What does $ sign at the end of function name indicate?

Question

Here is the code I\'m reviewing...

import { Observable } from \'rxjs/Rx\';
// reducer
import { playerRegister, PlayerState } from \'./player\';
export functi         


        

Answer 1

Syntactically, the dollar ($) character has no special meaning in JavaScript identifiers.

It is, however, sometimes used by convention to indicate that a variable holds an Observable or that a function will return an Observable.