Docs are outdated. How to call JSON.stringify()?

[ryancwalsh]

I'm looking for a replacement of JSON.stringify() that I can call in my NEAR AssemblyScript contract.

I found this repo.

1edab43 commit message "Made JSON.stringify comptible with javascript JSON" (sic) was encouraging.

But

assemblyscript-json/assembly/JSON.ts

Line 85 in 1edab43

namespace _JSON {

doesn't seem to expose stringify(), from what I can tell.

And even encoder.stringify() mentioned at https://github.com/near/assemblyscript-json/blob/1edab439e33acd787671618d33c1ec4250f523c9/README.md#encoding-json doesn't seem to be available.

What am I misunderstanding? Thanks!

[willemneal]

I'd use @serial-as/json. See https://github.com/gagdiez/serial-as/tree/main/json

[ryancwalsh]

@willemneal Thanks. I also had found https://www.npmjs.com/package/json-as (which I guess I will use) but felt inclined to rely on a NEAR repo instead (this one).

[mariusa]

So this entire module can't be used for JSON.stringify(obj) ?

[willemneal]

See the link above serial-as/json:

import * as JSON from '@serial-as/json'

@serializable
class Pair{
  x: i32 = 0,
  y: i32 = 0
}

let pair: Pair = {x:1, y:2}

// `serialized` is the string "{"x":1,"y":2}"
let serialized: string = JSON.stringify(object)  

[mariusa]

Thanks! So there are 3 npm modules for JSON support in assemblyscript (rather than being built-in)

https://www.npmjs.com/package/assemblyscript-json
https://www.npmjs.com/package/json-as
https://www.npmjs.com/package/@serial-as/json

What a mess :(

[willemneal]

The serial-as still uses this library for the JSON types, but rather is part of a serializing framework. It should be part of the language, to match with JS, but any of these libraries do work relatively well.

[mariusa]

Thanks again! Saw that json-as requires a class defined for each object property. Does serial-as too?
(feel free to answer in gagdiez/serial-as#38 )

[JairusSW]

@mariusa, json-as used to generate its own classes so that you could create a Object Literal which would then be replaced by the generated class, but that broke as AS updated. Working on re-implementing that feature