Gulp-sass won't compile scss files to css instead copy all files from scss folder to css folder

Question

Hello i am pretty new to a gulp. The problem is when i run default task with command "gulp" scss files dont compile instead copy to css folder This is my gulpfile.js

    var gulp = require('gulp');
    var sass = require('gulp-sass');
    var autoprefixer = require('gulp-autoprefixer');
    var browserSync = require('browser-sync');
    var runSequence = require('run-sequence');

    gulp.task('browserSync', function() {
        browserSync({
            server: {
                baseDir: 'app'
            }
        })
    })

    gulp.task('sass', function() {
        return gulp.src('app/scss/**/*.scss') 
        .pipe(autoprefixer({
            browsers: ['last 2 versions']
        }))
        .pipe(gulp.dest('app/css'))
        .pipe(browserSync.reload({
            stream: true
        }));
    })

    gulp.task('watch', function() {
        gulp.watch('app/scss/**/*.scss', ['sass']);
        gulp.watch('app/*.html', browserSync.reload); 
        gulp.watch('app/js/**/*.js', browserSync.reload); 
    })


    gulp.task('default', function(callback) {
        runSequence(['sass', 'browserSync', 'watch'],
            callback
        )
    })

directory tree

     app
      |-scss
         |- styles.scss
         |- _layout.scss
         |- _homepage.scss
         |- _profile.scss
         |- _contact.scss

       |-css

in styles.scss i have :

    $orange: #f29528;
    $image: "../images/";

    @import 'layout';
    @import 'homepage';
    @import 'profile';
    @import 'contact';

Answer 1

You don't use sass() . Try :

gulp.task('sass', function() {
    return gulp.src('app/scss/**/*.scss')
    .pipe(sass().on('error', sass.logError)) 
    .pipe(autoprefixer({
        browsers: ['last 2 versions']
    }))
    .pipe(gulp.dest('app/css'))
    .pipe(browserSync.reload({
        stream: true
    }));
})

Read more gulp-sass

Answer 2

I'm using this as my projects task handler with the files.scss and works just fine for me ATM. I hope it works for you as well.

'use strict'

// @requesting packages
const gulp         = require('gulp');
const sass         = require('gulp-sass');
const autoprefixer = require('gulp-autoprefixer');
const sourcemaps   = require('gulp-sourcemaps');
const cleancss     = require('gulp-clean-css');

// @gulp task
gulp.task('sass', () =>
    gulp.src('./scss/**/*.scss')
        .pipe(sass({
            outputStyle: 'nested',
            sourceComments: false
        }))
        // *** The debug function isn't needed you can delete it if you want
        .pipe(cleancss({debug: true}, function(details) {
            console.log(details.name + ': ' + details.stats.originalSize);
            console.log(details.name + ': ' + details.stats.minifiedSize);
        }))
        .pipe(autoprefixer({
            versions: ['last 2 browsers']
        }))
        .pipe(sourcemaps.init())
        .pipe(sass().on('error', sass.logError))
        .pipe(sourcemaps.write('.'))
        .pipe(gulp.dest('./css'))
); 

// @gulp watch task
gulp.task('default', () => {
    gulp.watch('./scss/*.scss', ['sass']);
});

Remember to change the path of the directories in the sass route.