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

whenEmpty()

The whenEmpty method will execute the given callback when the collection is empty:

const collection = collect([]);

collection.whenEmpty(c => c.push('Mohamed Salah'));

collection.all();

// ['Mohamed Salah']

const collection = collect(['Sadio Mané']);

collection.whenEmpty(
  c => c.push('Mohamed Salah'),
  c => c.push('Xherdan Shaqiri'),
);

collection.all();

// [
//   'Sadio Mané',
//   'Xherdan Shaqiri',
// ];

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