pipe(tsProject());
  return tsResult.js.pipe(sourcemaps.write("./")).pipe(gulp.dest("dist"));
});

gulp.task("views", function() {
  return gulp
    .src(["./app/views/*"])
    .pipe(copy("./dist/views/", { prefix: 10 }));
});

gulp.task("panel", function() {
  return gulp.src(["./panel/**/*"]).pipe(copy("./dist/panel", { prefix: 1 }));
});

gulp.task("clean", function() {
  return gulp.src("./dist/", { read: false }).pipe(clean());
});

gulp.task("watch", ["build"], function() {
  gulp.watch("app/**/*.ts", ["typescript"]);
  gulp.watch("./app/views/*", ["views"]);
  gulp.watch("./panel/**/*", ["panel"]);
});