HarmonyOS 类型检查？

Question

struct DetailFindHome {
  @State detail: ProDetailBaseInfo = {} as ProDetailBaseInfo
  @State transportString: string = ''

  aboutToAppear(): void {
    let seconds = this.detail.customer_company_address.calculate_commute_time
    this.transportString = this.detail.customer_company_address.transport_type_name + '约' + seconds.toString()
  }
}

上面这快代码使用ProDetailBaseInfo 时报错

Error message:Cannot read property company_address of undefined
SourceCode:
  Text.create(this.detail.customer_company_address.company_address);

export interface ProDetailBaseInfo {
  customer_company_address: ProCustomerCompanyAddres;
}

export interface ProCustomerCompanyAddres {
  company_address: string;
}

相关的类型定义如上，请假这里的类型该如何检查，避免undefined 报错。应用内有大量的这种写法，该如何优化

Answer 1

关于类型检查，可以参考这个链接：

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-util-V5\#types8