如何在带有Typescript的React中循环通过两个接口属性的并集

从下面的结构使用React 16.9.0和Typescript ^16.9.20"：

file A.ts:
export interface person{
  id: number || null,
  first_name: string,
  date_of_birth: string,
  some_unique_number: string,
}


file B.ts:
export interface member{
 group_name: string:
 first_name: string,
 pass_code: string,
 some_unique_number: string,
}


file C.tsx:
# import file A
# import file B

interface Props {
  result: Array<person | member>; 
}

let newResult: any[] = [];                       <=== I feel like `any[]` is wrong maybe

if (result) {
    newResult = results.map((result) => {
      return (
        <div className="something" key={item.some_unique_number}>
          {result.id}
          {result.first_name}
          {result.date_of_birth}
          {result.group_name}
          {result.pass_code}
        </div>
      );
    });
  }

我上面的当前解决方案正在产生以下错误：

Property 'id' does not exist on type 'person | member'.
  Property 'id' does not exist on type 'member'.  TS2339

    20 |         <div className="something" key={item.external_member_id}>
  > 21 |           {item.id}

基本上，我要完成的工作是通过两个界面循环并显示A和B。

先谢谢您。

可能重复，