Can anyone help me with this array?

I hope someone might be able to help me with this.

A website I am using converts peoples user names to some kind of array, that I am trying to replicate.
I think it is uint8 but when I try to convert my user name to uint8 it doesn't match what is on the website and I have no idea how to get the correct array for my username.

My user name is mp3ay.wam and the array generated by the website is 0,0,144,134,3,111,70,149

I believe this is the code that the website is using to create this array:

/* uint8array to / from hex strings */
const fromHexString = hexString =>
new Uint8Array(hexString.match(/.{1,2}/g).map(byte => parseInt(byte, 16)));

const toHexString = bytes =>
bytes.reduce((str, byte) => str + byte.toString(16).padStart(2, '0'), '');

const nameToInt = (name) => {
const sb = new Serialize.SerialBuffer({
textEncoder: new TextEncoder,
textDecoder: new TextDecoder
});

sb.pushName(name);

const name_64 = new Int64LE(sb.array);

return name_64 + '';
}

const nameToArray = (name) => {
const sb = new Serialize.SerialBuffer({
textEncoder: new TextEncoder,
textDecoder: new TextDecoder
});

sb.pushName(name);

return sb.array;
}

const intToName = (int) => {
int = new Int64LE(int);

const sb = new Serialize.SerialBuffer({
textEncoder: new TextEncoder,
textDecoder: new TextDecoder
});

sb.pushArray(int.toArray());

const name = sb.getName();

return name;
}

Can anyone help me understand what is going on here?

It's hard to know for sure without seeing the imports, but it looks like you'll want to look into the following two libraries:

https://www.npmjs.com/package/int64-buffer
https://nodejs.org/api/util.html#util_class_util_textencoder
If nothing else, try importing those libraries into the code above and running your name through the nameToArray() function.