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# `keys()`
The keys method returns all of the collection's keys:
```js
const collection = collect([
{
club: 'Liverpool',
nickname: 'The Reds',
},
]);
keys = collection.keys();
// ['club', 'nickname']
```
[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/keys.js)