type Answer = { error: false; status: boolean } | { error: true; description: string };

   async has_READ_EXTERNAL_STORAGEv1(): Promise<Answer> {
     return await this.androidPermissions
      .checkPermission(this.permission.READ_EXTERNAL_STORAGE)
      //.then((current) => ({ error: false, status: current.hasPermission})) <--ERROR
      //.then((current) => ({ error: false as const, status: current.hasPermission})) <--NO ERROR
      .catch((error) => ({ error: true, description: error.message as string}));
   }

错误

Type '{ error: boolean; status: boolean; } | { error: true; description: string; }' 
is not assignable to type 'Answer'.
Type '{ error: boolean; status: boolean; }' is not assignable to type 'Answer'.
Type '{ error: boolean; status: boolean; }' is not assignable to type '{ error: false; status: boolean; }'.
Types of property 'error' are incompatible.
Type 'boolean' is not assignable to type 'false'.ts(2322)

p.s.：如果我以'as const'的形式返回它，我不会得到任何错误，但是，当我使用函数时，它不会检测status属性。

第二个错误

Property 'status' does not exist on type 'Answer'.
Property 'status' does not exist on type '{ error: true; description: string; }'

第一个编辑

async has_READ_EXTERNAL_STORAGEv1(): Promise<Answer> {
  return await this.androidPermissions
    .checkPermission(this.permission.READ_EXTERNAL_STORAGE)
    .then((current) => ({ error: false, status: current.hasPermission} as Answer))
    .catch((error) => ({ error: true, description: error.message as string} as Answer));
}

p. s.：当我使用该函数时，它一直告诉我status属性不存在。

第二次编辑

await this.has_READ_EXTERNAL_STORAGEv1().then(answer => {
  if (!answer.error) {
    console.log(answer.status); // <--Error
    // when I use the function, it keeps telling me that the status property does not exist.
  } else {
    console.log(answer.description);
  }
});