For most of the freeze-drying functionality, the freezeDry function is all you need. Its behaviour can be configured through its options parameter.

For slightly more control, you can use the FreezeDryer class directly (freezeDry is a simple convenience wrapper around it).

For still more advanced customisation needs, freeze-dry exposes many of its internal classes and functions, that you could use to build your own freezeDry-ish function.

Note that these exposed internals are not a stable API, and may be updated in future versions once typical usage patterns and needs become clear.

The Resource and Link abstractions help deal with links and subresources of web pages. Several utility functions are available too.