File Structure

Folders

• - assets: initially empty, put your own asset files as required for your project.
• - config: default Bootstrap Barrio Subtheme files.
• - css: generated css files. Initial files included only to avoid errors before gulp is executed. Will be replaced upon gulp execution
• - images: subtheme images
• - js: required javascript files copied on gulp process.
• - scss: complete rewrite of Bootstrap Barrio css files on scss format including bootstrap variables
• - templates: custom template overrides. Initially empty.

gulpfile.js contains gulp configuration:

var gulp = require('gulp');
var browserSync = require('browser-sync').create();
var sass = require('gulp-sass');
var concat = require("gulp-concat");
var minifyCss = require("gulp-minify-css");
var uglify = require("gulp-uglify");

// Compile sass into CSS & auto-inject into browsers
gulp.task('sass', function() {
    return gulp.src(['node_modules/bootstrap/scss/bootstrap.scss', 'scss/style.scss'])
        .pipe(sass().on('error', sass.logError))
        .pipe(gulp.dest("css"))
        .pipe(sass({ outputStyle: 'compressed' }))
        // .pipe(minifyCss())
        .pipe(browserSync.stream());
});

// Move the javascript files into our js folder
gulp.task('js', function() {
    return gulp.src(['node_modules/bootstrap/dist/js/bootstrap.min.js', 'node_modules/jquery/dist/jquery.min.js', 'node_modules/popper.js/dist/umd/popper.min.js'])
        .pipe(gulp.dest("js"))
        .pipe(browserSync.stream());
});

// Static Server + watching scss/html files
gulp.task('serve', ['sass'], function() {

    browserSync.init({
        server: "."
    });

    gulp.watch(['node_modules/bootstrap/scss/bootstrap.scss', 'scss/*.scss'], ['sass']);
    //    gulp.watch("src/*.html").on('change', browserSync.reload);
});

gulp.task('default', ['js', 'serve']);