Ask HN: How to download all data from WhatsApp

I don't want to make this a political or sociological discussion about Facebook or WhatsApp.

For personal reasons I have decided to stop using WhatsApp.

When I closed my Facebook and Instagram accounts I was able to download all my data, including messages and media.

I was unable to do the same with my WhatsApp data, at least not unless I export each chat individually.

Does anyone know of a way to get such data in a cohesive way for my personal archive?