Gulpfile.js

/**
 * Gulpfile
 *
 * This Node script is executed when you run `gulp` or `sails lift`.
 * It's purpose is to load the Gulp tasks in your project's `tasks`
 * folder, and allow you to add and remove tasks as you see fit.
 * For more information on how this works, check out the `README.md`
 * file that was generated in your `tasks` folder. Module gulp-load-plugins is now needed.
 *
 * WARNING:
 * Unless you know what you're doing, you shouldn't change this file.
 * Check out the `tasks` directory instead.
 */
var gulp = require('gulp'),
	plugins = require('gulp-load-plugins')({
						pattern: ['gulp-*', 'merge-*', 'run-*', 'main-*'], // the glob to search for
						replaceString: /\bgulp[\-.]|run[\-.]|merge[\-.]|main[\-.]/, // what to remove from the name of the module when adding it to the context
                        			camelizePluginName: true, // if true, transforms hyphenated plugins names to camel case
						lazy: true // whether the plugins should be lazy loaded on demand
					}),
	path = require('path'),
	growl = false;

//module.exports = function(gulp) {


	// Load the include-all library in order to require all of our grunt
	// configurations and task registrations dynamically.
	var includeAll;
	try {
		includeAll = require('include-all');
	} catch (e0) {
		try {
			includeAll = require('sails/node_modules/include-all');
		}
		catch(e1) {
			console.error('Could not find `include-all` module.');
			console.error('Skipping grunt tasks...');
			console.error('To fix this, please run:');
			console.error('npm install include-all --save`');
			console.error();

			gulp.task('default', []);
			return;
		}
	}


	/**
	 * Loads Gulp configuration modules from the specified
	 * relative path. These modules should export a function
	 * that, when run, should either load/configure or register
	 * a Gulp task.
	 */
	function loadTasks(relPath) {
		return includeAll({
			dirname: require('path').resolve(__dirname, relPath),
			filter: /(.+)\.js$/
		}) || {};
	}

	/**
	 * Invokes the function from a Grunt configuration module with
	 * a single argument - the `grunt` object.
	 */
	function invokeConfigFn(tasks) {
		for (var taskName in tasks) {
			if (tasks.hasOwnProperty(taskName)) {
				tasks[taskName](gulp, plugins, growl, path);
			}
		}
	}




	// Load task functions
	var taskConfigurations = loadTasks('./tasks-gulp/config'),
		registerDefinitions = loadTasks('./tasks-gulp/register');

	// (ensure that a default task exists)
	if (!registerDefinitions.default) {
		registerDefinitions.default = function (gulp) { gulp.task('default', []); };
	}

	// Run task functions to configure Gulp.
	invokeConfigFn(taskConfigurations);
	invokeConfigFn(registerDefinitions);

//};

output.txt

/path/to/project/folder/subfolder/tasks-gulp/config/watch.js:27
					server.changed(file.path);
					       ^

TypeError: server.changed is not a function
  at EventEmitter.<anonymous> (/Users/pjlamb12/projects/System/portal.service/tasks-gulp/config/watch.js:27:13)
  at emitOne (events.js:90:13)
  at EventEmitter.emit (events.js:182:7)
  at Gaze.<anonymous> (/Users/pjlamb12/projects/System/portal.service/node_modules/glob-watcher/index.js:17:11)
  at emitTwo (events.js:100:13)
  at Gaze.emit (events.js:185:7)
  at Gaze.emit (/Users/pjlamb12/projects/System/portal.service/node_modules/glob-watcher/node_modules/gaze/lib/gaze.js:129:32)
  at /Users/pjlamb12/projects/System/portal.service/node_modules/glob-watcher/node_modules/gaze/lib/gaze.js:415:16
  at StatWatcher._pollers.(anonymous function) (/Users/pjlamb12/projects/System/portal.service/node_modules/glob-watcher/node_modules/gaze/lib/gaze.js:326:7)
  at emitTwo (events.js:100:13)
  at StatWatcher.emit (events.js:185:7)
  at StatWatcher._handle.onchange (fs.js:1369:10)

watch.js

/**
 * Run predefined tasks whenever watched file patterns are added, changed or deleted.
 *
 * ---------------------------------------------------------------
 *
 * Watch for changes on
 * - files in the `assets` folder
 * - the `tasks/pipeline.js` file
 * and re-run the appropriate tasks.
 *
 *
 */
module.exports = function(gulp, plugins, growl) {
	var server = plugins.livereload();
	gulp.task('watch:api', function() {
		// Watch Style files
		return gulp.watch('api/**/*', ['syncAssets'])
				.on('change', function(file) {
					server.changed(file.path);
				});
	});
	
	gulp.task('watch:assets', function() {
		// Watch assets
		return gulp.watch(['assets/**/*', 'tasks/pipeline.js'], ['syncAssets'])
				.on('change', function(file) {
					server.changed(file.path);
				});
	});

};