iter-fns - v0.13.0

iter-fns is a set of iteration utilities that allow you to construct chains of lazy operations.

iter-fns additionally extends iterables in various opt-in ways, such as reverse iteration (via ReverseIterable) and sized iterables (via SizedIterable) where supported.

This allows certain operations to be more efficient when possible, but still abstracts over the underlying container, whether it's an array, a string, or otherwise.

iter-fns additionally guarantees that:

• For functions that return iterables, results are computed lazily with minimal auxiliary space.
• Reverse iteration, when supported, has the same asymptotic runtime cost as forward iteration.
• Iterables are compatible with built in functions that expect iterables, such as Array.from.
• Any function that does any kind of ordering will make use of Compare.
• Any function that needs any kind of randomness will make use of Random.

If you need built in JavaScript types to support reverse iteration and sized iterables, you can import shims.