Настройка Gulp

const
    { src, dest, parallel, watch, series } = require('gulp'),
    _browserSync = require('browser-sync').create(),
    groupQueries = require('gulp-group-css-media-queries'),
    autoprefixer = require('gulp-autoprefixer'),
    sass = require('gulp-sass'),
    rename = require('gulp-rename'),
    cleanCss = require('gulp-clean-css'),
    fileInclude = require('gulp-file-include'),
    del = require('del');
 
 
const 
    sourceDir = '#source',
    distDir = 'dist';
 
const 
    mainHtmlFilename = 'index.html',
    mainStyleFilename = 'main.scss';
 
const path = {
    source: {
        html: `${sourceDir}/${mainHtmlFilename}`,
        style: `${sourceDir}/style/${mainStyleFilename}`,
        js: `${sourceDir}/js/**/*.js`,
        img: `${sourceDir}/img/**/*.{jpg|png|svg|gif|ico|webp}`,
        font: `${sourceDir}/font/**/*.{ttf|eot|off|woff2|svg}`
    },
    dist: {
        html: `${distDir}/`,
        style: {
            uncompressed: `${distDir}/style/uncompressed/`,
            compressed: `${distDir}/style/compressed/`
        },
        js: {
            uncompressed: `${distDir}/js/uncompressed/`,
            compressed: `${distDir}/js/compressed/`
        },
        img: `${distDir}/img/`,
        font: `${distDir}/font/`
    },
    watch: {
        html: `${sourceDir}/{htmlIncludes/**/*|index}.html`,
        style: `${sourceDir}/style/**/*.{css|scss|sass|less}`,
        js: `${sourceDir}/js/**/*.js`,
        img: `${sourceDir}/img/**/*.{jpg|png|svg|gif|ico|webp}`,
        font: `${sourceDir}/font/**/*.{ttf|eot|off|woff2|svg}`
    },
    clean: `${distDir}/`
}
 
function browserSync() {
    _browserSync.init({
        server: {
            baseDir: `${distDir}/`
        }
    });
}
 
function html() {
    return src(path.source.html)
        .pipe(fileInclude())
        .pipe(dest(path.dist.html))
        .pipe(_browserSync.stream());
}
 
function watchFile() {
    watch(path.watch.html, html);
}
 
function clean() {
    return del(path.clean);
}
 
const 
    build = series(clean, parallel(html)),
    _default = parallel(build, browserSync, watchFile);
 
exports.default = _default;

 gulp.src(`directory1/{directory2/**/*|index}.html`)