Riotjs-Gulpfile.js

var gulp = require('gulp'),
    shell = require('gulp-shell'),
    runSequence = require('run-sequence'),
    stylish = require('jshint-stylish'),
    concat = require('gulp-concat'),
    jshint = require('gulp-jshint'),
    uglify = require('gulp-uglify');
    
gulp.task('watch', ['riot'], function () {
    return gulp.watch('app/assets/javascripts/components/*.tag', ['riot'])
});

gulp.task('riot:lint', function () {
    return gulp.src('app/assets/javascripts/components/*.tag')
        .pipe(jshint.extract('auto'))
        .pipe(jshint())
        .pipe(jshint.reporter(stylish));
});

gulp.task('riot:concat', ['riot:lint'], function () {
    return gulp.src('app/assets/javascripts/components/*.tag')
        .pipe(concat('components.tag'))
        .pipe(gulp.dest('tmp/riot'));
});

gulp.task('riot:shell', ['riot:concat'], function () {
    return gulp.src('tmp/riot/components.tag')
        .pipe(shell('riot tmp/riot/components.tag tmp/riot/components.js --m')); //this is async
});

gulp.task('riot:sync', function (callback) {
    runSequence('riot:shell', callback);
    
});

gulp.task('riot', ['riot:sync'], function () {
    return gulp.src('tmp/riot/components.js')
        .pipe(uglify())
        .pipe(concat('components.js'))
        .pipe(gulp.dest('app/assets/javascripts'));
});