gulpfile.js

'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', gulp.series(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', gulp.series(function() {
	gulp.watch(SCSS_SRC, gulp.series(['compile_scss']));
}));

// run tasks
gulp.task('default', gulp.series(['watch_scss', 'compile_scss']));