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

//Input and Output paths for sass and 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 - set the default gulp task to the watch_scss
gulp.task('default', ['watch_scss']);