Pass through error stack when NPM module loading failed in aspnet-webpack and aspnet-prerendering to make debugging easier

Author: SteveSandersonMS

src/Microsoft.AspNetCore.SpaServices/npm/aspnet-prerendering/package.json

@@ -1,6 +1,6 @@
 {
   "name": "aspnet-prerendering",
-  "version": "1.0.6",
+  "version": "1.0.7",
   "description": "Helpers for server-side rendering of JavaScript applications in ASP.NET Core projects. Works in conjunction with the Microsoft.AspNetCore.SpaServices NuGet package.",
   "main": "index.js",
   "scripts": {

src/Microsoft.AspNetCore.SpaServices/npm/aspnet-prerendering/src/Prerendering.ts

@@ -128,7 +128,7 @@ function findBootModule<T>(applicationBasePath: string, bootModule: BootModuleIn
         try {
             aspNetWebpackModule = require('aspnet-webpack');
         } catch (ex) {
-            callback('To load your boot module via webpack (i.e., if you specify a \'webpackConfig\' option), you must install the \'aspnet-webpack\' NPM package.', null);
+            callback('To load your boot module via webpack (i.e., if you specify a \'webpackConfig\' option), you must install the \'aspnet-webpack\' NPM package. Error encountered while loading \'aspnet-webpack\': ' + ex.stack, null);
             return;
         }
 

src/Microsoft.AspNetCore.SpaServices/npm/aspnet-webpack/package.json

@@ -1,6 +1,6 @@
 {
   "name": "aspnet-webpack",
-  "version": "1.0.12",
+  "version": "1.0.13",
   "description": "Helpers for using Webpack in ASP.NET Core projects. Works in conjunction with the Microsoft.AspNetCore.SpaServices NuGet package.",
   "main": "index.js",
   "scripts": {

src/Microsoft.AspNetCore.SpaServices/npm/aspnet-webpack/src/WebpackDevMiddleware.ts

@@ -73,7 +73,7 @@ export function createWebpackDevServer(callback: CreateDevServerCallback, option
                 try {
                     aspNetWebpackReactModule = require('aspnet-webpack-react');
                 } catch(ex) {
-                    callback('To use ReactHotModuleReplacement, you must install the NPM package \'aspnet-webpack-react\'.', null);
+                    callback('ReactHotModuleReplacement failed because of an error while loading \'aspnet-webpack-react\'. Error was: ' + ex.stack, null);
                     return;
                 }
 
@@ -93,7 +93,7 @@ export function createWebpackDevServer(callback: CreateDevServerCallback, option
             try {
                 webpackHotMiddlewareModule = require('webpack-hot-middleware');
             } catch (ex) {
-                callback('To use HotModuleReplacement, you must install the NPM package \'webpack-hot-middleware\'.', null);
+                callback('HotModuleReplacement failed because of an error while loading \'webpack-hot-middleware\'. Error was: ' + ex.stack, null);
                 return;
             }
             app.use(webpackHotMiddlewareModule(compiler));