wip. checking test for nextjs-ts add logs

Author: GoodDayForSurf

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

@@ -24,6 +24,7 @@ module.exports = class DevServer {
                 cwd: this.env.appPath,
                 noExit: true,
                 detached: true,
+                stdio: 'pipe',
                 // https://github.com/facebook/create-react-app/issues/3657
                 env: Object.assign(process.env, { CI: false })
             });