What to fix in the file so that it is normally updated via browsersync in gulp, (does not want to update automatically)?

Question

gulp.js

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/style.scss",
        js: source_folder + "/js/main.js",
        img: source_folder + "/img/**/*.{jpg,png,svg,gif,ico,webp,jpeg}",
        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,jpeg}",
        
    },

    clean: "./" + project_folder + "/"
}

// ПеременныЕ

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"),
    imagemin = require ("gulp-imagemin"),
    webp = require ("gulp-webp"),
    webphtml = require ("gulp-webp-html"),
    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({
                overrideBrowserslist: ["last 5 versions"],
                cascade: true
            })
        )
        .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(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,
            svgoPlugins: [{ removeViewBox: false }],
            interlaced: true,
            optimizationLevel: 3 //0 to 7
        })
    )
        .pipe(dest(path.build.img))
        .pipe(browsersync.stream()) 
}


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));
};


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


// слежка

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;

Answer 1

Remove .pipe (browsersync.stream()) from the tasks chain
After the line let browsersync = require("browser-sync").create(), write const bs = browserSync.create() watch file changes write like this:
gulp.watch(path.watch.html, html).on('change', bs.reload);