如何修改getDataBykey方法,使其能够根据field的值推断出准确的返回类型,而非联合类型
type Data = {
name: string,
age: number,
isMan: boolean,
};
function getDataByKey(data: Data, field: keyof Data) {
return data[field];
}
const result = getDataByKey({ name: "lee", age: 22, isMan: true }, "name");