my-idlers/node_modules/collect.js/docs/api/diffKeys.md

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# `diffKeys()`
The diffKeys method compares the collection against another collection or a plain object based on its keys. This method will return the key / value pairs in the original collection that are not present in the given collection:
```js
const collection = collect({
a: 'a',
b: 'b',
c: 'c',
d: 'd',
});
const diff = collection.diffKeys({
b: 'b',
d: 'd',
});
diff.all();
// { a: 'a', c: 'c' }
```
[View source on GitHub](https://github.com/ecrmnn/collect.js/blob/master/src/methods/diffKeys.js)