Bug Report

Current Behavior
I am getting following errror after using npm start or ng build --prod

ERROR in node_modules/rxjs/internal/types.d.ts(81,44): error TS1005: ';' expected.
node_modules/rxjs/internal/types.d.ts(81,74): error TS1005: ';' expected.
node_modules/rxjs/internal/types.d.ts(81,77): error TS1109: Expression expected.

Expected behavior
npm start or ng build command should run without any error.

Environment

• Runtime: Node {8.9.0} NPM{6.4.0}
• RxJS version:6.4.0