yay grunt watch finally works!

Gruntfile.js

@@ -1,52 +1,5 @@
 module.exports = function(grunt) {
 	grunt.initConfig({
-		pkg: grunt.file.readJSON('package.json'),
-		express: {
-			dev: {
-				options: {
-					script: 'app.js',
-					node_env: 'development',
-					args: ['--log-level=info'],
-					output: 'NodeBB Ready',
-					interrupt: true,
-					spawn: false,
-					interval: 100
-				}
-			},
-			serverUpdated: {
-				options: {
-					script: 'app.js',
-					node_env: 'development',
-					args: ['--from-file=less,js', '--log-level=info'],
-					output: 'NodeBB Ready',
-					interrupt: true,
-					spawn: false,
-					interval: 100
-				}
-			},
-			clientUpdated: {
-				options: {
-					script: 'app.js',
-					node_env: 'development',
-					args: ['--from-file=less', '--log-level=info'],
-					output: 'NodeBB Ready',
-					interrupt: true,
-					spawn: false,
-					interval: 100
-				}
-			},
-			lessUpdated: {
-				options: {
-					script: 'app.js',
-					node_env: 'development',
-					args: ['--from-file=js', '--log-level=info'],
-					output: 'NodeBB Ready',
-					interrupt: true,
-					spawn: false,
-					interval: 100
-				}
-			}
-		},
 		less: {
 			development: {
 				files: {
@@ -57,21 +10,52 @@ module.exports = function(grunt) {
 		watch: {
 			lessUpdated: {
 				files: 'public/**/*.less',
-				tasks: ['express:lessUpdated']
+				/*tasks: ['express:lessUpdated']*/
 			},
 			clientUpdated: {
 				files: 'public/src/**/*.js',
-				tasks: ['express:clientUpdated']
+				/*tasks: ['express:clientUpdated']*/
 			},
 			serverUpdated: {
 				files: ['*.js', 'src/**/*.js'],
-				tasks: ['express:serverUpdated']
+				/*tasks: ['express:serverUpdated']*/
 			}
 		}
 	});
 
 	grunt.loadNpmTasks('grunt-contrib-watch');
-	grunt.loadNpmTasks('grunt-express-server');
 
-	grunt.registerTask('default', ['express:dev', 'watch']);
+	grunt.registerTask('default', ['watch']);
+
+	var fork = require('child_process').fork,
+		env = process.env;
+
+	process.env.NODE_ENV = 'development'
+
+	var worker = fork('app.js', ['--log-level=info'], {
+		env: env,
+		silent: true
+	});
+
+
+	grunt.event.on('watch', function(action, filepath, target) {
+		var args = [];
+		
+		if (target === 'lessUpdated') {
+			args.push('--from-file=js');
+		} else if (target === 'clientUpdated') {
+			args.push('--from-file=less');
+		} else if (target === 'serverUpdated') {
+			args.push('--from-file=less,js');
+		}
+
+		args.push('--log-level=info');
+
+		worker.kill();
+		worker = fork('app.js', args, {
+			env: env,
+			silent: true
+		});
+	});
+
 };