Increase precision of size-based values

[eduardoboucas]

Which problem is this feature request solving?

Byte values are being truncated at the unit (e.g. netlify/cli#2169 (comment)). This creates a situation where we detect a change but the value doesn't have enough precision to show it.

Describe the solution you'd like

We could use the minimumFractionDigits option of https://www.npmjs.com/package/pretty-bytes. Not sure whether to do that by default or to somehow make it configurable.

Can you submit a pull request?

Yes.

[eduardoboucas]

💭 We could determine the need to add fraction digits, and even how many to add, by looking at the variation. If there's no variation at all, there's no need to add more precision; if we see a 0.04% variation, we should be able to infer how many fraction digits are needed to capture it.