wip. checking test for nextjs-ts add logs

Author: GoodDayForSurf

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

@@ -26,12 +26,13 @@ module.exports = function(commandName, args = [], customConfig = {}) {
                 code ? reject(code) : resolve();
             });
         } else {
-            proc.stdout.on('data', (data) => {
+            console.log('------proc.stdout---->', proc.stdout);
+            proc.stdout && proc.stdout.on('data', (data) => {
                 const output = data.toString();
                 console.log('SERVER STARTED!\n', output);
                 console.log('----runCommand --resolve---->');
-                resolve();
             });
+            resolve();
         }
     });
 

packages/devextreme-cli/testing/dev-server.js

@@ -23,6 +23,7 @@ module.exports = class DevServer {
             startedPromise = runCommand('npm', ['run', 'start'], {
                 cwd: this.env.appPath,
                 noExit: true,
+                detached: true,
                 // https://github.com/facebook/create-react-app/issues/3657
                 env: Object.assign(process.env, { CI: false })
             });