What if we allow adding a custom function to calculate the strength of a password? Some products may force special characters; some may not. Others may require at least one capital letter, and some may not 🤔

We should have a standard strength calculation, but allowing overwriting of this calculation seems interesting to reach different requirements for each project.

Maybe something like:

Donut

<Donut.Root strengthEstimator={myCustomPasswordStrengthEstimator}>
   <Donut.Track />
   <Donut.Value />
</Donut.Root>

Here, my myCustomPasswordStrengthEstimator function may return an integer as the percentage where 100% is strong enough, and 0% is too weak.

Bars

<Bars.Root strengthEstimator={myCustomPasswordStrengthEstimator}>
   <Bars.Bar />
   <Bars.Bar />
   <Bars.Bar />
   <Bars.Bar />
   <Bars.Bar />
</Bars.Root>

Here, my myCustomPasswordStrengthEstimator function may return an integer as the percentage where 100% is strong enough, and 0% is too weak. We could get the result and divide it by the number of <Bars.Bar />'s to calculate which bars should be filled and which should not (maybe using Math.floor).

What do you think?

At the moment the prototypes for those are more low-level so you could wire them to whatever rules you want/have.
However, I can absolutely see some built-in way to provide rules too. We have already explored password strength validation which could check solid strength using https://github.com/dropbox/zxcvbn for example, and also check password breach databases.

Got it! Sounds good!