NW.js (node-webkit) Gulp pipeline with auto-reload

gulpfile.js

/* Based on https://gist.github.com/spelufo/10872517 */

var gulp = require('gulp');
var child = require('child_process');
var childProcesses = {};

var jade = require("gulp-jade");

/* CoffeeScript compile deps */
var gutil = require('gulp-util');
var concat = require('gulp-concat');
var rename = require('gulp-rename');
var coffee = require('gulp-coffee');
var cache = require('gulp-cached');
var remember = require('gulp-remember');
var plumber = require('gulp-plumber');
 
//////////////////////////////////////////////////////////////// node-webkit
 
function startNodeWebkit () {
 
  if (childProcesses['node-webkit']) childProcesses['node-webkit'].kill();
 
  var nwProcess = childProcesses['node-webkit'] = child.spawn('./nw', ['.']);
 
  nwProcess.stderr.on('data', function (data) {
    var log = data.toString().match(/\[.*\]\s+(.*), source:.*\/(.*)/);
    if (log) process.stdout.write('[node] '+log.slice(1).join(' ')+'\n');
  });
 
}
 
gulp.task('node-webkit', startNodeWebkit);
 
// Press [ENTER] to manually restart nw.
process.stdin.on('data', function (data) {
  if (data.toString() === '\n') startNodeWebkit();
});

//////////////////////////////////////////////////////////////// coffeescript

gulp.task("coffee", function() {
	return gulp.src("./lib/**/*.coffee", {base: "./lib"})
		.pipe(plumber())
		.pipe(cache("coffee"))
		.pipe(coffee({bare: true}).on('error', gutil.log)).on('data', gutil.log)
		.pipe(remember("coffee"))
		.pipe(gulp.dest("./app/assets/js"))
});

/* For template utils and such. */

gulp.task("coffee2", function() {
	return gulp.src("./*.coffee", {base: "."})
		.pipe(plumber())
		.pipe(cache("coffee"))
		.pipe(coffee({bare: true}).on('error', gutil.log)).on('data', gutil.log)
		.pipe(remember("coffee"))
		.pipe(gulp.dest("."))
});

//////////////////////////////////////////////////////////////// jade

gulp.task("jade", function() {
	return gulp.src("./**/*.jade", {base: "."})
		.pipe(plumber())
		.pipe(cache("jade"))
		.pipe(jade({locals: require("./templateUtil")}))
		.pipe(remember("jade"))
		.pipe(gulp.dest("."))
});
 
//////////////////////////////////////////////////////////////// reload
 
var reload;
 
require('net').createServer(function(socket) {
  reload = socket;
}).listen(9292);
 
gulp.task('reload', function () {
  reload.write('reload');
});
 
//////////////////////////////////////////////////////////////// start
 
gulp.task('watch', function () {
  gulp.watch(['app/assets/css/*.css'], ['reload']);
  gulp.watch(['./lib/**/*.coffee'], ['coffee']);
  gulp.watch(['./*.coffee'], ['coffee2']);
  gulp.watch(['./**/*.jade'], ['jade']);
  gulp.watch(['app/assets/js/**/*.js', './**/*.html', 'package.json'], ['reload']);
});
 
gulp.task('default', ['coffee', 'coffee2', 'jade', 'node-webkit', 'watch']);
 
 
//////////////////////////////////////////////////////////////// finish
 
process.on('exit', function () {
  for (var c in childProcesses) childProcesses[c].kill();
});

instructions.md

Download this ZIP, extract it somewhere that is accessible to your NW.js application, and fix any require paths to point at the correct path (relative to the root of the NW.js application, usually).