withDefaults Obj使用方法

比如 我封装了个types，如下

export type TreeOptionProps {
    children?: string;
    label?: string;
    value?: string;
    disabled?: string;
}
export type typeSeachTreeProps = {
  data?: any[];
  props?: TreeOptionProps;
  height?: number;
};
export type typeSeachTreeV2 = typeSeachTreeProps & {
  isFilter?: boolean;
  xxxx:xxxxx .....
};

A组件

const config = reactive<TreeOptionProps>({
  children: "children",
  label: "DeviceName",
  value: "PointAddressID"
});
传递给b组件
 <B :props="config" :data="data" />
传递给B组件

B组件

b组件接收
const props = withDefaults(defineProps<typeSeachTreeV2>(), {
  isFilter: true,
});
传递给C组件
<C :data="data" :props="props.props" />

C组件

C组件接收
const props = withDefaults(defineProps<typeSeachTreeProps>(), {
  data: () => [],
  props: () => ({
    value: "id",
    label: "label",
    children: "children",
    disabled: "disabled"
  })
});

如果C组件在设置不添加默认值类型 props: (): TreeOptionProps =>({xxxx});
B组件 <C :data=“data” :props=“props.props” / > 这里的props会提示
不能将类型“TreeOptionProps”分配给类型“{ value: string; label: string; children: string; disabled: string; }”。

C组件接收（正确写法）

const props = withDefaults(defineProps<typeSeachTreeProps>(), {
  data: () => [],
  props: (): TreeOptionProps => ({
    value: "id",
    label: "label",
    children: "children",
    disabled: "disabled"
  })
});