replace()
The replace method behaves similarly to merge; however, in addition to overwriting matching items with string keys, the replace method will also overwrite items in the collection that have matching numeric keys:
const collection = collect({
name: "Bob"
});
const replaced = collection.replace({
name: "John",
number: 45
});
replaced.all();
//=> {
//=> name: 'John',
//=> number: 45,
//=> }