Setting Gulp for Sass, Coffee y Browserify

gulpfile.js

var gulp = require('gulp');
var gutil = require('gulp-util');
var concat = require('gulp-concat');
var sass = require('gulp-sass');
var minifyCss = require('gulp-minify-css');
var rename = require('gulp-rename');
var coffee = require('gulp-coffee');
var browserify = require('gulp-browserify')

var paths = {
  sass: ['./public/scss/**/*.scss', './public/sass/**/*.sass'],
  coffee: ['./public/coffee/**/*.coffee']
};

gulp.task('default', ['watch']);

gulp.task('coffee', function() {
  gulp.src('./public/coffee/*.coffee')
    .pipe(coffee({bare: true}).on('error', gutil.log))
    .pipe(gulp.dest('./public/js/'))
});

gulp.task('browserify', function() {
  gulp.src('./public/coffee/app.coffee').pipe(browserify({
    transform: ['coffeeify'],
    extensions: ['.coffee']
  })).pipe(rename('app.js'))
  .pipe(gulp.dest('./public/js'));
});

gulp.task('sass', function(done) {
  gulp.src('./public/sass/app.sass')
    .pipe(sass({
      errLogToConsole: true
    }))
    .pipe(gulp.dest('./public/css/'))
    .pipe(minifyCss({
      keepSpecialComments: 0
    }))
    .pipe(rename({ extname: '.min.css' }))
    .pipe(gulp.dest('./public/css/'))
    .on('end', done);
});


gulp.task('watch', function() {
  gulp.watch(paths.sass, ['sass']);
  gulp.watch(paths.coffee, ['browserify']);
});

package.json

{
  "name": "SocialDonor",
  "version": "1.0.0",
  "dependencies": {
    "coffeeify": "^1.1.0",
    "gulp": "^3.5.6",
    "gulp-browserify": "^0.5.1",
    "gulp-coffee": "^2.3.1",
    "gulp-concat": "^2.2.0",
    "gulp-minify-css": "^0.3.0",
    "gulp-rename": "^1.2.0",
    "gulp-sass": "^1.3.3",
    "gulp-util": "^2.2.14"
  }
}