adds watch for js files

bin/watch-js.js

@@ -0,0 +1,44 @@
+const fse = require("fs-extra");
+const chokidar = require('chokidar');
+const src = 'app/resources/js/';
+const dest = 'public/resources/js/';
+
+// using cwd option so instead of path we get filename
+const watcher = chokidar.watch('.', {
+	ignored: /(^|[\/\\])\../, // ignore dotfiles
+	persistent: true,
+	cwd: src
+});
+
+// Something to use when events are received.
+const log = console.log.bind(console);
+// Add event listeners.
+watcher
+  .on('add', path => {
+	  log(`File ${path} has been added`);
+	  copyFile(src + path, dest + path);
+  })
+  .on('change', path => {
+	  log(`File ${path} has been changed`);
+	  copyFile(src + path, dest + path);
+  })
+  .on('unlink', path => {
+	  log(`File ${path} has been removed`);
+	  fse.unlink(dest + path);
+  });
+
+function copyFile(source, destination) {
+	fse.pathExists(source, (err, exists) => {
+		//console.log(err);
+
+		if (exists) {
+			fse.copy(source, destination, function (err) {
+				if (err){
+					console.log('An error occured while copying the folder.')
+					return console.error(err)
+				}
+				console.log(source, ' copy completed!')
+			});
+		}
+	});
+}