suppressWarnings decorator function cannot suppress deprecated decorator function call console.warn output

[xiaofan9]

import { suppressWarnings } from 'core-decorators';

class Person {
  @deprecated
  facepalm() {}

  @suppressWarnings
  facepalmWithoutWarning() {
    console.warn("it is not output"); // not output
    this.facepalm();
  }
}

let person = new Person();

person.facepalmWithoutWarning();
// no warning is logged

The above code actually runs, it will still be able to call console.warn and output the warning, but facepalmWithoutWarning function call console.warn is not output.