如何将json中的数字转换为typescript界面​​中的字符串

Question

{
   "id": 13,
   "name": "horst",
}

to

 interface A {
    id: string;
    name: string;
}

when A json converts to A object, I expected to convert id from number to string automatically. but it doesn't convert.

i want to convert from number to string by type infer. when a json parse to object. how can i do it?

ps. sorry my English is poor..

Answer 1

Typescript doesn't include any type information at runtime. You need to use something like io-ts to perform runtime coercion of parsed types into typed data structures.