From ff61caacb78da139b3a1b199df2c4b40cd55a3cc Mon Sep 17 00:00:00 2001
From: Martti Laine <martti@codeclown.net>
Date: Sat, 7 Apr 2018 13:40:21 +0200
Subject: [PATCH] Slight refactor/namings/comment on mergeConfig

---
 lib/core/mergeConfig.js | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/lib/core/mergeConfig.js b/lib/core/mergeConfig.js
index e8782ab..ad7d0f8 100644
--- a/lib/core/mergeConfig.js
+++ b/lib/core/mergeConfig.js
@@ -4,7 +4,7 @@ var utils = require('../utils');
 
 /**
  * Config-specific merge-function which creates a new config-object
- * based on given defaults and instance config.
+ * by merging two configuration objects together.
  *
  * @param {Object} config1
  * @param {Object} config2
@@ -15,13 +15,11 @@ module.exports = function mergeConfig(config1, config2) {
   config2 = config2 || {};
   var config = {};
 
-  utils.forEach(['url', 'method', 'params', 'data'], function valueFromInstanceConfig(prop) {
-    if (typeof config2[prop] !== 'undefined') {
-      config[prop] = config2[prop];
-    }
+  utils.forEach(['url', 'method', 'params', 'data'], function valueFromConfig2(prop) {
+    config[prop] = config2[prop];
   });
 
-  utils.forEach(['headers', 'auth', 'proxy'], function mergeInstanceConfigWithDefaults(prop) {
+  utils.forEach(['headers', 'auth', 'proxy'], function mergeValues(prop) {
     if (typeof config2[prop] !== 'undefined') {
       if (typeof config2[prop] === 'object') {
         config[prop] = utils.deepMerge(config1[prop], config2[prop]);
@@ -38,7 +36,7 @@ module.exports = function mergeConfig(config1, config2) {
     'timeout', 'withCredentials', 'adapter', 'responseType', 'xsrfCookieName',
     'xsrfHeaderName', 'onUploadProgress', 'onDownloadProgress', 'maxContentLength',
     'validateStatus', 'maxRedirects', 'httpAgent', 'httpsAgent', 'cancelToken'
-  ], function defaultToInstanceConfig(prop) {
+  ], function defaultToConfig2(prop) {
     config[prop] = typeof config2[prop] === 'undefined' ? config1[prop] : config2[prop];
   });