Can you include some usage examples on how to implement this?

[IJsLauw]

Like https://deno.land/x/download@v2.0.2 has perhaps?

I'm missing something on how to save to a file, although I guess the drainStream should be used somehow?

[bjesuiter]

I've added some usage examples now in 0.3.3 (see https://deno.land/x/downstream@0.3.3),

But you're right, I planned on adding some more utilities for easily piping this into a file.
Thank you for reminding me!