From 097948698a057235140cc275504c12d5d20281b8 Mon Sep 17 00:00:00 2001
From: Felipe Martins <felipewmartins@gmail.com>
Date: Fri, 25 Oct 2019 11:34:47 -0300
Subject: [PATCH] Revert "Update Webpack + deps, remove now unnecessary
 polyfills" (#2479)

* Revert "Update Webpack + deps, remove now unnecessary polyfills (#2410)"

This reverts commit 189b34c45ababa279243d419c60a06ef3c1ab258.

* Fix build (#2496)

* Change syntax to see if build passes

* Test commit

* Test with node 10

* Test adding all browsers in travis

* remove other browsers when running on travis
---
 bower.json                    |  1 +
 lib/core/enhanceError.js      |  2 +-
 lib/helpers/buildURL.js       |  2 +-
 lib/helpers/parseHeaders.js   |  4 ++--
 lib/utils.js                  | 40 ++++++++++++++++++++++++-------
 package.json                  | 32 +++++++++++++------------
 test/manual/basic.html        |  3 ++-
 test/manual/cors.html         |  3 ++-
 test/manual/promise.js        |  9 +++++++
 test/specs/__helpers.js       |  3 +++
 test/specs/utils/isX.spec.js  |  5 ++++
 test/specs/utils/trim.spec.js | 12 ++++++++++
 webpack.config.js             | 44 +++++++++++++++++++++--------------
 13 files changed, 113 insertions(+), 47 deletions(-)
 create mode 100644 test/manual/promise.js
 create mode 100644 test/specs/utils/trim.spec.js

diff --git a/bower.json b/bower.json
index 9a5b8cb4c2..2496c03ef2 100644
--- a/bower.json
+++ b/bower.json
@@ -21,6 +21,7 @@
   "license": "MIT",
   "ignore": [
     "**/.*",
+    "*.iml",
     "examples",
     "lib",
     "node_modules",
diff --git a/lib/core/enhanceError.js b/lib/core/enhanceError.js
index b6bc4444e1..02fbbd6a99 100644
--- a/lib/core/enhanceError.js
+++ b/lib/core/enhanceError.js
@@ -20,7 +20,7 @@ module.exports = function enhanceError(error, config, code, request, response) {
   error.response = response;
   error.isAxiosError = true;
 
-  error.toJSON = function toJSON() {
+  error.toJSON = function() {
     return {
       // Standard
       message: this.message,
diff --git a/lib/helpers/buildURL.js b/lib/helpers/buildURL.js
index 7a7d7a6199..8c40e4096a 100644
--- a/lib/helpers/buildURL.js
+++ b/lib/helpers/buildURL.js
@@ -39,7 +39,7 @@ module.exports = function buildURL(url, params, paramsSerializer) {
         return;
       }
 
-      if (Array.isArray(val)) {
+      if (utils.isArray(val)) {
         key = key + '[]';
       } else {
         val = [val];
diff --git a/lib/helpers/parseHeaders.js b/lib/helpers/parseHeaders.js
index 5747a1bd7a..8af2cc7f1b 100644
--- a/lib/helpers/parseHeaders.js
+++ b/lib/helpers/parseHeaders.js
@@ -34,8 +34,8 @@ module.exports = function parseHeaders(headers) {
 
   utils.forEach(headers.split('\n'), function parser(line) {
     i = line.indexOf(':');
-    key = line.substr(0, i).trim().toLowerCase();
-    val = line.substr(i + 1).trim();
+    key = utils.trim(line.substr(0, i)).toLowerCase();
+    val = utils.trim(line.substr(i + 1));
 
     if (key) {
       if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) {
diff --git a/lib/utils.js b/lib/utils.js
index 2726490f14..8946055dac 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -3,9 +3,21 @@
 var bind = require('./helpers/bind');
 var isBuffer = require('is-buffer');
 
+/*global toString:true*/
+
 // utils is a library of generic helper functions non-specific to axios
 
-var _toString = Object.prototype.toString;
+var toString = Object.prototype.toString;
+
+/**
+ * Determine if a value is an Array
+ *
+ * @param {Object} val The value to test
+ * @returns {boolean} True if value is an Array, otherwise false
+ */
+function isArray(val) {
+  return toString.call(val) === '[object Array]';
+}
 
 /**
  * Determine if a value is an ArrayBuffer
@@ -14,7 +26,7 @@ var _toString = Object.prototype.toString;
  * @returns {boolean} True if value is an ArrayBuffer, otherwise false
  */
 function isArrayBuffer(val) {
-  return _toString.call(val) === '[object ArrayBuffer]';
+  return toString.call(val) === '[object ArrayBuffer]';
 }
 
 /**
@@ -90,7 +102,7 @@ function isObject(val) {
  * @returns {boolean} True if value is a Date, otherwise false
  */
 function isDate(val) {
-  return _toString.call(val) === '[object Date]';
+  return toString.call(val) === '[object Date]';
 }
 
 /**
@@ -100,7 +112,7 @@ function isDate(val) {
  * @returns {boolean} True if value is a File, otherwise false
  */
 function isFile(val) {
-  return _toString.call(val) === '[object File]';
+  return toString.call(val) === '[object File]';
 }
 
 /**
@@ -110,7 +122,7 @@ function isFile(val) {
  * @returns {boolean} True if value is a Blob, otherwise false
  */
 function isBlob(val) {
-  return _toString.call(val) === '[object Blob]';
+  return toString.call(val) === '[object Blob]';
 }
 
 /**
@@ -120,7 +132,7 @@ function isBlob(val) {
  * @returns {boolean} True if value is a Function, otherwise false
  */
 function isFunction(val) {
-  return _toString.call(val) === '[object Function]';
+  return toString.call(val) === '[object Function]';
 }
 
 /**
@@ -143,6 +155,16 @@ function isURLSearchParams(val) {
   return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams;
 }
 
+/**
+ * Trim excess whitespace off the beginning and end of a string
+ *
+ * @param {String} str The String to trim
+ * @returns {String} The String freed of excess whitespace
+ */
+function trim(str) {
+  return str.replace(/^\s*/, '').replace(/\s*$/, '');
+}
+
 /**
  * Determine if we're running in a standard browser environment
  *
@@ -194,7 +216,7 @@ function forEach(obj, fn) {
     obj = [obj];
   }
 
-  if (Array.isArray(obj)) {
+  if (isArray(obj)) {
     // Iterate over array values
     for (var i = 0, l = obj.length; i < l; i++) {
       fn.call(null, obj[i], i, obj);
@@ -288,6 +310,7 @@ function extend(a, b, thisArg) {
 }
 
 module.exports = {
+  isArray: isArray,
   isArrayBuffer: isArrayBuffer,
   isBuffer: isBuffer,
   isFormData: isFormData,
@@ -306,5 +329,6 @@ module.exports = {
   forEach: forEach,
   merge: merge,
   deepMerge: deepMerge,
-  extend: extend
+  extend: extend,
+  trim: trim
 };
diff --git a/package.json b/package.json
index 42b60b53d3..4905921b89 100644
--- a/package.json
+++ b/package.json
@@ -34,37 +34,39 @@
   "devDependencies": {
     "bundlesize": "^0.17.0",
     "coveralls": "^3.0.0",
+    "es6-promise": "^4.2.4",
     "grunt": "^1.0.2",
     "grunt-banner": "^0.6.0",
     "grunt-cli": "^1.2.0",
-    "grunt-contrib-clean": "^2.0.0",
+    "grunt-contrib-clean": "^1.1.0",
     "grunt-contrib-watch": "^1.0.0",
-    "grunt-eslint": "^22.0.0",
-    "grunt-karma": "^3.0.2",
+    "grunt-eslint": "^20.1.0",
+    "grunt-karma": "^2.0.0",
     "grunt-mocha-test": "^0.13.3",
     "grunt-ts": "^6.0.0-beta.19",
-    "grunt-webpack": "^3.1.3",
-    "istanbul-instrumenter-loader": "^3.0.1",
+    "grunt-webpack": "^1.0.18",
+    "istanbul-instrumenter-loader": "^1.0.0",
     "jasmine-core": "^2.4.1",
-    "karma": "^4.3.0",
-    "karma-chrome-launcher": "^3.1.0",
-    "karma-coverage": "^2.0.1",
+    "karma": "^1.3.0",
+    "karma-chrome-launcher": "^2.2.0",
+    "karma-coverage": "^1.1.1",
     "karma-firefox-launcher": "^1.1.0",
-    "karma-jasmine": "^2.0.1",
+    "karma-jasmine": "^1.1.1",
     "karma-jasmine-ajax": "^0.1.13",
     "karma-opera-launcher": "^1.0.0",
     "karma-safari-launcher": "^1.0.0",
-    "karma-sauce-launcher": "^2.0.2",
+    "karma-sauce-launcher": "^1.2.0",
     "karma-sinon": "^1.0.5",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^4.0.2",
-    "load-grunt-tasks": "^5.1.0",
+    "karma-webpack": "^1.7.0",
+    "load-grunt-tasks": "^3.5.2",
     "minimist": "^1.2.0",
-    "mocha": "^6.2.0",
-    "sinon": "^7.4.2",
+    "mocha": "^5.2.0",
+    "sinon": "^4.5.0",
     "typescript": "^2.8.1",
     "url-search-params": "^0.10.0",
-    "webpack": "^4.40.2"
+    "webpack": "^1.13.1",
+    "webpack-dev-server": "^1.14.1"
   },
   "browser": {
     "./lib/adapters/http.js": "./lib/adapters/xhr.js"
diff --git a/test/manual/basic.html b/test/manual/basic.html
index bf4845b0e9..35fa6490d8 100644
--- a/test/manual/basic.html
+++ b/test/manual/basic.html
@@ -7,6 +7,7 @@
 
 An alert should be shown with the <code>{"name":"axios"}</code>
 
+<script src="promise.js"></script>
 <script src="../../dist/axios.js"></script>
 <script>
     axios.get('./fixture.json').then(function(response) {
@@ -17,4 +18,4 @@
 </script>
 
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/test/manual/cors.html b/test/manual/cors.html
index 5d94486645..da6e946fee 100644
--- a/test/manual/cors.html
+++ b/test/manual/cors.html
@@ -7,6 +7,7 @@
 
 An alert should be shown with <code>{"status":"ok"}</code>
 
+<script src="promise.js"></script>
 <script src="../../dist/axios.js"></script>
 <script>
     axios.get('http://cors-test.appspot.com/test').then(function(response) {
@@ -16,4 +17,4 @@
 </script>
 
 </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/test/manual/promise.js b/test/manual/promise.js
new file mode 100644
index 0000000000..2d48351584
--- /dev/null
+++ b/test/manual/promise.js
@@ -0,0 +1,9 @@
+/*!
+ * @overview es6-promise - a tiny implementation of Promises/A+.
+ * @copyright Copyright (c) 2014 Yehuda Katz, Tom Dale, Stefan Penner and contributors (Conversion to ES6 API by Jake Archibald)
+ * @license   Licensed under MIT license
+ *            See https://raw.githubusercontent.com/jakearchibald/es6-promise/master/LICENSE
+ * @version   3.0.2
+ */
+
+(function(){"use strict";function lib$es6$promise$utils$$objectOrFunction(x){return typeof x==="function"||typeof x==="object"&&x!==null}function lib$es6$promise$utils$$isFunction(x){return typeof x==="function"}function lib$es6$promise$utils$$isMaybeThenable(x){return typeof x==="object"&&x!==null}var lib$es6$promise$utils$$_isArray;if(!Array.isArray){lib$es6$promise$utils$$_isArray=function(x){return Object.prototype.toString.call(x)==="[object Array]"}}else{lib$es6$promise$utils$$_isArray=Array.isArray}var lib$es6$promise$utils$$isArray=lib$es6$promise$utils$$_isArray;var lib$es6$promise$asap$$len=0;var lib$es6$promise$asap$$toString={}.toString;var lib$es6$promise$asap$$vertxNext;var lib$es6$promise$asap$$customSchedulerFn;var lib$es6$promise$asap$$asap=function asap(callback,arg){lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len]=callback;lib$es6$promise$asap$$queue[lib$es6$promise$asap$$len+1]=arg;lib$es6$promise$asap$$len+=2;if(lib$es6$promise$asap$$len===2){if(lib$es6$promise$asap$$customSchedulerFn){lib$es6$promise$asap$$customSchedulerFn(lib$es6$promise$asap$$flush)}else{lib$es6$promise$asap$$scheduleFlush()}}};function lib$es6$promise$asap$$setScheduler(scheduleFn){lib$es6$promise$asap$$customSchedulerFn=scheduleFn}function lib$es6$promise$asap$$setAsap(asapFn){lib$es6$promise$asap$$asap=asapFn}var lib$es6$promise$asap$$browserWindow=typeof window!=="undefined"?window:undefined;var lib$es6$promise$asap$$browserGlobal=lib$es6$promise$asap$$browserWindow||{};var lib$es6$promise$asap$$BrowserMutationObserver=lib$es6$promise$asap$$browserGlobal.MutationObserver||lib$es6$promise$asap$$browserGlobal.WebKitMutationObserver;var lib$es6$promise$asap$$isNode=typeof process!=="undefined"&&{}.toString.call(process)==="[object process]";var lib$es6$promise$asap$$isWorker=typeof Uint8ClampedArray!=="undefined"&&typeof importScripts!=="undefined"&&typeof MessageChannel!=="undefined";function lib$es6$promise$asap$$useNextTick(){return function(){process.nextTick(lib$es6$promise$asap$$flush)}}function lib$es6$promise$asap$$useVertxTimer(){return function(){lib$es6$promise$asap$$vertxNext(lib$es6$promise$asap$$flush)}}function lib$es6$promise$asap$$useMutationObserver(){var iterations=0;var observer=new lib$es6$promise$asap$$BrowserMutationObserver(lib$es6$promise$asap$$flush);var node=document.createTextNode("");observer.observe(node,{characterData:true});return function(){node.data=iterations=++iterations%2}}function lib$es6$promise$asap$$useMessageChannel(){var channel=new MessageChannel;channel.port1.onmessage=lib$es6$promise$asap$$flush;return function(){channel.port2.postMessage(0)}}function lib$es6$promise$asap$$useSetTimeout(){return function(){setTimeout(lib$es6$promise$asap$$flush,1)}}var lib$es6$promise$asap$$queue=new Array(1e3);function lib$es6$promise$asap$$flush(){for(var i=0;i<lib$es6$promise$asap$$len;i+=2){var callback=lib$es6$promise$asap$$queue[i];var arg=lib$es6$promise$asap$$queue[i+1];callback(arg);lib$es6$promise$asap$$queue[i]=undefined;lib$es6$promise$asap$$queue[i+1]=undefined}lib$es6$promise$asap$$len=0}function lib$es6$promise$asap$$attemptVertx(){try{var r=require;var vertx=r("vertx");lib$es6$promise$asap$$vertxNext=vertx.runOnLoop||vertx.runOnContext;return lib$es6$promise$asap$$useVertxTimer()}catch(e){return lib$es6$promise$asap$$useSetTimeout()}}var lib$es6$promise$asap$$scheduleFlush;if(lib$es6$promise$asap$$isNode){lib$es6$promise$asap$$scheduleFlush=lib$es6$promise$asap$$useNextTick()}else if(lib$es6$promise$asap$$BrowserMutationObserver){lib$es6$promise$asap$$scheduleFlush=lib$es6$promise$asap$$useMutationObserver()}else if(lib$es6$promise$asap$$isWorker){lib$es6$promise$asap$$scheduleFlush=lib$es6$promise$asap$$useMessageChannel()}else if(lib$es6$promise$asap$$browserWindow===undefined&&typeof require==="function"){lib$es6$promise$asap$$scheduleFlush=lib$es6$promise$asap$$attemptVertx()}else{lib$es6$promise$asap$$scheduleFlush=lib$es6$promise$asap$$useSetTimeout()}function lib$es6$promise$$internal$$noop(){}var lib$es6$promise$$internal$$PENDING=void 0;var lib$es6$promise$$internal$$FULFILLED=1;var lib$es6$promise$$internal$$REJECTED=2;var lib$es6$promise$$internal$$GET_THEN_ERROR=new lib$es6$promise$$internal$$ErrorObject;function lib$es6$promise$$internal$$selfFulfillment(){return new TypeError("You cannot resolve a promise with itself")}function lib$es6$promise$$internal$$cannotReturnOwn(){return new TypeError("A promises callback cannot return that same promise.")}function lib$es6$promise$$internal$$getThen(promise){try{return promise.then}catch(error){lib$es6$promise$$internal$$GET_THEN_ERROR.error=error;return lib$es6$promise$$internal$$GET_THEN_ERROR}}function lib$es6$promise$$internal$$tryThen(then,value,fulfillmentHandler,rejectionHandler){try{then.call(value,fulfillmentHandler,rejectionHandler)}catch(e){return e}}function lib$es6$promise$$internal$$handleForeignThenable(promise,thenable,then){lib$es6$promise$asap$$asap(function(promise){var sealed=false;var error=lib$es6$promise$$internal$$tryThen(then,thenable,function(value){if(sealed){return}sealed=true;if(thenable!==value){lib$es6$promise$$internal$$resolve(promise,value)}else{lib$es6$promise$$internal$$fulfill(promise,value)}},function(reason){if(sealed){return}sealed=true;lib$es6$promise$$internal$$reject(promise,reason)},"Settle: "+(promise._label||" unknown promise"));if(!sealed&&error){sealed=true;lib$es6$promise$$internal$$reject(promise,error)}},promise)}function lib$es6$promise$$internal$$handleOwnThenable(promise,thenable){if(thenable._state===lib$es6$promise$$internal$$FULFILLED){lib$es6$promise$$internal$$fulfill(promise,thenable._result)}else if(thenable._state===lib$es6$promise$$internal$$REJECTED){lib$es6$promise$$internal$$reject(promise,thenable._result)}else{lib$es6$promise$$internal$$subscribe(thenable,undefined,function(value){lib$es6$promise$$internal$$resolve(promise,value)},function(reason){lib$es6$promise$$internal$$reject(promise,reason)})}}function lib$es6$promise$$internal$$handleMaybeThenable(promise,maybeThenable){if(maybeThenable.constructor===promise.constructor){lib$es6$promise$$internal$$handleOwnThenable(promise,maybeThenable)}else{var then=lib$es6$promise$$internal$$getThen(maybeThenable);if(then===lib$es6$promise$$internal$$GET_THEN_ERROR){lib$es6$promise$$internal$$reject(promise,lib$es6$promise$$internal$$GET_THEN_ERROR.error)}else if(then===undefined){lib$es6$promise$$internal$$fulfill(promise,maybeThenable)}else if(lib$es6$promise$utils$$isFunction(then)){lib$es6$promise$$internal$$handleForeignThenable(promise,maybeThenable,then)}else{lib$es6$promise$$internal$$fulfill(promise,maybeThenable)}}}function lib$es6$promise$$internal$$resolve(promise,value){if(promise===value){lib$es6$promise$$internal$$reject(promise,lib$es6$promise$$internal$$selfFulfillment())}else if(lib$es6$promise$utils$$objectOrFunction(value)){lib$es6$promise$$internal$$handleMaybeThenable(promise,value)}else{lib$es6$promise$$internal$$fulfill(promise,value)}}function lib$es6$promise$$internal$$publishRejection(promise){if(promise._onerror){promise._onerror(promise._result)}lib$es6$promise$$internal$$publish(promise)}function lib$es6$promise$$internal$$fulfill(promise,value){if(promise._state!==lib$es6$promise$$internal$$PENDING){return}promise._result=value;promise._state=lib$es6$promise$$internal$$FULFILLED;if(promise._subscribers.length!==0){lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish,promise)}}function lib$es6$promise$$internal$$reject(promise,reason){if(promise._state!==lib$es6$promise$$internal$$PENDING){return}promise._state=lib$es6$promise$$internal$$REJECTED;promise._result=reason;lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publishRejection,promise)}function lib$es6$promise$$internal$$subscribe(parent,child,onFulfillment,onRejection){var subscribers=parent._subscribers;var length=subscribers.length;parent._onerror=null;subscribers[length]=child;subscribers[length+lib$es6$promise$$internal$$FULFILLED]=onFulfillment;subscribers[length+lib$es6$promise$$internal$$REJECTED]=onRejection;if(length===0&&parent._state){lib$es6$promise$asap$$asap(lib$es6$promise$$internal$$publish,parent)}}function lib$es6$promise$$internal$$publish(promise){var subscribers=promise._subscribers;var settled=promise._state;if(subscribers.length===0){return}var child,callback,detail=promise._result;for(var i=0;i<subscribers.length;i+=3){child=subscribers[i];callback=subscribers[i+settled];if(child){lib$es6$promise$$internal$$invokeCallback(settled,child,callback,detail)}else{callback(detail)}}promise._subscribers.length=0}function lib$es6$promise$$internal$$ErrorObject(){this.error=null}var lib$es6$promise$$internal$$TRY_CATCH_ERROR=new lib$es6$promise$$internal$$ErrorObject;function lib$es6$promise$$internal$$tryCatch(callback,detail){try{return callback(detail)}catch(e){lib$es6$promise$$internal$$TRY_CATCH_ERROR.error=e;return lib$es6$promise$$internal$$TRY_CATCH_ERROR}}function lib$es6$promise$$internal$$invokeCallback(settled,promise,callback,detail){var hasCallback=lib$es6$promise$utils$$isFunction(callback),value,error,succeeded,failed;if(hasCallback){value=lib$es6$promise$$internal$$tryCatch(callback,detail);if(value===lib$es6$promise$$internal$$TRY_CATCH_ERROR){failed=true;error=value.error;value=null}else{succeeded=true}if(promise===value){lib$es6$promise$$internal$$reject(promise,lib$es6$promise$$internal$$cannotReturnOwn());return}}else{value=detail;succeeded=true}if(promise._state!==lib$es6$promise$$internal$$PENDING){}else if(hasCallback&&succeeded){lib$es6$promise$$internal$$resolve(promise,value)}else if(failed){lib$es6$promise$$internal$$reject(promise,error)}else if(settled===lib$es6$promise$$internal$$FULFILLED){lib$es6$promise$$internal$$fulfill(promise,value)}else if(settled===lib$es6$promise$$internal$$REJECTED){lib$es6$promise$$internal$$reject(promise,value)}}function lib$es6$promise$$internal$$initializePromise(promise,resolver){try{resolver(function resolvePromise(value){lib$es6$promise$$internal$$resolve(promise,value)},function rejectPromise(reason){lib$es6$promise$$internal$$reject(promise,reason)})}catch(e){lib$es6$promise$$internal$$reject(promise,e)}}function lib$es6$promise$enumerator$$Enumerator(Constructor,input){var enumerator=this;enumerator._instanceConstructor=Constructor;enumerator.promise=new Constructor(lib$es6$promise$$internal$$noop);if(enumerator._validateInput(input)){enumerator._input=input;enumerator.length=input.length;enumerator._remaining=input.length;enumerator._init();if(enumerator.length===0){lib$es6$promise$$internal$$fulfill(enumerator.promise,enumerator._result)}else{enumerator.length=enumerator.length||0;enumerator._enumerate();if(enumerator._remaining===0){lib$es6$promise$$internal$$fulfill(enumerator.promise,enumerator._result)}}}else{lib$es6$promise$$internal$$reject(enumerator.promise,enumerator._validationError())}}lib$es6$promise$enumerator$$Enumerator.prototype._validateInput=function(input){return lib$es6$promise$utils$$isArray(input)};lib$es6$promise$enumerator$$Enumerator.prototype._validationError=function(){return new Error("Array Methods must be provided an Array")};lib$es6$promise$enumerator$$Enumerator.prototype._init=function(){this._result=new Array(this.length)};var lib$es6$promise$enumerator$$default=lib$es6$promise$enumerator$$Enumerator;lib$es6$promise$enumerator$$Enumerator.prototype._enumerate=function(){var enumerator=this;var length=enumerator.length;var promise=enumerator.promise;var input=enumerator._input;for(var i=0;promise._state===lib$es6$promise$$internal$$PENDING&&i<length;i++){enumerator._eachEntry(input[i],i)}};lib$es6$promise$enumerator$$Enumerator.prototype._eachEntry=function(entry,i){var enumerator=this;var c=enumerator._instanceConstructor;if(lib$es6$promise$utils$$isMaybeThenable(entry)){if(entry.constructor===c&&entry._state!==lib$es6$promise$$internal$$PENDING){entry._onerror=null;enumerator._settledAt(entry._state,i,entry._result)}else{enumerator._willSettleAt(c.resolve(entry),i)}}else{enumerator._remaining--;enumerator._result[i]=entry}};lib$es6$promise$enumerator$$Enumerator.prototype._settledAt=function(state,i,value){var enumerator=this;var promise=enumerator.promise;if(promise._state===lib$es6$promise$$internal$$PENDING){enumerator._remaining--;if(state===lib$es6$promise$$internal$$REJECTED){lib$es6$promise$$internal$$reject(promise,value)}else{enumerator._result[i]=value}}if(enumerator._remaining===0){lib$es6$promise$$internal$$fulfill(promise,enumerator._result)}};lib$es6$promise$enumerator$$Enumerator.prototype._willSettleAt=function(promise,i){var enumerator=this;lib$es6$promise$$internal$$subscribe(promise,undefined,function(value){enumerator._settledAt(lib$es6$promise$$internal$$FULFILLED,i,value)},function(reason){enumerator._settledAt(lib$es6$promise$$internal$$REJECTED,i,reason)})};function lib$es6$promise$promise$all$$all(entries){return new lib$es6$promise$enumerator$$default(this,entries).promise}var lib$es6$promise$promise$all$$default=lib$es6$promise$promise$all$$all;function lib$es6$promise$promise$race$$race(entries){var Constructor=this;var promise=new Constructor(lib$es6$promise$$internal$$noop);if(!lib$es6$promise$utils$$isArray(entries)){lib$es6$promise$$internal$$reject(promise,new TypeError("You must pass an array to race."));return promise}var length=entries.length;function onFulfillment(value){lib$es6$promise$$internal$$resolve(promise,value)}function onRejection(reason){lib$es6$promise$$internal$$reject(promise,reason)}for(var i=0;promise._state===lib$es6$promise$$internal$$PENDING&&i<length;i++){lib$es6$promise$$internal$$subscribe(Constructor.resolve(entries[i]),undefined,onFulfillment,onRejection)}return promise}var lib$es6$promise$promise$race$$default=lib$es6$promise$promise$race$$race;function lib$es6$promise$promise$resolve$$resolve(object){var Constructor=this;if(object&&typeof object==="object"&&object.constructor===Constructor){return object}var promise=new Constructor(lib$es6$promise$$internal$$noop);lib$es6$promise$$internal$$resolve(promise,object);return promise}var lib$es6$promise$promise$resolve$$default=lib$es6$promise$promise$resolve$$resolve;function lib$es6$promise$promise$reject$$reject(reason){var Constructor=this;var promise=new Constructor(lib$es6$promise$$internal$$noop);lib$es6$promise$$internal$$reject(promise,reason);return promise}var lib$es6$promise$promise$reject$$default=lib$es6$promise$promise$reject$$reject;var lib$es6$promise$promise$$counter=0;function lib$es6$promise$promise$$needsResolver(){throw new TypeError("You must pass a resolver function as the first argument to the promise constructor")}function lib$es6$promise$promise$$needsNew(){throw new TypeError("Failed to construct 'Promise': Please use the 'new' operator, this object constructor cannot be called as a function.")}var lib$es6$promise$promise$$default=lib$es6$promise$promise$$Promise;function lib$es6$promise$promise$$Promise(resolver){this._id=lib$es6$promise$promise$$counter++;this._state=undefined;this._result=undefined;this._subscribers=[];if(lib$es6$promise$$internal$$noop!==resolver){if(!lib$es6$promise$utils$$isFunction(resolver)){lib$es6$promise$promise$$needsResolver()}if(!(this instanceof lib$es6$promise$promise$$Promise)){lib$es6$promise$promise$$needsNew()}lib$es6$promise$$internal$$initializePromise(this,resolver)}}lib$es6$promise$promise$$Promise.all=lib$es6$promise$promise$all$$default;lib$es6$promise$promise$$Promise.race=lib$es6$promise$promise$race$$default;lib$es6$promise$promise$$Promise.resolve=lib$es6$promise$promise$resolve$$default;lib$es6$promise$promise$$Promise.reject=lib$es6$promise$promise$reject$$default;lib$es6$promise$promise$$Promise._setScheduler=lib$es6$promise$asap$$setScheduler;lib$es6$promise$promise$$Promise._setAsap=lib$es6$promise$asap$$setAsap;lib$es6$promise$promise$$Promise._asap=lib$es6$promise$asap$$asap;lib$es6$promise$promise$$Promise.prototype={constructor:lib$es6$promise$promise$$Promise,then:function(onFulfillment,onRejection){var parent=this;var state=parent._state;if(state===lib$es6$promise$$internal$$FULFILLED&&!onFulfillment||state===lib$es6$promise$$internal$$REJECTED&&!onRejection){return this}var child=new this.constructor(lib$es6$promise$$internal$$noop);var result=parent._result;if(state){var callback=arguments[state-1];lib$es6$promise$asap$$asap(function(){lib$es6$promise$$internal$$invokeCallback(state,child,callback,result)})}else{lib$es6$promise$$internal$$subscribe(parent,child,onFulfillment,onRejection)}return child},"catch":function(onRejection){return this.then(null,onRejection)}};function lib$es6$promise$polyfill$$polyfill(){var local;if(typeof global!=="undefined"){local=global}else if(typeof self!=="undefined"){local=self}else{try{local=Function("return this")()}catch(e){throw new Error("polyfill failed because global object is unavailable in this environment")}}var P=local.Promise;if(P&&Object.prototype.toString.call(P.resolve())==="[object Promise]"&&!P.cast){return}local.Promise=lib$es6$promise$promise$$default}var lib$es6$promise$polyfill$$default=lib$es6$promise$polyfill$$polyfill;var lib$es6$promise$umd$$ES6Promise={Promise:lib$es6$promise$promise$$default,polyfill:lib$es6$promise$polyfill$$default};if(typeof define==="function"&&define["amd"]){define(function(){return lib$es6$promise$umd$$ES6Promise})}else if(typeof module!=="undefined"&&module["exports"]){module["exports"]=lib$es6$promise$umd$$ES6Promise}else if(typeof this!=="undefined"){this["ES6Promise"]=lib$es6$promise$umd$$ES6Promise}lib$es6$promise$polyfill$$default()}).call(this);
\ No newline at end of file
diff --git a/test/specs/__helpers.js b/test/specs/__helpers.js
index 68d27f3a9b..efb4fc6410 100644
--- a/test/specs/__helpers.js
+++ b/test/specs/__helpers.js
@@ -1,3 +1,6 @@
+// Polyfill ES6 Promise
+require('es6-promise').polyfill();
+
 // Polyfill URLSearchParams
 URLSearchParams = require('url-search-params');
 
diff --git a/test/specs/utils/isX.spec.js b/test/specs/utils/isX.spec.js
index 50c397c89e..08fa2c4462 100644
--- a/test/specs/utils/isX.spec.js
+++ b/test/specs/utils/isX.spec.js
@@ -2,6 +2,11 @@ var utils = require('../../../lib/utils');
 var Stream = require('stream');
 
 describe('utils::isX', function () {
+  it('should validate Array', function () {
+    expect(utils.isArray([])).toEqual(true);
+    expect(utils.isArray({length: 5})).toEqual(false);
+  });
+
   it('should validate ArrayBuffer', function () {
     expect(utils.isArrayBuffer(new ArrayBuffer(2))).toEqual(true);
     expect(utils.isArrayBuffer({})).toEqual(false);
diff --git a/test/specs/utils/trim.spec.js b/test/specs/utils/trim.spec.js
new file mode 100644
index 0000000000..1b45e953ef
--- /dev/null
+++ b/test/specs/utils/trim.spec.js
@@ -0,0 +1,12 @@
+var trim = require('../../../lib/utils').trim;
+
+describe('utils::trim', function () {
+  it('should trim spaces', function () {
+    expect(trim('  foo  ')).toEqual('foo');
+  });
+
+  it('should trim tabs', function () {
+    expect(trim('\tfoo\t')).toEqual('foo');
+  });
+});
+
diff --git a/webpack.config.js b/webpack.config.js
index 3917a38221..1a3e5b5317 100644
--- a/webpack.config.js
+++ b/webpack.config.js
@@ -1,13 +1,12 @@
-const webpack = require('webpack');
-const TerserPlugin = require('terser-webpack-plugin');
-const config = {};
+var webpack = require('webpack');
+var config = {};
 
 function generateConfig(name) {
-  return {
-    mode: 'production',
+  var uglify = name.indexOf('min') > -1;
+  var config = {
     entry: './index.js',
     output: {
-      path: `${__dirname}/dist`,
+      path: 'dist/',
       filename: name + '.js',
       sourceMapFilename: name + '.map',
       library: 'axios',
@@ -16,21 +15,30 @@ function generateConfig(name) {
     node: {
       process: false
     },
-    devtool: 'source-map',
-    optimization: {
-      minimize: name.includes('min'),
-      minimizer: [
-        // config options documented at https://github.com/webpack-contrib/terser-webpack-plugin#terseroptions
-        new TerserPlugin({
-          sourceMap: true,
-        }),
-      ],
-    },
+    devtool: 'source-map'
   };
+
+  config.plugins = [
+    new webpack.DefinePlugin({
+      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
+    })
+  ];
+
+  if (uglify) {
+    config.plugins.push(
+      new webpack.optimize.UglifyJsPlugin({
+        compressor: {
+          warnings: false
+        }
+      })
+    );
+  }
+
+  return config;
 }
 
-['axios', 'axios.min'].forEach(outputScript => {
-  config[outputScript] = generateConfig(outputScript);
+['axios', 'axios.min'].forEach(function (key) {
+  config[key] = generateConfig(key);
 });
 
 module.exports = config;