javascript how to check for an empty object

function isObjectEmpty(obj) {
    return Object.keys(obj).length === 0;
}

function isEmptyObject(obj) {
    return !Object.keys(obj).length;
}

> !!Object.keys(obj).length;

// because Object.entries(new Date()).length === 0;
// we have to do some additional check
Object.entries(obj).length === 0 && obj.constructor === Object

JSON.stringify({}) !== '{}';