打字稿 - 迭代以解析/完善对象

发布于 2025-02-10 06:11:15 字数 746 浏览 1 评论 0原文

我正在尝试解析一个对象来完善不必要的数据 - 在这种情况下，我会在rtn [key]上遇到错误，而我对为什么不了解。请阅读TL; dr的更多背景，并提前感谢；

type TValueCar = { make: { value: string }; model: { value: string } };
type TCarKey = keyof TValueCar;
type TCar = { make: { value: string }; model: { value: string } };

const parseCarValueObject = (valueObject: TValueCar): TCar => {
  const ObjectKeys = Object.keys(valueObject) as TCarKey[];

  const rtn = {} as TCar;
  ObjectKeys.forEach((key) => {
    rtn[key] = valueObject[key].value;
  });

  return rtn;
};

tl; dr 我希望创建此功能的通用版本，这是我尝试的第一阶段。我意识到，解决此问题的方法更简单，这并不是很简单，但对我创建通用功能没有帮助。 [下面的摘录]

const rtn = {
    make:valueObject.make.value,
    model:valueObject.model.value
}

原文

I am trying to parse an object to refine the unnecessary data - in this case I get an error at rtn[key], and I have no understanding of why. Please read the tl;dr for some more context and thanks in advance;

type TValueCar = { make: { value: string }; model: { value: string } };
type TCarKey = keyof TValueCar;
type TCar = { make: { value: string }; model: { value: string } };

const parseCarValueObject = (valueObject: TValueCar): TCar => {
  const ObjectKeys = Object.keys(valueObject) as TCarKey[];

  const rtn = {} as TCar;
  ObjectKeys.forEach((key) => {
    rtn[key] = valueObject[key].value;
  });

  return rtn;
};

tl;dr
I am hoping to create a generic version of this function, and this is the first stage in my attempt. I realise that there is an easier way of solving this which doesn't would be very simple but wouldn't be helpful in my attempt to create the generic function. [Extract below]

const rtn = {
    make:valueObject.make.value,
    model:valueObject.model.value
}

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黑凤梨 2025-02-17 06:11:15

在此行中，

rtn[key] = valueObject[key].value;

您正在尝试将valueObject的值字符串分配给type tcar，该期望类型的对象{value> {value：“ sosited” sometss'} ，这就是为什么您会遇到此错误的原因。

尝试简单地删除对value的访问，以便将整个对象分配给您的rtn变量。

const parseCarValueObject = (valueObject: TValueCar): TCar => {
  const ObjectKeys = Object.keys(valueObject) as TCarKey[];

  const rtn = {} as TCar;
  ObjectKeys.forEach((key) => {
    // It should works now
    rtn[key] = valueObject[key];
  });

  return rtn;
};

See the example on typescript playground

In this line

rtn[key] = valueObject[key].value;

You are trying to assign the string of value from valueObject to the type TCar that expects an object of type { value: "something" }, this is why you're getting this error.

try to simply remove the access to value in order to assign the whole object to your rtn variable.

const parseCarValueObject = (valueObject: TValueCar): TCar => {
  const ObjectKeys = Object.keys(valueObject) as TCarKey[];

  const rtn = {} as TCar;
  ObjectKeys.forEach((key) => {
    // It should works now
    rtn[key] = valueObject[key];
  });

  return rtn;
};

See the example on typescript playground

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