Trying to parse a string json data with packed event, getting error.

[Code-Crash]

I'm trying to parse the string JSON with the compress event as below, but it's throwing an error,

let data = `{
  "token": "xyz",
  "event": "x�%�K\u000e� \u0010�ïò¯YH[L�Kô\u0000�\u000b¢�°P�3\u001a\ráî¢n¿G�\u001cÉ�Þ\n�\u0013\u0007Êà¸.}EZ!E\u000e\u0012âÌ �Æ\u000eúh£pT×Z�0Ü��ÉÿÆ�½��Ò��°¸)]¡±Í·µÖ�Wm7\u00106�r\u0002�l#T"
}`
const event: any = JSON.parse(strFromU8(unzlibSync(strToU8(ll, true)))); // throws error

it's throwing Error: invalid zlib data

Is there any way to parse it somehow?

I want to parse the string first and uncompress the event, trying a bunch of things but not getting anywhere, please have a look.

Note: Actual packed data is being unencoded while posting the issue by github.

[101arrowz]

You probably need to parse the JSON first.

let data = `...`
const event = JSON.parse(data);
event.event = strFromU8(unzlibSync(strToU8(event.event, true)));

[Code-Crash]

@101arrowz When I'm trying to parse JSON, it is throwing an error, with invalid control character in JSON string

[101arrowz]

How did you generate that string then? If you created it with some custom code (e.g. const mystr = { "token": "xyz", event: "${myBinaryString}" }`) then it's not actually real JSON, you can't use it. You'll have to find the starting and ending quote manually, at which point you should reconsider your format.

[Code-Crash]

Thanks @101arrowz for your reply, actually JSON was valid, but I was reading this data from the file and I was converting first into ASCII which cause the issue, now I'm reading content directly which is working, JSON.parse is able to parse it.

Thanks.