Use Object.assign() instead of writing own merge function

js/components/ascribe_forms/form.js

@@ -12,8 +12,6 @@ import GlobalNotificationActions from '../../actions/global_notification_actions
 import requests from '../../utils/requests';
 
 import { getLangText } from '../../utils/lang_utils';
-import { mergeOptionsWithDuplicates } from '../../utils/general_utils';
-
 
 let Form = React.createClass({
     propTypes: {
@@ -129,7 +127,7 @@ let Form = React.createClass({
         }
 
         if (typeof this.props.getFormData === 'function') {
-            data = mergeOptionsWithDuplicates(data, this.props.getFormData());
+            data = Object.assign(data, this.props.getFormData());
         }
 
         return data;

js/utils/general_utils.js

@@ -76,8 +76,8 @@ export function formatText() {
     });
 }
 
-/*
+/**
-    Checks a list of objects for key duplicates and returns a boolean
+ * Checks a list of objects for key duplicates and returns a boolean
  */
 function _doesObjectListHaveDuplicates(l) {
     let mergedList = [];
@@ -115,35 +115,7 @@ export function mergeOptions(...l) {
         throw new Error('The objects you submitted for merging have duplicates. Merge aborted.');
     }
 
-    let newObj = {};
+    return Object.assign({}, ...l);
-
-    for(let i = 1; i < l.length; i++) {
-        newObj = _mergeOptions(newObj, _mergeOptions(l[i - 1], l[i]));
-    }
-
-    return newObj;
-}
-
-/**
- * Merges a number of objects even if there're having duplicates.
- *
- * DOES NOT RETURN AN ERROR!
- *
- * Takes a list of object and merges their keys to one object.
- * Uses mergeOptions for two objects.
- * @param  {[type]} l [description]
- * @return {[type]}   [description]
- */
-export function mergeOptionsWithDuplicates(...l) {
-    // If the objects submitted in the list have duplicates,in their key names,
-    // abort the merge and tell the function's user to check his objects.
-    let newObj = {};
-
-    for(let i = 1; i < l.length; i++) {
-        newObj = _mergeOptions(newObj, _mergeOptions(l[i - 1], l[i]));
-    }
-
-    return newObj;
 }
 
 /**
@@ -159,25 +131,6 @@ export function update(a, ...l) {
     return a;
 }
 
-/**
- * Overwrites obj1's values with obj2's and adds obj2's if non existent in obj1
- * @param obj1
- * @param obj2
- * @returns obj3 a new object based on obj1 and obj2
- * Taken from: http://stackoverflow.com/a/171256/1263876
- */
-function _mergeOptions(obj1, obj2) {
-    let obj3 = {};
-    
-    for (let attrname in obj1) {
-        obj3[attrname] = obj1[attrname];
-    }
-    for (let attrname in obj2) {
-        obj3[attrname] = obj2[attrname];
-    }
-    return obj3;
-}
-
 /**
  * Escape HTML in a string so it can be injected safely using
  * React's `dangerouslySetInnerHTML`

js/utils/requests.js

@@ -9,17 +9,6 @@ import { excludePropFromObject } from '../utils/general_utils';
 import { argsToQueryParams } from '../utils/url_utils';
 
 class Requests {
-    _merge(defaults, options) {
-        let merged = {};
-        for (let key in defaults) {
-            merged[key] = defaults[key];
-        }
-        for (let key in options) {
-            merged[key] = options[key];
-        }
-        return merged;
-    }
-
     unpackResponse(response) {
         if (response.status >= 500) {
             throw new Error(response.status + ' - ' + response.statusText + ' - on URL:' + response.url);
@@ -112,7 +101,7 @@ class Requests {
 
     request(verb, url, options) {
         options = options || {};
-        let merged = this._merge(this.httpOptions, options);
+        let merged = Object.assign({}, this.httpOptions, options);
         let csrftoken = getCookie(AppConstants.csrftoken);
         if (csrftoken) {
             merged.headers['X-CSRFToken'] = csrftoken;
@@ -127,20 +116,20 @@ class Requests {
         if (url === undefined) {
             throw new Error('Url undefined');
         }
-        let paramsCopy = this._merge(params);
+        let paramsCopy = Object.assign({}, params);
         let newUrl = this.prepareUrl(url, paramsCopy, true);
         return this.request('get', newUrl);
     }
 
     delete(url, params) {
-        let paramsCopy = this._merge(params);
+        let paramsCopy = Object.assign({}, params);
         let newUrl = this.prepareUrl(url, paramsCopy, true);
         return this.request('delete', newUrl);
     }
 
-    _putOrPost(url, paramsAndBody, method){
-        let paramsCopy = this._merge(paramsAndBody);
         let params = excludePropFromObject(paramsAndBody, ['body']);
+    _putOrPost(url, paramsAndBody, method) {
+        let paramsCopy = Object.assign({}, paramsAndBody);
         let newUrl = this.prepareUrl(url, params);
         let body = null;
         if (paramsCopy && paramsCopy.body) {