style(helpers): lint error free

Author: Kamil Kisiela

src/helpers/index.js

@@ -1,5 +1,12 @@
 import angular from 'angular';
 
+/**
+ * Sets attribute with optional value.
+ * Does not owerwrite.
+ * @param {Array} nodes nodes
+ * @param {String} attr  attribute name
+ * @param {String} val   atrtibute value
+ */
 function addIfNotPresent(nodes, attr, val) {
   angular.forEach(nodes, (node) => {
     if (!node.getAttribute(attr)) {
@@ -8,18 +15,32 @@ function addIfNotPresent(nodes, attr, val) {
   });
 }
 
+/**
+ * Gets all ngModels from node
+ */
 function getNgModelNodes(node) {
-  const query = "[ng-model], [data-ng-model]";
+  const query = '[ng-model], [data-ng-model]';
 
-  return node.querySelectorAll(query)
+  return node.querySelectorAll(query);
 }
 
+/**
+ * Adds attribute with optional value to all elements using ngModel directive.
+ * Handles extras.skipNgModelAttrsManipulator
+ * And does not overwrite attriutes
+ *
+ * @param  {String} template  Template provided by formly template manipulator
+ * @param  {Object} options   Options provided by formly template manipulator
+ * @param  {String} attrName  Attribute's name
+ * @param  {String|undefined} Attribute's value (optional)
+ * @return {String} result
+ */
 export function ngModelAttrsManipulator(template, options, attrName, attrValue) {
   const node = document.createElement('div');
   const skip = options.extras && options.extras.skipNgModelAttrsManipulator;
 
   if (skip === true) {
-    return template
+    return template;
   }
   node.innerHTML = template;
   const modelNodes = getNgModelNodes(node);