NodeJS中的Marshall JSON

Question

I have huge JSON as part of the REST request and want to marshall/unmarshall the JSON in NodeJS. I see that I can use JSON.parse to parse the JSON.

If I want to write the JSON, JSON.stringfy is available. But for huge JSON, this becomes very complicate.

I am looking for something like jackson-json in nodejs, where I can represent JSON schema/structure and store/manipulate the JSON in memory.

After I searched for long time, I found json-typescript-mapper . Is this the only way, where I can marshall/unmarshall json into equivalent objects in memory ? Is this the best practice to for JSON marshalling/unmarshalling in nodejs ?

Regards, Albie Morken

Answer 1

The best practice for marshall/unmarshall JSON in Javascript is JSON.stringify / JSON.parse as you mentioned. Javascript is untyped language so there is sadly/luckily no need for a class definition the JSON is mapped onto like it's in Jackson. You can still use Typescript or Flow for type checking.

If the JSON is huge and you're afraid that parsing will consume a lot of resources you can work with it like a node stream https://nodejs.org/api/stream.html . Node 10 will have support for async iteration over streams http://2ality.com/2018/04/async-iter-nodejs.html