I got an error of
node_modules/rxjs/internal/types.d.ts(81,44): error TS1005: \';\' expected.
after the installation of Angular
This issue is caused by version of typescript installed was not compatible with that of the rxjs installed.Installation of typescript as mentioned below helped me install the compatible version of typescript with that of the angular packages already installed.You can resolve the issue by the below command
npm install typescript
This worked for me