In WebpackDevMiddleware, when copying files, create any needed subdirectories. Fixesaspnet#408.

Author: SteveSandersonMS

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

@@ -1,6 +1,6 @@
 {
 "name": "aspnet-webpack",
-"version": "1.0.21",
+"version": "1.0.23",
 "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

@@ -93,7 +93,6 @@ function attachWebpackDevMiddleware(app: any, webpackConfig: webpack.Configurati
 
 // Attach Webpack dev middleware and optional 'hot' middleware
 constcompiler=webpack(webpackConfig);
-constoriginalFileSystem=compiler.outputFileSystem;
 app.use(require('webpack-dev-middleware')(compiler,{
 noInfo: true,
 publicPath: webpackConfig.output.publicPath
@@ -108,7 +107,7 @@ function attachWebpackDevMiddleware(app: any, webpackConfig: webpack.Configurati
 // file on disk wouldn't match the file served to the browser, and the source map line numbers wouldn't
 // match up. Breakpoints would either not be hit, or would hit the wrong lines.
 (compilerasany).plugin('done',stats=>{
-copyRecursiveSync(compiler.outputFileSystem,originalFileSystem,'/',[/\.hot-update\.(js|json)$/]);
+copyRecursiveToRealFsSync(compiler.outputFileSystem,'/',[/\.hot-update\.(js|json)$/]);
 });
 
 if(enableHotModuleReplacement){
@@ -122,17 +121,20 @@ function attachWebpackDevMiddleware(app: any, webpackConfig: webpack.Configurati
 }
 }
 
-functioncopyRecursiveSync(from: typeoffs,to: typeoffs,rootDir: string,exclude: RegExp[]){
+functioncopyRecursiveToRealFsSync(from: typeoffs,rootDir: string,exclude: RegExp[]){
 from.readdirSync(rootDir).forEach(filename=>{
 constfullPath=pathJoinSafe(rootDir,filename);
 constshouldExclude=exclude.filter(re=>re.test(fullPath)).length>0;
 if(!shouldExclude){
 constfileStat=from.statSync(fullPath);
 if(fileStat.isFile()){
 constfileBuf=from.readFileSync(fullPath);
-to.writeFile(fullPath,fileBuf);
+fs.writeFileSync(fullPath,fileBuf);
 }elseif(fileStat.isDirectory()){
-copyRecursiveSync(from,to,fullPath,exclude);
+if(!fs.existsSync(fullPath)){
+fs.mkdirSync(fullPath);
+}
+copyRecursiveToRealFsSync(from,fullPath,exclude);
 }
 }
 });