gulpfile.js

var gulp = require('gulp');
var plumber = require('gulp-plumber');
var connect = require('connect');
var http = require('http');
var less = require('gulp-less');
var devApp = connect();

gulp.task('server', function(callback){
    devApp.use(connect.static('web/'));

    var server = http.createServer(devApp).listen(8000, '0.0.0.0');
    server.on('listening', function(){
        var devAddress = server.address(),
            devHost = devAddress === '0.0.0.0' ? 'localhost' : devAddress.address,
            url = 'http://' + devHost + ':' + devAddress.port;

        console.log('Started webserver at ' + url);
        callback();
    });
})

gulp.task('css', function(){
    return gulp.src('web/css/import.less')
        .pipe(plumber())
        .pipe(less({
            paths: [''],
            sourceMap: true
        }))
        .pipe(gulp.dest('web/css'))

});

gulp.task('watch', function(){
    gulp.watch('web/css/*.less', ['css']);
});


gulp.task('default', ['css', 'watch']);
gulp.task('connect', ['server']);