带有ReactiveFormModule的Angular FormArray验证错误

Question

this.billingForm = this.fb.group({
      "fullname": [null, [Validators.required, Validators.pattern('.*\\S'), Validators.minLength(3)]],
      "address1": [null, [Validators.required, Validators.pattern('.*\\S')]],
      "address2": [null, Validators.pattern('.*\\S')],
      "city": [null, [Validators.required, Validators.pattern('.*\\S')]],
      "state": [null, Validators.pattern('.*\\S')],
      "zipcode": [null, Validators.pattern('.*\\S')],
      "country": [null, Validators.required],
      "taxId": [null, [Validators.required, Validators.pattern('.*\\S')]],
      "contacts": this.fb.array([this.contactDetail()], [Validators.required, Validators.pattern('.*\\S')])      
    });

Validators.pattern（'。* \ S'）不能与表单数组一起使用，并且可以用于其他控件。