Invalid integer string convertion from PHP serialized .msgpack

[RemiLelaidier]

Hi,

I am currently working on a project where I serialize JSON objects using the php library msgpack-php, but when I try to deserialize these objects using the javascript library msgpack-javascript, my integers are truncated.

PHP :

$data = [
    '7355750935770677725' => "test",
];

$msg = msgpack_pack($data);

...

JS :

import { decode } from '@msgpack/msgpack';

const decoded = decode(entry);

console.log(decoded)

Result :

{  '7355750935770677000': 'test'  }

As you can see the last three digits of my integer are set to 0.

This seems to be an interoperability problem between the php library and Node.js

[BerndAmend]

Your number is bigger than Number.MAX_SAFE_INTEGER and can therefore not be processed as a JavaScript number.
You may need to have a look at the JavaScripts BigInt type and the DecoderOption useBigInt64.

[WebReflection]

curious to know, as PHP has both associative arrays and regular arrays or stdClass, how MessagePack addresses those ... clearly in here if MessagePack JS creates an array with such length some concern might rightly so raise?