var gulp = require("gulp"), sass = require("gulp-sass"), cleanCss = require("gulp-clean-css"); gulp.task("compile_scss", function () { return gulp.src('wwwroot/css/**/*.scss') .pipe(sass()) .pipe(cleanCss()) .pipe(gulp.dest('wwwroot/css')); }); gulp.task("watch", function () { gulp.watch("wwwroot/css/**/*.scss", gulp.series("compile_scss")); });