Boa tarde, conforme abaixo executei os comandos porém o localhost não abriu automaticamente:
npm install rxjs@6.0.0 --save
ng serve --open
i ｢wdm｣: Compiled successfully. (node:6612) UnhandledPromiseRejectionWarning: Error: spawn cmd ENOENT at _errnoException (util.js:992:11) at Process.ChildProcess._handle.onexit (internal/child_process.js:190:19) at onErrorNT (internal/child_process.js:372:16) at _combinedTickCallback (internal/process/next_tick.js:138:11) at process._tickCallback (internal/process/next_tick.js:180:9) (node:6612) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 1) (node:6612) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
