I have a task that requires me to delete some data in an array that is in a JSON file, using node/express. I want, when a delete request is made, to delete a specific item that matches a specific id in the array that is in the JSON file. I tried using the filter method, but it doesn't seem to work.

JS file:

var obj = { projects: []};
app.post('/', (req, res, next)=>{
    let identifier = req.query.identify; //id of project

    fs.readFile('webProjects.json', (err, data)=>{
        if(err) throw err;
            obj = JSON.parse(data);
            obj.projects.push({id:identifier, game: req.query.project});
            let json = JSON.stringify(obj);
            fs.writeFile('webProjects.json', json, (err)=>{
                if(err) throw err
                console.log("updatedd")
            })
    })
})

/*when user sends delete request, delete specific data.*/
app.delete("/", (req, res, next)=>{

    fs.readFile('webProjects.json', (err, data)=>{
        console.log(data)
        obj = JSON.parse(data);
        obj.projects.filter((item)=>{
            let url = req.query.identify; 
            return item.id !== url;
        })
        console.log(obj)
        let json = JSON.stringify(obj);
        fs.writeFile('webProjects.json', json, (err)=>{
            if(err) throw err;
            console.log(obj)
        })
    })
})

/*when user navigates to another page, we display the data of the resource*/
app.get('/:id', (req, res, next)=>{
    fs.readFile('webProjects.json', (err, data)=>{
     if (err) throw err
     res.send(data);
    })
})


/*we want to catch all errors, with the requests made to the server.
used the wildcard(*) to make sure that we catch all requests made to the server.
*/
app.get('*', (req, res, next)=>{
    let err = new Error('There was an error in accessing the page you wanted');
    err.statusCode = 404;
    next(err);
})

app.use((err, req, res, next)=>{
    console.log(err.message)
    if(!err.statusCode) err.statusCode = 500;
    res.status(err.statusCode).send(err.message);
})

app.listen(8080, ()=>{
    console.log("server has listened")
})

JSON file/data:

{"projects":[{"id":"1","game":"miniGame"},{"id":"2","game":"min"}]}