collect.js

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',
//=> ];

View source on GitHub

← whenNotEmpty() →