Adds pad for adding zero padding to a number.

[jfrux]

I've been using this a lot lately and figured I'd submit if you are interested in upstreaming.
I can make mods if something looks shady.

Basically it just does zero-padding of numbers.

README exerpt:

pad

adds zero-padding to a number and returns a string, allows composing

number1: 1,
size1: 3,
size2: '5',
example: pad('number1','size1'), // 001
example2: pad('number1','size1'), // 001
example3: pad(raw(8),'size2') // 00008

[mriska]

This should be //00008 right?

Same typo exists in the PR description.

[jfrux]

Yep, missed that. Sorry!

[mriska]

Questions:

• Should this be called pad or leftPad - If we want to have a rightPad later?
• Would/should it work with padding strings as well as numbers?
• Should it be possible to choose the padCharacter yourself? - I think this might be interesting if it is used for padding strings.

@kellyselden, your thoughts?

[jfrux]

@mriska Great points, I like those ideas.
I could work on that for sure.

[mriska]

example1 and example2 are now the same.

[jfrux]

Relevant to the discussion:

• https://www.geeksforgeeks.org/c-padleft-method/
• https://github.com/jonschlinkert/pad-left

[kellyselden]

Thanks for those links. I think it makes sense to match those apis. Lets call it padLeft, default to space char, and allow your own char.