Removal of JSON Object with splice leads nowhere - How do i delete a chunk of data then?

Question

first of all, I wanna say that ** I have looked into some of the different topics hovering around with this.** If not 100 and a couple of youtube videos.

I've been sitting stuck on it for the last many hours.

I have a .json file structured such as this:

    {
        "PlayerData": [
            {
                "steamId": "76561193436459",
                "playerName": "x",
                "banReason": "x",
            }
    
        ]
    }

And so forth - you get the idea out from the array.

I've been fiddling with different kinds of Javascript code such as forEach() & (let i > 0 = bannedPlayerData.length i++) types of code, as well as trying out the splice method to cut out an object of this element.

What I am trying to achieve is that depending on the steam id you input - it will remove the entire block/object surrounding to that Steam ID.

So if I in this case input the following for steamid2

765611934365823 

it would supposedly remove this entire bit.:

{
                "steamId": "765611934365823",
                "playerName": "f",
                "banReason": "f",
},

However, after trying to use .splice(i, 1) a lot - there is no change at all in my JSON file. Example of a code I most recently tried:

Test: async function (message, server, steamid2) {

    try {
        const data = fse.readJsonSync(serverSettings + "Bans.json")
        for (var i = 0; i < data.bannedPlayerData.length; i++) {
                //splice(i, 1)
        }
    } catch (error) {
        console.error(error)
    }
},

Any idea of what goes wrong? It gets inside where the console.log is - and it actually doesn't print any errors using the command; there's just no simple change of structure in my JSON file, there are no changes happening.

I've been searching for quite a few hours for npm alternatives to using splice, even the delete... But here we are talking about a file that could have potentially thousands of data (currently its an example of 3) - and I kinda wanna avoid the delete XXX code, due hearing that it leaves white spaces after deleting; which could lead into corrupting my JSON file.

Answer 1

I've done a mix of both answers from Lioness100 & aRvi

Doing

data.bannedPlayerData.splice(data.bannedPlayerData.findIndex((u) => u.steamId === steamid2), 1)

Spliced/split the data as wanted. Saving the file through fse.writeJsonSync afterwards helped me succeeding in the expected result.

Both answers were posted as comments to my post, and not as a direct answer - hence i am unable to provide them both with a green check mark.