Aside from the fact that they are basically generating power sets, if you don’t need all the values at once, a better method would be to use a generator functio

Aside from the fact that they are basically generating power sets, if you don’t need all the values at once, a better method would be to use a generator function if all you are doing is iterating. That way you don’t need to create all the values in memory first. A library that I like for this is https://www.npmjs.com/package/generatorics https://www.npmjs.com/package/generatorics although there may be more modern ones available.