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

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:

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' }

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