Which one is the best for production?[json parse]

[Salamdev]

Which one is best for production?
I want to parse json post data in the best efficient way and with the least error.

app.post('/', (res, req) => {
    let json;
    res.onData((chunk, isLast) => {
        if (isLast) {
            json = JSON.parse(Buffer.from(chunk).toString());           
        }
    });
    res.end('some data')

});

or

app.post('/', (res, req) => {
    let json;
    res.onData((chunk, isLast) => {
        if(isLast){
            json = JSON.parse(Buffer.from(chunk).toString());
            res.cork(() => {               
                res.end('some data');
            })
        }
    });
});

or

app.post('/', (res, req) => {
    let json;
    res.onData((chunk, isLast) => {
        if(isLast){           
            res.cork(() => {
                json = JSON.parse(Buffer.from(chunk).toString());               
                res.end('some data');
            })
        }
    });
});

or using JsonPost.js example

[ghost]

The last alternative is better than the first, since you do use cork. But the second alternative is just as good for the same reason. This is covered in the user manual.