Fixed width format

[gaborcsardi]

For progress bars, it would be nice to have an output format that is always the same width. E.g. a possible six character wide format:

            1 -> 0.0 kB
           10 -> 0.0 kB
          100 -> 0.1 kB
         1000 -> 1.0 kB
        10000 ->  10 kB
       100000 -> 100 kB
      1000000 -> 1.0 MB
     10000000 ->  10 MB
    100000000 -> 100 MB
   1000000000 -> 1.0 GB
  10000000000 ->  10 GB
 100000000000 -> 100 GB
1000000000000 -> 1.0 TB

[vladshcherbin]

@gaborcsardi maybe padStart can help you 🤔

[gaborcsardi]

Yeah, then I might just write another package, because it is not just a padStart() call, e.g. pretty-bytes returns 1 B for 1 byte, and ideally I would line up both the units and the numbers. This is why I was suggesting to avoid B in the example above.

[vladshcherbin]

@gaborcsardi oh, I see, this wasn't obvious from the example above :)

[vladshcherbin]

@gaborcsardi for your case, another option is to use filesize instead, you can set symbols there. A simple change of B to B and padStart should make your example possible.

I switched to it because I need precision #57 and it kinda works fine.

[Richienb]

@sindresorhus How do you want the fixed width to be achieved?

Spaces only make sense for terminals or when using fixed-width fonts since they would sometimes otherwise be too small.

[sindresorhus]

Maybe instead we could just make add a rightAlign option.