Gulp task for compiling handlebars templates

handlebars.js

var gulp = require('gulp');

gulp.task('handlebars', ['font:icon'], function () {
    var config = require('../config');
    var handlebars = require('gulp-compile-handlebars');
    var bs = require('browser-sync').get('gulp');
    var ext = require('gulp-ext');
    var plumber = require('gulp-plumber');
    var path = require('path');
    var fs = require('fs');

    var data = {};
    var dataFiles = fs.readdirSync(config.paths.handlebars.data);
    dataFiles.forEach( function(file){
        data[file.slice(0, -5)] = require(path.resolve(config.paths.handlebars.data, file));
    });

    var helpers = {
        partial: function(){
            var ps = handlebars.Handlebars.partials;
            if(typeof ps[this.partial] !== 'function')
                ps[this.partial] = handlebars.Handlebars.compile(ps[this.partial]);
            return ps[this.partial](this);
        }
    };

    var onError = function (err) {
        console.log(err);
    };

    return gulp.src(config.paths.handlebars.templates)
        .pipe(plumber( {errorHandler: onError}))
        .pipe(handlebars(data, {
            batch: config.paths.handlebars.partials,
            helpers: helpers
        }))
        .pipe(ext.replace('html'))
        .pipe(gulp.dest(config.paths.out.handlebars.templates))
        .pipe(bs.stream({once: true}));
});