first snippest

js

var gulp         = require('gulp'),
	sass 		 = require('gulp-sass'),
	autoprefixer = require('gulp-autoprefixer'),
	uglify       = require('gulp-uglify'),
	rename       = require('gulp-rename'),
	cssmin       = require('gulp-cssmin'),
	imagemin     = require('gulp-imagemin');

 
	gulp.task('images', function () {
	    gulp.src('static/img/*')
	        .pipe(imagemin({
	            progressive: true,
	            optimizationLevel: 3,
	            svgoPlugins: [{removeViewBox: false}]
	        }))
	        .pipe(gulp.dest('dist/img/'));
	});

	gulp.task('styles', function() {
		gulp.src('static/css/*.scss')
			.pipe(sass())
			.pipe(autoprefixer('last 5 versions'))
			.pipe(cssmin())
			.pipe(gulp.dest('dist/css/'));

	});

	gulp.task('javascript', function() {
		gulp.src('static/js/*.js')
			.pipe(uglify())
			.pipe(rename({
				suffix: ".min",
		    }))
			.pipe(gulp.dest('dist/js/'));
	});