Migrating some configuration from Gruntfile.js to gulpfile.js

gulpfile.js

var gulp = require('gulp');
var browserify = require('gulp-browserify');
var less = require('gulp-less');
var concat = require('gulp-concat');
var jshint = require('gulp-jshint');

var outDir = null;

var sources = {
  scripts: './app/scripts/**/*.js',
  less: './app/styles/**/*.less',
  copy: [
    {src: './app/templates/*', dest: ''},
    {src: './app/images/*', dest: 'images'}
  ],
  browserify: './app/scripts/main.js'
};


gulp.task('default', function () {
  gulp.run('temp');
});


gulp.task('temp', function() {
  outDir = './temp';
  gulp.run('copy', 'less', 'jshint', 'browserify');
  
  gulp.watch(sources.less, function() {
    gulp.run('less');
  });
  
  sources.copy.forEach(function(item) {
    gulp.watch(item.src, function() {
      gulp.run('copy');
    });
  });

  gulp.watch(sources.scripts, function() {
    gulp.run('jshint');
  });

  gulp.watch(sources.browserify, function() {
    gulp.run('browserify');
  });
});


gulp.task('copy', function () {
  sources.copy.forEach(function(item) {
    gulp.src(item.src)
      .pipe(gulp.dest(outDir + '/' + item.dest))
  });
});


gulp.task('less', function () {
  gulp.src(sources.less)
    .pipe(less({compress: false}))
    .pipe(gulp.dest(outDir + '/styles'));
});


gulp.task('jshint', function() {
  gulp.src(sources.scripts)
    .pipe(jshint())
    .pipe(jshint.reporter('jshint-stylish'))
});


gulp.task('browserify', function() {
  gulp.src(sources.browserify)
    .pipe(browserify())
    .pipe(concat('main.js'))
    .pipe(gulp.dest(outDir + '/scripts/'))
});

@contra Cool!