Simple directory watch and handlebar template precompile.

handlebar-dir-precompile.js

// DEPENDENCIES
var path = require('path'),
	fs = require('fs'),
	watch = require('watch'),
	Handlebars = require('handlebars'),
	glob = require("glob"),
	_ = require('underscore');

// MAIN VARS
var exts = [ ".hbs" ],
	src = "views",
	dest = "public/js/templates.js";

// PRECOMPILE
function do_precompile() {
	var fstream = fs.createWriteStream(dest, { flags: 'w' });
	fstream.write("(function() {\n\tvar template = Handlebars.template, templates = Handlebars.templates = Handlebars.templates || {};\n\tHandlebars.partials = Handlebars.templates;\n\n");

	glob(src + "/**", function (err, files) {
		if (err) throw err;
		_.each(files, function(file) {
			var ext = path.extname(file);

			if (_.contains(exts, ext)) {
				var id = file.replace(src + "/", "").replace(ext, ""),
					template = fs.readFileSync(file).toString();
				
				fstream.write("\ttemplates['" + id + "'] = template(" + Handlebars.precompile(template) + ");\n\n");
			}
		});

		fstream.end("})();");
	});
}

// WATCH
watch.watchTree(src, function(file) {
	if (_.isString(file) && _.contains(exts, path.extname(file))) {
		if (nconf.get("NODE_ENV") === "development") console.log("Handlebar file '"+file+"' changed.");
		do_precompile();
	}
});

// RUN
do_precompile();