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# `whereInstanceOf()`
The whereInstanceOf method filters the collection by a given class type:
```js
const collection = collect([
new Player('Firmino'),
new Player('Salah'),
new Manager('Klopp'),
]);
const filtered = collection.whereInstanceOf(Player);
filtered.all();
// [
// new Player('Firmino'),
// new Player('Salah'),
// ]
```
[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/whereInstanceOf.js)