developer - update to latest web appbuilder version, typescript, arcgis api for javascript

#18

Author: gavinr

README.md

@@ -26,7 +26,7 @@ If you're not using the builder interface, this version extracts Web AppBuilder,
 1. Install Node.js.
 1. `npm install -g grunt-cli` (see https://gruntjs.com/getting-started)
 1. Clone or download this repo.
-1. Download the Web AppBuilder Developer Edition zip file from [here](https://developers.arcgis.com/web-appbuilder/), and save the zip file named `arcgis-web-appbuilder-2.12.zip` into the `developer/` folder, right at the same level as the `Gruntfile.js`.
+1. Download the Web AppBuilder Developer Edition zip file from [here](https://developers.arcgis.com/web-appbuilder/), and save the zip file named `arcgis-web-appbuilder-2.15.zip` into the `developer/` folder, right at the same level as the `Gruntfile.js`.
 1. In the terminal, browse to the `developer` folder
 1. `npm install`
 1. `grunt init`
@@ -39,6 +39,6 @@ Run `grunt` and as you modify your files, the web app should be updated automati
 
 A few notes about the general ideas and principles that are used in both the `builder` and `developer` versions of this code
 
-- We are currently supporting [TypeScript version 3.4](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-4.html).
+- We are currently supporting [TypeScript version 3.7](https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-7.html).
 - The Declare Decorator is used to tell TypeScript how to translate our Widget class into a dojo/declare syntax that Web AppBuilder is looking for. [Decorators are currently experimental](https://www.typescriptlang.org/docs/handbook/decorators.html) (although widely used) so beware of that small risk. If TypeScript did take out decorators at some point, we would have to change how we're doing this.
 - For more info, see this blog post: [Custom Web AppBuilder Widgets in TypeScript ](https://community.esri.com/people/GRehkemper-esristaff/blog/2017/12/13/custom-web-appbuilder-widgets-in-typescript)

developer/Gruntfile.js

@@ -77,7 +77,7 @@ module.exports = function(grunt) {
       }
     },
     unzip: {
-      'temp/': 'arcgis-web-appbuilder-2.12.zip'
+      'temp/': 'arcgis-web-appbuilder-2.15.zip'
     },
     connect: {
       server: {

developer/app/env.js

@@ -77,7 +77,7 @@ var
 
   //This version number will be appended to URL to avoid cache.
   //The reason we do not use wabVersion is to avoid force user to change wabVersion when they are customizing app.
-  deployVersion = '2.12';
+  deployVersion = '2.15';
 
 // console.time('before map');
 
@@ -90,10 +90,10 @@ var
 (function(global){
   //init API URL
   var queryObject = getQueryObject();
-  var apiVersion = '4.11';
+  var apiVersion = '4.14';
   ////////uncomment the following line when downloading the app
 
-  apiUrl = 'https://js.arcgis.com/4.11';
+  apiUrl = 'https://js.arcgis.com/4.14';
 
   //////////////////////////////////////////////////////////////
   allCookies = getAllCookies();