Hello, folks. In a library I'm working on, I have a class holding a map, and `toString()` on that cl...

# javascript

[hallvard]

Hello, folks. In a library I'm working on, I have a class holding a map, and toString() on that class should return JSON.stringify(theMap). But that won't work since js maps have this prototype thing in them (at least I think that's why), and so there are circular references in js runtime. Has anyone got a good idea about how I could convert the map into something that JSON.stringify() would like?

[Roman Artemev [JB]]

Hi Hallvard, I think https://github.com/Kotlin/kotlinx.serialization might be helpful

[hallvard]

Yeah, and I wish to go there. I even prepared my code for it, in a branch for a version 2. But for different reasons, I also need a version 1 to work without the built-in kotlin serialization ...

[Roman Artemev [JB]]

So you could use replacer parameter of JSON.stringify to handle cyclic references using indexes or something similar and keep another object with this information.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify#Parameters

[hallvard]

Nice, @Roman Artemev [JB]. Thanks. I'll give it a try.