Class MyCustomError

test/specs/stack.spec.js:72–77

      function makeOuterError (originalError) {
        class MyCustomError extends Error {
          constructor (message) {
            super(message);
            this.stack = undefined;
          }
        }

        let myCustomOno = new Ono(MyCustomError);
        return myCustomOno(originalError, "Oops, an error happened.");