How to use the @rxweb/reactive-form-validators.RxwebValidators.numeric function in @rxweb/reactive-form-validators

() => {
            let formBuilder = new FormBuilder();
            let formGroup = formBuilder.group({
              'dataType': 'Integer',
              'integerNumber': -15
            });
            expect(RxwebValidators.numeric({ acceptValue:NumericValueType.PositiveNumber,conditionalExpression: (x, y) => x.dataType == "Integer" })(formGroup.controls.integerNumber)).toEqual({ 'numeric': { message: 'Enter a valid numeric digit.', refValues: [-15] } }); 
          });

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            integerNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.PositiveNumber  ,allowDecimal:false })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            dataType:['',], 
            realNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.Both  ,conditionalExpression:'x => x.dataType == "Real"' })], 
            integerNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.PositiveNumber  ,conditionalExpression:(x,y) => x.dataType == "Positive"  })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            decimalNumber:['', RxwebValidators.numeric({allowDecimal:true })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            positiveNumber:['', RxwebValidators.numeric({message:'{{0}} is not a positive number' })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber  ,allowDecimal:true  ,message:'{{0}} is not a negative number' })], 
        });
    }
}

ngOnInit() {
        this.userInfoFormGroup = this.formBuilder.group({
            negativeNumber:['', RxwebValidators.numeric({acceptValue:NumericValueType.NegativeNumber  ,message:'{{0}} is not a negative number' })], 
        });
    }
}