Script that watches Jade files and compiles all of them to a single javascript file.

watch_jade.js

#!/usr/bin/env node
/**
 * dependencies:
 *    clientjade (sudo npm install -g clientjade)
 *    chokidar (sudo npm install chokidar)
 * how to run:
 *    node watch_jade.js
 * to render template, just call:
 *    jade.render(domNode, templateName, data);
 */

var fs = require('fs');
var chokidar = require('chokidar');
var exec = require('child_process').exec;

// input directory for all your client-side jade templates
var input = __dirname + '/templates';
// output all compiled jade templates to single javascript file
var output = __dirname + '/public/tpl/compiled.js';

console.log('Cleaning compiled.js');
exec('cat /dev/null > ' + output);

console.log('\nStarting watcher...');

var watcher = chokidar.watch(input, {persistent: true});

var paths = {};

var compile_files = function(path, msg) {
  var paths_str = Object.keys(paths).join(' ');
  if(!paths_str.length) return;
  process.nextTick(function() {
    exec('clientjade -c ' + paths_str + ' > ' + output);
    console.log(msg + path);
  });
};

watcher.on('add', function(path) {
  if(path.search('.jade') !== -1) {
    paths[path] = 1;
    compile_files(path, 'File added: ');
  }
}).on('change', function(path) {
  if(path.search('.jade') !== -1) {
    paths[path] = 1;
    compile_files(path, 'File change: ');
  }
}).on('unlink', function(path) {
  if(path.search('.jade') !== -1) {
    delete paths[path];
    compile_files(path, 'File removed: ');
  }
});

console.log('Started!');