Var gulp = require("gulp"), livereload = require("gulp-livereload"),

Question

Var gulp = require("gulp"), livereload = require("gulp-livereload"),

sass = require("gulp-sass"),
autoprefixer = require("gulp-autoprefixer"),
cleanCSS = require("gulp-clean-css"),
rename = require("gulp-rename");

gulp.task('action', function() {

gulp.src('.assets/css/*.scss')
.pipe(sass().on('error', sass.logError))
.pipe(autoprefixer({
browsers: ['last 2 versions'],
cascade: false
}))
.pipe(gulp.dest('.assets/css/'))
.pipe(cleanCSS({
compatibility: 'ie8'
}))
.pipe(rename({
suffix: '.min'
}))
.pipe(gulp.dest('.assets/css/'))
.pipe(livereload());
});

gulp.task('default', function() {

livereload.listen();
gulp.watch('.assets/css/*.scss', ['action']);
gulp.watch('.assets/css/stack/*.scss', ['action']);
});

ТАК?