Have trouble understanding the use of "!" operator in angular 4.x.x source code. It occurs quite often across some native modules but seems redundant.
Example: this.withCredentials = requestOptions.withCredentials !;
I also didn`t manage to run the code with "!" in my Chrome console without an exception. Can somebody clarify the meaning?
https://github.com/angular/angular/blob/master/packages/http/src/static_request.ts You can find the example of usage on 102, 103, 97, 78 etc. lines.
