如何从Typescript中的泛型类型获取常量属性？

type GenericType<T> = {
  [K in keyof T]: T[K];
};

type ConstantType<T> = {
  [K in keyof T]: typeof T[K];
};

function getConstantProperties<T>(obj: GenericType<T>): ConstantType<T> {
  const constantProperties: Partial<ConstantType<T>> = {};

  for (const key in obj) {
    if (Object.prototype.hasOwnProperty.call(obj, key)) {
      constantProperties[key] = obj[key];
    }
  }

  return constantProperties as ConstantType<T>;
}

// 示例用法
const obj = {
  constant1: 'value1',
  constant2: 123,
  constant3: true,
};

const constants = getConstantProperties(obj);
console.log(constants);