gulpfile.js

var gulp = require('gulp'),
    less = require('gulp-less'),
    concat = require('gulp-concat')
    //sourcemaps = require('gulp-sourcemaps'),
    //minifycss = require('gulp-minify-css')
    

gulp.task('less', function() {
    gulp.src('./src/styles/*.less')
        //.pipe(sourcemaps.init())
        .pipe(less())
        .pipe(concat('main.css'))
        //.pipe(minifycss())
        //.pipe(sourcemaps.write())
        .pipe(gulp.dest('./src/styles'))
       
});

gulp.task('watch', function() {
    gulp.watch('./src/styles/*.less', ['less']);

});


gulp.task('default', ['less', 'watch'], function() {


})