If you're not married to functional code, for searching a keyed object by property for the key, you can always write:
for (const key in data) {
if (data[key].firstName === 'Frederic') {
console.log(key);
}
}
No need to transform the whole object with Object.entries, and you could turn that into a function reasonably easy, something like findKey(object, property, value) or some such.
If you're not married to functional code, for searching a keyed object by property for the key, you can always write:
No need to transform the whole object with Object.entries, and you could turn that into a function reasonably easy, something like
findKey(object, property, value)or some such.