add prettier support for js,css,markdown fixes #234

src/fileUtils.js

@@ -1,6 +1,15 @@
 import { deferred } from './deferred';
 const esprima = require('esprima');
 
+/**
+ * Returns the extension from the file name.
+ * @param {dtring} fileName File name
+ */
+export function getExtensionFromFileName(fileName) {
+	const type = fileName.match(/\.(\w+)$/);
+	return type ? type[1] : '';
+}
+
 /**
  * Returns a linear file list from a nested file strcuture.
  * It excludes the folders from the returned list.