Convert Gulp 3 functions to Gulp V4 - gulp

Question

I am following a tutorial on react that requires gilp. The gulpfile.js used in the tutorial is based on an older version of Gulp. I am trying to convert it to V4 but am not having much luck.
I want to ensure the code is correct and am finding that the changes that I add in make parts work, but I'm sure there is a better way to convert it. This is the original code provided in the tutorial:
'use strict';
//dependencies
var gulp = require('gulp');
var sass = require('gulp-sass');
var minifyCSS = require('gulp-clean-css');
var uglify = require('gulp-uglify');
var rename = require('gulp-rename');
var changed = require('gulp-changed');
///////////////
// - SCSS/CSS
///////////////
var SCSS_SRC = './src/Assets/scss/**/*.scss';
var SCSS_DEST = './src/Assets/css';
// Compile SCSS
gulp.task('compile_scss', function(){
gulp.src(SCSS_SRC)
.pipe(sass().on('error', sass.logError))
.pipe(minifyCSS())
.pipe(rename({ suffix: '.min' }))
.pipe(changed(SCSS_DEST))
.pipe(gulp.dest(SCSS_DEST));
});
// Detect changes in SCSS
gulp.task('watch_scss', function(){
gulp.watch(SCSS_SRC, [compile_scss]);
});
// Run tasks
gulp.task('default', ['watch_scss']);
All I am looking for is the correct way to convert the above into a gulp v4 version

Answer 1

I was able to figure it out. However, I am not sure it is the most optimized code:
'use strict';
//dependencies
const gulp = require('gulp');
const sass = require('gulp-sass');
const minifyCSS = require('gulp-clean-css');
const uglify = require('gulp-uglify');
const rename = require('gulp-rename');
const changed = require('gulp-changed');
///////////////
// - SCSS/CSS
///////////////
// Compile SCSS
function scss() {
return gulp.src('./src/Assets/scss/**/*.scss')
.pipe(sass().on('error', sass.logError))
.pipe(minifyCSS())
.pipe(rename({ suffix: '.min' }))
.pipe(changed('./src/Assets/css'))
.pipe(gulp.dest('./src/Assets/css'))
}
// Watch files
function watchFiles() {
gulp.watch('./src/Assets/scss/**/*.scss', scss);
}
exports.default = watchFiles;