gulpfile.js

var gulp   = require('gulp')
var pug    = require('gulp-pug')
var stylus = require('gulp-stylus')
var coffee  = require('gulp-coffee')

gulp.task('css', function() {
    gulp.src('index.styl')
        .pipe(stylus())
        .pipe(gulp.dest('../public/css'))
})

gulp.task('html', function() {
    var YOUR_LOCALS = {
        title: 'Виртуальная аудитория',
        description: 'JavaScript: online-занятия',
        requireConfig: 'js/index',
    }
    gulp.src('index.pug')
        .pipe(pug({locals: YOUR_LOCALS}))
        .pipe(gulp.dest('../public'))
})

gulp.task('js', function() {
        gulp.src('*.coffee')
            .pipe(coffee())
            .pipe(gulp.dest('../public/js'))
})

gulp.task('default', ['css', 'js', 'html'])