如何从typescript中的字符串中获取枚举类型？

enum Color {
  Red = "red",
  Green = "green",
  Blue = "blue"
}

function getEnumValue(str: string): Color | undefined {
  const keys = Object.keys(Color).filter(key => isNaN(Number(key)));
  const values = keys.map(key => Color[key as keyof typeof Color]);
  const index = values.indexOf(str);
  return index !== -1 ? Color[keys[index] as keyof typeof Color] : undefined;
}

const colorValue = getEnumValue("red");
console.log(colorValue); // 输出：Color.Red