var gulp       = require('gulp');
var sass       = require('gulp-sass');
var cleanCSS   = require('gulp-clean-css');
var PRODUCTION = require('yargs').argv.prod;
var gulp_if    = require('gulp-if');

sass.compiler = require('node-sass');

gulp.task('sass', function () {
    return gulp.src('assets/scss/bundle.scss')
    .pipe(sass().on('error', sass.logError))
    .pipe(gulp_if(PRODUCTION,cleanCSS({compatibility: "ie8"})))
    .pipe(gulp.dest('dist/assets/css'));
});