How can I deserialize a JSON string into an object / array when I dont know its type(class) in advance?

[hmassareli]

In my case, my frontend will let the user upload a JSON file, wich will then be parsed to an object, or an array (depending on the file that the user uploads) using assembly-script. I don't really know how to do it because most libs require a class / type in advance to specify what the json will be like.

possible file examples:

"[
{name: "Henrique},
]"

"{
car: "mustang",
amount: 1400,
}"

as you can see, the string doesnt match any pattern, and therefore the output of the function will be unknown as well (object with objects inside, array of objects, etc)

Any idea on how to do it?