scss browsersync how to track?

Question

gulp.js

Help, there is such a galp file, the page is updated only on html files, you need to update on any scss when saving

let project_folder = require("path").basename(__dirname);
let source_folder = "#src";

let fs = require('fs');

let path = {
    build: {
        html: project_folder + "/",
        css: project_folder + "/css/",
        js: project_folder + "/js/",
        img: project_folder + "/img/",
        fonts: project_folder + "/fonts/",
    },
    src: {
        html: [source_folder + "/*.html", "!" + source_folder + "/_*.html"],
        css: source_folder + "/scss/main.scss", 
        js: source_folder + "/js/script.js",
        img: source_folder + "/img/**/*.{jpg,png,svg,gif,ico,webp}",
        fonts: source_folder + "/fonts/*.ttf",
    },
    watch: {
        html: source_folder + "/**/*.html",
        css: source_folder + "/scss/**/*.scss",
        js: source_folder + "/js/**/*.js",
        img: source_folder + "/img/**/*.{jpg,png,svg,gif,ico,webp}",
    },
    clean: "./" + project_folder + "/"
}

let {src, dest} = require('gulp'),
    gulp = require('gulp'),
    browsersync = require("browser-sync").create(),
    fileinclude = require("gulp-file-include"),
    del = require("del"),
    scss = require("gulp-sass"),
    autoprefixer = require("gulp-autoprefixer"),
    group_media = require("gulp-group-css-media-queries"),
    clean_css = require("gulp-clean-css"),
    rename = require("gulp-rename"),
    uglify = require("gulp-uglify-es").default,
    imagemin = require("gulp-imagemin"),
    webp = require("gulp-webp"),
    webpcss = require("gulp-webpcss"),
    webphtml = require("gulp-webp-html"),
    svgSprite = require("gulp-svg-sprite"),
    ttf2woff = require("gulp-ttf2woff"),
    ttf2woff2 = require("gulp-ttf2woff2"),
    fonter = require("gulp-fonter");
    


function browserSync(params){
    browsersync.init({
        server:{
            baseDir: "./" + project_folder + "/" 
        },
        port: 3000,
        notify: false
    })
}

function html(){
    return src(path.src.html)
    .pipe(fileinclude())
    .pipe(webphtml())
    .pipe(dest(path.build.html))
    .pipe(browsersync.stream())
}

function css(){
    return src(path.src.css)
    .pipe(
        scss({
           outputStyle: "expanded" 
        })
    )
    .pipe(group_media())
    .pipe(
        autoprefixer({
            grid: "autoplace",
            overrideBrowserslist: [
                "last 5 version",
                "> 1%",
                "IE 10"
               ],
            cascade: true 
        })
    )
    .pipe(webpcss({
        webpClass: '.webp',
        noWebpClass: '.no-webp'
    })
    )
    .pipe(dest(path.build.css))
    .pipe(clean_css())
    .pipe(
        rename({
            extname: ".min.css"
        })
    )
    .pipe(dest(path.build.css))
    .pipe(browsersync.stream()) 
}

function js(){
    return src(path.src.js)
    .pipe(fileinclude())
    .pipe(dest(path.build.js))
    .pipe(uglify())
    .pipe(
        rename({
            extname: ".min.js"
        })
    )
    .pipe(dest(path.build.js))
    .pipe(browsersync.stream())
}


function images(){
    return src(path.src.img)
    .pipe(
        webp({
            quality: 70
        })
    )
    .pipe(dest(path.build.img))
    .pipe(src(path.src.img))
    .pipe(
        imagemin({
            progressive: true,
            svgoOlugins: [{removeViewBox: false}],
            interlaced: true,
            optimizationLevel: 3 // 0 to 7 
        })
    )
    .pipe(dest(path.build.img))
    .pipe(browsersync.stream())
}

gulp.task("otf2ttf", function () {
    return gulp.src([source_folder + '/fonts/*.otf'])
    .pipe(fonter({
        formats: ['ttf']
    }))
    .pipe(dest(source_folder + '/fonts/'));
})

gulp.task("svgSprite", function () {
    return gulp.src([source_folder + '/iconsprite/*.svg'])
    .pipe(svgSprite({
        mode: {
            stack: {
                sprite: "../icons/icons.svg",
                example: true
            }
        },
    }
    ))
    .pipe(dest(path.build.img))
})

function fonts(params){
    src(path.src.fonts)
    .pipe(ttf2woff())
    .pipe(dest(path.build.fonts));
    return src(path.src.fonts)
    .pipe(ttf2woff2())
    .pipe(dest(path.build.fonts));
}

function fontsStyle(params) {
  let file_content = fs.readFileSync(source_folder + '/scss/fonts.scss');
  if (file_content == '') {
    fs.writeFile(source_folder + '/scss/fonts.scss', '', cb);
    return fs.readdir(path.build.fonts, function (err, items) {
      if (items) {
        let c_fontname;
        for (var i = 0; i < items.length; i++) {
          let fontname = items[i].split('.');
          fontname = fontname[0];
          if (c_fontname != fontname) {
            fs.appendFile(source_folder + '/scss/fonts.scss', '@include font("' + fontname + '", "' + fontname + '", "400", "normal");\r\n', cb);
          }
          c_fontname = fontname;
        }
      }
    })
  }
}

function cb(){}

function watchFiles(params){
    gulp.watch([path.watch.html],html);
    gulp.watch([path.watch.css],css);
    gulp.watch([path.watch.js],js);
    gulp.watch([path.watch.img],images);
}

function clean(params){
    return del(path.clean);
}


let build = gulp.series(clean, gulp.parallel(js,css,html,images, fonts),fontsStyle);
let watch = gulp.parallel(build, watchFiles, browserSync);

exports.fontsStyle = fontsStyle;
exports.fonts = fonts;
exports.images = images;
exports.js = js;
exports.css = css;
exports.html = html;
exports.build = build;
exports.watch = watch;
exports.default = watch;