Engine_Rebuild/gulpfile.js

const {src, dest, series, task} = require('gulp');
const del = require('del');
const ts = require('gulp-typescript');
const npmDist = require('gulp-npm-dist');
let tsSource = ts.createProject('tsconfig.json')

let pageFiles = ['src/assets/pages/**', 'src/assets/pages/scripts/*', 'src/assets/pages/styles/*']

function clean(cb) {
    del(['build/*']);
    cb();
}

function conf() {
    return src('src/assets/**/*', {base: 'src/assets'})
        .pipe(dest('build/assets/'));
}


function root() {
    return src('src/*.js')
        .pipe(dest('build/'));
}

function pkg() {
    return src('package*')
        .pipe(dest('build/'));
}

function typescript() {
    return tsSource.src()
        .pipe(tsSource()).js
        .pipe(dest('build/util/'));
}

function dependencies() {
    // Installs dependencies into build folder

    return src(npmDist(), {base: './node_modules'})
        .pipe(dest('./build/node_modules'));

}

exports.clean = clean;

exports.default = series(conf, root, pkg, typescript, dependencies);