try manual args join

Author: VasilyStrelyaev

packages/devextreme-cli/src/utility/run-command.js

@@ -8,6 +8,7 @@ module.exports = function(commandName, args = [], customConfig = {}) {
     const config = {
         stdio: 'inherit',
         windowsVerbatimArguments: true,
+        shell: true,
     };
 
     if(customConfig) {
@@ -16,7 +17,7 @@ module.exports = function(commandName, args = [], customConfig = {}) {
 
     console.log(`> ${command} ${args.join(' ')}`);
 
-    const proc = spawn(command, args, config);
+    const proc = spawn(`${command} ${args.join(' ')}`, config);
 
     return new Promise((resolve, reject) => {
         proc.on('exit', (code) => {

packages/devextreme-schematics/src/add-app-template/index.ts

@@ -42,12 +42,15 @@ export default function(options: any): Rule {
 }
 
 const postinstallScripts = () => {
+  const isWin = /^win/.test(process.platform);
+
   const sassEmbeddedPath = resolve('node_modules', 'sass-embedded');
   const sassVendorPath = join(sassEmbeddedPath, 'dist', 'lib', 'src', 'vendor', 'dart-sass-embedded');
   if (!existsSync(sassVendorPath)) {
-    spawnSync('npm', ['run', 'postinstall'], {
+    spawnSync('npm run postinstall', {
       cwd: resolve(join('node_modules', 'sass-embedded')),
       windowsVerbatimArguments: true,
+      shell: isWin ? false : true
     });
   }
 };